Argentojarosite
Argentojarosite is an iron sulfate mineral with the chemical formula AgFe3+3(SO4)2(OH)6. It is one of few iron sulfate minerals containing silver in its chemical formula as a dominant element.[1] Its type locality is the East Tintic Mountains, Utah.[1][2]
| Argentojarosite | |
|---|---|
 | |
| General | |
| Category | Sulfate mineral |
| Formula (repeating unit) | AgFe3+3(SO4)2(OH)6 |
| Strunz classification | 7.BC.10 |
| Dana classification | 30.2.5.5 |
| Crystal system | Trigonal |
| Crystal class | Ditrigonal pyramidal (3m) |
| Space group | R3m |
| Identification | |
| Color | Yellow, yellow-brown, brown |
| Crystal habit | Coatings, fine-grained masses |
| Cleavage | {0001} distinct |
| Mohs scale hardness | 3.5-4.5 |
| Luster | Vitreous |
| Streak | Light yellow |
| Specific gravity | 3.66 |
| Density | 3.66 (measured), 3.81 (calculated) |
| Optical properties | Uniaxial (-) |
| Pleochroism | Dichroic, O: Yellow, E: Pale yellow |
| References | [1][2] |
References
- Argentojarosite Archived 2019-04-06 at the Wayback Machine on mindat.org
- Argentojarosite data sheet
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Wikimedia Commons has media related to Argentojarosite. |
External links
- Argentojarosite on the Handbook of Mineralogy
Bibliography
- Palache, P.; Berman H.; Frondel, C. (1960). "Dana's System of Mineralogy, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. (Seventh Edition)" John Wiley and Sons, Inc., New York, pp. 565.
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