albite

1. Characteristics and chemical components:
The hardness of feldspar fluctuates at 6-6.5, and its specific gravity fluctuates at 2-2.5. It is brittle, has high compressive strength and has strong chemical stability to acids. The color of potash feldspar is mostly flesh red and gray and white brown. Albite is white, gray and light yellow, and the feldspar is white or light gray. Chemical composition SiO2 Al2O3 Fe2O3 K2O Na2O other content 70.12, 15.84, 0.09, 9.55 2.65 trace.
Two, use: making potash fertilizer, making ceramic and enamel, glass raw material, abrasive abrasive tools and so on.
Chemical composition: Feldspar powder 40-80 more than 80-120120 orders of SiO2:67% Al2O3:16% P+S>0.05, K2O+Na2O>13% (up to 18%), K2O, Na2O is not active, is Na, K metal active.
The basic structural unit of feldspar is tetrahedron. It consists of 4 oxygen atoms surrounded by a silicon atom or aluminum atom. Each tetrahedron shares an oxygen atom with another tetrahedron, forming a three-dimensional skeleton. The large radius of alkali or alkaline earth metal cations is located in the large gap within the skeleton, and the coordination number is 8 (in the monoclinic feldspar) or 9 (in the three diagonal feldspar). Feldspar crystals are mostly columnar or columnar along a crystalline axis. Twinning is very common. There are more than 20 kinds of twin crystals. Common are sodium long stone law, the law of man's law, Bawinno's law, and the double crystal of Xiao Na Chang Shi law. They are found in three oblique crystals or monoclinic and three oblique crystals respectively. Feldspar is often milky white, but it is often dyed with yellow, brown, light red, dark grey and so on. Some can also have beautiful color change or color. There are two groups of cleavage, with an angle of 90 degrees (monoclinic) or near 90 degrees (87 degrees) (three diagonal system). The proportion between 2.56 and 2.76 increased with the increase of An content and decreased with the increase of Or. The moth hardness is 6 ~ 6.5. The feldspar rich in potassium or sodium is mainly used in the ceramic industry, the glass industry and the enamel industry. The feldspar containing rare elements such as rubidium and cesium can be used as a mineral material for the extraction of these elements, and the beautiful feldspar of color can be used as a decorative stone and a secondary gem.
The most common mineral in the earth's crust is feldspar, which is also found on the moon and meteorites. Within the depth of 15 km underground, feldspar accounts for 60% of the total crustal weight. Feldspar is the main constituent of igneous rock, and is also common in metamorphic rocks and sedimentary rocks. Feldspar is a kind of aluminosilicate mineral containing calcium, sodium and potassium. It has many kinds, such as albite, calcite, barium feldspar, barium feldspar, micro plagioclase, ortho feldspar, and feldspar. They all have glassy luster, various colors, colorless, white, yellow, pink, green, gray, black and so on. Some are transparent and some are translucent. Feldspar itself should be colorless and transparent. It is colored or not completely transparent because it contains other impurities.