河南槐树坪矿区M_(1-Ⅰ)~#金矿体特征及地质意义
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摘要
通过对槐树坪矿区坑探工程内缓倾斜金矿体(M_(1-Ⅰ)~#矿体)的详细观察研究,发现矿体在形成后受到了后期构造运动的破坏,矿体的形态特征表现为:(1)矿体在剖面上一般呈舒缓波状的薄脉状,且被多条小型断裂错断,虽然断距较小,但是破坏了矿体在走向、倾向上的连续性;(2)黄铁矿化是与金矿体密切相关的金属矿化,硅化和钾化则是与金矿体关系密切且强度较高的主要蚀变类型;(3)金矿体表现为相对低阻高激化特征,与之密切相伴的石英脉则表现为高阻低极化特征。在上述分析的基础上,进一步研究认为:利用金矿体及石英脉显著的电阻率、极化率特征差异寻找隐伏矿体,并在矿体开发利用过程中追踪被错断的矿体,势必能够大幅提高找矿效果。
Through the detailed observation and study of the gently dipping gold orebody( M_(1-Ⅰ)~# orebody) in the pit excavation project in Huaishuping mining area in Henan Province,it is found that the orebody is damaged by the tectonic movement after the formation,its morphological characteristics can be summarized as following:(1)in the orebody profile,the orebody is distributed as generally slow-waved thin veins,it is broken by several small faults,although the fault interval is small,the continuity of gold orebody in the strike and inclination is destroyed;(2) pyrite mineralization is a metal mineralization that is closely related to gold orebody in mineralization alteration,silicification and potassiumization are the main alteration alternation types that are closely related to gold orebody and high in intensity;(3)the gold orebody is characterized by relatively low resistivity and high intensification in physical properties,while quartz veins closely accompanying them show the characteristics of high resistivity and low intensification.Based on the above discussion results,the further study resutls show that the prospecting effects can be improved by utilizing the significant difference between the resistivity and polarizability of gold orebody and quartz vein to find the hidden orebody and tracing the faulty orebody in the process of development and utilization.
Through the detailed observation and study of the gently dipping gold orebody( M_(1-Ⅰ)~# orebody) in the pit excavation project in Huaishuping mining area in Henan Province,it is found that the orebody is damaged by the tectonic movement after the formation,its morphological characteristics can be summarized as following:(1)in the orebody profile,the orebody is distributed as generally slow-waved thin veins,it is broken by several small faults,although the fault interval is small,the continuity of gold orebody in the strike and inclination is destroyed;(2) pyrite mineralization is a metal mineralization that is closely related to gold orebody in mineralization alteration,silicification and potassiumization are the main alteration alternation types that are closely related to gold orebody and high in intensity;(3)the gold orebody is characterized by relatively low resistivity and high intensification in physical properties,while quartz veins closely accompanying them show the characteristics of high resistivity and low intensification.Based on the above discussion results,the further study resutls show that the prospecting effects can be improved by utilizing the significant difference between the resistivity and polarizability of gold orebody and quartz vein to find the hidden orebody and tracing the faulty orebody in the process of development and utilization.
引文
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[9]方贵聪,陈郑辉,陈毓川,等.石英脉型钨矿原生晕特征及深部成矿定位预测——以赣南淘锡坑钨矿11号脉为例[J].大地构造与成矿学,2012,36(3):406-412.
[10]刘新会,陈彩华,赵天心,等.西秦岭寨上金矿原生晕地球化学特征及成矿预测[J].黄金科学技术,2012(4):7-15.
[2]白德胜,杨怀辉,聂建民.河南槐树坪矿区缓倾斜金矿体特征及找矿方向[J].黄金科学技术,2017(1):18-26.
[3]王炯辉,陈良,苏蔷薇,等.河南省嵩县槐树坪金矿床地质、同位素地球化学特征与成矿作用[J].矿床地质,2016(3):524-538.
[4]张参辉,庞绪成,梅修杰,等.河南省槐树坪金矿土壤地球化学分带模式研究[J].长春工程学院学报(自然科学版),2013(3):57-60.
[5]徐红伟,杨九鼎,王国库.河南省嵩县槐树坪金矿成矿地质特征及成因分析[J].河南理工大学学报(自然科学版),2009(6):719-726.
[6]王长明,邓军,张寿庭,等.河南雈香洼金矿原生晕地球化学特征和深部找矿预测[J].地质与勘探,2007(1):58-63.
[7]孙华山,孙林,曹新志,等.胶西北上庄金矿床原生晕轴(垂)向分带特征及深部矿体预测的勘查地球化学标志[J].矿床地质,2008(1):64-70.
[8]章永梅,顾雪祥,程文斌,等.内蒙古柳坝沟金矿床原生晕地球化学特征及深部成矿远景评价[J].地学前缘,2010,17(2):209-221.
[9]方贵聪,陈郑辉,陈毓川,等.石英脉型钨矿原生晕特征及深部成矿定位预测——以赣南淘锡坑钨矿11号脉为例[J].大地构造与成矿学,2012,36(3):406-412.
[10]刘新会,陈彩华,赵天心,等.西秦岭寨上金矿原生晕地球化学特征及成矿预测[J].黄金科学技术,2012(4):7-15.