Discovery, Geological Characteristics and Genesis of Sedimentary Metamorphic Manganese Carbonate Deposit in Muhatayi, Western Junggar, Xinjiang
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摘要:
木哈塔依锰矿的发现，标志着西准噶尔地区锰矿的找矿新发现。该锰矿位于西准噶尔木哈塔依蛇绿混杂岩带北部，矿体赋存于硅质岩中，深部表现为含杂色角砾硅质岩，呈层状分布。据岩矿鉴定、物相分析、背散射及激光拉曼分析，地表锰为氧化锰，未见碳酸锰；深部锰为菱锰矿及少量蔷薇辉石和变体锰三斜辉石，菱锰矿大部分赋存于构造热液细脉中。地表已圈定氧化锰矿体10余条，深部圈定4条碳酸锰矿体，碳酸锰产出部位为锰的原生层位。地表锰矿体沿走向规模较大，东西两侧延伸达2 km，且矿体在东侧出现膨大现象，矿脉显著增多。深部碳酸锰矿体平均品位为17.95%，达到了贫锰矿的一般工业指标，显示该区较好的找锰潜力。矿床类型为赋存于蛇绿混杂岩中的沉积变质热液叠加改造型锰矿床，是西准噶尔地区新发现的锰矿类型。近年来，蛇绿混杂岩中发现锰矿的报道越来越多，增生型造山带中的大洋板片地层是古老大洋锰结核赋存的最佳位置，深海远洋放射虫硅质岩是大洋板片地层的重要组成部分，具有较好的找矿前景。
Abstract:The discovery of the Muhatayi manganese deposit marks a breakthrough in the exploration of manganese deposits in the western Junggar region. The manganese deposit is located in the northern part of the Muhatayi ophiolite melange belt in West Junggar, and the ore body is hosted in siliceous rocks. In the deep part, it appears as siliceous rocks with variegated breccia, distributed in a layered manner. According to rock and mineral identification, phase analysis, back scattering, and laser Raman analysis, the surface manganese is manganese oxide, and no manganese carbonate is found; Deep manganese consists of Rhodochrosite, a small amount of Rhodonite and variant manganese triclinite, and most of Rhodochrosite occurs in tectonic hydrothermal veinlets. More than 10 manganese oxide ore bodies have been delineated on the surface, and 4 Manganese carbonate ore bodies have been delineated in the deep. The Manganese carbonate may be produced in the primary layer of manganese. The surface manganese ore body has a large scale along the strike direction, extending up to 2 kilometers on both sides, and the ore body has expanded on the east side, resulting in a significant increase in ore veins. The average grade of deep Manganese carbonate ore body is 17.95%, reaching the general industrial index of lean manganese ore, indicating that the area has good manganese prospecting potential. The deposit type is a sedimentary metamorphic hydrothermal superimposed and reformed manganese deposit that occurs in the ophiolitic melange, which is the first discovery of this type of manganese deposit in the western Junggar region. In recent years, there have been more and more reports about the discovery of manganese deposits in ophiolite melange. The oceanic slab strata in the accretionary Orogenic belt are the best places for the occurrence of ancient oceanic Manganese nodule. The deep-sea pelagic Radiolaria siliceous rocks are an important part of the oceanic slab strata, with good prospects for ore prospecting.
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Key words:
- leposit /
- Manganese ore /
- laser raman /
- geological characteristics /
- cause analysis /
- sedimentary metamorphism /
- ophiolitic melange /
- West Junggar
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表 1 木哈塔依矿区锰物相测试结果（%）
Table 1. Manganese phase testing results in the Muhatayi mining area (%)
序号 送检编号 碳酸锰 软锰矿中锰 含锰赤铁矿中锰 硅酸盐中锰 对应基本分析结果 TFe Mn SiO2 S 1 wx1 0.74 0.14 33.46 0.21 4.64 4.69 79.18 0.68 2 wx2 1.07 0.14 43.15 0.37 5.06 36.01 17.59 0.57 3 wx3 10.51 0.06 1.14 3.03 / 19.83 / / 
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[1] 晁文迪, 陈贺起, 张振福, 等. “蛇绿岩型”锰矿——一种新类型锰矿床[A]. 中国矿物岩石地球化学学会矿床地球化学专业委员会. 第十届全国成矿理论与找矿方法学术讨论会论文摘要集[C].2023.
CHAO Wendi, CHEN Heqi, ZHANG Zhenfu, et al. "Ophiolite type" manganese deposit - a new type of manganese deposit [A]. Summary of papers from the 10th National Symposium on Metallogenic Theory and Exploration Methods of the Mineral and Rock Geochemistry Professional Committee of the Chinese Society of Mineral and Rock Geochemistry[C]. 2023.
