Quartz stone mainly refers to low-temperature quartz (α-quartz), which is widely distributed. When the temperature is above 573 ° C, it becomes a high-temperature quartz (β-quartz) of the hexagonal crystal. Low -temperature quartz crystals are often spoiled in six -square column. There are horizontal lines on the column surface, there is a difference between left -shaped crystal and right -shaped crystal. Double crystals are common, common ones Daofen dual crystal and Brazilian dual crystals.

Physical nature

Crystal: Sixfang Crystal Series

Crystal: equivalent, columnar, and six -way double cone surface shape

Collection body type: block, coarse granular, bell -like,

Hardness: Mo's hardness is 7

Law/Fracture: Shell -shaped Fracture

Gloss: glass luster

Color: none, white, with a little gray, yellow to orange, purple, dark purple, pink, gray -brown, brown, black

Bar marks: white

Percent: 2.65 ~ 2.66

Others: (1) Crispyness;

(2) It has thermal power;

(3) The refractive index is 1.533 ~ 1.541, the dual refractive rate difference is 0.009, and the color scattered 0.013;

(4) Quartz has a strong piezoelectric property, that is, it will produce sparks when knocking hard, which is the method of lockstone to get fire;

(5) The commonly common parcels in quartz are: haircrystal -mainly gold erythells; grass into the crystal -mainly electrical stones; water biliary crystals -liquid parcels in the quartz; blue quartz -inside containing light blue golden stone Consolidation; Lactinch -caused by turbidity caused by fine water; green quartz -composed of plate or fragmented green mud stones, sometimes it may be green needle -shaped stones; It contains green or reddish -brown Yunmu fine films, also known as Yae Jersey, commonly known as Dongling Stone. The common smoke to dark brown smoke crystals, mainly these rocks contain a large amount of relationship with radioactive uranium and 钍 elements.