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1.
黄沙坪铅锌矿床中银矿化组合特征 总被引：6，自引：0，他引：6
研究黄沙坪铅锌矿床中银矿化组合表明：与３０１花岗斑岩和３０４花斑岩岩体有关铅（锌）－银－锡－锑矿化组合，银矿化伴随铅矿化出现，其微量元素富Ｓｎ、Ｓｂ、Ａｇ，低Ｂｉ、Ｔｅ、Ｍｏ、Ｗｏ、Ｗ为特征；银矿物组合以硫银锡矿－银黄锡矿－深红银矿－螺状硫银矿－硫锑铜银矿组合为特征，与石英斑岩有关的铜（钼）－银－碲矿化组合，铜矿石以高Ｔｅ、Ｂｉ、Ｍｏ和Ｗ，低Ｓｂ为特征，银矿物组合以碲银矿－六方碲银矿－粒碲银组合和硫银铋矿－块辉铋铅银矿－碲银矿组合为特征 相似文献
2.
东珺矿床是近年在内蒙古额尔古纳地区陆相火山岩系内新发现的一处脉状Pb-Zn-Ag矿床,其以富含多量Ag及微量Au为特征。在野外考察的基础上,本文以电子探针、能谱-扫描电镜及多项光谱分析等方法查明了其矿石中Au、Ag的赋存状态及矿物组成,其主要矿物包括辉银矿、火硫锑银矿、黝锑银矿、深红银矿、硫锑铜银矿及脆银矿。除此,还发现了一些罕见的矿物,如碲铋矿、硫锑铜矿的锌变种、针硫铋铅矿、库辉铋铜铅矿以及某些未知的Pb-Bi相金属矿物。为了估算本矿床的成矿温度,着重对矿床中的银锑黝铜矿系列的组成做了分析,并将其Ag/(Ag+Cu)及Zn/(Zn+Fe)数值投至Sack等温曲线图上,由其结果可判断出本矿床应属于浅成低温成因,而深部矿体中碲铋矿及无Ag硫盐的出现亦可视为一重要旁证。东珺矿床丰富的银矿物及其粗大粒度对于矿山工艺流程选定以及开发利用将会大有裨益,而本矿床Au含量过低,仅具有地球化学的理论意义。 相似文献
3.
吉林小西南岔金铜矿床的金属矿物及矿石特征。 总被引：3，自引：0，他引：3
小西南岔矿床是与燕山期花岗岩有关的斑岩矿床，以金、铜为主，伴有银、铋矿化。金属硫化物主要是黄铁矿、毒砂、磁黄铁矿、黄铜矿。金矿物是金－银系列的自然金、银金矿及金银矿。金的成色低，平均成色７２８，且变化在３０５～９９３这一较大范围内。另外，还发现了碲银矿、硫碲银铋铅矿、自然铋、赫啼铋矿、富硫铋铅矿等多种银、铋矿物。成矿早期只有微弱的铜（钼）矿化，大量金和铜富集于成矿中期（２１０～４７５℃），而银、铋矿化则出现在成矿作用晚期（１６０～２４０℃）。 相似文献
4.
胶东牟平-乳山金矿带金青顶金矿碲化物矿物的特征及沉淀机制 总被引：7，自引：0，他引：7
通过光学显微镜、电子显微镜并结合能谱分析,在金青顶金矿Ⅱ号矿脉深部除含碲化物碲银矿、碲金银矿和碲铋矿外,首次发现碲金矿的存在,进一步证实了前人对于该矿床中存在碲金矿这一新矿物的推测,也打破了该金矿深部无碲金银矿的传统认识。这些碲化物呈连生体或者细脉状产于黄铁矿等硫化物、石英与黄铁矿裂隙中。在金银碲化物矿物中,Te含量变化较小,Au含量变化较大,与Ag呈负相关,与Bi为正相关。结合金-银-碲矿物成分-共生图解,对金银碲化物矿物的共生组合特征进行了研究。研究表明,Te总是优先与Ag结合形成碲银矿或碲金银矿,只有热液中Ag被消耗后才与Au结合形成碲金矿,最后Te被耗尽,矿液中残留很多的Au,从而形成自然金,说明随着成矿过程的演化,成矿热液可能逐渐富金,具体表现为碲银矿-碲金银矿-碲金矿-自然金的析出顺序。 相似文献
5.
