河南汝阳竹园沟钼矿床的发现及其成因讨论
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摘要
河南汝阳竹园沟钼矿床是在东秦岭—大别山钼成矿带新发现的钼矿床,估算钼金属量9.59万t,平均品位0.10%,储量为中型。该钼矿是在燕山晚期侵入花岗岩体内找钼取得的新进展。竹园沟花岗岩为太山庙花岗岩体的一部分,具陆内造山作用后期拉张环境下A型花岗岩特征。矿体赋存于燕山晚期第三次侵入的正长花岗斑岩与第一次侵入的中粗粒正长花岗岩的内接触带,矿体呈似层状、透镜状产出,矿床类型为斑岩型钼矿床。在全面分析该区成矿地质条件、化探异常特征的基础上,以寻找斑岩型矿开展勘查工作,逐步认识、实践,最终取得了找矿突破。通过对矿床地质特征研究,总结了以下找矿关键部位:(1)燕山晚期花岗岩区内1∶5万Mo地球化学异常地段;(2)不同比例尺Mo元素地球化学异常重叠部位;(3)与区域NE向断裂方向一致,彼此大致平行的小型断裂构造带、裂隙发育带或密集带;(4)燕山晚期太山庙A型花岗岩内不同期次花岗岩侵入体内接触带附近;(5)从成因上看属于斑岩型钼矿床。竹园沟钼矿床的发现,为在东秦岭—大别山钼成矿带找矿提供了新的思路。
The Zhuyuangou molybdenum deposit was newly found in the East Qinling-Dabie Mountain metallogenic belt. It is estimated that the amount of molybdenum metal is 95.9 thousand ton,with the average grade being 0.10%,reaching medium-sized reserves. The discovery of this deposit is a new progress in the prospecting for molybdenum deposits in the inner part of the late Yanshanian granite mass.The Zhuyuangou granite mass is a part of the Taishanmiao granite batholite,and possesses the features of A-type granite characterized by later intracratonic orogenesis in an extensional environment.The orebody occurs in the inner contact zone of the third intrusive syenogranite-porphyry and the first intrusive medium-coarse syenogranite of late Yanshanian period. It exhibits stratoid or lenticular form,suggesting a porphyry molybdenum deposit. Through a comprehensive analysis of the metallogenic geological conditions and geochemical anomaly characteristics,the authors carried out prospecting work step by step and, through repeated understanding and practice, finally made the breakthrough. Based on geological characteristics of the molybdenum deposit,the authors summed up the following key prospecting positions:(1) area of molybdenum 1∶50000 geochemical anomaly in late Yanshanian granite mass;(2) superposition of different scales of Mo geochemical anomalies;(3)basically parallel small faulted structural zones and fissure-developed or crowded zones which are consistent with regional NEtrending fault;(4) around the inner contact zones of the different intrusive bodies of late Yanshanian Taishanmiao A-type granite;(5) Genetically, it belongs to porphyry molybdenum deposit. The discovery of this deposit provides new training of thought for the prospecting work in the East Qinling-Dabie Mountain metallogenic belt.
The Zhuyuangou molybdenum deposit was newly found in the East Qinling-Dabie Mountain metallogenic belt. It is estimated that the amount of molybdenum metal is 95.9 thousand ton,with the average grade being 0.10%,reaching medium-sized reserves. The discovery of this deposit is a new progress in the prospecting for molybdenum deposits in the inner part of the late Yanshanian granite mass.The Zhuyuangou granite mass is a part of the Taishanmiao granite batholite,and possesses the features of A-type granite characterized by later intracratonic orogenesis in an extensional environment.The orebody occurs in the inner contact zone of the third intrusive syenogranite-porphyry and the first intrusive medium-coarse syenogranite of late Yanshanian period. It exhibits stratoid or lenticular form,suggesting a porphyry molybdenum deposit. Through a comprehensive analysis of the metallogenic geological conditions and geochemical anomaly characteristics,the authors carried out prospecting work step by step and, through repeated understanding and practice, finally made the breakthrough. Based on geological characteristics of the molybdenum deposit,the authors summed up the following key prospecting positions:(1) area of molybdenum 1∶50000 geochemical anomaly in late Yanshanian granite mass;(2) superposition of different scales of Mo geochemical anomalies;(3)basically parallel small faulted structural zones and fissure-developed or crowded zones which are consistent with regional NEtrending fault;(4) around the inner contact zones of the different intrusive bodies of late Yanshanian Taishanmiao A-type granite;(5) Genetically, it belongs to porphyry molybdenum deposit. The discovery of this deposit provides new training of thought for the prospecting work in the East Qinling-Dabie Mountain metallogenic belt.
