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Ernstite Mineral Data
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General Ernstite Information
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 Chemical Formula: |
(Mn++1-xFe+++x)Al(PO4)(OH)2-xOx |
| Composition: |
Molecular Weight = 210.86 gm |
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Manganese 13.03 % Mn 16.82 % MnO |
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Aluminum 12.80 % Al 24.18 % Al2O3 |
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Iron 13.24 % Fe 18.93 % Fe2O3 |
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Phosphorus 14.69 % P 33.66 % P2O5 |
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Hydrogen 0.72 % H 6.41 % H2O |
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Oxygen 45.53 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Mn2+0.5Fe3+0.5Al(PO4)(OH)1.5O0.5 |
| Environment: |
Oxidation product of eosphoite in granitic pegmatite. |
| IMA Status: |
Approved IMA 1970 |
| Locality: |
Daib-East farm, Karibib, Namibia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Theodor K. A. Ernst (1904-), mineralogist, University of Erlangen, Germany. |
| Name Pronunciation: |
Ernstite  |
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