| 12hhjdi ((CHALCANTHITE)), $10 MINIMUM BID, Betha Mine, Tooele County, Utah, 2.2 x 1.5 x 1.5 cm, Thumbnail, | |
 | Blue crystals of Chalcanthite from the Bertha Mine. Chalcanthite is water soluble and excessive heat will cause the crystals to turn white by losing water. Other than that the crystal seem solid and are not overly delicate like smaller crystals. |
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