- New Idria District, Diablo Range, San Benito Co., California, USA
- Cabinet, 9.9 x 6.9 x 6.4 cm
A rich and very fine specimen of California artinite. It is a rather rare carbonate mineral (Hydrated Magnesium Carbonate Hydroxide). It forms as a crust of fibrous crystal aggregates sometimes collected into tight balls. It is always associated with ultra-basic igneous and metamorphic rocks such as serpentinite. Ex. Richard Hauck Collection.