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Copper Petrified Wood
An example of the element Copper

Sample Image
Copper Copper Petrified Wood
Copper Petrified Wood.
The tag that came with sample reads as follows:
Petrified wood from the Nacimiento Mine
Replacement minerals could include Malachite, Chalcocite, Azurite, Cuprite, Covellite, Digenite, Bornite, Plancheite, Iron Oxide, Pseudomalachite, Pyrite, Cubanite, Brochanite, Antlerite, Elemental Copper, Stromeyerite.
But it's the copper we're interested in here! The green color indicates that copper is a major constituent of whichever minerals make up this sample. In fact, I traded this sample for a few of my strange copper nodules.
Source: Calvin Webb
Contributor: Calvin Webb
Acquired: 1 September, 2003
Price: Donated
Size: 2"
Composition: Cu
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