西藏谢通门县雄村斑岩型铜金矿床成因讨论——来自元素的空间分布特征的证据 总被引：6，自引：0，他引：6
西藏谢通门县雄村铜金矿的成矿与含眼球状石英斑晶的角闪石英闪长玢岩有关,并至少受3个玢岩岩枝控制。主成矿元素为Cu,伴生元素为Au、Ag、Zn、Pb,其他微量元素Mo、As、Ba、Bi、Cd、Co、Mn、Ni、Sb含量较高。元素在垂向上具有分带特征,即从矿体中心向外可依次划分为Cu、Au、Ag、As、Sb、(Bi)→Co、Ni→Mo→Mn→Ba→Pb、Zn、Cd、Bi、(Sb),上述元素的异常和组合是寻找和评价该类矿床的重要地球化学标志。矿床的形成经历了早期Cu—Au—Ag成矿和晚期Zn—Pb—Cu—Au—Ag成矿两个阶段:早期成矿阶段形成了Cu—Au—Ag主矿体,晚期叠加Zn—Pb—Cu—Au—Ag矿化。Cu与Au、Ag呈显著的正相关,Cu主要呈独立矿物黄铜矿产出,Au、Ag主要赋存于黄铜矿中。矿石的K/Na值为6.9、Rb/Sr值为0.8,显示出矿床矿富K、Sr和贫Na、Rb的成矿环境;而Au(平均品位0.6×10-6)0.4×10-6、Au(0.6×10-6)/Cu(0.4%)1和n(Cu)/n(Au)(为20678)40000以及Mo(19.7×10-6),说明该矿床富金而贫钼。矿床所处的大地构造位置,成矿与偏中性的斑岩有关,元素组合特征,异常元素在垂向上的分带特征,主成矿阶段的Cu—Au—Ag矿化和晚期叠加的Zn—Pb—Cu—Au—Ag矿化,富Cu、Au、Ag和贫Mo的成矿元素组合及富K、Sr和贫Na、Rb的成矿环境,均表明矿床具有产于岛弧或类似岛弧环境的斑岩型铜金矿床的特征且叠加斑岩成矿系统晚期呈脉状产出的浅成低温热液型Zn—Pb—Cu—Au—Ag矿化。 相似文献
6.
福建碧田铜金银矿床中硫盐矿物及钨锡硫化物研究 总被引：6，自引：0，他引：6
福建碧田矿床成因上是与燕山晚期次火山岩有关的、以银为主的大型铜金银矿床。该矿床产于燕山早期花岗岩中,在其铜矿石内发现了较多的锌砷黝铜矿、铋砷黝铜矿、铋锑黝铜矿、碲砷黝铜矿、针硫铋铅矿、硫铋铜矿、硫砷铜矿等硫盐矿物及少见的钨锡硫化物——硫锡铁铜矿、硫铁锡铜矿和硫钨锡铜矿。这些矿物形成于成矿作用早期的黄铜矿-斑铜矿-黄铁矿阶段。成矿温度在260～380℃之间,最低成矿压力20～40 MPa,硫逸度(lgfs_2)=-8.74～-12.06。钨锡铋矿物的发现表明,燕山早期花岗岩可能为成矿提供了部分物质来源。 相似文献
7.
《矿物岩石》2017,(1)
利用扫描电镜结合能谱分析技术以及电子探针分析技术,针对四川甘孜江浪矿田里伍铜矿床和黑牛洞铜矿床中伴生金元素的赋存状态进行分析。结果表明:金分布在两个矿床的致密块状矿石、角砾状矿石、条带状-网脉状矿石及黑色电气石黄铜矿矿石中,围岩中不含Au。且Au在矿石中质量分数变化大,其范围为0.1×10~(-6)~5.5×10~(-6)。Au以独立矿物银金矿和金银矿的形式赋存。银金矿颗粒较大,仅在里伍铜矿床的尾矿中发现,约90μm,银金矿中金含量为68.12%~70.79%。金银矿的粒径变化范围大,为:0.01μm~25μm,金银矿中金的含量范围大,为:5.14%~40.81%。金银矿在矿石中的赋存状态主要为以下3种:(1)与铋矿物(自然铋和铋银矿)共生;(2)包裹在金属硫化物中或嵌布在金属硫化物的粒间;(3)沿金属硫化物粒间充填。第一种金银矿的形成主要经历了温度高于400℃的体系,成矿流体中的Au,Bi均以氯络合物的形式运移,在温度降低的过程中,Au和Bi同时沉淀,从而形成金银矿与铋矿物的共生结构;第二种金银矿为温度降低过程中,随着硫化物的沉淀,Au-S络合物分解,使得Au沉淀;第三种金银矿应为主成矿期后的含Au,Ag的热液充填裂隙沉淀成矿的产物。 相似文献
8.
