supply quartz

Low-temperature quartz appearing with steeple of the six-party columnar crystals outputs, a cylindrical stripes and similar to the six-party-ubiquitous steeple, in fact, consist of two single rhombohedral-shaped body formed. Quartz is usually granular aggregates, massive or DRUSE, crystal and other glands. Pure transparent colorless quartz, glass, shiny, magma fracture, with the oil sheen, no cleavage, Moldova's hardness of 7, the proportion of 2.65. Pressure or heat can produce electric effect.