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Thomsonite-Ca

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FRE133455

Thomsonite-Ca

Description Tabs

Description
Locality: 
Cyclopean Islands, Aci Trezza, Etna, Catania Province, Sicily, Italy
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2 × 3.5 × 1 cm
Description

Beautiful, colorless, round aggregate (about 8 mm in diam.) of thomsonite-Ca crystals on basalt. Classic locality.

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

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