Cluster of bipyramidal CALCITE crystals with a maroon color, most likely from inclusions of iron. The largest crystal is 1.5 inches in length. The specimen is museum size, 6.1 inches in length. This specimen is from the collection of Roger Maynard. Roger is a friend and was a long-time geologist with the US Geological Survey.
CALCITE is a calcium carbonate mineral. It can be found in as many as 300 different forms. It belongs to the Trigonal crystal system. Hardness is 3 on the Mohs Scale.
Location: Santa Eulalia District, Aquiles Serdan Municipality, Chihuahua, Mexico
Size: 6.1 x 4.3 x 3.0 inches
Weight: 1 lb 14.5 oz
Brought to you by SIDEWINDER MINERALS
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