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Thomsonite With Stilbite On Heulandite

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BMM569604

Thomsonite With Stilbite On Heulandite

Description Tabs

Description
Locality: 
Sakur, Ahmednagar District, Maharashtra, India
Class: 
Crystal Group/Cluster
Size Range: 
Cabinet (10-18 cm)
Size: 
10.2 × 7.2 × 3.3 cm
Description

Big well-formed reddish-beige half-spheres of thomsonite with some associated stilbite on small heulandite crystals, which gives nice accents. Perfectly crystallized and nicely composed.

Mineral Data
What's on the rock

Thomsonite

Synonym Of: 

Thomsonite-Ca

Formula: 
NaCa2[Al5Si5O20]·6H2O
Strunz: 
9.GA.10
Hardness: 
5.0 - 5.5

Thomsonite-Sr

Formula: 
Na(Sr,Ca)2[Al5Si5O20]·7H2O
Strunz: 
9.GA.10
Hardness: 
5.0 - 0.0

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

Heulandite

Synonym Of: 

Heulandite-Ba

Formula: 
(Ba,Ca,K,Na,Sr)5Al9Si27O72·22H2O
Strunz: 
9.GE.05
Hardness: 
3.5

Heulandite-Ca

Formula: 
(Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.5 - 4.0

Heulandite-K

Formula: 
(K,Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5

Heulandite-Na

Formula: 
(Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5

Heulandite-Sr

Formula: 
(Sr,Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5
Hardness: 
3 - 3.5
Colour: 
White
Streak: 
White
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