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Howlite
Type Locality
Black's quarry, Brookville farm, Martock, West Hants, Hants Co., Nova Scotia, Canada
Mineral Data
Ca
2
B
5
SiO
9
(OH)
5
Strunz:
6.CB.20
Physical Properties
Streak:
White
Hardness:
3.5 - 6.5
