Formula: ZnSO4 .7H2O
Origin of name: Locality; Goslar, Harz Mts., Germany
Crystal system: Orthorhombic
Crystal class: 222
Twinning:
Unit cell:
Colour: Colourless; massive: white, greenish, bluish, brownish
Diaphaneity: Transparent
Luster: Vitreous
Habit: Massive, granular, fibrous; stalactitic; efflorescent crusts
Hardness: 2 to 2.5
Specific gravity: 1.98
Cleavage: 1; {010} perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments: Readily dehydrates; soluble in water
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