湖北省地矿局鄂东北地质大队在大洪山地区进行金刚石地质找矿工作中,首次发现金刚石新源岩——钾镁煌斑岩。新发现的钾镁煌斑岩体地处扬子准地台北部边缘,北邻襄樊-广济深断裂。深断裂北部为秦岭地槽褶皱系,是老活动带,其地质环境与澳大利亚西部钾镁煌斑岩相似。岩体大都单 Hubei Province Bureau of Geology and Mineral Resources Hubei northeast geological brigade in the Dahongshan area diamond geological prospecting work, the first discovery of the new source rocks diamond - lamproite porphyry. The newly discovered potash-lamprophyre porphyry is located on the northern margin of the Yangtze Platform and is adjacent to the Xiangfan-Guangjiashen fault to the north. The north part of the deep fault is the Qinling geosynclinal fold system and is an old active zone with similar geological conditions to the lamproites of western Australia. Rock mass mostly single