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Heulandite-Ca

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DVE111278

Heulandite-Ca

Ex-David J. Eicher Collection

Description Tabs

Description
Locality: 
Pune (Poonah), Maharashtra, India
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.5 × 6.8 × 3 cm
Description

Very rich plate of interpenetrating heulandite-ca crystals, most of which are dark brown (“chocolate”) color. A few on top of the specimen are lighter colored, creating a fine field of crystals for display.

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
David J. Eicher

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