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Deerite Mineral Data
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General Deerite Information
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 Chemical Formula: |
(Fe++,Mn)6(Fe+++,Al)3Si6O20(OH)5 |
| Composition: |
Molecular Weight = 1,052.69 gm |
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Manganese 10.44 % Mn 13.48 % MnO |
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Aluminum 1.92 % Al 3.63 % Al2O3 |
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Iron 33.16 % Fe 27.30 % FeO / 17.07 % Fe2O3 |
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Silicon 16.01 % Si 34.25 % SiO2 |
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Hydrogen 0.48 % H 4.28 % H2O |
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Oxygen 38.00 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Fe2+4Mn2+2Fe3+2.25Al0.75Si6O20(OH)5 |
| Environment: |
In meta-ironstones and Cu-Fe sulfide deposits, in blueschist facies metasediments formed at high pressure and low temperature. |
| IMA Status: |
Approved IMA 1964 |
| Locality: |
Laytonville quarry, 5 miles south of Laytonville, Mendocino Co. California. Link to MinDat.org Location Data. |
| Name Origin: |
Named for William Alexander Deer (1910- ), mineralogist-petrologist, Cambridge University, Cambridge, England. |
| Name Pronunciation: |
Deerite  |
| Synonym: |
ICSD 10421 |
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PDF 19-421 |
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