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Chabazite-Na Thomsonite Gonnardite Calcite & Gobbinsite

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PMN853369

Chabazite-Na Thomsonite Gonnardite Calcite & Gobbinsite

Description Tabs

Description
Locality: 
Bundoora, City of Whittlesea, Victoria, Australia
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
7 × 10 × 5.5 cm
Largest Crystal: 
1.50cm
Description

A piece of basalt full of cavities, most filled with a range of well formed and interesting minerals found at the location. In many the minerals occur as intergrown as well as free formed crystal groups. Note the presence of a few nice groups of gobbinsite on this piece.

Collected in 1999 by Dr. D.Vince. The location has been reclaimed and is now a parkland in a melbourne suburb.

Note buyers are responsible for local taxes and fees.We are happy to combine shipping - you only pay the stated shipping fee for the first specimen, subsequent pieces are included free of shipping costs.

 

Mineral Data
What's on the rock

Chabazite-Na

Formula: 
(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0
Streak: 
White
Type Locality: 
Rupe di Aci Castello, Aci Castello, Etna Volcanic Complex, Catania Province, Sicily, Italy

Thomsonite

Synonym Of: 

Thomsonite-Ca

Formula: 
NaCa2[Al5Si5O20]·6H2O
Strunz: 
9.GA.10
Hardness: 
5.0 - 5.5

Thomsonite-Sr

Formula: 
Na(Sr,Ca)2[Al5Si5O20]·7H2O
Strunz: 
9.GA.10
Hardness: 
5.0 - 0.0

Gonnardite

Formula: 
(Na,Ca)2(Si,Al)5O10·3H2O
Strunz: 
9.GA.05
Hardness: 
4.0 - 5.0
Type Locality: 
La Chaux de Bergonne, Gignat, Saint-Germain-Lembron, Puy-de-Dôme, Auvergne, France

Calcite

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

Gobbinsite

Formula: 
Na4(Ca,Mg,K2)Al6Si10O32·12H2O
Strunz: 
9.GC.05
Hardness: 
4.0
Type Locality: 
Hills Port, Gobbins, Island Magee, Co. Antrim, Northern Ireland, UK