Stilbite, rock, crystal, mineral, gem stone, birth stones

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Minerals P-T

Stilbite

Name

Stilbite

Chemistry

CaAL2SI7O18.7H2O

Uses

It has no economical uses, only as mineral specimens

Color

White but occasionally yellow, brown to red.

Hardness

3.5-4

Specific gravity

2.094-2.205

Crystals

Monoclinic. A common habit of stilbite is as crystals in cruciform penetration twins. Tabular and sheaf like aggregates are also common.

Accompanied by:

Heulandite, laumontite and chabazite

Fracture

Uneven

Luster

Vitreous

Cleavage

Perfect

Streak

Uncolored

Similar to:

Phillipsite and harmotome

Stilbite is one of the zeolite family of hydrous silicates with similar modes of occurence and similar properties. The sheaf-like aggregates, cleavage and lustre of stilbite are characteristic. Stilbite occurs mainly in amygdaloidal cavities in basalts and similar eruptive rocks, usually associated with other zeoolitesand with calcite. Also in granite, gneiss and metalliferous deposits.

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	www.mineralgallery.co.za Minerals P-T
Stilbite
Name	Stilbite
Chemistry	CaAL2SI7O18.7H2O
Uses	It has no economical uses, only as mineral specimens
Color	White but occasionally yellow, brown to red.
Hardness	3.5-4
Specific gravity	2.094-2.205
Crystals	Monoclinic. A common habit of stilbite is as crystals in cruciform penetration twins. Tabular and sheaf like aggregates are also common.
Accompanied by:	Heulandite, laumontite and chabazite
Fracture	Uneven
Luster	Vitreous
Cleavage	Perfect
Streak	Uncolored
Similar to:	Phillipsite and harmotome
Stilbite is one of the zeolite family of hydrous silicates with similar modes of occurence and similar properties. The sheaf-like aggregates, cleavage and lustre of stilbite are characteristic. Stilbite occurs mainly in amygdaloidal cavities in basalts and similar eruptive rocks, usually associated with other zeoolitesand with calcite. Also in granite, gneiss and metalliferous deposits.