| 11iddbgs ((Pseudo Octahedral TINCALCONITE)), $5 MINIMUM BID, Dissolving Tanks in Borate Refinery, Boron Open Pit Mine, , Kramer Borate Deposit, Boron, Kerns County, California, 5.5 x 5 x 2.5 cm, Miniature | |
 | Here is another rare and unusual specimen. It is a Tincalconite with pseudo Octahedral crystals. Usually Tincalconite is formed as a white mineral from Borax loosing water and pseudomorphing to Tincalconite. These formed inside the dissolving tanks and are only able to be collected when the tanks are cleaned out after years of being used. These were collected by Jim Minette. ex Jim and Dawn Minette collection. |
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