BORNITE

bornite, peacock ore

(noun) a mineral consisting of sulfides of copper and iron that is found in copper deposits

Source: WordNet® 3.1

Etymology

Noun

bornite (plural bornites)

(mineral) A reddish mineral that tarnishes on exposure to air; it is a mixed sulfide of iron and copper with the chemical formula Cu₅FeS and is an important ore of copper.

Synonyms

• erubescite

• peacock ore, peacock copper

Anagrams

• Bertino, robinet

Source: Wiktionary

Bor"nite, n. Etym: [Named after Von Born, a mineralogist.] (Min.)

Definition: A valuable ore of copper, containing copper, iron, and sulphur;

– also called purple copper ore (or erubescite), in allusion to the colors shown upon the slightly tarnished surface.

Source: Webster’s Unabridged Dictionary 1913 Edition

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