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Heulandite-Na

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SHS624747

Heulandite-Na

Description Tabs

Description
Locality: 
Col de Valvacin Mountain, Buffaure Group, Trento Province, Trentino-Alto Adige, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 2.1 × 1.5 cm
Description

Nice red heulandite na crystals on matrix

Mineral Data
What's on the rock

Heulandite-Na

Formula: 
(Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5
Streak: 
White
Type Locality: 
Unnamed pit, Challis, Bay Horse District, Custer Co., Idaho, USA