Seifertite
	Dera P, Prewitt C T, Boctor N Z, Hemley R J
	American Mineralogist 87 (2002) 1018-1023
	Characterization of a high-pressure phase of silica from the
	Martian meteorite Shergotty
	alpha-PbO2-like
	_database_code_amcsd 0002871
	4.097 5.0462 4.4946 90 90 90 Pbcn
	atom x y z Biso
	Si 0 .1522 .25 .8
	O .7336 .6245 .9186 .1
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Dickite
	Dera P, Prewitt C T, Japel S, Bish D L, Johnston C T
	American Mineralogist 88 (2003) 1428-1435
	Pressure-controlled polytypism in hydrous layered materials
	Sample: Low pressure dickite at P = 0.1 MPa
	_database_code_amcsd 0003170
	5.161 8.960 14.459 90 96.77 90 Cc
	atom x y z Uiso
	Si1 .0088 .4010 .0324 .012
	Si2 -.0035 .0722 .0315 .010
	Al1 .9126 .2523 .2233 .016
	Al2 .4184 .4176 .2226 .018
	O1 .9562 .2380 .9864 .017
	O2 .2548 .4714 .9856 .018
	O3 .7636 .5058 .9991 .017
	O4 .0789 .3908 .1428 .021
	O5 .0025 .0807 .1443 .012
	Oh1 .5850 .2747 .1488 .022
	Oh2 .2432 .2780 .2866 .018
	Oh3 .2525 .8932 .2888 .015
	Oh4 .3234 .5837 .2863 .021
	H1 .570 .173 .152 .026
	H2 .307 .260 .346 .022
	H3 .250 .990 .305 .018
	H4 .270 .588 .342 .026
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Dickite
	Dera P, Prewitt C T, Japel S, Bish D L, Johnston C T
	American Mineralogist 88 (2003) 1428-1435
	Pressure-controlled polytypism in hydrous layered materials
	Sample: High pressure dickite at P = 4.1 GPa
	_database_code_amcsd 0003171
	5.082 8.757 13.771 90 89.60 90 Cc
	atom x y z Uiso
	Si1 .0460 .4880 .0380 .005
	Si2 .0325 .1589 .0370 .005
	Al1 .8790 .3352 .2330 .005
	Al2 .3855 .5001 .2340 .005
	O1 .9870 .3240 .9860 .000
	O2 .3160 .5500 -.0090 .004
	O3 .8270 .6060 -.0040 .007
	O4 .0710 .4780 .1550 .008
	O5 .0020 .1700 .1550 .006
	Oh1 .5780 .3600 .1610 .003
	Oh2 .1970 .3530 .3040 .005
	Oh3 .1900 .9840 .3030 .010
	Oh4 .2620 .6660 .3010 .011
	H1 .4964 .2556 .1421
	H2 .2349 .2821 .3511
	H3 .2518 .0170 .3557
	H4 .2329 .6345 .3701
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 8.5 GPa using ruby-scale
	Note: P = 8.5 GPa using MgO-scale
	_database_code_amcsd 0004682
	4.144 4.144 4.144 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 12.2 GPa using ruby-scale
	Note: P = 12.4 GPa using MgO-scale
	_database_code_amcsd 0004683
	4.118 4.118 4.118 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 15.3 GPa using ruby-scale
	Note: P = 15.7 GPa using MgO-scale
	_database_code_amcsd 0004684
	4.097 4.097 4.097 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 18.2 GPa using ruby-scale
	Note: P = 18.5 GPa using MgO-scale
	_database_code_amcsd 0004685
	4.080 4.080 4.080 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 23.4 GPa using ruby-scale
	Note: P = 23.6 GPa using MgO-scale
	_database_code_amcsd 0004686
	4.051 4.051 4.051 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 28.1 GPa using ruby-scale
	Note: P = 28.3 GPa using MgO-scale
	_database_code_amcsd 0004687
	4.026 4.026 4.026 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 29.9 GPa using ruby-scale
	Note: P = 30.3 GPa using MgO-scale
	_database_code_amcsd 0004688
	4.017 4.017 4.017 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 34.5 GPa using ruby-scale
	Note: P = 35.5 GPa using MgO-scale
	_database_code_amcsd 0004689
	3.992 3.992 3.992 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 37.6 GPa using ruby-scale
	Note: P = 39.1 GPa using MgO-scale
