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crocoite

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croc·o·ite  (krk-t, krk-) also croc·oi·site (krkw-zt)
n.
A rare lead chromate mineral, PbCrO4, that forms brilliant orange crystals.
[Alteration of French crocoise, from Greek krokoeis, saffron-colored, from krokos, saffron; see crocus.]
crocoite [ˈkrəʊkəʊˌaɪt], crocoisite [krəʊˈkəʊɪˌsaɪt ˈkrəʊkwəˌsaɪt]
n
(Earth Sciences / Minerals) a rare orange secondary mineral consisting of lead chromate in monoclinic crystalline form. Formula: PbCrO4 Also called red-lead ore
[from Greek krokoeis saffron-coloured, golden + -ite1]
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Chromium oxide was discovered as being a part of crocoite, better known as red lead, which is actually lead chromate, sometimes containing some molybdate and perhaps vanadium.
Did You Know the Trace Element Chromium Could Help Your Body?s Cells ... by Darrell Miller / Food/cooking/nutrition community
Conservators had noticed that some paintings using crocoite have become discolored, but researchers hadn't pinned down the cause.
Living history: cultural artifacts are crawling with damaging microbes by Brownlee, Christen / Science News
 
 
 
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