#long wave uv

Calcite from the Buckwheat Dump at the Franklin Mineral Museum, Franklin, NJ.  Pictured under long wave, mid-wave, and short wave ultraviolet, and white light.

Fluorite from the Ojuela Mine, Mapimi, Durango, Mexico.  Pictured under Long wave ultraviolet and white light.  The widest face of the biggest crystal is 2.9 cm.

Massive fluorite from near Rodeo, Durango, Mexico under white light and long wave ultraviolet (black light).

Fluorite from the Ojuela Mine, Mapimi, Mexico shown under long wave ultraviolet (black light) and white light.  The main crystal is 2.2 cm along the long edge.

Mystery rock from a mystery location picked up at a garage sale.  Shown under long wave ultraviolet and white light.  Some little bruises on the golden cauliflower side, but with luck I think they might buff out.

Barite crystals from the Glow Stick Pocket of the Linwood Mine, Buffalo, Scott County, Iowa, under long wave ultraviolet and white light.

Asbestos from an unknown location under long wave ultraviolet and white light.

arockmaniac:

Benitoite from the Benitoite Gem Mine in San Benito County, California, the type locality.  Benitoite is a rare blue barium titanium silicate mineral and is considered to be one of the rarest minerals/gemstones in the world.  It was discovered in 1907 and is the State Gemstone of California.  According to www.minerals.net, “The crystal structure of Benitoite is unique, and is the only significant mineral in its crystal class. It crystallizes in a rare hexagonal sub-class called ditrigonal-dipyramidal.”  Pictured under short wave ultraviolet, white light, and long wave ultraviolet.