#black light rocks
Terlingua Calcite from the Little 38 Mine in Terlingua, Texas. All of the fluorescent minerals in this rock are calcite. Shown under long wave ultraviolet, mid-wave ultraviolet, short wave ultraviolet and white light. This one weighs over 8 pounds.
Fluorescent mineral display at the 64th Annual Dallas Gem & Mineral Society Show, November 20-21, 2021. The case is illuminated with long wave ultraviolet light on the left side, and short wave ultraviolet on the right. Note that many of the minerals in the center of the display exhibit different color responses under long wave vs. short wave.
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.
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Fluorite on hyalite reportedly from the La Lupita Mine in Durango, Chihuahua, Mexico. Pictured under short wave + long wave ultraviolet, white light, short wave only, and long wave only. The hyalite is best under short wave uv and the fluorite is best under long wave uv.
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End members of the scheelite-powellite series. Scheelite from Mt. Xuebaoding, China, and powellite with stilbite from Nasik, Maharashtra, India. Pictured under short wave ultraviolet and white light.
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The tag says “Botryoidal Seam Agate” with no location listed. If anyone recognizes it, please let me know! It measures 4″ x 2″ x 2″. Shown under white light and short wave ultraviolet.
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Terlingua Calcite from the Little 38 Mine, Terlingua, Texas. Pictured under long wave, mid-wave, and short wave ultraviolet and white light.
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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.
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Massive fluorite from near Rodeo, Durango, Mexico under white light and long wave ultraviolet (black light).
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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.
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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.
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Barite crystals from the Glow Stick Pocket of the Linwood Mine, Buffalo, Scott County, Iowa, under long wave ultraviolet and white light.
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Witherite, calcite and fluorite from Rosiclare, Illinois. Pictured under white light, long wave ultraviolet, short wave ultraviolet and mid-wave ultraviolet light.
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