Category Phylloborates Strunz classification 6.FC.05 Space group P21/a | Formula
(repeating unit) CaB6O9(OH)2·3H2O Crystal system Monoclinic | |
 | ||
Crystal class Prismatic (2/m)
(same H-M symbol) | ||
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
Nobleite Wikipedia(Text) CC BY-SA