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Ferberite (twin)
Tasna mine, Rosario section of Cerro Tasna, Nor Chichas Province, Potosi Department, Bolivia
grande macle : 6.8 x 5.8 x 3.8 cm
Acquis en 2014.
This piece features the classic, "butterfly" twinning of Ferberite along the a (100) face. This piece is a large, sharp, lustrous, aesthetic jet-black twinned crystal that is displayable from several angles.
Admittedly, there is some damage to the piece, but it is such a great, large twin, that the damage is somewhat forgivable in my mind.
It even has a small "baby" twin crystal in the center.
Collezione : Curiosités minérales