Current location - Education and Training Encyclopedia - Graduation thesis - Who can introduce the relevant information of Hunan Xianghualing Sn-Be Mine?
Who can introduce the relevant information of Hunan Xianghualing Sn-Be Mine?
Rare mineral in the world-hsianghualite

Xianghuashi Xianghuashi chemical formula Ca3Li2(BeSiO4)F4 is the first new mineral discovered by geologists in China, named after Xianghualing, Hunan, where it was discovered. Xianghualing, China, a unique giant panda similar to animals, is known as the "national treasure"; The discovery of hsianghualite is an important milestone in the history of geology and mineralogy in China! Xianghuayan contains rare and precious metals such as lithium and beryllium, and occurs in the green-white striped rocks containing beryllium in the contact zone between Devonian limestone and granite in Hunan. Hsianghualite crystal occurs in biotite veins in white striped rocks and coexists with lithium beryllium (another unique new mineral in the world in Xianghualing, Hunan), Tafeishi, Nigerian stone, emerald and fluorite. Hsianghualite belongs to equiaxed crystal system, and its crystal structure is quite special. The crystal morphology of hsianghualite is pentagonal and tetrahedral, and the crystal is granular, which has two habits; Hsianghualite crystals are fine crystals, and crystals with a diameter greater than 5 mm are large crystals. The largest known crystal is12mm in diameter, which is now hidden in geological museum, China. Although the crystal is small, its natural crystal plane can reach 146. Physical properties: colorless, milky white, light yellow; Transparent or opaque; Glass luster; Hardness 6-7; Density 3; Fragile; Under the polarizer: colorless, transparent and homogeneous: The cause of hsianghualite is very complicated, and it is still a mystery. It only exists on the surface of Xianghualing hundreds of square meters. Because this area is associated with non-ferrous metals such as tungsten and tin, this area has been completely destroyed by individual illegal mining in the past decade, and hsianghualite, the national treasure, is on the verge of extinction! Sincerely, Xuan Shi takes this opportunity to appeal to people of insight and love of stone in the world to save the national treasure-hsianghualite!