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Rhomboclase Mineral Data
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General Rhomboclase Information
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 Chemical Formula: |
(H5O2)+Fe+++(SO4)2•2(H2O) |
| Composition: |
Molecular Weight = 321.04 gm |
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Iron 17.40 % Fe 24.87 % Fe2O3 |
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Hydrogen 2.83 % H 25.25 % H2O |
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Sulfur 19.98 % S 49.88 % SO3 |
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Oxygen 59.80 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
HFe3+(SO4)2•4(H2O) |
| Environment: |
Secondary mineral formed by alteration of pyrite, especially in an arid climate; typically of post-mining origin. |
| IMA Status: |
Valid Species (Pre-IMA) 1891 |
| Locality: |
Smolnik (Szomolnok), 16 km northeast of Roznava, Slovakia. Link to MinDat.org Location Data. |
| Name Origin: |
Named from the Greek for rhomb, for the typical rhombic crystal outline, and for to break, for its perfect cleavage. |
| Name Pronunciation: |
Rhomboclase + Pronunciation  |
| Synonym: |
ICSD 4302 |
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PDF 27-245 |
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