1939 Orpiment | Twin Creeks Mine
Orpiment from Cut 62, Twin Creeks Mine, Humboldt County, Nevada, USA. FOV 40mm.
United States
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...