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Mineral: Tourmaline
Description: {100}, {110}, {011}, {-101}, modified
Location: Greenland
Author: HaĆ¼y, 1801, and others ('Turmalin'). In: V.M. Goldschmidt, Atlas der Krystallformen, 1913-1923.
System: Trigonal, point group: 3m
Cell: a: 1, b: 1, c: 452, alpha: 90, beta: , gamma: 120