~ Much of the copper of commerce is made from chalcopyrite and bornite, and these ores are more difficult to work.    From Wordnik.com.  [An Elementary Study of Chemistry] Reference

Mineralization is principally chalcopyrite, bornite, and electrum.    From Wordnik.com.  [Marketwire - Breaking News Releases]

Other minerals of considerable importance in some districts are chalcopyrite and bornite.    From Wordnik.com.  [The Economic Aspect of Geology] Reference

Copper mineralization consists of high grade chalcopyrite and bornite hosted in massive hematite mantos.    From Wordnik.com.  [The Earth Times Online Newspaper] Reference

Mixed copper mineralization may contain both chalcocite-covellite and chalcopyrite-bornite mineralization.    From Wordnik.com.  [The Earth Times Online Newspaper] Reference

The interval grading 0. 44\% Cu between 100 and 140 meters contains bornite, in addition to chalcocite, chalcopyrite and pyrite.    From Wordnik.com.  [Marketwire - Breaking News Releases] Reference

Mineralisation occurs in garnet-rich calc-silicate skarn with sulphide minerals including chalcopyrite, bornite and molybdenite.    From Wordnik.com.  [Latest News - Yahoo!7 News] Reference

Hana said the main copper minerals in the Southwest fold are malachite and chalcocite, unlike other areas which are predominantly bornite and chalcopyrite.    From Wordnik.com.  [AllAfrica News: Latest] Reference

On both lines holes have intersected significant copper mineralization comprising both chalcopyrite and bornite, predominantly in the two lower ore schist horizons.    From Wordnik.com.  [Equinox Q3-10 Results Generate Operating Profit of $166.4 million and Operating Cash Flow of $112.9 million - Yahoo! Finance] Reference

Stringers of chalcopyrite up to 5% by volume associated with a bornite-cemented breccia along a shear zone are exposed on a 40 metre high cliff face on the property.    From Wordnik.com.  [Marketwire - Breaking News Releases] Reference

The copper mineralization within the upper 300 metres of the deposit includes both supergene digenite-covellite and hypogene chalcocite-bornite replacing earlier chalcopyrite.    From Wordnik.com.  [Marketwire - Breaking News Releases]

In Rosicler, with its complex system of mineralized veins, veinlets, and stockworks, mineralization is represented by chalcopyrite-bornite-galena-sphalerite and pyrite assemblage.    From Wordnik.com.  [Marketwire - Breaking News Releases] Reference

Copper mineralization occurs as fine, stockworking veinlets, coarse clots and disseminations of bornite and chalcopyrite within the potassium-feldspar megacrystic to trachyitic syenite dykes.    From Wordnik.com.  [Marketwire - Breaking News Releases] Reference

The 3 meter chip sample was taken from a mineralized section which contains disseminated to coarse, clotty chalcopyrite and bornite which exhibits garnet and epidote alteration and extends for.    From Wordnik.com.  [Marketwire - Breaking News Releases] Reference

In DDH DOT-09-NW-06, trace native copper, chalcopyrite and more abundant bornite occur in thin quartz-hematite veinlets in granodiorite exhibiting moderate to strong argillic and potassic alteration.    From Wordnik.com.  [Marketwire - Breaking News Releases]

Within the corridor various historic production and exploration workings have encountered and locally exploited massive chalcopyrite plus chalcocite plus pyrite and/or bornite sulphide mineralization.    From Wordnik.com.  [The Earth Times Online Newspaper] Reference

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).    From Wordnik.com.  [Copper] Reference

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.    From Wordnik.com.  [Principles of Mining Valuation, Organization and Administration] Reference

Prior drilling and surface sampling has identified anomalous bornite mineralization in several areas that warrant additional follow up drilling including the JF area to the south where a historic resource was identified.    From Wordnik.com.  [Marketwire - Breaking News Releases]

Sulphide mineralisation within the copper mineralised zone comprises fairly ubiquitous pyrite up to 10\% and lesser copper sulphides predominantly as chalcopyrite with some chalcocite and minor bornite, particularly in holes LIN 2 and LIN 3.    From Wordnik.com.  [ACN Newswire] Reference

Specifically, most of the gold and copper discovered so far at La Cantera are spatially associated with quartz-magnetite-chalcopyrite+/- bornite veinlets in potassic altered porphyry and breccias containing elevated quantities of hydrothermal magnetite.    From Wordnik.com.  [Marketwire - Breaking News Releases] Reference

Staff geologists and consultants are working on development of a geologic model using all the information collected that will help explain the various characteristics of the deposit at depth, including the zones of high grade gold and high bornite content and focus further exploration at Red Chris.    From Wordnik.com.  [Marketwire - Breaking News Releases] Reference

Copper, gold, silver and molybdenum mineralization is associated with hydrothermally altered, sub-parallel and tabular breccia zones (quartz-tourmaline veinlets, stockwork and fracture fillings) containing sulphide-deficient occurrences of disseminated chalcopyrite, pyrite, bornite, chrysocolla and molybdenite.    From Wordnik.com.  [Marketwire - Breaking News Releases] Reference

300 metres of the deposit includes both supergene digenite-covellite and hypogene chalcocite-bornite replacing earlier chalcopyrite.    From Wordnik.com.  [The Earth Times Online Newspaper] Reference

& including Chalcopyrite-bornite zone 0.5.    From Wordnik.com.  [The Earth Times Online Newspaper] Reference

A bornite-bearing, higher grade core zone.    From Wordnik.com.  [Latest News from SYS-CON MEDIA] Reference

(2010 extension) Chalcopyrite-bornite zone 0.4.    From Wordnik.com.  [The Earth Times Online Newspaper] Reference

4 bornite.    From Wordnik.com.  [Chapter 6] Reference

The minerals which are commercially valuable include gold (found in small quantities), silver, graphite, galena, pyrite, marcasite, chalcosine, sphalerite, chalcopyrite, bornite, cuprite, hematite, limonite, ochre, chromite, magnetite, azurite, manganese, malachite, gypsum, &c.    From Wordnik.com.  [Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary"] Reference