Alabaster (Gypsum)CaSO4 - 2H2O|
Habit: Granular / massive form of gypsum
Colours: Colourless or white (typical)
| ||Crystal System: Monoclinic|
Reaction with HCl: Weak
Identification in hand sample:
Identified by hardness and good cleavage.
Common in marine evaporite deposits.
Industrial / ecomonic uses:
Modern use is in gypsum wallboard used in construction. Used as an ornamental stone and for sculpture due to its softness.
Also known as "satin spar".