Hemimorphite - angew. Mineralogie

Hemimorphite
VIII - Sorosilicates

`Name`		`Hemimorphite` `(Zinc Silicate Calamine)`
`Chemistry`		`Zn₄[(OH)₂\|Si₂O₇]·H₂O`
`Hardness`		`5`
`Lustre`		`vitreous`
`Colour`		`colourless, white, light green, brown, tranparent, translucent`
`Streak`		`white`
`Density [g/cm³]`		`3.3 - 3.5`
`Crystal habit`		`orthorhombic, crystals small, tabular, hemimorph`
`Cleavage, Fracture`		`[110] perfect, fracture conchoidal`
`other characteristics and occurrences`		`often in crusts, together with smithsonite (ZnCO₃) (= galmei)`

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