
1) Lead mineral 2) Monoclinic mineral
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https://www.crosswordclues.com/clue/crocoite

Crocoite is a mineral consisting of lead chromate, PbCrO4, and crystallizing in the monoclinic crystal system. It is identical in composition with the artificial product chrome yellow used as a paint pigment. Crocoite is commonly found as large, well-developed prismatic crystals, although in many cases are poorly terminated. Crystals are of a brig...
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http://en.wikipedia.org/wiki/Crocoite

• (n.) Lead chromate occuring in crystals of a bright hyacinth red color; -- called also red lead ore.
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http://thinkexist.com/dictionary/meaning/crocoite/

mineral consisting of lead chromate, PbCrO4, that is identical in composition to chrome yellow, the artificial product used in paint. The element ... [1 related articles]
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http://www.britannica.com/eb/a-z/c/160
Cro'co·ite noun [ Greek ............ saffron.]
(Min.) Lead chromate occuring in crystals of a bright hyacinth red color; -- called also
red lead ore .
Found on
http://www.encyclo.co.uk/webster/C/190

Crocoite is a rare mineral found in the oxidized zones of lead deposits where lead veins have traversed rocks containing chromite. Not abundant enough to be of commercial value although it does contain chromium. It's name is Greek and means 'saffron', an allusion to its colour. It has the formulae PbCrO4 and a relative hardness of 3.
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http://www.probertencyclopaedia.com/browse/HC.HTM

Lead chromate
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http://www.translationdirectory.com/glossaries/glossary075.htm
(Lead Chromate) Crocoite is a rather unusual lead mineral and can be a beautiful and colorful specimen. Crocoite provides a nice color to the mineral kingdom and is well known for its distinctive orange-red color. Its main source of quality specimens comes from the Dundas District of Tasmania, Australia. The crystals there are u...
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https://www.encyclo.co.uk/local/23719

a yellow, orange, or red mineral, lead chromate, PbCrO, formed by replacement. Also called
Found on
https://www.infoplease.com/dictionary/crocoite
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