Collection: Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Colour: Colorless, white, pale blue, pale green, gray, brown
Luster: Sub-Adamantine, Vitreous, Sub-Vitreous, Greasy, Silky, Pearly
Hardness: 4½ - 5
Specific Gravity: 3.475
Crystal System: Orthorhombic
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