西藏铁格隆南斑岩-高硫型浅成低温热液矿床主要矿石矿物特征 总被引：2，自引：0，他引：2
铁格隆南矿床位于班公湖—怒江成矿带西段多龙矿集区,是青藏高原发现的首例具有典型高硫型浅成低温热液矿化特征的超大型Cu(Au、Ag)矿床。本文通过大量的钻孔岩矿心地质编录,结合矿相学及电子探针分析,查明铁格隆南矿床的矿石矿物以原生硫化物为主,主要是斑铜矿、黄铜矿等Cu-Fe-S体系矿物、硫砷铜矿、砷黝铜矿等Cu-As-S体系矿物和以铜蓝和蓝辉铜矿为代表的Cu-S二元体系矿物,以及少量辉钼矿、方铅矿、闪锌矿,微量硫锡砷铜矿等。从矿石矿物组合特征可看出,铁格隆南矿床是高硫型矿化叠加于斑岩型矿化之上复合成矿的典型实例,矿床深部具有进一步扩大斑岩铜矿规模的巨大潜力,是下一步获取更多资源量的重点勘查方向。 相似文献
9.
内蒙古大井矿床中银矿物的研究 总被引：1，自引：0，他引：1
本文总结了内蒙古大井矿床中银矿物的类型，产出特征以及矿物命名的问题，详细描述了黝铜矿族，浓红银矿，脆银矿，自然银以及含银的铅－铋（锑）硫盐类矿物等主要银矿物的产出状态和化学成分特征，并讨论了相应的形成条件，同时指出本区银矿物主要形成于两个矿化阶段，即：早期黄铜矿－黄铁矿阶段，主要形成了黝铜矿族的含银矿物以及辉锑银矿，硫锑铜银矿等含铜的硫盐类矿物，晚期方铅矿－闪锌矿阶段，形成的银矿物种类较为繁杂，除形成黝铜矿族矿物外，多数含铅，铋的硫盐矿物以及自然银、硫化物和浓红银矿、脆银矿等无铜的简单硫盐等均是在这一阶段形成。 相似文献
10.
广西河池银多金属矿床,是近年内我国探明的大型银多金属矿床。矿床赋存于中泥盆统泥岩中。矿体呈脉状产出。矿物组合主要地是脆硫锑铅矿、闪锌矿、方铅矿、辉锑矿、银锑黝铜矿、方锑金矿、菱铁矿、菱锰矿等.矿石构造有角砾状、脉状和浸染状,矿石结构有自形晶、半自形晶、辉锑矿楔形压力双晶结构等。根据矿物共生组合、气液包裹体研究和温度测定等将矿床划分成四个主要的矿化阶段。矿床中主要的有用元素是Ag、Sb、Pb、Zn,伴生有Au、Cd。银矿物是银锑黝铜矿,金矿物是方锑金矿。矿床的形成条件是温度290—68℃,PH值7.24—9.17,Eh值-这0.432—-0.406,fs_2-34.97—-30.09。矿化受地层和构造控制,矿质来自围岩和地下热卤水,其成因属地下热卤水层控矿床。 相似文献
11.
