The transition zone is composed of chalcocite and bornite with malachite on fractures and a minor amount of chalcopyrite.
From the foxbusiness.com
While the hole contains visible sulphides in its entirety, pyrite is dominant with lower order chalcopyrite, bornite and arsenopyrite.
From the foxbusiness.com
The ores with the highest sulfide contents, such as bornite and chalcopyrite will require more oxidants and will dissolve more slowly.
From the en.wikipedia.org
Mineralization is in the form of pyrite and chalcopyrite with minor bornite disseminations and quartz veinlets, hosted by granitic and pegmatitic facies.
From the forbes.com
If the results indicate good recovery of the chalcocite and bornite, the transition zone might be added to the evaluation of the oxide material.
From the foxbusiness.com
Chalcocite has been known to form pseudomorphs of the minerals bornite, covellite, chalcopyrite, pyrite, enargite, millerite, galena and sphalerite.
From the en.wikipedia.org
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A mineral consisting of sulfides of copper and iron that is found in copper deposits
Bornite is a sulfide mineral with chemical composition Cu5FeS4 that crystallizes in the orthorhombic system.
(peacock ore) (chemistry) Bornite [ sulphide of Cu and Fe, copper ore ] - See Erubescite
When used in the healing situation, in or on the area of the body above the waist, it can help to regulate the flow of adrenaline, to increase alkalinity when there is too much acid, to increase the assimilation* of potassium and to decrease excess levels of calcium {especially in the condition ...
Bariegated or purple copper ore. This is a quite rare mineral. A few pieces have been found in the copper diggings near Mineral Point.