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 (krŏk′ō-īt′, krō′kō-) also croc·oi·site (krŏk′wə-zīt′)
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.]
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References in periodicals archive ?
lot 116, a "very fine specimen of crocoisite, Siberia" which fetched [pounds sterling]1.6.0 [[pounds sterling]1.30], and lot 136, a "very fine specimen of the rare mineral matlockite" which fetched a remarkably low 17s [85p].