Minerals identify

Know how to recognize them

Nobleite

Phylloborates

Nobleite is a rare borate mineral with the chemical formula CaB6O9(OH)2·3H2O. It was discovered in 1961, in Death Valley , California , 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.

Identification

Crystal ( diaphaneity )

Monoclinic