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Heulandite-Ca

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TBM812523

Heulandite-Ca

Description Tabs

Description
Locality: 
Drio le Pale, Buffaure Group, Trento Province, Trentino-Alto Adige, Italy
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10.5 × 8 × 4.4 cm
Description

Tabular crystals up to 5 mm size from the typical red color, typical of the locality and here particularly intense on basalt

Mineral Data
What's on the rock

Heulandite-Ca

Formula: 
(Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Strathclyde (Dunbartonshire), Scotland, UK