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A natural copper block that looks like a Tibetan Mastiff fell asleep for 260 million years and was recently unearthed at the barley basalt quarry in Ciying Township, Qilin District, Qujing City. At present, this natural copper block with a length of 190 cm, a width of 150 cm and a net weight of 900 kg has been approved by the World Record Association.
According to Zhao Chengqiao, the owner of the natural copper block, they accidentally dug this "kist stone" during the mining of the barley basalt quarry in Qilin District, Qujing City. Subsequently, the local government organized relevant experts to carry out laboratory tests on this Kistler. Shen Quan, a senior engineer of the First Geological Brigade of the Yunnan Bureau of Geology and Mineral Resources, said that the number of generations of this gemstone has exceeded 260 million years. The Geological Department of the Yunnan Provincial Department of Land and Resources said that such giant copper blocks are rare in China and the world, and belong to copper minerals with historical value and collection value. Subsequently, Zhao Chengqiao submitted a declaration to the World Record Association. After the detailed identification of the association, he obtained the title of “the world's largest natural record of natural copper in Tibetan Mastiff†and issued a certificate not long ago.
Inadvertently excavating the world's largest natural copper block, Zhao Chengqiao said it was very unexpected. The biggest wish of the moment is to hope that this world-class giant copper block representing Yunnan or China will be recognized and recognized at the national level, and that it is satisfied with the collection or other value.
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