Question

Is copper glance an oxide ore?

Answer 1

Hint: In order to answer this question, we need to understand what an oxide ore is and what compounds fulfil the characteristics to be identified as an oxide ore. Oxide ores are the ores which contain the metal in oxidized form, which means that oxidation of metal takes place.

Complete answer:
A deposit of one or more valuable minerals in the Earth's crust is known as ore. Metals that are crucial to industry and trade can be found in the most important ore deposits, such as copper, silver, and iron. Copper ore is mined for use in a variety of industries. Copper is utilized as an electrical wire because it is an excellent conductor of electricity.
Copper is extracted from underground or open-pit mines from ores in the earth. The majority of copper ores nowadays are oxide or sulfide ores.
Copper glance is a mineral that crystallizes in the orthorhombic system and is made up of cuprous sulfide, $C{u_2}S$. Chalcocite is another name for it.
The most important copper ore is copper-glance. It is a secondary sulfide generated from chalcopyrite found at greater depths, and it normally occurs in the top part of copper bearing lodes; nevertheless, the two minerals can sometimes be found together in the same area of the lodes.
So, we can conclude that copper glance is not an oxide ore. It is a sulfide ore.

Note:
Other minerals, such as malachite, covellite, melaconite, and chalcopyrite, readily modify copper-glance. It is found as pseudomorphs after chalcopyrite, galena, and organic structures like wood; copper-glance pseudomorphs after galena preserves the original mineral's cleavage and is known as harrisite.