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Apophyllite Stilbite

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MGR761465

Apophyllite Stilbite

Description Tabs

Description
Locality: 
Pashan, Pune District, Maharashtra, India
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.8 × 6.2 × 4.7 cm
Description

This is a superb specimen - most specimen are just pale green, the saturation of this particular piece is really top for the locality. The crystals are water-clear, razor sharp terminatedand highly lustrous. They show great contrast to white and dark grey matrix. The assemble couldn´t be better - the largest crystals are set at the top of the piece. No significant damages to report.

Mineral Data
What's on the rock

Apophyllite

Synonym Of: 

Fluorapophyllite-(K)

Formula: 
KCa4(Si8O20)(F,OH)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.5 - 5.0

Fluorapophyllite-(Na)

Formula: 
NaCa4(Si8O20)F·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

Hydroxyapophyllite-(K)

Formula: 
KCa4(Si8O20)(OH,F)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

Stilbite

Synonym Of: 

Stilbite-Ca

Formula: 
NaCa4[Al9Si27O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0

Stilbite-Na

Formula: 
(Na,Ca,K)6-7[Al8Si28O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0
Hardness: 
3.5 - 4
Colour: 
White
Streak: 
White