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Heulandite

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Watches:
MGR199287

Heulandite

Description Tabs

Description
Locality: 
Tambar Springs, New South Wales, Australia
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.9 × 7.3 × 4.2 cm
Description

This is really rare material and exceptional for heulandite. Red-orange color, crystal-size, luster - all these indicators are best for heulandite. I only know one discovery in brazil that also produced such eye-catching heulandite samples (but with much smaller crystals). And this specimen is even more special for the locality as it shows this amazing contrast and this aesthetic assemble. The exposed main crystal at the top is undamaged! in good condition overall.

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