Microcline feldspar
Microcline feldspar is a triclinic crystal structure ; composition: potassium aluminum silicate; hardness: 6; specific gravity: 2.56; refractive index: 1.52-1.53; birefringence: 0.008; gloss: Glassy to silky.
Microcline is a kind of alkaline feldspar, which is colorless, white, yellow, pink, red, gray, green or blue-green. The blue-green translucent variety is often used in jewelry and can be cut into cabochons of any size. The striking color is due to the presence of lead. The composition is the same as orthoclase , but the crystal structure belongs to the triclinic system.
Microcline distribution Amazonite The most important mineral sources are in India, as well as the United States, Canada, the former Soviet Union, Madagascar , Tanzania and Namibia .
Microcline feldspar cutting methods include round grain cutting, convex cutting and relief cutting.
The identification of rough microcline feldspar can be distinguished from similar minerals based on the geological occurrence, crystal shape and hardness of the ore. Indoor materials can be distinguished from specific gravity, hardness, refractive index, absorption spectrum, inclusion characteristics, etc. For finished products, relevant data should be measured without damaging the integrity of the finished product to distinguish them from similar gemstones.
