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古老的齐鲁大地,山川钟秀,物华天宝,盛产宝石,堪称“宝石之乡”。迄今已发现宝石十几种,主要有:金刚石(又称钻石)、蓝宝石、红宝石、黄色蓝宝石、石榴石、锆石、尖晶石、钛辉石、绿柱石、电气石及紫水晶等。1965年在山东省发现的金刚石原生矿,填补了我国金刚石原生矿的空白。之后,经地质部门普查、勘探,翌年又发现了西答矿及坡里金伯利岩带。金刚石:为山东省优势矿产资源之一,其储量和产量均居全国第二位。金刚石有原生矿及砂矿。金刚石原生矿主要分布在蒙阴县境内,砂矿分布在郯城、临沭以及沂、沐河中上游流域。金刚石的母岩为金伯利岩(译地名称),岩石学叫角砾云母橄榄岩。在晚白垩世(距
The ancient Qilu earth, mountains and clock Xiu Xiu, Wuhua Tianbao, rich in gems, called “hometown of gems.” Has so far found a dozen gems, there are: diamond (also known as diamond), sapphire, ruby, yellow sapphire, garnet, zircon, spinel, titaniferite, beryl, tourmaline and amethyst. The primary diamonds discovered in Shandong Province in 1965 filled the blank of primary diamonds in China. Later, after geological survey and exploration, the Xizang Mine and the Kimberley Rock Belt were discovered the following year. Diamond: Shandong Province is one of the advantages of mineral resources, its reserves and production rank second in the country. Diamonds have primary ore and placer. The primary diamond mine is mainly located in the territory of Mengyin County. The sand deposits are distributed in Tancheng, Linshu and Yihe and Muhe upstream basins. The parent rock of diamond is kimberlite (pedestal), petrology is called boulder mica peridotite. In the Late Cretaceous (distance