	_database_code_amcsd 0004690
	3.977 3.977 3.977 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 40.4 GPa using ruby-scale
	Note: P = 42.0 GPa using MgO-scale
	_database_code_amcsd 0004691
	3.964 3.964 3.964 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 42.9 GPa using ruby-scale
	Note: P = 44.8 GPa using MgO-scale
	_database_code_amcsd 0004692
	3.952 3.952 3.952 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 46.9 GPa using ruby-scale
	Note: P = 48.7 GPa using MgO-scale
	_database_code_amcsd 0004693
	3.937 3.937 3.937 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 49.7 GPa using ruby-scale
	Note: P = 52.1 GPa using MgO-scale
	_database_code_amcsd 0004694
	3.924 3.924 3.924 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 53.0 GPa using ruby-scale
	Note: P = 55.1 GPa using MgO-scale
	_database_code_amcsd 0004695
	3.913 3.913 3.913 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 56.1 GPa using ruby-scale
	Note: P = 58.1 GPa using MgO-scale
	_database_code_amcsd 0004696
	3.902 3.902 3.902 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 59.5 GPa using ruby-scale
	Note: P = 61.7 GPa using MgO-scale
	_database_code_amcsd 0004697
	3.890 3.890 3.890 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 62.8 GPa using ruby-scale
	Note: P = 65.3 GPa using MgO-scale
	_database_code_amcsd 0004698
	3.878 3.878 3.878 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 65.6 GPa using ruby-scale
	Note: P = 68.2 GPa using MgO-scale
	_database_code_amcsd 0004699
	3.869 3.869 3.869 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 68.3 GPa using ruby-scale
	Note: P = 71.3 GPa using MgO-scale
	_database_code_amcsd 0004700
	3.859 3.859 3.859 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 6.5 GPa using ruby-scale
	Note: P = 6.6 GPa using MgO-scale
	_database_code_amcsd 0004701
	4.158 4.158 4.158 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 8.4 GPa using ruby-scale
	Note: P = 8.6 GPa using MgO-scale
	_database_code_amcsd 0004702
	4.144 4.144 4.144 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 11.5 GPa using ruby-scale
	Note: P = 11.7 GPa using MgO-scale
	_database_code_amcsd 0004703
	4.123 4.123 4.123 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 13.3 GPa using ruby-scale
	Note: P = 13.5 GPa using MgO-scale
	_database_code_amcsd 0004704
	4.111 4.111 4.111 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 18.6 GPa using ruby-scale
	Note: P = 18.9 GPa using MgO-scale
	_database_code_amcsd 0004705
	4.078 4.078 4.078 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 22.6 GPa using ruby-scale
	Note: P = 23.0 GPa using MgO-scale
	_database_code_amcsd 0004706
	4.055 4.055 4.055 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 27.4 GPa using ruby-scale
	Note: P = 27.8 GPa using MgO-scale
	_database_code_amcsd 0004707
	4.029 4.029 4.029 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 4.3 GPa using ruby-scale
	Note: P = 4.4 GPa using MgO-scale
	_database_code_amcsd 0004708
	4.175 4.175 4.175 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 7.9 GPa using ruby-scale
	Note: P = 8.4 GPa using MgO-scale
	_database_code_amcsd 0004709
	4.145 4.145 4.145 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 11.6 GPa using ruby-scale
	Note: P = 12.1 GPa using MgO-scale
	_database_code_amcsd 0004710
	4.119 4.119 4.119 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 17.8 GPa using ruby-scale
