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Ellestadite-(OH) Mineral Data
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General Ellestadite-(OH) Information
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 Chemical Formula: |
Ca5(SiO4,SO4)3(OH,Cl,F) |
| Composition: |
Molecular Weight = 505.35 gm |
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Calcium 39.65 % Ca 55.48 % CaO |
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Silicon 8.34 % Si 17.83 % SiO2 |
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Hydrogen 0.12 % H 1.07 % H2O |
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Sulfur 9.52 % S 23.76 % SO3 |
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Chlorine 2.10 % Cl 2.10 % Cl |
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- %
Cl -0.47 % -O=Cl2 |
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Oxygen 39.89 % O |
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Fluorine 0.38 % F 0.38 % F |
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- %
F -0.16 % -O=F2 |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca5(SiO4)1.5(SO4)1.5(OH)0.6Cl0.3F0.1 |
| Environment: |
In a skarn. |
| IMA Status: |
Approved IMA 1971 |
| Locality: |
Chichibu mine, Saitama Prefecture, Japan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the composition and Reuben B. Ellestad (1900-1993), American analytical chemist of Minneapolis, Minnesota, USA. |
| Synonym: |
Hydroxylellestadite - Renamed Ellestadite-(OH) by Mineralogical Record v39 (2008), 131 |
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