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Keystoneite Mineral Data
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General Keystoneite Information
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 Chemical Formula: |
Mg0.5[Ni++Fe++(TeO3)3]•4.5(H2O) |
| Composition: |
Molecular Weight = 734.55 gm |
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Magnesium 1.65 % Mg 2.74 % MgO |
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Iron 7.60 % Fe 9.78 % FeO |
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Nickel 7.99 % Ni 10.17 % NiO |
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Tellurium 52.11 % Te 65.18 % TeO2 |
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Hydrogen 1.23 % H 11.04 % H2O |
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Oxygen 29.40 % O |
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______ ______ |
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100.00 % 98.91 % = TOTAL OXIDE |
| Empirical Formula: |
Mg0.5NiFe2+(TeO3)3•4.5(H2O) |
| Environment: |
Secondary mineral in telluride-bearing ores. |
| IMA Status: |
Approved IMA 1988 |
| Locality: |
Keystone mine, Magnolia distict, Boulder County, Colorado, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality |
| Name Pronunciation: |
Keystoneite + Pronunciation  |
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