American Mineralogist Crystal Structure Database

9 matching records for this search.

Ahrensite
 
Yagi T, Marumo F, Akimoto S I
Download am/vol59/AM59_486.pdf
American Mineralogist 59 (1974) 486-490
Crystal structures of spinel polymorphs of Fe2SiO4 and Ni2SiO4
Locality: synthetic
_database_code_amcsd 0000404
8.234 8.234 8.234 90 90 90 Fd3m
atom     x     y     z  occ B(1,1) B(2,2) B(3,3) B(1,2)  B(1,3)  B(2,3)
Fe    .625  .625  .625 .989  .0015  .0015  .0015 -.0001  -.0001  -.0001
Si    .625  .625  .625 .011  .0015  .0015  .0015 -.0001  -.0001  -.0001
Fe       0     0     0 .023  .0010  .0010  .0010      0       0       0
Si       0     0     0 .977  .0010  .0010  .0010      0       0       0
O    .3658 .3658 .3658       .0015  .0015  .0015 -.0001  -.0001  -.0001
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Ahrensite
 
Finger L W, Hazen R M, Yagi T
Download am/vol64/AM64_1002.pdf
American Mineralogist 64 (1979) 1002-1009
Crystal structures and electron densities of nickel and iron silicate spinels at
elevated temperature or pressure
Locality: synthetic
_database_code_amcsd 0000748
8.236 8.236 8.236 90 90 90 *Fd3m
.125 .125 .125
atom     x     y     z Biso
Fe      .5    .5    .5 0.40
Si    .125  .125  .125 0.27
O    .2409 .2409 .2409 0.41
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Ahrensite
 
Yamanaka T
 
Physics and Chemistry of Minerals 13 (1986) 227-232
Crystal structures of Ni2SiO4 and Fe2SiO4 as a function of
temperature and heating duration
Sample: T = 20 C
Locality: synthetic
_database_code_amcsd 0007404
8.2374 8.2374 8.2374 90 90 90 Fd3m
atom     x     y     z B(1,1) B(2,2) B(3,3)  B(1,2)  B(1,3)  B(2,3)
Fe    .625  .625  .625 .00121 .00121 .00121 -.00005 -.00005 -.00005
Si       0     0     0 .00118 .00118 .00118       0       0       0
O    .3658 .3658 .3658 .00137 .00137 .00137 -.00005 -.00005 -.00005
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Ahrensite
 
Yamanaka T
 
Physics and Chemistry of Minerals 13 (1986) 227-232
Crystal structures of Ni2SiO4 and Fe2SiO4 as a function of
temperature and heating duration
Sample: T = 200 C
Locality: synthetic
_database_code_amcsd 0007405
8.2513 8.2513 8.2513 90 90 90 Fd3m
atom     x     y     z B(1,1) B(2,2) B(3,3)  B(1,2)  B(1,3)  B(2,3)
Fe    .625  .625  .625 .00402 .00402 .00402 -.00013 -.00013 -.00013
Si       0     0     0 .00354 .00354 .00354       0       0       0
O    .3658 .3658 .3658 .00472 .00472 .00472 -.00010 -.00010 -.00010
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Ahrensite
 
Yamanaka T
 
Physics and Chemistry of Minerals 13 (1986) 227-232
Crystal structures of Ni2SiO4 and Fe2SiO4 as a function of
temperature and heating duration
Sample: T = 400 C
Locality: synthetic
_database_code_amcsd 0007406
8.2644 8.2644 8.2644 90 90 90 Fd3m
atom     x     y     z B(1,1) B(2,2) B(3,3)  B(1,2)  B(1,3)  B(2,3)
Fe    .625  .625  .625 .00529 .00529 .00529 -.00006 -.00006 -.00006
Si       0     0     0 .00476 .00476 .00476       0       0       0
O    .3658 .3658 .3658 .00558 .00558 .00558 -.00011 -.00011 -.00011
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Download diffraction data (View Text File)
View JMOL 3-D Structure (permalink)
 
Ahrensite
 
Yamanaka T
 
Physics and Chemistry of Minerals 13 (1986) 227-232
Crystal structures of Ni2SiO4 and Fe2SiO4 as a function of
temperature and heating duration
Sample: T = 600 C
Locality: synthetic
_database_code_amcsd 0007407
8.3114 8.3114 8.3114 90 90 90 Fd3m
atom     x     y     z B(1,1) B(2,2) B(3,3)  B(1,2)  B(1,3)  B(2,3)
Fe    .625  .625  .625 .00687 .00687 .00687 -.00019 -.00019 -.00019
Si       0     0     0 .00654 .00654 .00654       0       0       0
O    .3657 .3657 .3657 .00763 .00763 .00763 -.00087 -.00087 -.00087
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Ahrensite
 
Yamanaka T
 
Physics and Chemistry of Minerals 13 (1986) 227-232
Crystal structures of Ni2SiO4 and Fe2SiO4 as a function of
temperature and heating duration
Sample: T = 700 C
Locality: synthetic
_database_code_amcsd 0007408
8.3398 8.3398 8.3398 90 90 90 Fd3m
atom     x     y     z B(1,1) B(2,2) B(3,3)  B(1,2)  B(1,3)  B(2,3)
Fe    .625  .625  .625 .00712 .00712 .00712 -.00068 -.00068 -.00068
Si       0     0     0 .00760 .00760 .00760       0       0       0
O    .3654 .3654 .3654 .00854 .00854 .00854 -.00102 -.00102 -.00102
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Ahrensite
 
Yamanaka T, Shimazu H, Ota K
 
Physics and Chemistry of Minerals 28 (2001) 110-118
Electric conductivity of Fe2SiO4-Fe3O4 spinel solid solutions
Sample: Fe(3-x)SixO4, x = 1.000, synthesized at 1200 C, 10 GPa
Locality: synthetic
_database_code_amcsd 0008507
8.2374 8.2374 8.2374 90 90 90 Fd3m
atom     x     y     z  occ
FeO   .625  .625  .625 .987
SiO   .625  .625  .625 .013
FeT      0     0     0 .026
SiT      0     0     0 .974
O    .3656 .3656 .3656
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Ahrensite
 
Ma C, Tschauner O, Beckett J R, Liu Y, Rossman G R, Sinogeikin S V, Smith J S, Taylor L A
 
Geochimica et Cosmochimica Acta 184 (2016) 240-256
Ahrensite, gamma-Fe2SiO4, a new shock-metamorphic mineral from the Tissint meteorite:
Implications for the Tissint shock event on Mars
Locality: Tissint meteorite
_database_code_amcsd 0021229
8.1629 8.1629 8.1629 90 90 90 *Fd3m
.125 .125 .125
atom    x    y    z occ Biso
Fe     .5   .5   .5 .56  .55
Mg     .5   .5   .5 .43  .55
Si     .5   .5   .5 .03  .55
Si   .125 .125 .125 .98  .23
Fe   .125 .125 .125 .03  .23
O    .748 .748 .748      .25
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View JMOL 3-D Structure (permalink)
 
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Total number of retrieved datasets: 9
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