Explanation
Coordination type oxide minerals. The chemical formula is (Mg, Fe) Cr2O4, a homogeneous mixture containing Mn, Ti, V, and Zn. Equiaxed crystal system. Ortho spinel structure. Mostly present as granular aggregates. Black, brown black. Striped brown to light brown, semi metallic luster, without cleavage, sometimes parallel cracks can be seen.
Classification
Natural materials and products -> Mineral materials