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Mineral: Calcite
Description: {401}, {211}
Location: Derbyshire, England, UK
Author: HaĆ¼y, 1801/1823; Naumann, 1828. In: V.M. Goldschmidt, Atlas der Krystallformen, 1913-1923 ('Calcit').
System: Trigonal, point group: -32/m
Cell: a: 1, b: 1, c: 854, alpha: 90, beta: , gamma: 120