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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 galenagalena
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.
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.