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Heulandite-Na
Type Locality
Unnamed pit, Challis, Bay Horse District, Custer Co., Idaho, USA
Mineral Data
(Na,Ca)
2-3
Al
3
(Al,Si)
2
Si
13
O
36
·12H
2
O
Strunz:
9.GE.05
Physical Properties
Streak:
White
Hardness:
3.0 - 3.5
Tenacity:
brittle
Synonyms
Synonyms:
Heulandite Na and Heulandite - Na
