Formula: KCl
Origin of name: for F. Sylvius de la Boe, Dutch physician and chemist
Crystal system: cubic
Crystal class: 4/m -3 2/m
Twinning:
Unit cell: a = 6.29 Å
Colour: white, gray, bluish, reddish from hematite inclusions
Diaphaneity: transparent
Luster: vitreous
Habit: crystals cubic, octahedrons or cubo-octahedrons rare, massive, compact to granular, crusts, columnar
Hardness: 2
Specific gravity: 1.993
Cleavage: 1; {001} perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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