-
Chalcocite (/ˈkælkəˌsaɪt/), copper(I)
sulfide (Cu2S), is an
important copper ore mineral. It is
opaque and dark gray to black, with a
metallic luster....
- has the
chemical compound Cu2S. It is
found in
nature as the
mineral chalcocite. It has a
narrow range of
stoichiometry ranging from Cu1.997S to Cu2.000S...
- occurrences. It is
typically ****ociated with and
often intergrown with
chalcocite, covellite, djurleite, bornite,
chalcopyrite and pyrite. The type locality...
- microorganisms. Less commonly, the
replacement minerals in
petrified wood are
chalcocite or
other sulfide minerals.
These have been
mined as
copper ore at locations...
-
particularly noted in
copper ore
deposits where the
copper sulfide minerals chalcocite (Cu2S),
covellite (CuS),
digenite (Cu18S10), and
djurleite (Cu31S16) are...
- chalcopyrite.
Chalcopyrite and
bornite are both
typically replaced by
chalcocite and
covellite in the
supergene enrichment zone of
copper deposits. Bornite...
- 2–2.5 VHN100 = 16–18 Gold 2.5 VHN10 = 30–34
Silver 2.5 VHN100 = 61–65
Chalcocite 2.5–3 VHN100 = 84–87
Copper 2.5–3 VHN100 = 77–99
Galena 2.5 VHN100 = 79–104...
-
aggregates in a
secondary alkaline environment altering chalcocite. ****ociated
minerals include chalcocite, atacamite,
native copper, diopside, grossular, and...
-
chalcocite,
covellite and
digenite in the
enriched zone of
copper orebodies. It is a
member of the
chalcocite group, and very
similar to
chalcocite,...
- gr****-green meadow." The
green turned out to be malachite,
located with
chalcocite (aka "copper glance"), and the
location of the
Bonanza claim. A few days...