引文
Chen Danling,Liu Liang,Cheng,Zichen,Luo Jinhai,Zhng Yunhai.2001.Determination and preliminary study of Indosinian alumious A-type granties in the Qimamtag areas,southeasten Xinjing[J].Geochemica,30(6):314(in Chinese whit English abstract).
Dai Baozhang,Jiang Shaoyong,Wang Xiaolei.2009.Petrogenesis of the granitic porphyry related to the giant molybdenum deposit in Donggou,Henan Province,China:Constraints from petrogeochemistry,zircon U-Pb chronology and Sr-Nd-Hf isotopes[J].Acta Petrologica Sinica,25(11):2889(in Chinese whit English abstract).
Huang Fan,Luo Zhaohua,Lu Xinxiang,Chen Bihe,Yang Zongfeng.2010.Geological characteristics,metallogenic epoch and geological significance of the Zhuyuangou molybdenum deposit in Ruyang area,Henan,Chian[J].Geological Bulletin of China,29(11):1708(in Chinese whit English abstract).
Li Wei,Yan Haiqi,Pan Zhiwei,Lu Yuhong.2008.Prospecting model by using comprehensive information of lead-zinc deposits in Fudian area,Ruyang,Henan[J].Mineral Resources and Geology,22(3):206(in Chinese whit English abstract).
Liu Zhenhong,Wang Zhiyan,Zhang Liang,Yang Changxiu,Wu Taian,Cui Xiaofeng.2004.The Jurassic magmatism of intracratonic orogen in the Southern Margin of the North China Craton[J].Geological Survey and Research,27(1):37-38(in Chinese whit English abstract).
Lou Mingjiu,Ling Qianlong,Lu Xinxiang,Chen Tiehua.1993.Geological characters of Mo-bearing granite in East Qinling area[J].Henan Geology,11(1):3-5(in Chinese whit English abstract).
Lou Mingjiu,Zhang Fumin,Dong Qunying,Xu Yongren,Li Shimei,Li Kunhua.1991.Molybdenum Deposit in China[M].Zhengzhou:Henan Press of Science and Technology,329-351(in Chinese whit English abstract).
Lu Xinxiang.1989.The geological characteristics of Long wangzhuang A-type granite and its significance[J].Acta Petrologica Sinica,(1):75(in Chinese whit English abstract).
Lu Xinxiang,Luo Zhaohua,Huang Fan,Gu Demin,Li Mingli,Yang Zongfeng,Huang Danfeng,Liang Tao,Liu Chuanquan,Zhang Zhen,Gao Yuan.2011.Mo deposit types and mineralization assemblage characteristics in Qinling-Dabie Mountain area[J].Geology in China,38(6):1520-1526(in Chinese whit English abstract).
Ma Hongyi,Huang Chaoyong,Ba Anmin,Li Hongli,Li faan.2006.Metallogenic regularities and prospecting indications of Pb-ZnMo deposit in the south Ruyang area[J].Geology and Prospecting,42(5):18-21(in Chinese whit English abstract).
Qiu Jiansheng,Wang Dezi,Satoshi Kanisawa,Brent I A McInnes.2000.Geochemistry and petrogenesis of aluminous A-type granites in the coastal area of Fujian Province[J].Geochemica,29(4):314(in Chinese whit English abstract).