	Note: P = 18.3 GPa using MgO-scale
	_database_code_amcsd 0004711
	4.081 4.081 4.081 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 23.9 GPa using ruby-scale
	Note: P = 24.4 GPa using MgO-scale
	_database_code_amcsd 0004712
	4.047 4.047 4.047 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 30.6 GPa using ruby-scale
	Note: P = 31.5 GPa using MgO-scale
	_database_code_amcsd 0004713
	4.011 4.011 4.011 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 36.5 GPa using ruby-scale
	Note: P = 37.6 GPa using MgO-scale
	_database_code_amcsd 0004714
	3.983 3.983 3.983 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 40.1 GPa using ruby-scale
	Note: P = 41.4 GPa using MgO-scale
	_database_code_amcsd 0004715
	3.967 3.967 3.967 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 43.7 GPa using ruby-scale
	Note: P = 45.9 GPa using MgO-scale
	_database_code_amcsd 0004716
	3.948 3.948 3.948 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 46.8 GPa using ruby-scale
	Note: P = 48.7 GPa using MgO-scale
	_database_code_amcsd 0004717
	3.937 3.937 3.937 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 51.0 GPa using ruby-scale
	Note: P = 53.2 GPa using MgO-scale
	_database_code_amcsd 0004718
	3.920 3.920 3.920 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 55.3 GPa using ruby-scale
	Note: P = 57.1 GPa using MgO-scale
	_database_code_amcsd 0004719
	3.906 3.906 3.906 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 58.4 GPa using ruby-scale
	Note: P = 60.3 GPa using MgO-scale
	_database_code_amcsd 0004720
	3.895 3.895 3.895 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 62.9 GPa using ruby-scale
	Note: P = 65.3 GPa using MgO-scale
	_database_code_amcsd 0004721
	3.878 3.878 3.878 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 66.5 GPa using ruby-scale
	Note: P = 69.4 GPa using MgO-scale
	_database_code_amcsd 0004722
	3.865 3.865 3.865 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 69.6 GPa using ruby-scale
	Note: P = 72.8 GPa using MgO-scale
	_database_code_amcsd 0004723
	3.855 3.855 3.855 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 74.6 GPa using ruby-scale
	Note: P = 78.9 GPa using MgO-scale
	_database_code_amcsd 0004724
	3.837 3.837 3.837 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 80.0 GPa using ruby-scale
	Note: P = 84.0 GPa using MgO-scale
	_database_code_amcsd 0004725
	3.822 3.822 3.822 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 85.0 GPa using ruby-scale
	Note: P = 90.1 GPa using MgO-scale
	_database_code_amcsd 0004726
	3.805 3.805 3.805 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 89.0 GPa using ruby-scale
	Note: P = 94.4 GPa using MgO-scale
	_database_code_amcsd 0004727
	3.794 3.794 3.794 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 96.2 GPa using ruby-scale
	Note: P = 102.9 GPa using MgO-scale
	_database_code_amcsd 0004728
	3.773 3.773 3.773 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 99.6 GPa using ruby-scale
	Note: P = 106.4 GPa using MgO-scale
	_database_code_amcsd 0004729
	3.765 3.765 3.765 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 102.4 GPa using ruby-scale
	Note: P = 109.4 GPa using MgO-scale
	_database_code_amcsd 0004730
	3.758 3.758 3.758 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 106.3 GPa using ruby-scale
	Note: P = 113.8 GPa using MgO-scale
