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Anglesite

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anglesite (ăng`gləsīt), pale green, blue, yellow-to-white, or colorless mineral, a sulfate of lead, PbSO4, that is formed by oxidation of galena galena or lead glance, lustrous, blue-gray mineral crystallizing usually in cubes, sometimes in octahedrons. It is the most important ore and the principal source of lead.
..... Click the link for more information. , crystallizing in the orthorhombic system and occurring also in granular or massive form. It is widely distributed and commonly associated with galena and other lead minerals. It is a secondary lead ore.
anglesite [′aŋ·glə‚sīt]
(mineralogy)
PbSO4A mineral occurring in white or gray, tabular or prismatic orthorhombic crystals or compact masses. Also known as lead spar; lead vitriol.
Anglesite 

lead sulfate, a mineral with the chemical composition PbS04. It contains 73.6 percent PbO. A variety that is rich in BaO (8.45 percent) is called weisbachite, or baritoanglesite. The crystals are orthorhombic, usually tabular, more rarely short columnar or dipyramidal. Angle-site more often forms compact granular or earthy masses. Its color is white with yellow, gray, and green casts caused by impurities; its luster is diamondlike. According to the minerological scale, its hardness is 2.5–3.0; its density is 6,100–6,400 kg per cu m.

Anglesite is formed chiefly in oxidized zones of lead and zinc sulfide deposits, in cases of a change in galena (PbS), often in association with cerussite (PbC03). It is formed hydrothermally under conditions of blending the ore-bearing solutions with surface waters saturated with free oxygen. Anglesite is used as an ore for lead smelting.
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Because of their high specific gravity, galena and anglesite concentrated on the bedrock surface as the fragments migrated downhill.
Great mining camps of Canada 1. The history and geology of the Keno ... by Cathro, R.J. / Geoscience Canada
Test material Phase 1 2 3 4 5 6 7 8 Anglesite -- 28 1 0.
Estimation of relative bioavailability of lead in soil and soil-like ... by Brattin, William J. / Environmental Health Perspectives
`` Some of the highlights include: Parys Mountain,on Anglesey, was once the world's largest copper mine and contains a wide range of minerals including pyrite, galena and the rare anglesite.
Diamonds are really a Welsh girl's best friend by Daily Post (Liverpool, England)
 
 
 
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