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Jahnsite-(MnMnMn) Mineral Data
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General Jahnsite-(MnMnMn) Information
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 Chemical Formula: |
MnMnMn2Fe+++2(PO4)4(OH)2•8(H2O) |
| Composition: |
Molecular Weight = 889.47 gm |
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Manganese 24.71 % Mn 31.90 % MnO |
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Iron 12.56 % Fe 17.95 % Fe2O3 |
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Phosphorus 13.93 % P 31.92 % P2O5 |
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Hydrogen 2.04 % H 18.23 % H2O |
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Oxygen 46.77 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Mn2+Mn2+Mn2+2Fe3+2(PO4)4(OH)2•8(H2O) |
| IMA Status: |
Not Approved IMA 1990 |
| Locality: |
Stewart mine, Pala, San Diego County, California, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Richard H. Jahns (1915-1983), mineralogist and pegmatite expert, Stanford University, Palo Alto, California, USA. |
| Name Pronunciation: |
Jahnsite-(MnMnMn)  |
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