Chalcopyrite crystals have unique physical and chemical properties. The following are their main characteristics:

1. Crystal structure

Crystal system: tetragonal system.

Common morphology: tetrahedron or pseudo-octahedron, crystals are usually small, sometimes in blocky or granular aggregates.

2. Physical properties

Color: brass color, often with rainbow-colored oxide film on the surface.

Luster: metallic luster.

Hardness: Mohs hardness 3.5-4.

Stripe: green-black.

Density: about 4.1-4.3 g/cm³.

3. Chemical properties

Composition: The chemical formula is CuFeS₂, containing copper, iron and sulfur.

Solubility: insoluble in water, soluble in nitric acid.

4. Formation and origin

Formation environment: common in hydrothermal deposits, skarn deposits and sedimentary rocks.

Distribution: widely distributed around the world, with major production areas including Chile, the United States, Peru, Australia and China.

5. Uses

Main sources of copper: Copper is extracted through smelting and used in electrical, construction and manufacturing industries.

Scientific research and education: Used in mineralogy research and geology teaching.

Decoration and collection: Some crystals are ornamental and used for decoration or collection.

Summary

Chalcopyrite crystals have a unique brass color and metallic luster. They are commonly found in hydrothermal deposits and skarn deposits. They are mainly used for copper extraction and are also used in scientific research, education and collection.

Article Title: Chalcopyrite crystal structure
Author:Xingaonai
Reprint URL: https://www.cadana.cn/industral-news/chalcopyrite-crystal-structure.html