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Chabazite On Calcite

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GND58238

Chabazite On Calcite

Description Tabs

Description
Locality: 
Giblin Street Quarry, Lenah Valley, Hobart, Tasmania, Australia
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.7 × 6.8 × 1.7 cm
Description

A thin but solid plate of white chabazite crystals covering the top of the specimen. The chabazite has formed on bladed yellow calcite crystals which can be seen exposed on the top edge and base of the specimen in the photos.

There are a couple of barely noticeable chips to the chabazite which has served to expose the calcite crystal it has formed around.

Mineral Data
What's on the rock

Chabazite

Synonym Of: 

Chabazite-Ca

Formula: 
(Ca,K2,Na2)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 5.0

Chabazite-K

Formula: 
(K2,Ca,Na2,Sr,Mg)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0

Chabazite-Mg

Formula: 
(Mg0.7K0.5Ca0.5Na0.1)[Al3Si9O24]·10H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 0.0

Chabazite-Na

Formula: 
(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0

Chabazite-Sr

Formula: 
Sr2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 4.5

Calcite

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