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(c) Mineral Picture courtesy of www.yuprocks.com
Mineral Picture courtesy of www.yuprocks.com

DolomiteCaMg(CO3)2

Class: Carbonate
Hardness: 3.5 - 4
Density: 2.85
Streak: White
Lustre: Vitreous
Habit: Crystalline or aggregate, some with twin striae.
Colours: Pinky/peach, white, gray, brown.

  Crystal System: Hexagonal
Cleavage: Perfect rhombohedral
Fracture: Subconchoidal
Magnetism: None
Reaction with HCl: Weak

Identification in hand sample:
Harder than calcite

Associations:
Major constituent of dolostone (aka dolomite).

Industrial / ecomonic uses:
Used in manufacture of portland cement.

  

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