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Micheelsenite Mineral Data
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General Micheelsenite Information
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 Chemical Formula: |
(Ca,Y)3Al[PO3OH,CO3](CO3)(OH)6•12(H2O) |
| Composition: |
Molecular Weight = 667.02 gm |
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Calcium 12.02 % Ca 16.81 % CaO |
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Dysprosium 2.44 % Dy 2.80 % Dy2O3 |
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Yttrium 13.33 % Y 16.93 % Y2O3 |
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Aluminum 3.64 % Al 6.88 % Al2O3 |
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Phosphorus 3.25 % P 7.45 % P2O5 |
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Hydrogen 4.64 % H 41.46 % H2O |
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Carbon 2.16 % C 7.92 % CO2 |
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Oxygen 58.53 % O |
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______ ______ |
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100.00 % 100.24 % = TOTAL OXIDE |
| Empirical Formula: |
Ca2YDy0.1Al0.9(PO3OH)0.7(CO3)1.2(OH)6•12(H2O) |
| Environment: |
Late-stage hydrothermal product and in pegmatites, hornfels, marble zenoliths, and silicate cavities. Ettringite group, structure |
| IMA Status: |
Approved IMA 1999 (Dana # Added) |
| Locality: |
Mont Saint-Hilaire, Quebec Canada and the Nanna pegmatite, Narsaarsuup Qaava, South Greenland. Link to MinDat.org Location Data. |
| Name Origin: |
Named for H. I. Micheelsen (1931-), of the University of Copenhagen, Denmark. |
| Synonym: |
IMA1999-033 |
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