[2] 陈登辉, 隋清霖, 郭周平, 等. 西昆仑玛尔坎苏地区穆呼锰矿含锰岩系沉积环境——来自䗴类化石及碳酸盐岩碳、氧、锶同位素证据[J]. 西北地质, 2022, 55（2）: 1−13.
CHEN Denghui, SUI Qinglin, GUO Zhouping, et al. Sedimentary Environment of Mn-bearing Carbonate from the Muhu Manganese Deposit in Malkansu, West Kunlun: Evidences from Fusulinids and C-O-Sr Isotopes[J]. Northwestern Geology,2022,55(2):1−13.
[3] 陈佳, 董树义, 张自贤, 等. 重庆高燕锰矿床含锰碳酸盐岩化学成分标型特征[J]. 成都理工大学学报(自然科学版), 2022, 49(2): 239−248.
CHEN Jia, DONG Shuyi, ZHANG Zixian, et al. Typomorphic characteristics of chemical composition of Mn-bearing carbonaterocks from Gaoyan manganese deposit, Chongqing, China[J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2022, 49(2): 239−248.
[4] 丛源, 董庆吉, 肖克炎, 等. 中国锰矿资源特征及潜力预测[J]. 地学前缘, 2018, 25（3）: 118−137.
CONG Yuan, DONG Qingji, XIAO Keyan, et al. Characteristics and predicted potential of Mn resources in China[J]. Earth Science Frontiers,2018,25(3):118−137.
[5] 丁建华, 邢树文, 肖克炎, 等. 阿尔泰-准噶尔北缘铬铁矿-Cu-Au-Pb-Zn-Ni成矿带主要成矿地质特征及潜力分析[J]. 地质学报, 2016, 90（7）: 1334−1352. doi: 10.3969/j.issn.0001-5717.2016.07.006
DING Jianhua, XING Shuwen, XIAO Keyan, et al. Geological Characteristics and Resource Potenial Analysis of the Altay-North Junggar Chromite-Cu-Au-Pb-Zn-Ni Metallogenic Belt[J]. Acta Geologica Sinica,2016,90(7):1334−1352. doi: 10.3969/j.issn.0001-5717.2016.07.006
[6] 高永宝, 滕家欣, 陈登辉, 等. 新疆西昆仑玛尔坎苏锰矿带成矿地质特征及找矿方向[J]. 西北地质, 2017, 50（1）: 261−269. doi: 10.3969/j.issn.1009-6248.2017.01.022
GAO Yongbao, TENG Jiaxin, CHEN Denghui, et al. Metallogenic Geological Characteristics and Prospecting Direction of Maerkansu Manganese Ore Belt in West Kunlun, Xinjiang[J]. Northwestern Geology,2017,50(1):261−269. doi: 10.3969/j.issn.1009-6248.2017.01.022
[7] 李理, 王国灿, 晏文博, 等. 西准噶尔克拉玛依后山地区不同方向劈理特征及其动力学背景[J]. 地球科学（中国地质大学学报）, 2015, 40（3）: 521−534.
LI Li, WANG Guocan, YAN Wenbo, et al. Characteristics of Cleavages with Different Directions in Houshan Area of Karamay, Xinjiang, NW China and Their Geodynamic Backgroud[J]. Journal of Earth Science,2015,40(3):521−534.
[8] 覃建华, 李永军, 王盼龙, 等. 西准噶尔乌尔禾地区哈拉阿拉特组火山碎屑复理石的发现及地质意义[J]. 西北地质, 2022, 55（3）: 274−285.
QIN Jianhua, LI Yongjun, WANG Panlong, et al. The Discovery and Geological Significance of Pyroclastic Flysch of Hala'alate Formation in Urho Area of West Junggar[J]. Northwestern Geology,2022,55(3):274−285.
[9] 史建杰. 西准噶尔晚古生代洋陆转换和达拉布特断裂的演化历史[D]. 北京: 中国地质科学院, 2017.
SHI Jianjie. The Late Paleozoic Ocean-continent Transformation and Darabut Fault Evolution History of the Western Junggar [D]. Beijing: Chinese Academy of Geological Sciences, 2017.
[10] 宋博, 许伟, 计文化, 等. 中亚造山带恩格尔乌苏蛇绿混杂岩中发现大洋型锰结核[J]. 中国地质, 2021, 48（4）: 1302−1303. doi: 10.12029/gc20210428
SONG Bo, XU Wei, JI Wenhua, et al. Discovery of oceanic manganese nodules in the Engelwusu ophiolitic mélange in the Central Asian Orogenic Belt[J]. Geology in China,2021,48(4):1302−1303. doi: 10.12029/gc20210428
[11] 宋永, 雍锦杰, 李世鑫, 等. 西准噶尔地区石炭纪残余洋盆充填演化的地层学记录[J]. 地层学杂志, 2022, 46（2）: 163−173.
