Smithsonite
V - Carbonates |
Name | Smithsonite
(Zinc Spar, Galmei) |
|
Chemistry | ZnCO3 | |
Hardness | 4 - 4.5 | |
Lustre | vitreous | |
Colour | yellow, grey, white, brown, greenish, bluish, red | |
Streak | white | |
Density [g/cm3] | 4.3 - 4.5 | |
Crystal habit | trigonal, crystals rhombohedrons, scalenohedrons, often curved faces | |
Cleavage, Fracture | [1011] perfect, fracture uneven | |
other characteristics and occurrences | massive, kidney-like, botryoidal,
granular, radial, earthy
with hemimorphite (Zn4[(OH)2|Si2O7]·H2O) = galmei |
|