The origin of black sand

Black sand is extracted from copper ore, and then ore dressing has become a high-quality copper ore with fine quality. The types of copper ore are mainly two kinds of black copper sand and white quartz sand.

Its color is black and bright, the shape is angular, hardness is 6-7 Mohs hardness, [specifications] 10-20 mesh 20-40 mesh 40-60 mesh.