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Mineral: Pyrite
Description: penetration twin [110] (iron cross twin)
Location:
Author: WeiƟ, 1817. In: V.M. Goldschmidt, Atlas der Krystallformen, 1913-1923.
System: Cubic, point group: m3
Cell: a: 1, b: 1, c: 1, alpha: 90, beta: , gamma: 90