Formula: K2SiF6
Origin of name: After locality; Latin name for Vulcano (Hiera), Lipari Islands, Italy
Crystal system: Cubic
Crystal class: 4/m -3 2/m
Twinning:
Unit cell:
Colour: Colourless, white, gray
Diaphaneity: Transparent
Luster: Vitreous
Habit: Stalactitic concretions, dense to spongy texture
Hardness: ~ 2.5
Specific gravity: 2.67
Cleavage: 1; {111} perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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