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Harkerite
Type Locality
Camas Malag, Torrin, Broadford, Isle of Skye, North West Highlands (Inverness-shire), Scotland, UK
Mineral Data
Ca
12
Mg
4
Al(BO
3
)
3
(SiO
4
)
4
(CO
3
)
5
·H
2
O
Strunz:
6.AB.70
Physical Properties
Streak:
White
Hardness:
0.0
Tenacity:
brittle
