Barstowite

Barstowite, formula Pb4[Cl6|CO3]•H2O, is a transparent to white mineral in the monoclinic system.[1] It has a Mohs hardness of 3, a white streak and an adamantine lustre.[1]

Barstowite
Barstowite from Passa Limani area, Lavrion District, Attiki Prefecture, Greece
General
CategoryHalide minerals
Formula
(repeating unit)
Pb4[Cl6|CO3]•H2O
Strunz classification3.DC.95
Crystal systemMonoclinic
Crystal classPrismatic (2/m)
(same H-M symbol)
Space groupP21/m
Identification
ColorWhite to transparent
Mohs scale hardness3
LusterAdamantine
StreakWhite

The type locality for Barstowite is Bounds Cliff, St Endellion, Cornwall in the United Kingdom.[1] It is named after Richard W. Barstow[1] (1947–1982), a Cornish mineral collector.[2]

References

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