How To Use Bornite In A Sentence
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In the periphery of the oxidation, copper mineralization occurs as chalcopyrite, bornite, tennantite and mispickel.
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~ Much of the copper of commerce is made from chalcopyrite and bornite, and these ores are more difficult to work.
An Elementary Study of Chemistry
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Iron and copper sulfides of this region are predominately pyrite, pyrrhotite, chalcopyrite, arsenopyrite, bornite, and marcasite.
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Fine specimens of silver associated with stromeyerite, bornite, and chalcopyrite have been recovered from the Silver King mine, Pinal County.
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The Albert and Argent mines, South Africa, have produced arborescent masses of silver, some to several kilograms in weight and often in, or associated intimately with, bornite.
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Iron and copper sulfides of this region are predominately pyrite, pyrrhotite, chalcopyrite, arsenopyrite, bornite, and marcasite.
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Some of the best bornite specimens consist of plates of 5-mm blue-gray crystals upon which are perched large, complex chalcopyrite crystals.
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Acanthite was relatively abundant in what was known as the Mount Lyell Bonanza at the Mount Lyell mine, Tasmania, where it occurred with chalcocite, bornite, and tetrahedrite in ores that ran as high as 1,011 ounces of silver per ton.
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Copper minerals occurring in deposits large enough to mine include azurite (Cu3 (CO3) 2 (OH) 2), malachite (Cu2CO3 (OH) 2), tennantite ((Cu, Fe) 12As4S13), chalcopyrite (CuFeS2), and bornite (Cu5FeS4).
Copper
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Lovering, Tweto, and Lovering noted small veinlets of tetrahedrite cutting interbanded chalcopyrite and bornite.
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Mixed copper mineralization may contain both chalcocite-covellite and chalcopyrite-bornite mineralization.
The Earth Times Online Newspaper
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When it rises through fractures in the surrounding solid rocks, these metals are precipitated, normally as the minerals chalcopyrite, bornite, and molybdenite.
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Some of the chalcopyrite is rimmed by bornite and more rarely by covellite and/or chalcocite.
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The copper mineralization within the upper 300 metres of the deposit includes both supergene digenite-covellite and hypogene chalcocite-bornite replacing earlier chalcopyrite.
Marketwire - Breaking News Releases
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Some of the chalcopyrite is rimmed by bornite and more rarely by covellite and/or chalcocite.
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Other minerals suggested as coloring agents are malachite, tenorite, and bornite.
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In the easy recognition of the secondary copper sulphides, chalcocite, bornite, etc., the engineer finds a finger-post on the road to extension in depth; and the directions upon this post are not to be disregarded.
Principles of Mining Valuation, Organization and Administration
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We have not seen any good crystals of bornite from Gilman.