	_database_code_amcsd 0004731
	3.748 3.748 3.748 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 111.0 GPa using ruby-scale
	Note: P = 118.1 GPa using MgO-scale
	_database_code_amcsd 0004732
	3.738 3.738 3.738 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 3.6 GPa
	_database_code_amcsd 0004733
	4.181 4.181 4.181 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 7.4 GPa
	_database_code_amcsd 0004734
	4.156 4.156 4.156 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 10.6 GPa
	_database_code_amcsd 0004735
	4.133 4.133 4.133 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 13.5 GPa
	_database_code_amcsd 0004736
	4.114 4.114 4.114 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 16.2 GPa
	_database_code_amcsd 0004737
	4.096 4.096 4.096 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 18.9 GPa
	_database_code_amcsd 0004738
	4.079 4.079 4.079 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 22.8 GPa
	_database_code_amcsd 0004739
	4.058 4.058 4.058 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 26.9 GPa
	_database_code_amcsd 0004740
	4.037 4.037 4.037 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 31.1 GPa
	_database_code_amcsd 0004741
	4.015 4.015 4.015 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 36.6 GPa
	_database_code_amcsd 0004742
	3.991 3.991 3.991 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 41.4 GPa
	_database_code_amcsd 0004743
	3.970 3.970 3.970 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 49.1 GPa
	_database_code_amcsd 0004744
	3.942 3.942 3.942 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 52.2 GPa
	_database_code_amcsd 0004745
	3.930 3.930 3.930 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 53.5 GPa
	_database_code_amcsd 0004746
	3.926 3.926 3.926 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 55.9 GPa
	_database_code_amcsd 0004747
	3.916 3.916 3.916 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 58.1 GPa
	_database_code_amcsd 0004748
	3.907 3.907 3.907 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 61.1 GPa
	_database_code_amcsd 0004749
	3.899 3.899 3.899 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
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	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 63.5 GPa
	_database_code_amcsd 0004750
	3.889 3.889 3.889 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
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	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 65.9 GPa
	_database_code_amcsd 0004751
	3.882 3.882 3.882 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
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	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 68.7 GPa
	_database_code_amcsd 0004752
	3.876 3.876 3.876 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
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	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 71.2 GPa
	_database_code_amcsd 0004753
	3.865 3.865 3.865 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
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	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 73.9 GPa
	_database_code_amcsd 0004754
	3.856 3.856 3.856 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
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	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 76.2 GPa
