
1) Brass-yellow minerals 2) Marcasite 3) Minerals of a type, sir 4) Minerals that look like gold 5) Pyrite 6) Shiny yellow minerals 7) Sulfide 8) Sulfide-containing group 9) Sulphide
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https://www.crosswordclues.com/clue/pyrites

1) Ore
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https://www.crosswordclues.com/clue/pyrites

• (n.) A name given to a number of metallic minerals, sulphides of iron, copper, cobalt, nickel, and tin, of a white or yellowish color. • (pl. ) of Pyrite
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http://thinkexist.com/dictionary/meaning/pyrites/
Py·ri'tes noun [ Latin , from Greek ..., from ... fire. See
Pyre .]
(Min.) A name given to a number of metallic minerals, sulphides of iron, copper, cobalt, nickel, and tin, of a white or yellowish color. » The term was originally applied to the mineral pyrite, or iron pyrites, in al...
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http://www.encyclo.co.uk/webster/P/203

A copper-iron sulphide mineral.
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http://www.metalbulletin.com/Glossary.html

[
n] - any of various metallic-looking sulfides (of which pyrite is the commonest)
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http://www.webdictionary.co.uk/definition.php?query=pyrites
noun any of various metallic-looking sulfides (of which pyrite is the commonest)
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https://www.encyclo.co.uk/local/20974

pyrite. · marcasite. · any of various other metallic sulfides, as of copper or tin.
Found on
https://www.infoplease.com/dictionary/pyrites
No exact match found.