chalcocite
noun
chal·co·cite
ˈkal-kə-ˌsīt 
: a black or gray lustrous metallic mineral that consists of a sulfide of copper and is an important copper ore
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Materials like the copper ore mineral chalcocite and fool's gold, pyrite, are sulfidic anions.
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David Grossman, Popular Mechanics, 9 Apr. 2018
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David Grossman, Popular Mechanics, 9 Apr. 2018
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“Chalcocite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chalcocite. Accessed 25 Dec. 2024.
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