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Hillite Mineral Data
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General Hillite Information
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 Chemical Formula: |
Ca2(Zn, Mg)[PO4]2•2(H2O) |
| Composition: |
Molecular Weight = 356.69 gm |
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Sodium 0.06 % Na 0.09 % Na2O |
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Calcium 21.46 % Ca 30.03 % CaO |
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Magnesium 2.59 % Mg 4.29 % MgO |
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Zinc 11.73 % Zn 14.60 % ZnO |
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Phosphorus 17.63 % P 40.39 % P2O5 |
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Hydrogen 1.13 % H 10.10 % H2O |
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Oxygen 45.39 % O |
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______ ______ |
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100.00 % 99.51 % = TOTAL OXIDE |
| Empirical Formula: |
Ca1.91Na0.01Zn0.64Mg0.38(PO4)2.03•2(H2O) |
| Environment: |
Secondary mineral in a gossan on poorly-sorted argillacous siltstones. Zn-dominant analogue of collinsite |
| IMA Status: |
Approved IMA 2003 (Dana # Added) |
| Locality: |
Lower Cambrian Parachlna Formation, Reaphook Hill, South Australia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Roderik Hill (1949-), Chief of Mineral Research Division, CSIRO, Melbourne, Autralia. |
| Synonym: |
Collinsite-Zn |
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IMA2003-005 |
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