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Caysichite-(Y) Mineral Data
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General Caysichite-(Y) Information
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 Chemical Formula: |
Y2(Ca,Gd)2Si4O10(CO3)3(H2O,O,OH)•3H20 |
| Composition: |
Molecular Weight = 819.17 gm |
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Calcium 8.81 % Ca 12.32 % CaO |
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Gadolinium 3.84 % Gd 4.43 % Gd2O3 |
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Yttrium 21.71 % Y 27.57 % Y2O3 |
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Silicon 13.71 % Si 29.34 % SiO2 |
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Hydrogen 0.86 % H 7.69 % H2O |
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Carbon 4.88 % C 17.89 % CO2 |
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Oxygen 46.19 % O |
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______ ______ |
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100.00 % 99.23 % = TOTAL OXIDE |
| Empirical Formula: |
Y2Ca1.8Gd0.2Si4O10(CO3)3.33(OH)0.33•3.33(H2O) |
| Environment: |
Occurs in granite pegmatite lining cavities. |
| IMA Status: |
Approved IMA 1974 |
| Locality: |
Evans-Lou feldspar mine, Portland West Township, Quebec, Canada. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the composition (Ca, Y, Si, CO3). |
| Synonym: |
ICSD 200418 |
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IMA1973-044 |
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PDF 26-1394 |
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