2207 Benitoite, California State Gem Mine, USA
Benitoite (blue) & Neptunite (black) with Natrolite (white) | California State Gem Mine, Santa Rita Peak, New Idria Mining District, California, San Benito Co., USA. [40x25x20mm]
Neptunite
1914 Neptunite, Joaquinite-(Ce) – California State Gem Mine
Na2KLiFe2+2Ti2Si8O24 Neptunite is a silicate mineral named for Neptune, the Roman god of the sea. It was first described in 1893 for an occurrence at the type locality for the species – Narssârssuk pegmatite, Narsaarsuk...