Qing Min,Han Xianju.2001.The auriferous difference and its appraisal criteria for magnetite series granite in the Western Henan Province[J].Journal of Mineralogy and Petrology,12(4):26(in Chinese whit English abstract).
Yang Gensheng,Huang Chaoyong,Wang Qiuyun,Ban Yihong,Shi Shuran,Fu Zhiguo.2007.Distribution laws and prospecting characteristics of molybdenum deposit in Henan Province[J].Mineral Resources and Geology,21(4):421(in Chinese with English abstract).
Ye Huishou,Mao Jingwen,Xu Lingang,Gao Jianjing,Li Xiangqian,He Chunfen.2008.SHRIMP zircon U-Pb dating and geochemistry of the Taisahnmiao aluminous A-type granite in west Henan Province[J].Geological Review,54(5):709(in Chinese with English abstract).
Zhu Jianhua.2007.Role and significance of geochemical exploration in the discovery of the Dayangshougou molybdenum deposit,Liaoning[J].Geology in China,34(2):343(in Chinese with English abstract).
陈丹玲,刘良,车自成,罗金海,张云翔.2001.祁漫塔格印支期铝质A型花岗岩的确定及初步研究[J],地球化学,30(6):541.
戴宝章,蒋少涌,王孝磊.2009.河南东沟钼矿花岗斑岩成因:岩石地球化学、锆石U-Pb年代学及Sr-Nd-Hf同位素制约[J].岩石学报,25(11):2889.
黄凡,罗照华,卢欣祥,陈必河,杨宗峰.2010.河南汝阳地区竹园沟钼矿地质特征、成矿时代及地质意义[J].地质通报,29(11):1708.
李伟,严海麒,潘志伟,鲁玉红.2008.河南汝阳付店一带铅锌矿床综合信息找矿模型[J].矿产与地质,22(3):206.
刘振宏,王世炎,张良,杨长秀,武太安,崔霄峰.2004.华北陆块南缘燕山期陆内造山岩浆活动特征[J].地质调查与研究,27(1):37-38.
罗铭玖,林潜龙,卢欣祥,陈铁华.1993.东秦岭含钼花岗岩的地质特征[J].河南地质,11(1):3-5.
罗铭玖,张辅民,董群英,许永仁,黎世美,李昆华.1991.中国钼矿床[M].郑州:河南科学技术出版社,329-351.
卢欣祥.1989.龙王石童A型花岗岩地质矿化特征[J].岩石学报,(1):75.
卢欣祥,罗照华,黄凡,谷德敏,李明立,杨宗峰,黄丹峰,梁涛,刘传权,张震,高源.2011.秦岭-大别山地区钼矿类型与矿化组合特征[J].中国地质,38(6):1520-1526.
马红义,黄超勇,巴安民,黎红莉,李发安.2006.汝阳县南部铅锌钼多金属矿床成矿规律及找矿标志[J].地质与勘探,42(5):18-21.
邱检生,王德滋,蟹泽聪史,Brent I A M cInnes.2000.福建沿海铝质A型花岗岩的地球化学及岩石成因[J],地球化学,29(4):314.
卿敏,韩先菊.2001.磁铁矿系列花岗岩含金差异性及其评价准则--以豫西地区为例[J].矿物岩石,12(4):26.
杨根生,黄超勇,王秋云,班宜红,师书然,付治国.2007.河南省钼矿床的分布规律和找矿特征[J].矿产与地质,21(4):421.
叶会寿,毛景文,徐林刚,高建京,谢桂清,李向前,何春芬.2008.豫西太山庙铝质A型花岗岩SHRIMP锆U-Pb年龄及其地球化学特征[J],地质评论,54(5):709.
朱建华.2007.化探在辽宁大杨树沟钼矿发现中的作用与意义[J],中国地质,34(2):343.
(1)马红义,吴邦友.2011.河南省汝阳县竹园沟矿区钼矿勘探报告[R].许昌:河南省地质矿产勘查开发局第二地质勘查院.
