Formula: Ca7(Si3O9)CO3.2H2O
Origin of name: after locality Scawt Hill, County Antrim , Ireland
Crystal system: monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: colourless
Diaphaneity:
Luster: vitreous
Habit: crystals thin tabular, bundles and subparallel or divergent groups, lath-like grains, microscopic
Hardness: 4.5 to 5
Specific gravity: 2.77
Cleavage: 2; {010} fair, {001} perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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