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Heulandite-Ca

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MEX190721

Heulandite-Ca

Classic Locality

Description Tabs

Description
Locality: 
Mount Oladri Quarries, Monastir, South Sardinia Province, Sardinia, Italy
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.8 × 3.7 × 2.8 cm
Description

Nice specimen with zoned heulandite crystals. In the center the crystals are reddish, outside white translucent.

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