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地质论评  2012 

桂东北豆乍山产铀花岗岩的铀源矿物研究

Keywords: 豆乍山花岗岩,铀源,蚀变,独居石,磷钇矿

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Abstract:

豆乍山花岗岩是桂东北重要的产铀花岗岩之一,通过精细矿物学研究,豆乍山花岗岩中绿泥石主要为铁绿泥石和辉绿泥石,而含铀副矿物的蚀变和形成温度相对较高的铁绿泥石密切相关。花岗岩中主要富铀副矿物为晶质铀矿、锆石、独居石、磷钇矿和铀钍石,其中晶质铀矿是公认铀源矿物,而其他副矿物的赋存状态及蚀变特征决定了其是否为铀源矿物。锆石多未发生蚀变,U仍保持其结构中,因此不是铀源矿物;而铁绿泥石附近的独居石和磷钇矿均发生不同程度的蚀变,蚀变作用不仅使独居石和磷钇矿结构中的U得以释放进入热液,而且原磷钇矿包裹的铀钍石变为赋存于次生磷灰石中,其所含铀容易活化而成为铀源矿物。总之,在豆乍山产铀花岗岩含铀副矿物中,晶质铀矿、蚀变的独居石和磷钇矿、次生磷灰石中铀钍石是铀源矿物。

References

[1]  冯明月,华南产铀岩体的副矿物特征,放射性地质,1984(1).
[2]  刘光案;周运?;李义尧;陈岳龙,桃山产铀复式岩体不同时代花岗岩中晶质铀矿分布特征和成因探讨,华东地质学院学报,1984(2).
[3]  刘继顺;章邦桐,构造蚀变作用与铀成矿,大地构造与成矿学,1989(2).
[4]  章邦桐,花岗岩物理化学及铀成矿作用,北京:原子能出版社,1992.
[5]  张成江,贵东岩体花岗岩中晶质铀矿的特征及其找矿意义,成都地质学院学报,1990(3).
[6]  张成江,华南几个杂岩体中产铀与非产铀花岗岩的成因及其与铀成矿关系,成都理工学院学报,1996(4).
[7]  Cathelineau M,Cation site occupancy in chlorites and illite as a function of tempcraturc,Clay Minerals,1988(4).
[8]  Chabiron A;Cuney M,Allanite alteration in the granites under the Streltsovka caldera(Transbaikalia,Russia).A possible uranium source for the deposits,Earth and Planetary Science Letters,2001(2).
[9]  Chabiron A;Cuney M;Poty B,Possible uranium sources for the largest uranium district associated with volcanism:the Streltsovka caldera(Transbaikalia,Russia),Mineral Deposits,2003(2).
[10]  Michel Cuney,The extreme diversity of uranium deposits,Mineralium deposita?,2009, 44(1).
[11]  Cuney M;Friedrich M,Physicochemical and crystal―chemical controls on accessory mineral paragenesis in granitoids:implications for uranium metallogenesis,Bull Min l,1987.
[12]  Cuney M;Kyser K,Deposits related to magmatic differentiation,2008.
[13]  Foster M D,Interpretation of the composition of trioctahedral micas,U S Geol Survery Prof Paper,1960(B).
[14]  F(o)rster H J,The chemical composition of REE-Y-Th-U-rich accessory minerals in peraluminous granites of the Erzgebirge-Fichtelgebirge region,Germany,Part I:The monazite-(Ce)-brabantite solid solution series,American Mineralogist,1998(3).
[15]  F(o)rster H J,The chemical composition of REE―Y―Th―U-rich accessory minerals from peraluminous granites of the Erzgebirge Fichtelgebirge region,Germany.Part Ⅱ:xenotime,American Mineralogist,1998(10).
[16]  F(o)rster H J,Composition and origin of intermediate solid solutions in the system thorite xenotime-zircon- coffinite,Lithos,2006(1).
[17]  Gao Shan ;Luo Tingchuan ;Zhang Benren,Structure and composition of the continental crust in East China,Science in China. Series D, Earth sciences?,1999, 42(2).
[18]  Geisler T;Schleicher H,Improved U Th total Pb dating of zircons by electron microprobe using a simple new background modeling procedure and Ca as a chemical criterion of fluid-induced U-Th-Pb discordance in zircon,Chemical Geology,2000(2).
[19]  T. Geisler ;A. A. Rashwan ;M. K. W. Rahn,Low-temperature hydrothermal alteration of natural metamict zircons from the Eastern Desert, Egypt,Mineralogical Magazine?,2003, 67(3).
[20]  Hecht L;Cuney M,Hydrothermal alteration of monazite in the Precambrian crystalline basement of the Athabasca Basin(Saskatchewan,Canada):implications for the formation of unconformity-related uranium deposits,Mineral Deposits,2000(8).
[21]  Hey M H,A new review of the chlorites,Mineralogical Magezine,1954(2).
[22]  RUI-ZHONG Hu ;XIAN-WUBI ;MEI-FU ZHOU,Uranium Metallogenesis in South China and Its Relationship to Crustal Extension during the Cretaceous to Tertiary,Economic geology?,2008, 103(3).
[23]  Nasdala L;Hanchar J M;Rhede D;Kennedy A K Váczi T,Retention of uranium in complexly altered zircon:An example from Bancroft,Ontario,Chemical Geology,2010(3).
[24]  杜乐天,我国热液铀矿床分类及其成因分析,放射性地质,1980(3).
[25]  杜乐天,花岗岩型铀矿文集,北京:原子能出版社,1982.
[26]  方适宜;范立亭;朱康任;舒孝敬 欧阳平宁 肖建军.孟公界花岗岩型脉状铀矿床成矿构造研究及找矿预测[J].铀矿地质,2007(3)doi:10.3969/j.issn.1000-0658.2007.03.002
[27]  戎嘉树,花岗岩中晶质铀矿及其找矿意义,东华理工学院学报,1980(2).
[28]  孙志富,某花岗岩中分散晶质铀矿成因及其成矿意义,铀矿地质,1981(2).
[29]  石少华;胡瑞忠;温汉捷;孙如良 王加异 陈恒.桂北沙子江铀矿床成矿年代学研究:沥青铀矿U-Pb同位素年龄及其地质意义[J].地质学报,2010(8)
[30]  谢红接;李剑锋;刘德;赵英俊 黄树桃 冯杰.高光谱数据处理及其在广西苗儿山地区的地质应用研究[J].铀矿地质,1999(1)doi:10.3969/j.issn.1000-0658.1999.01.008
[31]  谢晓华;陈卫锋;赵葵东;孙涛,陈培荣,蒋少涌,朱康任,李妩巍.桂东北豆乍山花岗岩年代学与地球化学特征[J].岩石学报,2008(6)
[32]  余达淦;吴仁贵;陈培荣,铀资源地质学教程,哈尔滨:哈尔滨工程大学出版社,2005.

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