• 责任者：Xiong Xin (Key Laboratory of Metallogeny and Mineral Assessment ; MLR ; Institute of Mineral Resources ; CAGS ; Beijing 100037 ; China) ; Xu Wenyi
• 刊名：Mineral Deposits
• 出版年：2013
• 卷期：32(6)
• 关键词：铀矿 ; uranium ores ; 钍矿 ; thorium ores ; 安徽 ; Anhui Province
• 页码：p.1211-1220
• 图表：2 illus., 1 table, 49 refs.
• 分类号：1001
• issnNo：ISSN0258-7106
• isbnNo：CN11-1965/P

     Deep drilling program named SinoProbe-03-06 was conducted in Zhuanqiao area of Lujiang in Anhui Province. Thorium and uranium anomalies were found in the syenite from the deep drilling, which had reached marginal grade in some places. The authors investigated the thorium and thorium-bearing minerals and summa- rized the relationship between rock-forming minerals and accessory minerals by using microscope and electron mi- croprobe techniques. The results indicate that thorium and uranium have two modes of occurrence in the deposit, i.e., independent thorium minerals, and isomorphic form existing in uranium minerals or micro-isomorphic form lying in accessory minerals. Independent uranium and thorium minerals assume two forms, i.e., euhedral crystal wrapped in albite, often associated with zircon in space; fine particles dispersed in futile, apatite, anhy- drite and other hydrothermal alteration minerals. Alterations associated with uranium and thorium mineralization are albitization, tourmalinization, anhydritization and other high-temperature hydrothermal alterations. A series of features, such as uranium and thorium mineralization, uranium and thorium ratio, mode of occurrence and al-teration in deep drilling, are quite different from those of uranium deposits minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">（ore spotsminor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">） nearby. That difference might indicate a genetic link which suggests that uranium and thorium mineralization in deep drilling might re- veal high temperature type uranium deposits in the rock bodies in the depth of the basin.