秦岭铀资源研究

秦岭横亘中国中部，东西绵延１３００ｋｍ以上，地跨皖、鄂、豫、陕、甘、青、川等７省，面积达３０余万ｋｍ２，是我国著名的“中部金属成矿带”。迄今，该区已探明２０个工业铀矿床，其成矿类型可划分为花岗岩型、变质岩型和热液蚀变岩型３个大类和９个亚类，成矿具明显的规律性。秦岭地槽区内已发现１５个矿床，占矿床总数的７５％。主要铀矿床集中于陕南的丹商、陕中的蓝田、甘南的礼县境内。其中，花岗岩型铀矿床以其规模大、矿富、易于冶炼而名列前茅；沉积再造型铀矿床位居第二。铀成矿期以加里东期为主，燕山期次之。文中对秦岭地区铀矿床进行了预测，并指出北秦岭地区，西起党川、经佳木斯、葛牌、分水岭、东至龙泉坪一带，是今后查勘花岗岩型铀矿的最有利地域

INVISTIGATION ON URANIUM RESOURCES OF QINLING REGION

The Qinling Mountains straddle China from the west to the east with the length of more than 1300km covering Anhui, Hubai,Hunan,Shanxi,Gansu,Qinghai and Sichuan provinces.Up to now,20 uranium deposits have been discovered in the region and all discovered deposits can be classified into 3 types (granite type,sedimentation reworking type and hydrothermal alteration type) and 9 subtypes including 15 uranium deposits discovered in Qinling geosyncline area. Main uranium deposits are concentrated in Danfeng and Shangnan counties, southern Shanxi,lantian county, central Shanxi and Lixian County, Southern Gansu.Of the above listed uranium deposits, the granite hosted deposits are most important, and characterized by large resources, high grade of ore and easiness in hydrometallurgy.Sedimentation reworking type deposits are less important.The main U metallogenic epoch is the Caledonian and the Yanshanian is the second.A prognosis for uranium deposits in Qinling region is made in the paper which proposes that the belt from Dangchuan in the west,via Jiamusi,Gepai and Fenshuling to Longquanping in the east is a most favorable area for location granite type uranium deposits.