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Thomsonite-Ca On Calcite

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ZLT180637

Thomsonite-Ca On Calcite

Description Tabs

Description
Locality: 
El Charco, Gran Tarajal, Tuineje, Fuerteventura, Canary Islands, Spain
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
2.8 × 5 × 3.5 cm
Description

Long prismatic tabular and tabular crystals of thomsonite Ca on calcite. (Two forms.) From a road cut collected in 1996.

Mineral Data
What's on the rock

Thomsonite-Ca

Formula: 
NaCa2[Al5Si5O20]·6H2O
Strunz: 
9.GA.10
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Old Kilpatrick, Strathclyde (Dunbartonshire), Scotland, UK

Calcite

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

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