SONG Yong, YONG Jinjie, LI Shixin, et al. The Startigraphic Record of the Filling Evolution of the Carboniferous Residual Ocean Basin in the West Junggar area[J]. Journal of Stratigraphy,2022,46(2):163−173.
[12] 田亚洲, 杨经绥, 王云鹏, 等. 新疆西准噶尔木哈塔依蛇绿混杂岩年代学和地球化学研究及构造意义[J]. 中国地质, 2015, 42（2）: 379−395. doi: 10.3969/j.issn.1000-3657.2015.02.002
TIAN Yazhou, YANG Jingsui, WANG Yunpeng, et al. Geochronological and geochemical study of the Muhatayi ophiolitic mélange in West Junggar, Xinjiang, and its tectonic implication[J]. Geology in China,2015,42(2):379−395. doi: 10.3969/j.issn.1000-3657.2015.02.002
[13] 王国强, 陈隽璐, 计文化, 等. 西北地区基础地质调查回顾与展望(1962～2022)[J]. 西北地质, 2022, 55（3）: 28−43.
WANG Guoqiang, CHEN Junlu, JI Wenhua, et al. Regional Geological Survey and Research of Northwest China from 1962 to 2022: Review and Prospect[J]. Northwestern Geology,2022,55(3):28−43.
[14] 吴楚, 董连慧, 周刚, 等. 西准噶尔古生代构造单元划分与构造演化[J]. 新疆地质, 2016, 34（3）: 302−311. doi: 10.3969/j.issn.1000-8845.2016.03.002
WU Chu, DONG Lianhui, ZHOU Gang, et al. Paleozoic Tectonic Units and Evolution of Western Junggar, CAOB[J]. Xinjiang Geology,2016,34(3):302−311. doi: 10.3969/j.issn.1000-8845.2016.03.002
[15] 杨高学. 西准噶尔古生代蛇绿混杂岩地质特征及其构造演化[D]. 西安: 长安大学, 2012.
YANG Gaoxue. Geological characteristics and tectonic evolution of the Paleozoic ophiolitic mélange in the West Junggar [D]. Xi’an: Chang'an University, 2012.
[16] 杨晓东. 新疆红柳沟锰矿地质特征与成矿机理研究[J]. 中国锰业, 2016, 34（3）: 19−22.
YANG Xiaodong. Research on Hongliugou Geological Characteristics and Metallogenic Mechanism of Xinjiang Manganese Mine[J]. China's Manganese Industry,2016,34(3):19−22.
[17] 尹继元, 袁超, 王毓婧, 等. 新疆西准噶尔晚古生代大地构造演化的岩浆活动记录[J]. 大地构造与成矿学, 2011, 35（2）: 278−291. doi: 10.3969/j.issn.1001-1552.2011.02.013
YIN Jiyuan, YUAN Chao, WANG Yujing, et al. Magmatic records on the Late Paleozoic Tectonic Evolution of Western Junggar, Xinjiang[J]. Geotectonica et Metallogenia,2011,35(2):278−291. doi: 10.3969/j.issn.1001-1552.2011.02.013
[18] 张洪瑞, 侯增谦. 伊朗扎格罗斯造山带构造演化与成矿[J]. 地质学报, 2015, 89（9）: 1560−1572. doi: 10.3969/j.issn.0001-5717.2015.09.002
ZHANG Hongrui, HOU Zengqian. Tectonic Evolution and Metallogeny of Zagros, Iran[J]. Acta Geologica Sinica,2015,89(9):1560−1572. doi: 10.3969/j.issn.0001-5717.2015.09.002
[19] 张文璟, 王利伟, 晁文迪, 等. 西准噶尔木哈塔依沉积变质型锰矿地质特征及成因研究[J]. 新疆地质, 2023, 41（S1）: 38.
ZHANG Wenjing, WANG Liwei, CHAO Wendi, et al. Geological characteristics and genesis of sedimentary metamorphic manganese deposits in Muhatayi, Western Junggar[J]. Xinjiang Geology,2023,41(S1):38.
[20] Rajabzadeh A M , Haddad F , Polgári M , et al. Investigation on the role of microorganisms in manganese mineralization from Abadeh-Tashk area, Fars Province, southwestern Iran by using petrographic and geochemical data [J]. Ore Geology Reviews, 2017, 80.
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