Purple stone to the development of the history of doctrine

Zijin stone Tangxing Song decline gradually submerged, and seek in the ages to find stone without. In recent years, this submerged thousands of years of stone in Qingzhou area 38 km south of the Linqu three sheep Village, produced in the village of West the Dairo Hill and Erlangshan summit, the need to dig 6-10 m, the party see the the Zijin stone crop, distribution less intensive, but the situation of the nest of a nest, possession of less. Huainan City, Anhui Province, Western Palgongsan this also distributed. Zijin stone delicate moist, moderate hardness, colorful (in the Zijin stone found in the red, yellow, purple, blue, ocher, black, can be divided into Zijin, red caviar, pale blue, gold belt, purple belt, flower grouper, crab green, gold, jade, black jade, sunspots, etc. as much as eleven kinds), texture clear, pure and free of impurities; its constituent calcite 90%, 5% dolomite, quartz, 3%, 2% of the argillaceous iron Mohs hardness of 3-6.

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