Barstowite

Barstowite

Barstowite from Passa Limani area, Lavrion District, Attiki Prefecture, Greece
General
Category Halide minerals
Formula
(repeating unit)		 Pb4[Cl6|CO3]•H2O
Strunz classification 3.DC.95
Crystal system Monoclinic
Crystal class Prismatic (2/m)
H-M symbol: (2/m)
Space group P21/m
Identification
Color White to transparent
Mohs scale hardness 3
Luster Adamantine
Streak White

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]

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

  1. 1 2 3 4 Barstowite at Mindat.org mineralogical website
  2. ↑ Mineralogical Record article on Richard Barstow
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