河北省丰宁二道沟-北灰窑银多金属矿控矿因素及找矿方向分析
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摘要
河北省丰宁二道沟-北灰窑银多金属矿区地处大窝铺-上黄旗构造岩浆岩成矿带西部,多组深大断裂交会区域,断裂构造、岩浆热液活动发育,构成该区主要成矿地质背景。已发现营房银铅锌矿床、北岔沟门铅锌矿床和牛圈银金矿等众多大型—中型铅锌银金矿床,区域矿床成矿与燕山期岩浆活动和断裂构造活动密切相关。通过1∶1万土壤地球化学测量数据分析,该区Pb,Ag,Zn元素富集,主成矿元素组合异常发育,共圈定出4个组合异常,化探异常与矿(化)体相吻合。区内已发现8条蚀变矿化带,矿体形态、产状及矿化范围严格受断裂构造控制。通过不同地质体微量元素地球化学特征分析可知,燕山期花岗岩岩体和红旗营子群地层内Ag,Pb,Zn元素属于富集型和强分散型,利于成矿,同时为该区成矿提供了丰富的物质来源。绿泥石化、褐铁矿化、黄铁矿化、铁锰矿化等是识别蚀变带的有利标志,亦是寻找银多金属矿的重要标志。二道沟-北灰窑银多金属矿区属于受断裂构造控制的中低温热液矿床。通过对区域成矿地质条件和矿区地质特征的分析,总结了该区的控矿因素、成矿物质来源和矿床类型,为进一步地质勘查工作指明了方向。
Erdaogou-Beihuiyao silver polymetallic deposit is located in the west of Dawopu-Shanghuangqi tectonic magmatic metallogenic belt. It is a intersection region of many deep faults. Tectonic,magmatic hydrothermal activity developed well and constituted main metallogenic geological background of this area. A number of large and medium-sized lead-zinc-silver-gold deposits,such as Yingfang silver-lead-zinc deposit,Beichagoumen lead-zinc deposit and Niujuan silver-gold deposit have been found. Regional deposit forming is closely related to magmatic activity in Yanshan period and tectonic activity. Through soil geochemical survey data analysis with the scale of 1 ∶ 10000,three elements as Pb,Ag and Zn enriched in this area. Main ore-forming elements combination developed abnormally. Four combination anomalies have been circled,and geochemical anomaly is consistent with ore body. Eights mineralization alteration zones Thave been found. Shape,occurrence and mineralization of ore bodies are strictly controlled by faults. Through analysis on different geological geochemical characteristics of trace elements,it is showed that the formation of Ag,Pb,Zn elements belong to the rich and strong dispersion type in Yanshan granites and Hongqiyingzi group. It provides a rich source of materials for mineralization. It is a good sign to identify the alteration zone,and it is also an important indicator to find silver polymetallic ore. Erdaogou-Beihuiyao silver polymetallic deposit belongs to middle-low temperature hydrothermal deposit controlled by fracture structures. Based on the analysis of regional metallogenic geological conditions and geological characteristics of the mining area,the ore controlling factors,the source of ore-forming materials and the types of deposits in this area have been summarized.
Erdaogou-Beihuiyao silver polymetallic deposit is located in the west of Dawopu-Shanghuangqi tectonic magmatic metallogenic belt. It is a intersection region of many deep faults. Tectonic,magmatic hydrothermal activity developed well and constituted main metallogenic geological background of this area. A number of large and medium-sized lead-zinc-silver-gold deposits,such as Yingfang silver-lead-zinc deposit,Beichagoumen lead-zinc deposit and Niujuan silver-gold deposit have been found. Regional deposit forming is closely related to magmatic activity in Yanshan period and tectonic activity. Through soil geochemical survey data analysis with the scale of 1 ∶ 10000,three elements as Pb,Ag and Zn enriched in this area. Main ore-forming elements combination developed abnormally. Four combination anomalies have been circled,and geochemical anomaly is consistent with ore body. Eights mineralization alteration zones Thave been found. Shape,occurrence and mineralization of ore bodies are strictly controlled by faults. Through analysis on different geological geochemical characteristics of trace elements,it is showed that the formation of Ag,Pb,Zn elements belong to the rich and strong dispersion type in Yanshan granites and Hongqiyingzi group. It provides a rich source of materials for mineralization. It is a good sign to identify the alteration zone,and it is also an important indicator to find silver polymetallic ore. Erdaogou-Beihuiyao silver polymetallic deposit belongs to middle-low temperature hydrothermal deposit controlled by fracture structures. Based on the analysis of regional metallogenic geological conditions and geological characteristics of the mining area,the ore controlling factors,the source of ore-forming materials and the types of deposits in this area have been summarized.
