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wulfenite

wulfenite Mineral, PbMoO4; sp. gr. 6.5–7.0; hardness 3; tetragonal; orange-yellow, olive-green, or brown; white streak; resinous lustre; crystals usually square plates or tablets, sometimes occurs massive, granular, or botryoidal; cleavage good {101}; sub-conchoidal fracture; occurs as a secondary mineral in the oxidized zones of ore minerals of lead and molybdenum, and in association with anglesite, cerussite, and pyromorphite.

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"wulfenite." A Dictionary of Earth Sciences. . Encyclopedia.com. 23 Aug. 2017 <http://www.encyclopedia.com>.

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"wulfenite." A Dictionary of Earth Sciences. . Retrieved August 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/wulfenite

anglesite

anglesite Secondary lead mineral, PbSO4; sp. gr. 6.3–6.4; hardness 3; orthorhombic; normally colourless to white, but sometimes yellow, grey, or coloured by a bluish tinge; white streak; adamantine lustre; crystals tabular, prismatic, or pyramidal, or occurring as massive, granular, or compact aggregations; normally occurs in the oxidized zone of lead deposits, and often surrounds a core of galena.

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"anglesite." A Dictionary of Earth Sciences. . Retrieved August 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/anglesite

anglesite

anglesite (ăng´gləsīt), pale green, blue, yellow-to-white, or colorless mineral, a sulfate of lead, PbSO4, that is formed by oxidation of galena, 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.

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"anglesite." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 23 Aug. 2017 <http://www.encyclopedia.com>.

"anglesite." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (August 23, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/anglesite

"anglesite." The Columbia Encyclopedia, 6th ed.. . Retrieved August 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/anglesite