Tetrahedrite pseudomorph after Bournonite Machacamarca Mine, Machacamarca, Potosí Department, Bolivia 2.87cm x 1.67cm x .85cm Ex. David E. Ellis Collection

Description/Interesting Notes: A terrific example of tetrahedrite after bournonite from Bolivia!!! This specimen consists of a complex "cog-wheel" crystal of bournonite that has been replaced by tetrahedrite!!! Upon close inspection one can see all manner of complex crystalline features scattered across the specimen!!! This specimen is from the collection of David E. Ellis and retains his label as well!!! The pics hardly do it justice!!! Good luck and be sure to check out my other exciting mineral auctions on ebay!!!

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