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Olivenite (Montana!)

Olivenite is a copper arsenate named for its olive green color. While known since the 18th century, it was Scottish mineralogist Robert Jameson (1774-1854) who first applied the currently accepted name to this species in his 1820 System of Mineralogy.

Olivenite forms pseudo-orthorhombic crystals to 4 mm in groupings on matrix. The olivenite crystals are well-formed, but have somewhat dull luster, as if weathered. Material collected by Bart Cannon in the 1970s. There is are two other green copper arsenates present, one of which appears to be cornwallite.

Price: $250

Item code: MS1663

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