| 14hhdm.o ((BUTTE SPECIMEN SAMPLE no. 13)), $10 MINIMUM BID, Steward Mine, Butte, Montana, 14 x 5.5 x 2.5 cm, Cabinet | |
 | Here is a specimen from Butte's Steward Mine. Blue iridescent area is probably Bornite. Shiny gold is Pyrite or Chalcopyrite. ex Dennis McMurdie collection. |
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