《China Geology》2023,6(1):100-136
The reserves of the Duobaoshan porphyry Cu-Au-Mo-Ag deposit (also referred to as the Duobaoshan porphyry Cu deposit) ranks first among the copper deposits in China and 33rd among the porphyry copper deposits in the world. It has proven resources of copper (Cu), molybdenum (Mo), gold (Au), and silver (Ag) of 2.28×106 t, 80×103 t, 73 t, and 1046 t, respectively. The major characteristics of the Duobaoshan porphyry Cu deposit are as follows. It is located in a zone sandwiched by the Siberian, North China, and paleo-Pacific plates in an island arc tectonic setting and was formed by the Paleozoic mineralization and the Mesozoic mineralization induced by superposition and transformation. The metallogenic porphyries are the Middle Hercynian granodiorite porphyries. The alterations of surrounding rocks are distributed in a ring form. With silicified porphyries at the center, the alteration zones of K-feldspar, biotite, sericite, and propylite occur from inside to outside. This deposit is composed of 215 ore bodies (including 14 major ore bodies) in four mineralized zones. Ore body No. X in the No. 3 mineralized zone has the largest resource reserves, accounting for more than 78% of the total reserves of the deposit. Major ore components include Cu, Mo, Au, Ag, Se, and Ga, which have an average content of 0.46%, 0.015%, 0.16 g/t, 1.22 g/t, 0.0003%, and 0.001%–0.003%, respectively. The ore minerals of this deposit primarily include pyrite, chalcopyrite, bornite, and molybdenite, followed by magnetite, hematite, rutile, gelenite, and sphalerite. The ore-forming fluids of this deposit were magmatic water in the early metallogenic stage and then the mixture of meteoric water and magmatic water at the late metallogenic stage. The ore-forming fluids experienced three stages. The ore-forming fluids of stage I had a hydrochemical type of H2O-CO2-NaCl, an ore-forming temperature of 375–650°C, and ore-forming pressure of 110–160 MPa. The ore-forming fluids of stage II had a hydrochemical type of H2O-CO2-NaCl, an ore-forming temperature of 310–350°C, and ore-forming pressure of 58–80 MPa. The ore-forming fluids of stage III had a hydrochemical type of NaCl-H2O, an ore-forming temperature of 210–290°C, and ore-forming pressure of 5–12 MPa. The Cu-Au-Mo-Ag mineralization mainly occurred at stages I and II, with the ore-forming materials having a mixed crust-mantle source. The Duobaoshan porphyry Cu deposit was formed in the initial subduction environment of the Paleo-Asian Ocean Plate during the Early Ordovician. Then, due to the closure of the Mongol-Okhotsk Ocean and the subduction and compression of the Paleo-Pacific Ocean, a composite orogenic metallogenic model of the deposit was formed. In other words, it is a porphyry - epithermal copper-gold polymetallic mineralization system of composite orogeny consisting of Paleozoic island arcs and Mesozoic orogeny and extension.©2023 China Geology Editorial Office. 相似文献
12.
Shoji Kojima María Constanza San Martín Toshiro Nagase Daisuke Nakashima Claudio Bisso Andrew Menzies 《Resource Geology》2021,71(1):80-90
Modes of occurrence of Au‐ and Ag‐bearing phases and their relation with associated hypogene ore minerals were examined with the objective to elucidate Au‐Ag distribution at the Esperanza porphyry deposit in the Eocene Centinela copper belt, using ore‐microscope modal analysis, semi‐quantitative analyses by automated mineralogy, electron probe microanalysis, and secondary ion mass spectrometer. The Esperanza hypogene mineralization is characterized by early‐stage chalcopyrite‐rich veinlets in the potassic alteration zone and later polymetallic stage with tennantite and galena in the chlorite‐sericitic alteration zone. Only the early‐stage chalcopyrite contains fine‐grained electrum (Au68Ag32 ‐ Au81Ag19) and hessite (Ag2Te), and thus yields positive correlations in Cu vs. Au and Cu vs. Ag grades that are clearly recognized in the hypogene sulfide zone. The early‐stage chalcopyrite grains frequently exhibit polysynthetic twinning suggestive of inversion from intermediate solid solution. These features suggest that the fine‐grained electrum and hessite are products exsolved in the cooling process with the intermediate solid solution to chalcopyrite inversion. In contrast, tennantite and galena of the later‐stage mineralization contain no detectable Ag, and it is thus proposed that the early‐stage inverted chalcopyrite is the principal storage of economically important precious metals. 相似文献
13.
