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Gehlenite |
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Louisnathan S J |
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The Canadian Mineralogist 10 (1971) 822-837 |
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Refinement of the crystal structure of a natural gehlenite, Ca2Al(Al,Si)2O7 |
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Locality: Crestmore, California, USA |
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7.716 7.716 5.089 90 90 90 P-42_1m |
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atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) |
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Ca .3375 .1625 .5110 .0057 .0057 .0243 .0015 -.0013 .0013 |
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AlT1 0 0 0 .93 .0028 .0028 .0168 0 0 0 |
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MgT1 0 0 0 .05 .0028 .0028 .0168 0 0 0 |
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FeT1 0 0 0 .02 .0028 .0028 .0168 0 0 0 |
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AlT .1431 .3569 .9528 .49 .0027 .0027 .0137 .0006 -.0008 .0008 |
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SiT .1431 .3569 .9528 .51 .0027 .0027 .0137 .0006 -.0008 .0008 |
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O1 .5 0 .1884 .0099 .0099 .0132 .0023 0 0 |
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O2 .1418 .3582 .2832 .0061 .0061 .0211 -.0009 -.0005 .0005 |
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O3 .0872 .1706 .8033 .0075 .0056 .0215 .0021 -.0007 -.0024 |
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| Download AMC data (View Text File)
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Gehlenite |
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Swainson I P, Dove M T, Schmahl W W, Putnis A |
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Physics and Chemistry of Minerals 19 (1992) 185-195 |
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Neutron powder diffraction study of the akermanite-gehlenite |
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solid solution series |
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Sample: O% Ak |
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7.6850 7.6850 5.0636 90 90 90 P-42_1m |
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atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) |
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Ca .3389 .1611 .5104 .0192 .0192 .0059 .0065 -.0013 -.0013 |
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AlT1 0 0 0 .0068 .0068 .0076 0 0 0 |
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AlT2 .1434 .3556 .9540 .265 .0050 .0050 .0020 -.0008 .0007 .0007 |
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SiT2 .1434 .3556 .9540 .2375 .0050 .0050 .0020 -.0008 .0007 .0007 |
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O1 .5 0 .1765 .0122 .0122 .0042 -.0032 0 0 |
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O2 .1427 .3573 .2835 .0136 .0136 .0067 .0000 .0026 .0026 |
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O3 .0876 .1678 .8078 .0156 .0087 .0077 -.0027 .0037 -.0002 |
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| Download AMC data (View Text File)
Download CIF data (View Text File)
Download diffraction data (View Text File)
View JMOL 3-D Structure
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Gehlenite |
|
Swainson I P, Dove M T, Schmahl W W, Putnis A |
| |
Physics and Chemistry of Minerals 19 (1992) 185-195 |
|
Neutron powder diffraction study of the akermanite-gehlenite |
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solid solution series |
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Sample: 25% Ak |
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7.7115 7.7115 5.0498 90 90 90 P-42_1m |
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atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) |
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Ca .3377 .1623 .5100 .0193 .0193 .0071 .0094 0 0 |
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MgT1 0 0 0 .21 .0086 .0086 .0064 0 0 0 |
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AlT1 0 0 0 .79 .0086 .0086 .0064 0 0 0 |
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AlT2 .1421 .3579 .9503 .375 .0037 .0037 .0033 -.0007 .0013 .0013 |
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SiT2 .1421 .3579 .9503 .62 .0037 .0037 .0033 -.0007 .0013 .0013 |
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O1 .5 0 .1793 .0138 .0134 .0049 -.0096 0 0 |
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O2 .1430 .357 .2756 .0136 .0079 .0036 .0036 |
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O3 .0861 .1717 .8030 .0170 .0086 .0094 -.0035 .0028 -.0024 |
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| Download AMC data (View Text File)
Download CIF data (View Text File)
Download diffraction data (View Text File)
View JMOL 3-D Structure
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