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www.mineralgallery.co.za Minerals A-E |
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Brucite |
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Name
Brucite
Chemistry
Mg(OH)2
Uses
As a mineral specimen
Color-
Commonly beige or tan, seldom blue and greenish
Hardness
3
Specific gravity
2.5
Crystal system:
Hexagonal
Accompanied by:
Ettringite, Calcite
Fracture
Uneven
Luster
Vitreous
Cleavage
Good to indistinct.
Streak
White
Similar to:
Dolomite, Mica, Magnesite
Brucite derives its name from the American mineralogist A. Bruce.
Brucite occurs at Wessels and N'Chwaning I and II mines, as soft platy aggregates, usually beige, tan or cream colored, recently some sea-green and blue specimens was found at Wessels.
Some display foliated rosette-like structures. Terminated, hexagonal barrel-shaped crystals are also known.
It is normally found as platy masses.
Brucite is often found in hydothermal veins in serpentine, in chlorite or dolomitic schists, or in crystalline limestones as an alteration product of periclase.
