Bayldonite
A variety of Minerals
What is Bayldonite?
Bayldonite (BAIL-done-ite) is a rare secondary mineral with the chemical formula PbCu3(AsO4)2(OH)2. It was first discovered in Penberthy Croft Mine, Cornwall, England, United Kingdom. It is named after its discoverer, John Bayldon (1837(8) – 1872). Specimens are also found in Tsumeb, Namibia, and Arizona, United States. It is sometimes used as a gemstone.
Bayldonite Market Value Calculator
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Bayldonite Localities Map
See where Bayldonite 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
- Green, apple-green, yellow-green, dark green to black
- Hardness (Mohs)
- 4.5
- Density
- 5.707 g/cm³
- Streak
- Siskin green to apple green
Chemical Properties
- Chemical Formula
- PbCu3(AsO4)2(OH)2
- Elements
- As, Cu, H, O, Pb
Also Known As
BayldoniteParabayldonite
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