Question

In copper pyrites , what is the value of x?

Answer 1

Hint: Copper pyrite is a mineral that crystallizes in a tetragonal structure of copper iron sulfide. It's got the chemical formula. It's brassy to gold-yellow and has a Mohs scale hardness of 3.5 to 4. Copper pyrite tarnishes with various oxides , hydroxides, and sulphates when exposed to air.

Complete step by step solution:
It is a widely distributed yellow mineral consisting of a tetragon-colored sulphide of copper and iron. The formula is . The copper pyrite is a primary ore of copper called chalcopyrite. Therefore, the value of x will be 2.
Chalcopyrite is sometimes confused with pyrite and gold, all three of which have a shiny luster and a yellowish color. Hardness and string are important mineral properties that help in separating these minerals.
Chalcopyrite can be scratched with a knife and is much softer than pyrite, whereas pyrite cannot be scratched with a knife. Yet chalcopyrite is harder than gold, which can be scratched, if pure, by copper. The distinctive black line is made of Chalcopyrite and it includes green flecks. Pyrite has a black streak and gold has a streak of yellow. The Greek word "chalkos," which means copper and pyrites, means a striking fire, is the origin of the name of the chalcopyrite. Often it was known traditionally as "yellow copper"

Note: There is no solid solution sequence of natural chalcopyrite with any additional sulfide minerals. While chalcopyrite has the same crystal structure as sphalerite, Zn and Cu are limitedly substituted. While chalcopyrite doesn't contain the most copper compared to other minerals in its structure, it is the most valuable copper ore, as it is found in many areas.