The quartz is the most common mineral which alone formed by SiO2 in the nature, which includs two kinds of quartz, one is trigonal crystal low temperature quartz (α quartz) and hexad crystal high temperature quartz (β quartz). The common major part is the low temperature quartz, generally is called the quartz. Its assumes the shapes of rhombohedron, hexad direction columniation, double tripartite cone, the tripartite rhombic shape; which color is achromaticity, ivory-white, multi-colors if mixed in the impurity; Not cleaves, has the conchoidal fracture, the oily luster; hardness 7, density 2.65g/cm3. Its crystal common has solid, liquid and gas enwrap.
The quartz sand is one kind of minerals name, which including the many kinds. The hyaline-quartz is refers to the nature mineral or rock which ore ingredient and granularity conforms to the glass industry requested. In the ore mineral ingredient, the quartz is primary and the secondary mineral has each kind of feldspar,the rock debris, weightily mineral(pyrope, tourmaline, pyroxene, hornblende, fine stone, topaz, epidote, ilmenite and so on) as well as the mica, the green mudstone and the clay mineral and so on. The quartz placer may divide into the quartz sand, contain the feldspar clay quartz sand, contains ore type and so on feldspar quartz sand, general designation the mineral of sand; Thesilicarenite, the aposandstone and matrix quartz are called as the crag class ore.
