quarrying business

Brief introduction
Today the new mining Lantian jade deposit in Lantian County, Sichuan, jade Red Star area, about 35 kilometers from the county seat, ore-bearing strata for the Archean black mica schist, gneiss, amphibolite. The jade is a fine marble, is mainly composed of calcite. According to the mineral composition and the characteristic appearance of jade can be divided into five kinds: the first kind is white marble.China National stone Second kinds of shallow rice yellow serpentine marble. Third yellow serpentine marble. Fourth for the apple color serpentine marble. Fifth banded tremolite Petrochemical serpentine.
Chemical composition

According to the research, without any treatment of the new Lantian jade stone containing SiO2 23.86%, TiO2 0.10%, Al2O3 0.55%, Cr2O3 0.0004%, Fe2O3 0.38%, FeO 0.55%, MnO 0.015%, MgO 19.34%, CaO 29.09%, Na2O 0.085%, P2O5 0.02%, H2O 5.04%, CO2 21.35%, etc.. X ray diffraction analysis shows that, the mineral composition mainly calcite ( 50.75%), serpentine leaf (49.25% ), the other containing a small amount of talc. Jade white, beige, yellow green, apple green, green and white color, display glass gloss, greasy luster,material quality transparent to translucent. A massive, banded, spot flower, dense texture of toughness. Hardness of 3-4, density of approximately 2.7 g / cm 3. Some varieties in acid can bubble.

Arts and crafts requirement Lantian jade color bright beautiful or elegant, strong luster, transparency is high, serpentine minerals distribution. Dense texture, delicate, tough, bright and clean, no cracks and other defects. Large block size.
Lantian jade is the ancient name of jade, early in the Qin Dynasty that quarrying business writing, is famous for the moon. The Tang Dynasty and before many books are produced in Lantian jade records.

According to the record, the Tang emperor had ordered them to take Lantian jade makes for Yang Guifei bell ( a percussion instrument ). The" Han geography", said Guo produced in the " Beijing (now mount Lantian Xi'an north)". Thereafter," after the Han Chuan"," Zhang Heng"," Xijing Fu Ya"," waterways" and the" Yuan-chi and counties map" and other books. To the Ming Wanli, Song Yingxing in the" Heavenly Creations" said:" the so-called Lantian, i.e. a jade Cong ( Kunlun Mountains ) alias, and then mistakenly thought the Lantian xi'an."

Lantian jade jade, black jade, jade, topaz, white marble, much as the clear color multicolor jade, color, pattern. According to recent survey,jewelry factory Lantian jade reserves of 1000000 cubic meters, mainly in jade plain countryside and red temple village. The local folk Jade 's past are artificial jade processing, in recent years to start using mechanical Quarrying processing, production of a wide variety of decorations and crafts. Such as, Yu Yan cup, jade bracelet, fitness ball. Many jade items showing the natural landscape image, is high quality and inexpensive crafts.