The color and hardness of hematite ore
Chalcopyrite is a kind of copper iron sulfide mineral. Brass yellow, often have blue, purple brown porphyritic tarnish surface. Green black streak. Metallic luster; opaque. No cleavage. Conductive [2]. Hardness 3~4. Sexual fragility. Relative density 4.1~4.3.
The chemical composition of hematite is Fe2O3, and crystal is an oxide mineral of six square system. Similar to that of equiaxed magnetic hematite. Crystals are usually plate-like; aggregates are usually flaky, scaly, kidney like, oolitic, blocky, or earthy. A reddish brown, steel gray to black color, streak are cherry red. Metallic to semi metallic luster. Moss hardness 5.5 ~ 6.5, specific gravity 4.9 ~ 5.3. It is iron black, metallic luster, flaky hematite called Specularite; a steel gray, metallic luster, scaly called mica hematite, Chinese called "cloud" iron; reddish brown earthy luster dim called ochre, Chinese called "Dai zhe", and to "" refers to the ochre hematite.
