This chalcanthite is from the Planet Mine, 350 foot level, Planet, Santa Maria District, Buckskin Mountains, La Paz County, Arizona, USA. The Planet Mine produced ores of iron, copper, silver and gold from 1863 to 1937. Chalcanthite is a sulfate mineral that contains the elements Cu, S, O, and H. This specimen consists of a breccia altered clay matrix that hosts deposits of long fibrous crystals The display side is shown in photo 1. The crystals are translucent with a glass to silken luster. This piece measures 1 5/8 x 1 1/2 1 3/8 or 41 x 38 x 35 mm.
Note: There might be minor shedding of fibers or clay during shipping. It should not take away the characteristics of the piece.
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