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Chabazite On Ferroan Calcite

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PJM152001

Chabazite On Ferroan Calcite

Ex Brian Shelton Collection

Description Tabs

Description
Locality: 
Corporation Quarry, Clifton Hill, Collingwood, Yarra, Victoria, Australia
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.7 × 1.5 cm
Description

A fine example from the late 1800's of calcite variety ferroan calcite with a complete chabazite variety phacolite crystal from the classic dana locality in Clifton Hill. The ferroan calcite is a silky tan spray that radiates out from a millimetre point of attachment and the chabazite is a glassy colourless phacolite twin with an second smaller crystal at 90 degrees to the first

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

Ferroan Calcite

Variety Of: 

Calcite

Formula: 
CaCO3
Strunz: 
5.AB.05
Hardness: 
3.0
Formula: 
(Ca,Fe)CO3
Hardness: 
0.0
Earthstones Australia

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