Quantitative Analysis of Morphological Zonations of Quartz Veins in Weilasituo Sn-polymetallic Deposit, Inner Mongolia
-
摘要: 为探讨维拉斯托锡多金属矿床含锡石英脉形态分带的成矿动力学机制，通过利用分形和混合分布工具对断层脉带和上、下节理脉带进行定量分析。上、下节理脉带在脉厚、钨锡品位分形维数和混合筛分分布方面均具有相似性，暗示了两者可能具有相似的成矿机制。与上、下节理脉带相比，断层脉带的脉厚和钨锡品位分形维数均较小，断层脉带内的聚焦化流动、较低的脉体成核率、脉体叠加生长和矿化叠加富集可能是导致断层脉带的厚脉和富矿比例均高于上、下节理脉带的重要原因。Abstract: In order to discuss the dynamic mineralization mechanism of Sn-bearing quartz vein morphology zoning in the Weilasituo Sn-polymetallic deposit, three zonations including the upper joint vein zonation, the fault vein zonation and the lower joint vein zonation are analyzed quantitatively by means of vein thickness fractal, tin grades fractal, tungsten grades fractal and mixed distributions. It is found that the similarities of the thickness, Sn-W fractal dimensions and the mixed distributions of ore grades components in the upper and lower joint-vein zonations indicate that the two may have similar metallogenic mechanism. Compared with the upper and lower joint vein zonations, the thickness and the Sn and W grades of fractal dimensions in the fault vein are both small. The focused flow, lower nucleation rate, superimposed growth of veins and the superposition of mineralization may be the reasons for the higher proportions of thick vein and high-grade ores in the fault vein than that in the two joint vein zonations.
-
Key words:
- Sn-polymetallic deposit /
- gently inclined quartz vein /
- fractal /
- mixed distribution /
- Inner Mongolia
-
-
付旭, 胡格吉乐吐, 罗少飞, 等.内蒙古自治区克什克腾旗维拉斯托矿区锡多金属矿勘探报告[R].呼和浩特:内蒙古地质勘查有限责任公司, 2015.
管育春, 杨宗锋, 祝新友, 等.内蒙古北大山杂岩体成因及其地质意义[J]. 矿产勘查, 2017, 8(6):1054-1068.
GUAN Yuchun, YANG Zongfeng, ZHU Xinyou, et al. Petrogenesis and geological significance of the Beidashan complex rockmass, Inner Mongolia[J]. Mineral Exploration, 2017, 8(6):1054-1068.
郭秉程, 苏美霞, 杜映东, 等. 大兴安岭构造层与赋矿地层的多元化特征探讨[J]. 西北地质, 2017, 50(1):78-89.
GUO Bingcheng, SU Meixia, DU Yingdong, et al. Discussion of the diversified characteristics of structural layer and ore-bearting strata in Great Xing'anRanges[J]. Northwestern Geology, 2017, 50(1):78-89.
郭贵娟.内蒙古维拉斯托锡多金属矿床地质特征及成因探讨[D].北京:中国地质大学(北京), 2016.
GUO Guijuan. Discussion on geological characteristics and metallogenic origin of Weilasituo Sn polymetal deposit in InnerMongolia[D]. Beijing:China University of Geosciences (Beijing), 2016.
江思宏, 聂凤军, 刘翼飞, 等.内蒙古拜仁达坝及维拉斯托银多金属矿床的硫和铅同位素研究[J]. 矿床地质, 2010, 29(1):101-112.
JIANG Sihong, NIE Fengjun, LIU Yifei, et al. Sulfur and lead isotopic compositions of Bairendaba and Weilasituo silver-polymetallic deposits, Inner Mongolia[J]. Mineral Deposits, 2010, 29(1):101-112.
刘瑞麟, 武广, 李铁刚, 等.大兴安岭南段维拉斯托锡多金属矿床LA-ICP-MS锡石和锆石U-Pb年龄及其地质意义[J]. 地学前缘, 2018a, 25(5):189-207.
