No.3 Mine Crater
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      It is one of the known biggest and most typical gratine dike with rare metal in the world. There are more than 80 kinds of mines, mainly included Li, Be, Ta, Nb, Rb, Cs, Co, U and many other rare metals, among which, the Be ranks the first around the whole world, and Ta, Nb, Cs and Li rank the third. It was always famous at home and abroad as the "Geology Minerals Museum" and made great contributions to our successful lauch of atom bomb, h-bomb and manmade satellites and also the building up of national defense. It is described as "Hero Minerals" and "meritorious Minerals".