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Stilbite & Calcite

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CSW126210

Stilbite & Calcite

Obtained from Eric Stanchic - 2005

Description Tabs

Description
Locality: 
Moore, Ridley Township, Delaware County, Pennsylvania, United States of America
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 5.5 × 3.2 cm
Description

Diabase matrix showing orange brown stilbite clusters with a partial overgrowth of tan coloured calcite crystals.

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White
Causeway Minerals

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