Chemistry:Nobleite
From HandWiki
| Nobleite | |
|---|---|
 Nobleite, Death Valley, California | |
| General | |
| Category | Phylloborates |
| Formula (repeating unit) | CaB6O9(OH)2·3H2O |
| Strunz classification | 6.FC.05 |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) (same H-M symbol) |
| Space group | P21/a |
| Identification | |
| |re|er}} | Vitreous[1] |
| Streak | White[1] |
| Specific gravity | 2.09[1] |
| Density | 2.09[1] |
| Ultraviolet fluorescence | Non-fluorescent[1] |
| Solubility | Slightly soluble in water[1] |
Nobleite is a rare borate mineral with the chemical formula CaB6O9(OH)2·3H2O. It was discovered in 1961, in Death Valley, California, and is named for Levi F. Noble, a USGS geologist, in honor of his contributions to the geology of the Death Valley region.
Nobleite has also been identified at two localities in Chile and Argentina.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "Nobleite". https://www.mindat.org/min-7197.html.
- ↑ 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.
External links
 |  |
