Large, translucent SCHEELITE crystal with a contact twin. The largest face is 1.4 inches long. Brilliant golden-yellow color. It fluoresces blue under short wave UV light. The matrix is silvery MUSCOVITE. The specimen is from the famous Pingwu mine in China. Scheelite is a major ore for Tungsten. This specimen is from the collection of Roger Maynard. Roger is a friend and was a long-time geologist with the US Geological Survey.
SCHEELITE is a calcium tungstate mineral. Crystal system is Tetragonal, class Dipyramidal. Crystals are commonly pseudo-octahedral. Hardness is 4.5 – 5 on the Mohs scale. Scheelite is quite dense (6.1). Thus, the specimen is heavy relative to its size.
Location: Pingwu mine, Huya township, Mt Xuebaoding, Pingwu County, Mianyang, Sichuan Province, China. Pingwu is a tungsten-tin-beryllium mine with 35 valid minerals. The quartz veins also are rich in rare elements.
Specimen size: 2.1 x 1.9 x 1.6 inches
Specimen weight: 5.8 ounces
Brought to you by SIDEWINDER MINERALS
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