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Stilbite & Apophyllite

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MGR213404

Stilbite & Apophyllite

Description Tabs

Description
Locality: 
Jalgoan Quarries, Maharashtra, India
Size Range: 
Museum (18cm plus)
Size: 
21 × 16 × 8.5 cm
Description

The contrast of this specimen is outstanding- Stilbite shows nearly red color, next to pale green blocky apophyllite crystals which are highly lustrous and with amazing texture on faces. The apophyllite group in the center is about 00 mm across. The assemble is very tridimensional, even more impressive caused by the large dimension. If you can accept small damages you will get an excellent, eye-catching and colorful specimen in museum-size.

Mineral Data
What's on the rock

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

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