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Heulandite With Caledonite

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FFM833091

Heulandite With Caledonite

Classic Locality

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Description
Locality: 
Jalgoan Quarries, Maharashtra, India
Class: 
Crystal Group/Cluster
Size Range: 
Cabinet (10-18 cm)
Size: 
10.5 × 7.8 × 4.8 cm
Description

Nice cabinet-sized Heulandite included with Caledonite with nice luster and crystal “twist”.  The green color varies across the specimen from an olive to a light teal tone. Displays well, and as with most specimens, looks much better in person.

Mineral Data
What's on the rock

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

Caledonite

Formula: 
Pb5Cu2(SO4)3(CO3)(OH)6
Strunz: 
7.BC.50
Crystal System: 
Orthorhombic
Hardness: 
2.5 - 3.0
Type Locality: 
Leadhills, South Lanarkshire, Strathclyde (Lanarkshire), Scotland, UK

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