(2)吕献廷,贾佑来.1986.付店幅、背孜街幅1∶5万区域地质调查报告[R].许昌:河南省地质局第二地质调查队.
(3)王世炎,刘振宏.2002.内乡县幅1∶25万区域地质调查报告[R].郑州:河南省地质调查院.
(4)吕伟庆,付治国.2005.河南省汝阳县东沟矿区钼矿勘探报告[R].许昌:河南省地质矿产勘查开发局第二地质勘查院.
Dai Baozhang,Jiang Shaoyong,Wang Xiaolei.2009.Petrogenesis of the granitic porphyry related to the giant molybdenum deposit in Donggou,Henan Province,China:Constraints from petrogeochemistry,zircon U-Pb chronology and Sr-Nd-Hf isotopes[J].Acta Petrologica Sinica,25(11):2889(in Chinese whit English abstract).
Huang Fan,Luo Zhaohua,Lu Xinxiang,Chen Bihe,Yang Zongfeng.2010.Geological characteristics,metallogenic epoch and geological significance of the Zhuyuangou molybdenum deposit in Ruyang area,Henan,Chian[J].Geological Bulletin of China,29(11):1708(in Chinese whit English abstract).
Li Wei,Yan Haiqi,Pan Zhiwei,Lu Yuhong.2008.Prospecting model by using comprehensive information of lead-zinc deposits in Fudian area,Ruyang,Henan[J].Mineral Resources and Geology,22(3):206(in Chinese whit English abstract).
Liu Zhenhong,Wang Zhiyan,Zhang Liang,Yang Changxiu,Wu Taian,Cui Xiaofeng.2004.The Jurassic magmatism of intracratonic orogen in the Southern Margin of the North China Craton[J].Geological Survey and Research,27(1):37-38(in Chinese whit English abstract).
Lou Mingjiu,Ling Qianlong,Lu Xinxiang,Chen Tiehua.1993.Geological characters of Mo-bearing granite in East Qinling area[J].Henan Geology,11(1):3-5(in Chinese whit English abstract).
Lou Mingjiu,Zhang Fumin,Dong Qunying,Xu Yongren,Li Shimei,Li Kunhua.1991.Molybdenum Deposit in China[M].Zhengzhou:Henan Press of Science and Technology,329-351(in Chinese whit English abstract).
Lu Xinxiang.1989.The geological characteristics of Long wangzhuang A-type granite and its significance[J].Acta Petrologica Sinica,(1):75(in Chinese whit English abstract).
Lu Xinxiang,Luo Zhaohua,Huang Fan,Gu Demin,Li Mingli,Yang Zongfeng,Huang Danfeng,Liang Tao,Liu Chuanquan,Zhang Zhen,Gao Yuan.2011.Mo deposit types and mineralization assemblage characteristics in Qinling-Dabie Mountain area[J].Geology in China,38(6):1520-1526(in Chinese whit English abstract).
Ma Hongyi,Huang Chaoyong,Ba Anmin,Li Hongli,Li faan.2006.Metallogenic regularities and prospecting indications of Pb-ZnMo deposit in the south Ruyang area[J].Geology and Prospecting,42(5):18-21(in Chinese whit English abstract).
Qiu Jiansheng,Wang Dezi,Satoshi Kanisawa,Brent I A McInnes.2000.Geochemistry and petrogenesis of aluminous A-type granites in the coastal area of Fujian Province[J].Geochemica,29(4):314(in Chinese whit English abstract).
Qing Min,Han Xianju.2001.The auriferous difference and its appraisal criteria for magnetite series granite in the Western Henan Province[J].Journal of Mineralogy and Petrology,12(4):26(in Chinese whit English abstract).
Yang Gensheng,Huang Chaoyong,Wang Qiuyun,Ban Yihong,Shi Shuran,Fu Zhiguo.2007.Distribution laws and prospecting characteristics of molybdenum deposit in Henan Province[J].Mineral Resources and Geology,21(4):421(in Chinese with English abstract).