	_database_code_amcsd 0004755
	3.851 3.851 3.851 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
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	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 80.1 GPa
	_database_code_amcsd 0004756
	3.840 3.840 3.840 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
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	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 83.5 GPa
	_database_code_amcsd 0004757
	3.828 3.828 3.828 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
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	Periclase
	Jacobsen S D, Holl C M, Adams K A, Fischer R A, Martin E S, Bina C R, Lin J F,
	Prakapenka V B, Kubo A, Dera P
	American Mineralogist 93 (2008) 1823-1828
	Compression of single-crystal magnesium oxide to 118 GPa and a ruby pressure
	gauge for helium pressure media
	Note: P = 86.6 GPa
	_database_code_amcsd 0004758
	3.821 3.821 3.821 90 90 90 Fm3m
	atom x y z
	Mg 0 0 0
	O .5 .5 .5
	Download AMC data (View Text File) Download CIF data (View Text File) Download diffraction data (View Text File) View JMOL 3-D Structure
	Hercynite
	Lavina B, Cesare B, Alvarez-Valero A M, Uchida H, Downs R T, Koneva A, Dera P
	American Mineralogist 94 (2009) 657-665
	Closure temperatures of intracrystalline ordering in anatectic and metamorphic
	hercynite, Fe2+Al2O4
	Note: Sample HO19
	Locality: El Hoyazo, lavas of the Neogene Volcanic Province of SE Spain
	_database_code_amcsd 0004917
	8.1584 8.1584 8.1584 90 90 90 *Fd3m
	.125 .125 .125
	atom x y z occ Uiso
	Fe2+T .125 .125 .125 .75 .00781
	Fe3+T .125 .125 .125 .01 .00781
	AlT .125 .125 .125 .17 .00781
	MgT .125 .125 .125 .05 .00781
	AlM .5 .5 .5 .897 .00627
	Fe2+M .5 .5 .5 .046 .00627
	MgM .5 .5 .5 .044 .00627
	Fe3+M .5 .5 .5 .013 .00627
	O .26371 .26371 .26371 .0119
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	Hercynite
	Lavina B, Cesare B, Alvarez-Valero A M, Uchida H, Downs R T, Koneva A, Dera P
	American Mineralogist 94 (2009) 657-665
	Closure temperatures of intracrystalline ordering in anatectic and metamorphic
	hercynite, Fe2+Al2O4
	Note: Sample AVMa8.9
	Locality: El Hoyazo, lavas of the Neogene Volcanic Province of SE Spain
	_database_code_amcsd 0004918
	8.1511 8.1511 8.1511 90 90 90 *Fd3m
	.125 .125 .125
	atom x y z occ Uiso
	Fe2+T .125 .125 .125 .77 .00734
	Fe3+T .125 .125 .125 .01 .00734
	AlT .125 .125 .125 .16 .00734
	MgT .125 .125 .125 .04 .00734
	AlM .5 .5 .5 .894 .00549
	Fe2+M .5 .5 .5 .051 .00549
	MgM .5 .5 .5 .038 .00549
	Fe3+M .5 .5 .5 .021 .00549
	O .26393 .26393 .26393 .01082
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	Hercynite
	Lavina B, Cesare B, Alvarez-Valero A M, Uchida H, Downs R T, Koneva A, Dera P
	American Mineralogist 94 (2009) 657-665
	Closure temperatures of intracrystalline ordering in anatectic and metamorphic
	hercynite, Fe2+Al2O4
	Note: Sample AVHz20
	Locality: El Hoyazo, lavas of the Neogene Volcanic Province of SE Spain
	_database_code_amcsd 0004919
	8.1517 8.1517 8.1517 90 90 90 *Fd3m
	.125 .125 .125
	atom x y z occ Uiso
	Fe2+T .125 .125 .125 .77 .00732
	Fe3+T .125 .125 .125 .02 .00732
	AlT .125 .125 .125 .14 .00732
	MgT .125 .125 .125 .06 .00732
	AlM .5 .5 .5 .883 .00506
	Fe2+M .5 .5 .5 .044 .00506
	MgM .5 .5 .5 .043 .00506
	Fe3+M .5 .5 .5 .028 .00506
	TiM .5 .5 .5 .002 .00506
	O .26405 .26405 .26405 .0105