引文
[1]毕伏科,肖文暹.河北省成矿区带和找矿远景区[J].地质调查与研究,2006,29(2):107-114.
[2]张国辉.牛圈银(金)矿床流体包裹体研究[J].矿物岩石地球化学通报,1995,14(3):153-154.
[3]黄典豪,吴澄宇,张长江.蔡家营铅-锌-银矿床的稳定同位素地球化学研究[J].地球化学,1997,26(4):25-35.
[4]任耀武,曹倩雯.河北丰宁营房铅锌银矿床银的赋存状态及富集规律[J].华北地质矿产杂志,1995,10(1):77-86.
[5]胡小蝶,沈保丰,毛德宝,等.冀北蔡家营铅锌矿床成因探讨[J].地质调查与研究,2005,28(4):221-227.
[6]刘建权,赵鹏,董帅,等.内蒙古高地银多金属矿地质特征与找矿方向[J].山东国土资源,2016,32(7):16-20.
[7]姚玉增,巩恩普,崔显德,等.河北丰宁银矿控矿因素与深部远景分析[J].矿产与地质,2005,19(3):267-270.
[8]河北省地质矿产局.河北省岩石地层[M].北京:中国地质大学出版社,1996.
[9]潘家永,张乾,芮宗瑶.河北蔡家营铅-锌-银多金属矿床成矿物理化学条件探讨[J].地球化学,1994,23(12):103-112.
[10]杨敏之.冀北银矿床类型、矿床地质地球化学、地史-演化模式及找矿方向[J].地质找矿论丛,2000,15(3):193-203.
[11]汪子杰,李青梅,王群,等.内蒙古突泉县大砬沟银多金属矿化区地质特征及找矿方向[J].山东国土资源,2016,32(5):20-24
[12]鄢明才,迟清华.中国东部地壳与岩石的化学组成[M].北京:科学出版社,1997.
[13]任耀武.红旗营子群研究—冀北铅锌银矿床的矿源层[J].华北地质矿产杂志,1997,12(1):44-51.
[14]魏印涛,邱成贵,张斌,等.区域化探方法试验探讨——以胶东半岛莱阳幅1∶20万水系沉积物测量为例[J].山东国土资源,2015,31(12):54-57.
[15]李超,胡西顺,范红科,等.陕西省旬阳县红花坪锌矿床地质地球化学特征及成因探讨[J].山东国土资源,2015,31(8):28-32.
[16]王明燕.大西沟金矿地质特征及成矿规律研究[D].北京:中国地质大学,2008.
[17]穆锡川,徐忠华,孔晓敏,等.玲珑金矿田山岔口金矿床地质特征及深部找矿潜力[J].山东国土资源,2016,32(12):22-25.
[18]钱建平.构造地球化学方法找矿的基本问题[J].云南地质,2006,25(4):384.
[19]戚长谋.元素地球化学分类探讨[J].吉林大学学报:地球科学版,1997,21(4):361-365.
[20]毛德宝,钟长汀,陈志宏,等.冀北铅锌银矿床成矿地质要素的结构分析[J].地球科学-中国地质大学学报,1999,24(5):464-467.
[21]毛德宝,钟长汀,陈志宏,等.华北地块北缘中段铅锌银矿床成矿作用讨论[J].前寒武纪研究进展,2002,25(2):105-112.
[22]毛德宝,钟长汀,武永平,等.冀北北岔沟门铅锌多金属矿床地质特征及成因[J].地质调查与研究,2005,28(4):228-239.
[23]辛建伟,李永刚.冀北银矿成矿规律及成矿模式探讨[J].地质找矿论丛,2007,22(4):259-263.
[24]张建太,李兆营,刘卫东.弱激电异常在寻找隐伏铅多金属矿的应用——以青海都兰县哈茨谱地区为例[J].山东国土资源,2015,31(12):50-53.
