| 13hbmdis ((9 GYPSUM variety SELENITE)), $10 MINIMUM BID, Pipestone District, Jefferson County, Montana, largest is 5.5 x 3 x 2 cm, 9 Miniatures to Thumbnails | |
 | After the Butte show I bought several flats of Montana minerals from a retired digger. These have not been cleaned. Here is are Gypsum crystals. the digger thought they were Calcite but they are Gypsum. They have a white coating that flakes off at least to some extent. |
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