| 15dm957 ((COPPER pseudomorph after ARAGONITE)), $10 MINIMUM BID, Corocoro, Bolivia, .8 x .7 x .7 cm, Thumbnail, | |
 | Here is a thumbnail sized specimen of Copper after Aragonite. The shape is a hexagonal prism of the twinned Aragonite specimens. This specimen is actually two penetration twinned crystals of Copper with blue green Copper oxide coating on the surface. ex Dennis McMurdie collection. |
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