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Harmotome
Type Locality
St Andreasberg, St Andreasberg District, Harz, Lower Saxony, Germany
Mineral Data
(Ba
0.5
,Ca
0.5
,K,Na)
5
[Al
5
Si
11
O
32
] ·12H
2
O
Strunz:
9.GC.10
Physical Properties
Crystal System:
Monoclinic
Streak:
White
Hardness:
4.0 - 5.0
Tenacity:
brittle
Synonyms
Synonyms:
Andreolite, Andréolithe, Barytes Harmotome and Harmotom