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	Hercynite
	Lavina B, Cesare B, Alvarez-Valero A M, Uchida H, Downs R T, Koneva A, Dera P
	American Mineralogist 94 (2009) 657-665
	Closure temperatures of intracrystalline ordering in anatectic and metamorphic
	hercynite, Fe2+Al2O4
	Note: Sample HO15
	Locality: El Hoyazo, lavas of the Neogene Volcanic Province of SE Spain
	_database_code_amcsd 0004920
	8.1504 8.1504 8.1504 90 90 90 *Fd3m
	.125 .125 .125
	atom x y z occ Uiso
	Fe2+T .125 .125 .125 .73 .00771
	Fe3+T .125 .125 .125 .02 .00771
	AlT .125 .125 .125 .18 .00771
	MgT .125 .125 .125 .06 .00771
	AlM .5 .5 .5 .875 .00584
	Fe2+M .5 .5 .5 .059 .00584
	MgM .5 .5 .5 .045 .00584
	Fe3+M .5 .5 .5 .015 .00584
	TiM .5 .5 .5 .003 .00584
	MnM .5 .5 .5 .003 .00584
	O .26352 .26352 .26352 .0123
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	Hercynite
	Lavina B, Cesare B, Alvarez-Valero A M, Uchida H, Downs R T, Koneva A, Dera P
	American Mineralogist 94 (2009) 657-665
	Closure temperatures of intracrystalline ordering in anatectic and metamorphic
	hercynite, Fe2+Al2O4
	Note: Sample HO27BC
	Locality: El Hoyazo, lavas of the Neogene Volcanic Province of SE Spain
	_database_code_amcsd 0004921
	8.1474 8.1474 8.1474 90 90 90 *Fd3m
	.125 .125 .125
	atom x y z occ Uiso
	Fe2+T .125 .125 .125 .74 .00723
	Fe3+T .125 .125 .125 .02 .00723
	AlT .125 .125 .125 .16 .00723
	MgT .125 .125 .125 .07 .00723
	AlM .5 .5 .5 .881 .00504
	Fe2+M .5 .5 .5 .046 .00504
	MgM .5 .5 .5 .047 .00504
	Fe3+M .5 .5 .5 .020 .00504
	TiM .5 .5 .5 .002 .00504
	MnM .5 .5 .5 .003 .00504
	ZnM .5 .5 .5 .001 .00504
	O .26385 .26385 .26385 .0106
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	Hercynite
	Lavina B, Cesare B, Alvarez-Valero A M, Uchida H, Downs R T, Koneva A, Dera P
	American Mineralogist 94 (2009) 657-665
	Closure temperatures of intracrystalline ordering in anatectic and metamorphic
	hercynite, Fe2+Al2O4
	Note: Sample 441A
	Locality: the Anga metamorphic complex, Lake Baikal, Russia
	_database_code_amcsd 0004922
	8.1460 8.1460 8.1460 90 90 90 *Fd3m
	.125 .125 .125
	atom x y z occ Uiso
	Fe2+T .125 .125 .125 .77 .00633
	Fe3+T .125 .125 .125 .01 .00633
	AlT .125 .125 .125 .11 .00633
	MgT .125 .125 .125 .10 .00633
	AlM .5 .5 .5 .928 .0044
	Fe2+M .5 .5 .5 .019 .0044
	MgM .5 .5 .5 .045 .0044
	Fe3+M .5 .5 .5 .011 .0044
	O .26471 .26471 .26471 .0071
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	Hercynite
	Lavina B, Cesare B, Alvarez-Valero A M, Uchida H, Downs R T, Koneva A, Dera P
	American Mineralogist 94 (2009) 657-665
	Closure temperatures of intracrystalline ordering in anatectic and metamorphic
	hercynite, Fe2+Al2O4
	Note: Sample 441B
	Locality: the Anga metamorphic complex, Lake Baikal, Russia
	_database_code_amcsd 0004923
	8.1451 8.1451 8.1451 90 90 90 *Fd3m
	.125 .125 .125
	atom x y z occ Uiso
	Fe2+T .125 .125 .125 .76 .00582
	Fe3+T .125 .125 .125 .02 .00582
	AlT .125 .125 .125 .11 .00582
	MgT .125 .125 .125 .11 .00582
	AlM .5 .5 .5 .917 .00411
	Fe2+M .5 .5 .5 .013 .00411
	MgM .5 .5 .5 .048 .00411
	Fe3+M .5 .5 .5 .016 .00411
	TiM .5 .5 .5 .004 .00411
	VM .5 .5 .5 .002 .00411
	O .26464 .26464 .26464 .00724
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	Superhydrous Phase B
	Koch-Muller M, Dera P, Fei Y, Hellwig H, Liu Z, Van Orman J, Wirth R
	Physics and Chemistry of Minerals 32 (2005) 349-361
