Wood replaced by Copper, Azurite/Malachite Tints, Nacimiento Mine, Cuba, NM
USD 49.00 USD
Wood replaced by Copper, Azurite/Malachite Tints, Nacimiento Mine, Cuba, NM. Triassic cycad replaced by chalcocite (Cu2S) which is 90% copper by weight. The chalcocite is encased in a backiing of sandstone matrix. A coating of azurite and malachite and some iron oxide on specimen. 3/5 of a pound. 5 inches at longest. wood8.23
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