Barium Barite
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Barite.
The tag that came with sample reads as follows:
Barite - BaSO4, from Sandoval Co., NM.
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: 1"
Composition: BaSO4
Barium