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Derbylite Mineral Data
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General Derbylite Information
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Chemical Formula: |
(Fe+++,Fe++,Ti)7Sb+++O13(OH) |
Composition: |
Molecular Weight = 721.74 gm |
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Titanium 13.27 % Ti 22.13 % TiO2 |
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Iron 38.69 % Fe 19.91 % FeO / 33.19 % Fe2O3 |
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Antimony 16.87 % Sb 20.19 % Sb2O3 |
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Hydrogen 0.14 % H 1.25 % H2O |
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Oxygen 31.03 % O |
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______ ______ |
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100.00 % 96.67 % = TOTAL OXIDE |
Empirical Formula: |
Fe3+3Fe2+2Ti2SbO13(OH) |
Environment: |
In cinnaber-bearing placer gravels. |
IMA Status: |
Valid Species (Pre-IMA) 1897 |
Locality: |
Tripuhy, Ouro Preto, Minas Gerais, Brazil. Link to MinDat.org Location Data. |
Name Origin: |
Named after the American Geologist Orville A. Derby 1851 - 1915 founder of the Brazilian Geological Survey. |
Name Pronunciation: |
Derbylite + Pronunciation |
Synonym: |
ICSD 9825 |
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PDF 35-599 |
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