The silver can be found in structure of chalcopyrite and bornite
From approximately 38 to 41 metres downhole is a mixed primary and supergene sulphide zone consisting of chalcocite, pyrite, and bornite
vein swarms with traces of malachite seen on fractures.
The chalcopyrite pods are usually, but not always, enveloped by a rind of bornite
that clearly replaces the chalcopyrite, and the bornite
is commonly replaced by chalcocite in both monoclinic and hexagonal polymorphs, the latter of which suggests a minimum temperature of formation of 105[degrees]C.
The ore mineralogy exhibits zoning with bornite
(and chalcocite) at the core grading out to chalcopyrite on the periphery.
Removal of the waste rock revealed the presence of some extreme unexpected and unknown high grade copper and silver ores, such as the important copper ore mineral bornite
, the beautiful crystal covellite, and the high yielding copper ore cuprite.
This year's program will focus on advancing the Arctic copper-zinc-lead-silver-gold deposit to pre-feasibility and continue exploration drilling at the Bornite
Deposit (a copper prospect in Northwest Alaska).
Trilogy's exploration efforts in the Ambler district have focused on the high-grade, polymetallic Arctic deposit and the Bornite
carbonate replacement deposit, both located within the company's land package of approximately 143,000 ha.
Rick and Joe are being recognized for their success in defining and significantly expanding the Donlin Creek gold deposit and the Arctic copper-zinc-silver massive sulphide deposit and for exploration success at the Bornite
is fairly common in zone 3 of the lower amygdaloid, occurring as dodecahedral crystals from 0.
This deposit is chalcopyrite dominant, followed by bornite
with minor covellite, digenite, minor electrum, minor native gold and silver with traces of native copper.
In the underground workings sulphide mineralogy consists of bornite
Malachite and azurite, along with primary hypogene chalcocite copper mineralization and the presence of bornite
and chalcopyrite, have been identified to at least 100 m of depth.
The combination of NovaCopper and Sunward will create a leading exploration and development company with a balance sheet of approximately USD 23m in cash for the advancement of the Arctic and Bornite
deposits located in the Ambler mining district of Alaska, USA.
Multi phase quartz veins that host chalcopyrite, bornite
, tetrahedrite, arsenopyrite and yield up to 31 g/t Au and 0.
Besides rhodochrosite, the most important collector species at the Sweet Home mine are fluorite, tetrahedrite/tennantite, pyrite, quartz, sphalerite, galena, hubnerite, bornite
, fluorapatite and chalcopyrite.