LIU Ruilin, WU Guang, LI Tiegang, et al. LA-ICP-MS cassiterite and zircon U-Pb ages of the Weilasituo tin-polymetallic deposit in the southern Great Xing'an Range and their geological significance[J]. Earth Science Frontiers, 2018a, 25(5):183-201.
刘瑞麟, 武广, 陈公正, 等.大兴安岭南段维拉斯托锡多金属矿床流体包裹体和同位素特征[J]. 矿床地质, 2018b, 37(2):199-224.
LIU Ruilin, WU Guang, CHEN Gongzheng, et al. Characteristics of fluid inclusions and H-O-C-S-Pb isotopes of Weilasituo Sn-polymetallic deposit in southern Da HingganMountains[J]. Mineral Deposits, 2018b, 37(2):199-224.
刘向冲, 侯翠霞, 申维, 等.MML-EM方法及其在化探数据混合分布中的应用[J]. 地球科学(中国地质大学学报), 2011, 36(02):180-184.
LIU Xiangchong, HOU Cui xia, SHEN Wei, et al. MML-EM algorithm and its application on mixed distributions of geochemical data[J]. Earth Science-Journal of China University of Geoscience, 2011, 36(02):180-184.
刘向冲, 张德会, 赵波, 等.漂塘钨矿床"五层楼"垂直形态分带定量分析[J]. 高校地质学报, 2017, 23(3):408-416.
LIU Xiangchong, ZHANG Dehui, ZHAO Bo, et al. Quantative analysis of the "Five-floor" vertical morpholocial zonation in the Piaotang tungsten deposits, South China[J]. Geological Journal of China Universities, 2017, 23(3):408-416.
申维.分形混沌与矿产预测[M]. 北京:地质出版社, 2002.
SHEN Wei. Fractal chaos and mineral prediciton[M]. Beijing:Geological Publishing House, 2002.
王新宇, 侯青叶, 王瑾, 等.内蒙古维拉斯托矿床花岗岩类SHRIMP年代学及Hf同位素研究[J]. 现代地质, 2013, 27(1):67-78.
WANG Xinyu, HOU Qingye, WANG Jin, et al. SHRIMP geochronology and Hf isotope of zircons from granitoids of the Weilasituo deposit in InnerMongolia[J]. Geoscience, 2013, 27(1):67-78.
翟德高, 刘家军, 李俊明, 等.内蒙古维拉斯托斑岩型锡矿床成岩、成矿时代及其地质意义[J]. 矿床地质, 2016, 35(5):1011-1022.
ZHAI Degao, LIU Jiajun, LI Junming, et al. Geochronological study of Weilasituo porphyry type Sn deposit in Inner Mongolia and its geological significance[J]. Mineral Deposits, 2016, 35(5):1011-1022.
赵鹏大, 胡旺亮, 李紫金, 等.矿床统计预测[M]. 北京:地质出版社, 1994.
ZHAO Pengda, HU Wangliang, LI Zijin, et al. Statistical prediction of ore deposits[M]. Beijing:Geological Publishing House, 1994.
周振华, 高旭, 欧阳荷根, 等.锡钨锂矿化与外围脉状铅锌银铜矿化的内在成因关系和形成机制-以内蒙古维拉斯托锡钨锂多金属矿床为例[J]. 矿床地质, 2019, 38(5):1004-1022.
ZHOU Zhenhua, GAO Xu, OUYANG Hegen, et al. Formation mechanism intrinsic genetic relationship between tin-tungsten-lithium mineralization and peripheral lead-zinc-silver-copper mineralization:Exemplified by Welasituo tin-tungsten-lithuim polymetallic deposit, Inner Mongolia[J]. Mineral Deposits, 2019, 38(5):1004-1022.
