| d81 CALCITE with JAMESONITE???, Mexico, 7 x 6 x 2.5 cm | |
 | Very fine gemmy terminated Calcite crystals that could be mistakened for Quartz at first glance with no apparent damage. There are dark areas that I suspect may be Jamesonite or Jamesonite included Calcite. I am not much of a loop guy, so I can not find my loop. I use a 5 power opivisor and its not quite enough to see any Jamesonite needles on this specimen. |
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