California

ncat JR3 Benitoite, Neptunite, California State Gem Mine, Santa Rita Peak, San Benito County, California, USA

Two joined benitoite crystals (I hesitate to say twinned as I don’t know what sorts of twins can occur), shown in normal, longwave ultraviolet (red), and shortwave ultraviolet (blue). It is really interesting how different the surface textures look under each light source. Width of view 14.5mm. Click on the...

2337 Desautelsite, Artinite pit, Picacho Peak, New Idria Mining District, San Benito Co., California, USA

Orange crystals. Width of view 11.5mm. Stack of 40 images. Desautelsite is named after Paul Desautels (1920-1991), well-known mineral micromounter and Curator of Gems and Minerals in the Department of Mineral Sciences of the U.S. National Museum of Natural History (Smithsonian Institution) in Washington, DC. Click on the image below...