	Polymorphic phase transition in Superhydrous Phase B
	Sample: MKM0105
	Note: z(O6) corrected by authors
	_database_code_amcsd 0008972
	14.024 5.109 8.733 90 90 90 Pnn2
	atom x y z
	Mg1 .1731 .3279 .0053
	Mg2A .1775 .8358 .1752
	Mg2B .3240 .3461 .3242
	Mg3A 0 .5000 .8286
	Mg3B 0 .5000 .1870
	Mg4A 0 0 .6625
	Mg4B 0 0 .3455
	Si1 0 0 .0077
	Si2 .3766 .0141 .0051
	O1 .4153 .7088 .9936
	O2 .0783 .6931 .0050
	O3A .2495 .0220 .3451
	O3B .2552 .5120 .1620
	O4A .0760 .1440 .1531
	O4B .4298 .6470 .3619
	O5A .4145 .1530 .1599
	O5B .0889 .6850 .3479
	O6 .2598 .0048 .0070
	H1 .3 .6 .1
	H2 .27 .18 .45
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	Superhydrous Phase B
	Koch-Muller M, Dera P, Fei Y, Hellwig H, Liu Z, Van Orman J, Wirth R
	Physics and Chemistry of Minerals 32 (2005) 349-361
	Polymorphic phase transition in Superhydrous Phase B
	Sample: JIM252
	_database_code_amcsd 0008973
	13.991 5.097 8.715 90 90 90 Pnnm
	atom x y z occ
	Mg1 .1729 .3301 0 .82
	Ni1 .1729 .3301 0 .18
	Mg2 .1758 .8410 .1756 .82
	Ni2 .1758 .8410 .1756 .18
	Mg3 0 0 .3413 .82
	Ni3 0 0 .3413 .18
	Mg4 0 .5000 .1776 .82
	Ni4 0 .5000 .1776 .18
	Si1 0 0 0
	Si2 .3765 .0144 0
	O1 .2519 .5149 .1579
	O2 .4152 .7103 0
	O3 .0787 .6993 0
	O4 .0731 .1428 .1452
	O5 .4134 .1672 .1555
	O6 .2577 .0051 0
	D1 .3 .6 .1 .8
	H1 .3 .6 .1 .2
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	Cristobalite
	Dera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T
	Physics and Chemistry of Minerals 38 (2011) Online-first
	New insights into the high-pressure polymorphism of SiO2 cristobalite
	Note: P = 0.2 GPa
	Locality: Ellora Caves, India
	_database_code_amcsd 0018342
	4.9501 4.9501 6.9259 90 90 90 P4_12_12
	atom x y z Uiso
	Si .3027 .3027 0 .0101
	O .2388 .1086 .1817 .015
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	Cristobalite
	Dera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T
	Physics and Chemistry of Minerals 38 (2011) Online-first
	New insights into the high-pressure polymorphism of SiO2 cristobalite
	Note: P = 0.6 GPa
	Locality: Ellora Caves, India
	_database_code_amcsd 0018343
	4.908 4.908 6.784 90 90 90 P4_12_12
	atom x y z Uiso
	Si .3083 .3083 0 .018
	O .2387 .1161 .1865 .011
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	Cristobalite
	Dera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T
	Physics and Chemistry of Minerals 38 (2011) Online-first
	New insights into the high-pressure polymorphism of SiO2 cristobalite
	Note: P = 3.6 GPa
	Locality: Ellora Caves, India
	_database_code_amcsd 0018344
	4.746 4.746 6.445 90 90 90 P4_12_12
	atom x y z Uiso
	Si .3237 .3237 0 .012
	O .2338 .1546 .1992 .010
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	Cristobalite
	Dera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T
	Physics and Chemistry of Minerals 38 (2011) Online-first
	New insights into the high-pressure polymorphism of SiO2 cristobalite
	Note: P = 5.4 GPa
	Locality: Ellora Caves, India
	_database_code_amcsd 0018345
	4.682 4.682 6.311 90 90 90 P4_12_12
	atom x y z Uiso
	Si .3316 .3316 0 .009
	O .2297 .1648 .2119 .005
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	Cristobalite
	Dera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T
	Physics and Chemistry of Minerals 38 (2011) Online-first
	New insights into the high-pressure polymorphism of SiO2 cristobalite
	Note: P = 7.3 GPa
	Locality: Ellora Caves, India