Ye Huishou,Mao Jingwen,Xu Lingang,Gao Jianjing,Li Xiangqian,He Chunfen.2008.SHRIMP zircon U-Pb dating and geochemistry of the Taisahnmiao aluminous A-type granite in west Henan Province[J].Geological Review,54(5):709(in Chinese with English abstract).
Zhu Jianhua.2007.Role and significance of geochemical exploration in the discovery of the Dayangshougou molybdenum deposit,Liaoning[J].Geology in China,34(2):343(in Chinese with English abstract).
陈丹玲,刘良,车自成,罗金海,张云翔.2001.祁漫塔格印支期铝质A型花岗岩的确定及初步研究[J],地球化学,30(6):541.
戴宝章,蒋少涌,王孝磊.2009.河南东沟钼矿花岗斑岩成因:岩石地球化学、锆石U-Pb年代学及Sr-Nd-Hf同位素制约[J].岩石学报,25(11):2889.
黄凡,罗照华,卢欣祥,陈必河,杨宗峰.2010.河南汝阳地区竹园沟钼矿地质特征、成矿时代及地质意义[J].地质通报,29(11):1708.
李伟,严海麒,潘志伟,鲁玉红.2008.河南汝阳付店一带铅锌矿床综合信息找矿模型[J].矿产与地质,22(3):206.
刘振宏,王世炎,张良,杨长秀,武太安,崔霄峰.2004.华北陆块南缘燕山期陆内造山岩浆活动特征[J].地质调查与研究,27(1):37-38.
罗铭玖,林潜龙,卢欣祥,陈铁华.1993.东秦岭含钼花岗岩的地质特征[J].河南地质,11(1):3-5.
罗铭玖,张辅民,董群英,许永仁,黎世美,李昆华.1991.中国钼矿床[M].郑州:河南科学技术出版社,329-351.
卢欣祥.1989.龙王石童A型花岗岩地质矿化特征[J].岩石学报,(1):75.
卢欣祥,罗照华,黄凡,谷德敏,李明立,杨宗峰,黄丹峰,梁涛,刘传权,张震,高源.2011.秦岭-大别山地区钼矿类型与矿化组合特征[J].中国地质,38(6):1520-1526.
马红义,黄超勇,巴安民,黎红莉,李发安.2006.汝阳县南部铅锌钼多金属矿床成矿规律及找矿标志[J].地质与勘探,42(5):18-21.
邱检生,王德滋,蟹泽聪史,Brent I A M cInnes.2000.福建沿海铝质A型花岗岩的地球化学及岩石成因[J],地球化学,29(4):314.
卿敏,韩先菊.2001.磁铁矿系列花岗岩含金差异性及其评价准则--以豫西地区为例[J].矿物岩石,12(4):26.
杨根生,黄超勇,王秋云,班宜红,师书然,付治国.2007.河南省钼矿床的分布规律和找矿特征[J].矿产与地质,21(4):421.
叶会寿,毛景文,徐林刚,高建京,谢桂清,李向前,何春芬.2008.豫西太山庙铝质A型花岗岩SHRIMP锆U-Pb年龄及其地球化学特征[J],地质评论,54(5):709.
朱建华.2007.化探在辽宁大杨树沟钼矿发现中的作用与意义[J],中国地质,34(2):343.
(1)马红义,吴邦友.2011.河南省汝阳县竹园沟矿区钼矿勘探报告[R].许昌:河南省地质矿产勘查开发局第二地质勘查院.
(2)吕献廷,贾佑来.1986.付店幅、背孜街幅1∶5万区域地质调查报告[R].许昌:河南省地质局第二地质调查队.
(3)王世炎,刘振宏.2002.内乡县幅1∶25万区域地质调查报告[R].郑州:河南省地质调查院.
(4)吕伟庆,付治国.2005.河南省汝阳县东沟矿区钼矿勘探报告[R].许昌:河南省地质矿产勘查开发局第二地质勘查院.