Chemistry:Pecoraite
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Short description: Nickel phyllosilicate mineral of the serpentine group
| Pecoraite | |
|---|---|
 Pecoraite from Eden, Vermont | |
| General | |
| Category | Silicate mineral |
| Formula (repeating unit) | Ni 3(Si 2O 5)(OH) 4 |
| Strunz classification | 9.ED.15 |
| Crystal system | Monoclinic Unknown space group |
| Identification | |
| Color | Green, blue-green yellow-green |
| Mohs scale hardness | 2.5–3 |
| |re|er}} | Waxy, earthy |
| Streak | Pale green |
| Specific gravity | 3.084 |
Pecoraite is a nickel silicate mineral and a member of the serpentine group. It was named after geologist William Thomas Pecora. It is monoclinic and has a chemical composition of Ni
3(Si
2O
5)(OH)
4. It is associated with the weathering-and-or oxidation of meteorites or nickel sulfide minerals such as millerite. It is also found in altered ultramafic rocks.[2] Pecoraite is typically a green, lime green, or bluegreen mineral with a waxy, or earthy luster and a mohs hardness of 2.5.[3] Common textural habits associated with pecoraite are curved plates, spirals and tubes. It can also be granular and massive.
See also
References
- ↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode: 2021MinM...85..291W.
- ↑ "Mineralogy Database". Mindat. http://www.mindat.org/min-3139.html. Retrieved 2013-03-21.
- ↑ "Webmineral". http://webmineral.com/data/Pecoraite.shtml. Retrieved 2013-03-21.
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