	_database_code_amcsd 0018346
	4.632 4.632 6.209 90 90 90 P4_12_12
	atom x y z Uiso
	Si .3353 .3353 0 .007
	O .2276 .1768 .2228 .008
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	Cristobalite
	Dera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T
	Physics and Chemistry of Minerals 38 (2011) Online-first
	New insights into the high-pressure polymorphism of SiO2 cristobalite
	Note: P = 9.1 GPa
	Locality: Ellora Caves, India
	_database_code_amcsd 0018347
	4.599 4.599 6.130 90 90 90 P4_12_12
	atom x y z Uiso
	Si .3396 .3396 0 .014
	O .2238 .1800 .2164 .011
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	Cristobalite II
	Dera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T
	Physics and Chemistry of Minerals 38 (2011) Online-first
	New insights into the high-pressure polymorphism of SiO2 cristobalite
	Note: P = 3.5 GPa, data transformed from Dove et al (2000)
	_database_code_amcsd 0018348
	8.011 4.544 8.890 90 121.0 90 P2_1/c
	atom x y z Uiso
	Si1 .6274 .2661 .8461 .018
	Si2 .8660 .0221 .7189 .018
	O1 .8152 .1255 .8517 .028
	O2 .6944 .4046 .0275 .028
	O3 .4637 .0262 .7952 .028
	O4 .0696 .1948 .7604 .028
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	Cristobalite II
	Dera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T
	Physics and Chemistry of Minerals 38 (2011) Online-first
	New insights into the high-pressure polymorphism of SiO2 cristobalite
	Note: P = 4.9 GPa
	Locality: Ellora Caves, India
	_database_code_amcsd 0018349
	8.011 4.544 8.890 90 121.0 90 P2_1/c
	atom x y z Uiso
	Si1 .6265 .2742 .8472 .011
	Si2 .8757 .0079 .7218 .014
	O1 .8110 .1122 .8606 .015
	O2 .6980 .4261 .0033 .019
	O3 .4636 .0326 .8042 .011
	O4 .0665 .1704 .7533 .016
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	Cristobalite II
	Dera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T
	Physics and Chemistry of Minerals 38 (2011) Online-first
	New insights into the high-pressure polymorphism of SiO2 cristobalite
	Note: P = 7.4 GPa
	Locality: Ellora Caves, India
	_database_code_amcsd 0018350
	7.894 4.456 8.582 90 119.7 90 P2_1/c
	atom x y z Uiso
	Si1 .6274 .2767 .8492 .008
	Si2 .8757 .9875 .7260 .011
	O1 .8107 .1082 .8680 .008
	O2 .6889 .4490 .0333 .017
	O3 .4534 .0338 .8043 .016
	O4 .0689 .1382 .7504 .014
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	Cristobalite II
	Dera P, Lazarz J D, Prakapenka V B, Barkley M, Downs R T
	Physics and Chemistry of Minerals 38 (2011) Online-first
	New insights into the high-pressure polymorphism of SiO2 cristobalite
	Note: P = 10.1 GPa
	Locality: Ellora Caves, India
	_database_code_amcsd 0018351
	7.803 4.382 8.366 90 118.7 90 P2_1/c
	atom x y z Uiso
	Si1 .6258 .2822 .8522 .010
	Si2 .8769 .9612 .7287 .008
	O1 .8230 .1155 .8780 .020
	O2 .6839 .4673 .0384 .010
	O3 .4551 .0478 .8067 .018
	O4 .0670 .1033 .7402 .027
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	NiP
	Dera P, Lazarz J D, Lavina B
	Journal of Solid State Chemistry 184 (2011) 1997-2003
	Pressure-induced development of bonding in NiAs type compounds and
	polymorphism of NiP
	Locality: Synthetic
	Note: P = 1.29 GPa
	_database_code_amcsd 0018497
	6.0360 4.8684 6.8788 90 90 90 Pbca
	atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
	Ni .1945 .0117 .3968 .008 .008 .007 .009 .000 -.001 .001
	P .0589 .1744 .1127 .010 .007 .009 .014 .000 .001 .003
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