祝新友, 张志辉, 付旭, 等.内蒙古赤峰维拉斯托大型锡多金属矿的地质地球化学特征[J]. 中国地质, 2016, 43(1):188-208.
ZHU Xinyou, ZHANG Zhihui, FU Xu, et al. Geological and geochemical characterisitcs of the Weilasito Sn-Zn deposit, Inner Mongolia[J]. Geology in China, 2016, 43(1):188-208.
Allegre C J, Lewin E. Scaling laws and geochemical distributions[J]. Earth Planet Science Letters, 1995, 132 (1-4):1-13.
Cheng Qiuming, Agterberg F, Ballantyne S. The separation of geochemical anomalies from background by fractal methods[J]. Journal of Geochemical Exploration, 1994, 51(2):109 -130.
Figueiredo M A T, Jain A K. Unsupervised learning of finite mixture models. Pattern Analysis and Machine Intelligence[J]. IEEE Transactions on, 2002, 24(3):381 -396.
Foxford K A, Nicholson R A, Polya D A, et al. Extensional failure and hydraulic valving at Minas da Panasqueira, Portugal[J]. Journal of Structural Geology, 2000, 22:1065-1086.
Gillespie P A, Johnston J D, Loriga M A, et al. Influence of layering on vein systematics in line samples[J]. Geological Society London Special Publications, 1999, 155(1):35 -56.
Liu Yifei, Jiang Sihong, Bagas L. The genesis of metal zonation in the Weilasituo and Bairendaba Ag-Zn-Pb-Cu-(Sn-W) deposits in the shallow part of a porphyry Sn-W-Rb system, Inner Mongolia, China[J]. Ore Geology Reviews, 2016, 75:153-73.
Liu Xiangchong, Xing Huilin, Zhang Dehui. Fluid focusing and its link to vertical morphological zonation at the Dajishan vein-type tungsten deposit, South China[J]. Ore Geology Reviews, 2014, 62:245-258.
Liu Xiangchong, Wang Wenlei, Pei Yingru, et al. A knowledge-driven way to interpret the isometric log-ratio transformation and mixture distributions of geochemical data[J]. Journal of Geochemical Exploration, 2020, 210:1-9.
Monecke T, Gemmell J B, Monecke J. Fractal distributions of veins in drill core from the Hellyer VHMS deposit, Australia:constraints on the origin and evolution of the mineralising system[J]. Mineralium Deposita, 2001, 36(5):406-415.
Ouyang Hegen, Mao Jingwen, Santosh M, et al. The Early Cretaceous Weilasituo Zn-Cu-Ag vein deposit in the southern Great Xing'an Range, northeast China:Fluid inclusions, H, O, S, Pb isotope geochemistry and genetic implications[J]. Ore Geology Reviews, 2014, 56:503-515.
Roberts S, Sanderson D J, Gumiel P. Analysis of Sn-W mineralization from Central Iberia:Insight into of fracture connectivity in the formation of an ore deposit[J]. Economic Geology, 1998, 93:360-365.
Roberts S, Sanderson D J, Gumiel P. Fractal analysis and percolation properties of veins[J]. Geological Society London Special Publications, 1999, 155(1):7-16.
Sanderson D J, Roerberts S, Gumiel P, et al. Quantitative analysis of tin-and tungsten-bearing sheeted vein Systems[J]. Economic Geology, 2008, 103:1043 -1056.
Wang Fengxiang, Jiang Sihong, Liu Yifei. Geological, geochemical, and geochronological characteristics of Weilasituo Sn-polymetal deposit, Inner Mongolia, China[J]. Ore Geology Reviews, 2017, 80:1206-1229.
Xie Shuyun, Yang Yongguo, Bao Zhengyu, et al. Mineral resource analysis by parabolic fractals[J]. Mining Science and Technology, 2009, 19(1):91-96.
-
计量
- 文章访问数: 625
- PDF下载数: 53
- 施引文献: 0
下载: