Bayldonite
From Infogalactic: the planetary knowledge core
Bayldonite | |
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General | |
Category | Arsenate minerals |
Formula (repeating unit) |
PbCu3(AsO4)2(OH)2 |
Strunz classification | 08.BH.45 |
Identification | |
Color | Green, apple-green |
Crystal habit | Mammillary crust |
Mohs scale hardness | 4½ |
Luster | Resinous |
Density | 5.24–5.65 g/cm3 (measured), 5.707 g/cm3 (calculated) |
References | [1][2] |
Bayldonite (BAIL-done-ite)[3] 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.[3] It is named after its discoverer, John Bayldon (1837(8) – 1872).[4] Specimens are also found in Tsumeb, Namibia, and Arizona, United States. It is sometimes used a gemstone.[5]
References
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- ↑ A. H. Church: XLI.—Chemical researches on some new and rare cornish minerals. In: Journal of the Chemical Society, 1865, 18, S. 259-268, doi:10.1039/JS8651800259.
- ↑ Gemstones: Properties, Identification and Use By Arthur Thomas, p.159
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