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图 1 福建福安赤路矿区地质略图(据福建省地质四队四〇三分队,1976修改)
1—南园组流纹质晶屑凝灰熔岩及流纹质角砾凝灰熔岩;2—微细粒似斑状花岗岩;3—正长斑岩;4—辉绿玢岩;5—钼矿体;6—云英岩化带与绢英岩化带分界线;7—钾长石化与云英岩化带界线;8—绢英岩化带与青盘岩化带分界线
Figure 1. Geological sketch of the Chilu mining area in Fu'an(revised from Fujian Provincial Geological Team 403 Division, 1976)
1–rhyolitic crystal lapilli tuff and rhyolitic brecciated lapilli tuff of the Nanyuan Group; 2–fine-grained porphyritic granite; 3–syenite porphyry; 4–diabase; 5–molybdenum ore body; 6–boundary between greisenization zone and sericite alteration zone; 7–boundary between potassic alteration zone and greisenization zone; 8–boundary between sericite alteration zone and propylitization zone
图 2 福建福安赤路矿区8线地质剖面图(据福建省地质四队四〇三分队,1976改编)
1—南园组;2—花岗岩;3—正长斑岩;4—钼矿体;5—钾长石化;6—云英岩化;7—绢英岩化;8—硅化;9—绢云母化;10—绿帘石化;11—绿泥石化;12—钻孔
Figure 2. Geological profile of Line 8 in the Chilu mining area in Fu'an(revised from the Fujian Provincial Geological Team 403 Division, 1976)
1–Nanyuan Group; 2–granite; 3–syenite porphyry; 4–molybdenum ore body; 5–potassic alteration; 6–greisenization; 7–silication and sericitization; 8–silicification; 9–sericitization; 10–epidotization; 11–chloritization; 12–drill hole
图 3 赤路钼矿床成矿模式
1—上侏罗统南园组第三段(J3nc)流纹质晶屑凝灰熔岩和流纹质角砾熔岩;2—中细粒似斑状花岗岩;3—二长花岗岩;4—钾长花岗岩;5—接触面及其以上陡倾斜矿体;6—接触面及其以下平行接触面的缓倾斜矿体;7—1号矿体;8—101号矿体;9—第一期岩浆动力作用;10—第二期岩浆动力作用;11—同源二期岩浆动力作用方式、方向;12—不同花岗岩之间的界线
Figure 3. Metallogenic Model of the Chilu Molybdenum Deposit
1–rhyolitic crystalline tuff lava and rhyolitic breccia lava (J3nc) from the third member of the Nanyuan Group of the Upper Jurassic; 2–medium to fine grained porphyritic granite; 3–monzogranite; 4–orthogonal granite; 5–steep inclined ore bodies at and above the contact surface; 6–gently inclined ore bodies with parallel contact surfaces at and below the contact surface; 7–No.1 ore body; 8–No.101 ore body; 9–the first stage of magmatic dynamic process; 10–the second stage of magmatic dynamic process; 11–the mode and direction of the second stage of magmatic dynamic process from the same source; 12–the boundary between different granites
表 1 赤路钼矿床主要控矿构造特征表
Table 1. Main ore-controlling structural characteristics of the Chilu molybdenum deposit
位置 构造特征 力学性质 产状 与接触面关系 与岩浆上冲力方向关系 接触面以上 张性或张剪性 NNW/SWW∠70°± 垂直或近垂直 平行或近平行(NNW/SWW∠70°±) 接触面 压性或压剪性 NEE/SSE∠20°± 同一 垂直或近垂直 接触面以下 压性或压剪性 NEE/SSE∠20°± 平行或近平行 垂直或近垂直 表 2 岩浆动力成因构造控矿主要类型及其特征表
Table 2. The main types and characteristics of structures associated with intrusion and mineralization
特征 主要类型 直立树枝状−
对称弧形倾斜平行−
不对称弧形陡倾斜平行−
缓倾斜平行弧形平行 倾向相向平行夹X
形−弧形平行形态 直立树枝状石英脉型钨矿 倾斜平行石英脉型钨矿 陡倾斜石英脉型钼矿平行分布 弧形石英脉型、硅化脉带型钼矿层(体)叠层平行分布 两侧倾向相向平行中间夹X形石英脉型钨矿 产状 平行或近平行接触面矽卡岩型、砂岩细脉型钨矿层(体) 矽卡岩型钨矿
平行或近平行接触面分布结构面 接触面 接触面 接触面 (隐形)接触面 接触面 类型 伟晶岩型、云英岩型矿体(层)平行叠层分布 云英岩型矿层(体)平行接触面分布 缓倾斜云英岩层(体)平行接触面及以下平行分布 ? 与接触面平行云英岩型、细脉浸染型、浸染型钨矿层(体)叠层平行分布 典型矿床 湖南瑶岗仙钨(钼)矿床(李顺庭,2011)等 江西徐山钨矿床(王显华和龙细文,2010)等 福建赤路钼矿床(福建省地质四队四〇三分队,1976)等 福建古田西朝钼矿床(石礼炎,2009)等 江西茅坪钨锡矿床(王定生等,2011)等 -
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