Formula: HKCa2Si8O19.5H2O
Origin of name: for C. Rhodes, British financier
Crystal system: orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: white
Diaphaneity:
Luster: silky
Habit: fibrous, matted, silky, forming rosettes to 2 mm
Hardness: 4
Specific gravity: about 2.4
Cleavage: 1; {100} good
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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