(1)华北有色地质勘查局,河北省丰宁满族自治区四岔口乡牛圈银(金)矿床勘探地质报告,1990年。
(2)华北有色地质勘探公司五一四地质大队,河北省丰宁县撒岱沟门钼矿地质评价报告,1985年。
[2]张国辉.牛圈银(金)矿床流体包裹体研究[J].矿物岩石地球化学通报,1995,14(3):153-154.
[3]黄典豪,吴澄宇,张长江.蔡家营铅-锌-银矿床的稳定同位素地球化学研究[J].地球化学,1997,26(4):25-35.
[4]任耀武,曹倩雯.河北丰宁营房铅锌银矿床银的赋存状态及富集规律[J].华北地质矿产杂志,1995,10(1):77-86.
[5]胡小蝶,沈保丰,毛德宝,等.冀北蔡家营铅锌矿床成因探讨[J].地质调查与研究,2005,28(4):221-227.
[6]刘建权,赵鹏,董帅,等.内蒙古高地银多金属矿地质特征与找矿方向[J].山东国土资源,2016,32(7):16-20.
[7]姚玉增,巩恩普,崔显德,等.河北丰宁银矿控矿因素与深部远景分析[J].矿产与地质,2005,19(3):267-270.
[8]河北省地质矿产局.河北省岩石地层[M].北京:中国地质大学出版社,1996.
[9]潘家永,张乾,芮宗瑶.河北蔡家营铅-锌-银多金属矿床成矿物理化学条件探讨[J].地球化学,1994,23(12):103-112.
[10]杨敏之.冀北银矿床类型、矿床地质地球化学、地史-演化模式及找矿方向[J].地质找矿论丛,2000,15(3):193-203.
[11]汪子杰,李青梅,王群,等.内蒙古突泉县大砬沟银多金属矿化区地质特征及找矿方向[J].山东国土资源,2016,32(5):20-24
[12]鄢明才,迟清华.中国东部地壳与岩石的化学组成[M].北京:科学出版社,1997.
[13]任耀武.红旗营子群研究—冀北铅锌银矿床的矿源层[J].华北地质矿产杂志,1997,12(1):44-51.
[14]魏印涛,邱成贵,张斌,等.区域化探方法试验探讨——以胶东半岛莱阳幅1∶20万水系沉积物测量为例[J].山东国土资源,2015,31(12):54-57.
[15]李超,胡西顺,范红科,等.陕西省旬阳县红花坪锌矿床地质地球化学特征及成因探讨[J].山东国土资源,2015,31(8):28-32.
[16]王明燕.大西沟金矿地质特征及成矿规律研究[D].北京:中国地质大学,2008.
[17]穆锡川,徐忠华,孔晓敏,等.玲珑金矿田山岔口金矿床地质特征及深部找矿潜力[J].山东国土资源,2016,32(12):22-25.
[18]钱建平.构造地球化学方法找矿的基本问题[J].云南地质,2006,25(4):384.
[19]戚长谋.元素地球化学分类探讨[J].吉林大学学报:地球科学版,1997,21(4):361-365.
[20]毛德宝,钟长汀,陈志宏,等.冀北铅锌银矿床成矿地质要素的结构分析[J].地球科学-中国地质大学学报,1999,24(5):464-467.
[21]毛德宝,钟长汀,陈志宏,等.华北地块北缘中段铅锌银矿床成矿作用讨论[J].前寒武纪研究进展,2002,25(2):105-112.
[22]毛德宝,钟长汀,武永平,等.冀北北岔沟门铅锌多金属矿床地质特征及成因[J].地质调查与研究,2005,28(4):228-239.
[23]辛建伟,李永刚.冀北银矿成矿规律及成矿模式探讨[J].地质找矿论丛,2007,22(4):259-263.
[24]张建太,李兆营,刘卫东.弱激电异常在寻找隐伏铅多金属矿的应用——以青海都兰县哈茨谱地区为例[J].山东国土资源,2015,31(12):50-53.
(1)华北有色地质勘查局,河北省丰宁满族自治区四岔口乡牛圈银(金)矿床勘探地质报告,1990年。
(2)华北有色地质勘探公司五一四地质大队,河北省丰宁县撒岱沟门钼矿地质评价报告,1985年。