Browse Items (2 total)

Formula NaCl Structure Non-silicate Crystal System Crystal system: cubic Physical Properties Colour in hand specimen: colourless or white when pure, more typically orange or red due to inclusions of iron compounds, and may also be grey,…

Formula CaSO4 Structure Non-silicate Crystal System Crystal system: orthorhombic (+) Physical Properties Colour in hand specimen: white or colourless when pure Cleavage: two at 90° Hardness: 3-3.5 Optical Properties Colour in plane…