Explanation
Island structure silicate mineral. Cylindrical crystal with parallel cylinder stripes on the cylinder surface. The polycrystalline twin is formed according to (100). Yellow green, green brown. The Fe3+content increases and the color darkens to a dark green color. When the ingredient contains manganese, the color appears pink. glass lustre. Parallel {O1l} sets of complete cleavage. Mohs hardness 6, produced in skarn. It coexists with albite and actinolite in green schist. It is often the product of wall rock alteration of various igneous rocks, especially basic rock. Those with beautiful color can be used as precious jade.
Classification
Natural materials and products -> Mineral materials