Barstowite
A variety of Minerals
What is Barstowite?
Barstowite, formula Pb4[Cl6|CO3]•H2O, is a transparent to white mineral in the monoclinic system. It has a Mohs hardness of 3, a white streak and an adamantine lustre. The type locality for Barstowite is Bounds Cliff, St Endellion, Cornwall in the United Kingdom. It is named after Richard W. Barstow (1947–1982), a Cornish mineral collector.
Barstowite Market Value Calculator
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Barstowite Localities Map
See where Barstowite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
Quick Facts
Physical Properties
- Color
- Transparent to white
- Hardness (Mohs)
- 3
- Density
- 5.77 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- Pb4Cl6(CO3) · H2O
- Elements
- C, Cl, H, O, Pb
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