Anglesite ( English Anglesit , lead vitriol , sulfur-lead ore ) - a mineral , anhydrous lead sulfate . The chemical formula of Pb S O 4 . Chemical composition: PbO - 73.6% and SO 3 - 26.4%. Isomorphic with barite and celestin . It is formed in nature mainly due to the oxidation of galena ( lead sulfide ). Named after the original find on the island of Anglesey in Wales .
| Anglesite | |
|---|---|
 Anglesite Tabular Crystal | |
| Formula | PbSO 4 |
| Impurity | Ba, cu |
| Physical properties | |
| Colour | Colorless white |
| Trait color | White |
| Shine | Diamond |
| Transparency | Water transparent |
| Hardness | 3 |
| Cleavage | Medium / Imperfect |
| Kink | Crayfish |
| Density | 6.1 - 6.4 g / cm³ |
| Syngonia | Rhombic |
Properties
Syngonia is rhombic. Anglesite crystals are rich in combinations of faces and are diverse in shape, partly pyramidal, partly shortened, vertically columnar, partly horizontal columnar, and also tabular. The mineral has a diamond or oily sheen, crystals are colorless and often transparent, but can be colored with impurities in a yellowish or grayish color. Hardness 3, density about 6.3. In hydrochloric acid, the mineral is difficult to dissolve, in potassium hydroxide it is completely soluble.
The mineral is toxic, like other lead minerals.
Deposits
Fine crystals of Anglesite were found in Badenweiler , Schwarzenbach and Mies (in Carinthia ), in Moravic and Felsebania (in Hungary ), in Lidgils (in Scotland ), on the island of Anglesi (hence the name), mainly in Iglesias and Monte Pony (in Sardinia ), in Nerchinsk (in Siberia ) and in Phoenixville (in Pennsylvania ). In deposits where A. is in large quantities, it is part of complex lead ores and, together with other lead minerals, is used to produce lead.
Links
- Anglesite // Encyclopedic Dictionary of Brockhaus and Efron : in 86 volumes (82 volumes and 4 additional). - SPb. , 1890-1907.
- Anglesite in the base of minerals
- Anglesite at GeoWiki