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Calcite & Chabazite

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CSW825219

Calcite & Chabazite

Self collected April 2006

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Description Tabs

Description
Locality: 
Craighill Quarry, Ballyclare, County Antrim, Northern Ireland, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
11 × 10.5 × 7.5 cm
Weight: 
1 050.00gr
Description

Heavy basalt matrix with a large amygdale lined with lots of golden brown, scalenohedral calcite crystals which have overgrown small colourless chabazite crystals. Many of the calcite crystals have a partial overgrowth of micro colourless thomsonite crystals. Under short wave UV light the calcite crystals display a nice pastel yellow fluorescence with mild phosphorescence.

Mineral Data
What's on the rock

Calcite

Polymorph of: 
Aragonite and Vaterite
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

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

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