图  1  相山铀矿田区域地质与铀矿床分布图^[7]

1—白垩系砂砾岩；2—上侏罗统中酸性火山岩；3—次花岗斑岩；4—燕山期花岗岩；5—华力西期花岗岩；6—加里东期花岗岩；7—铀矿床；8—上三叠统砂岩；9—中元古界变质岩；10—远古宇（未分）变质岩；11—断裂；12—推测深大断裂；13—火山颈（推测）；14—研究区

Figure  1.  The regional geology and uranium deposit distribution of the Xiangshan ore-field

图  2  沙洲矿床地质构造与矿化示意图^[3]

1—凝灰岩及流纹英安岩；2—碎斑熔岩；3—推覆体变质岩；4—基底变质岩；5—花岗岩；6—断裂构造；7—火山环状断裂；8—钻孔见矿范围；9—矿体

Figure  2.  A map showing the geological structure and mineralization of Shazhou deposit

图  3  沙洲矿床8号勘探线剖面图和含矿裂隙图

Figure  3.  Maps showing the profile of No.8 prospecting line and the ore-bearing fractures

图  4  沙洲矿床-58 m中段蚀变剖面素描图

1—次花岗斑岩；2—钠长石化；3—铀-赤铁矿化；4—铀-萤石化；5—绿泥石化；6—推测蚀变渐变界限；7—取样位置及编号

Figure  4.  A sketch map of the alteration profile in the -58 m layer of Shazhou deposit

图  5  沙洲矿床从矿石到围岩主量元素含量变化

Figure  5.  Content changes of the major elements from ore to wall rock in Shahzhou deposit

图  6  沙洲矿床从矿石到围岩微量元素含量的变化

Figure  6.  Content changes of the trace elements from ore to wall rock in Shazhou deposit

图  7  沙洲矿床花岗斑岩的稀土图谱和微量元素蛛网图^[14~15]

Figure  7.  Chondrite-normalized REE distribution patterns and primitive mantle normalized multi-element patterns of the granite porphyry in Shazhou deposit

图  8  沙洲矿床微量元素R型聚类分析谱系图

Figure  8.  Hierarchical diagram of R-type cluster analysis of the trace elements in Shazhou deposit