How can mica be identified in river sand?
The most common mineral types in mica group minerals are biotite, muscovite, mica, mica, sericite and so on. Mica is usually a pseudo six or rhombic plate, flake, and columnar crystalline form
Vary color with chemical composition, mainly with the content of Fe increased and became darker. Muscovite colorless transparent or light, but often dyed green, brown, yellow and pink and other colors; black mica is black to dark brown, dark green color; Jin Yun mother yellow, brown, green or colorless glass. Glass luster, cleavage is pearl or semi metallic luster; lithium mica pale purple, rose red to grey.
