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pyromorphite

[pahy-ruh-mawr-fahyt] /ˌpaɪ rəˈmɔr faɪt/
noun
1.
a mineral, lead chlorophosphate, Pb 5 P 3 O 1 2 Cl, occurring in crystalline and massive forms, and of a green, yellow, or brown color; green lead ore: a minor ore of lead.
Origin
1805-1815
1805-15; < German Pyromorphit. See pyro-, morph-, -ite1
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for pyromorphite

pyromorphite

/ˌpaɪrəʊˈmɔːfaɪt/
noun
1.
a green, yellow, brown, or grey secondary mineral that consists of lead chloro-phosphate in the form of hexagonal crystals. Formula: Pb5Cl(PO4)3
Word Origin
C19: from German Pyromorphit, from pyro- + Greek morphē form + -ite1, an allusion to the fact that it assumes a crystalline form when heated
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for pyromorphite

phosphate mineral, lead chloride phosphate [Pb5(PO4)3Cl], that is a minor ore of lead. It occurs with galena, cerussite, and limonite in the oxidized zone of lead deposits, where it forms very brightly coloured, heavy, barrel-shaped crystals or globular masses. For properties, see phosphate mineral (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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