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Goosecreekite Apophyllite & Stilbite

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PCZ627287

Goosecreekite Apophyllite & Stilbite

Description Tabs

Description
Locality: 
Jalgoan Quarries, Maharashtra, India
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 4.5 × 4 cm
Description

Sharp crystals of the rare and infrequently offered zeolite goosecreekite in association with sharp apophyllite crystals and pink stilbite.

Mineral Data
What's on the rock

Goosecreekite

Formula: 
Ca[Al2Si6O16]·5H2O
Strunz: 
9.GB.25
Hardness: 
4.5
Type Locality: 
New Goose Creek Quarry (Luck Company Quarry), Leesburg, Loudoun Co., Virginia, USA

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
Peter Crozier Minerals