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Heulandite-Ca

Type Locality
Strathclyde (Dunbartonshire), Scotland, UK
Mineral Data
(Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Physical Properties
Streak: 
White
Hardness: 
3.5 - 4.0
Tenacity: 
brittle
Synonyms
Synonyms: 
Heulandite Ca and Heulandite - Ca
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