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Eylettersite Mineral Data
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General Eylettersite Information
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 Chemical Formula: |
(Th,Pb)1-xAl3(PO4,SiO4)2(OH)6 (?) |
| Composition: |
Molecular Weight = 481.10 gm |
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Thorium 19.29 % Th 21.95 % ThO2 |
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Aluminum 20.19 % Al 38.15 % Al2O3 |
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Silicon 0.58 % Si 1.25 % SiO2 |
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Phosphorus 8.37 % P 19.18 % P2O5 |
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Hydrogen 1.70 % H 15.17 % H2O |
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Lead 4.31 % Pb 4.64 % PbO |
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Oxygen 45.56 % O |
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______ ______ |
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100.00 % 100.33 % = TOTAL OXIDE |
| Empirical Formula: |
Th0.4Pb0.1Al3.6(PO4)1.3(SiO4)0.10.5(H4)0.5(O4)(OH)6.1 |
| Environment: |
Alteration product of thorian crandallite in a phosphate-rich granite pegmatite. |
| IMA Status: |
Approved IMA 1972 |
| Locality: |
Kobokobo pegmatite, Lusungu River district, Kivu Province, Zaire. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Mme. Van Wambeke, wife of the discoverer. |
| Name Pronunciation: |
Eylettersite + Pronunciation  |
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