桂西那弱银金矿床矿物组合特征及银和金的赋存状态研究 总被引：2，自引：1，他引：1
广西天峨那弱银金矿床以银矿为主,共/伴生金及铅、锌、锑等金属,矿物组合在右江盆地内为首次发现。矿体受那弱背斜及其轴向断层控制,赋矿层位为中三叠统百逢组含钙质浊积岩系。矿石矿物以硫锑铅矿、铁闪锌矿、黄铁矿、毒砂和方铅矿为主;脉石矿物主要有石英、方解石、绢云母等。主要矿石矿物由早到晚的生成顺序为:毒砂→黄铁矿→铁闪锌矿→硫锑铅矿→方铅矿。单矿物化学分析显示硫锑铅矿含Ag最高,其次为闪锌矿;黄铁矿含Au相对较高。EPMA测试结果表明Ag于方铅矿中含量最高,其次为硫锑铅矿;主要矿石矿物中毒砂含Au相对较高,其余矿物中Au含量均偏低。因矿石中的铅矿物主要为硫锑铅矿,可以认为那弱银金矿床的Ag主要赋存于硫锑铅矿中,Au主要赋存于毒砂与黄铁矿中,二者均以显微-次显微状态赋存于载体矿物中。根据矿物组合及其相互交代、切割关系等特征,将矿床划分为2个成矿期共4个成矿阶段。其中,第一成矿期为金的成矿期,矿物组合为黄铁矿和毒砂,由于后期成矿作用的叠加,仅保留一个成矿阶段;第二成矿期为银铅锌成矿期,矿物组合为方铅矿-闪锌矿-硫锑铅矿;包含第二至第四共3个完整的成矿阶段。该矿床Ag、Au共生是不同期次成矿作用叠加的结果。 相似文献
14.
岭壳铜(银-金)矿床赋存于白垩纪岭壳村组流纹质角砾凝灰熔岩和早白垩世花岗闪长岩中.目前已发现11条铜(银-金)矿(化)体,矿体的产出严格受断裂破碎带控制,与成矿关系密切的围岩蚀变呈现出自东(20线)向西的钾化→绢云母化→强高岭石化、绿泥石化蚀变分带,矿化相应呈现从铜(金)向铜(银)的过渡.根据其对称性的蚀变分带,应加强20线以东的地质找矿;根据成矿元素分形和统计研究发现,Au,Ag矿化具有专属性,即在流纹质凝灰熔岩中寻找Cu,Ag矿,而在花岗闪长岩中以寻找Cu,Au矿为主. 相似文献
15.
西藏弄如日金矿是冈底斯成矿带发现的第一个浅成低温热液型金矿床。为确定金矿床的成矿时代,对该矿床与金矿化有关的蚀变花岗斑岩中绢云母进行了40Ar-39Ar年龄测试,获得绢云母的加权平均年龄和等时线年龄分别为19.87±0.96Ma和19.70±0.30Ma。结果表明,弄如日金矿床金矿化的主要成矿时代为中新世。该成果的获得对于进一步认识弄如日金矿成因机制、地球动力学背景以及区域找金突破具有重要意义。 相似文献
16.
对含碲金矿中碲化物物相组成和元素赋存特征开展系统的研究,有助于对此类金矿矿床成因的理解和找矿勘查工作。山东金青顶金矿床伴生的碲化物由于碲化物颗粒较小,不易被发现,以往的研究缺乏对碲化物元素分布的精细刻画。本文通过电子探针背散射图像、波谱分析、能谱分析结合面扫描技术对金青顶金矿床碲化物进行了分析,研究碲化物的种类、共生关系、化学成分以及元素分布特征等。结果表明:碲金银矿与碲银矿密切共生,常形成连生体,Au、Ag在连生体中不均匀分布,面扫描图局部可见碲金矿亮斑;Te总是优先和Ag结合,生成碲银矿,随着Ag的消耗碲金银矿开始出现,Ag被耗尽后Te与Au生成碲金矿,成矿后期热液中多余的金与碲金银矿或碲银矿反应生成非常规碲化物(如本文发现的Ag2.95Au1.83Te),当Te消耗完后生成自然金;金银矿物的生长顺序是碲银矿—碲金银矿—碲金矿—自然金。本研究为含碲金矿的综合利用提供了技术支持。 相似文献
17.
V. Yu. Prokof’ev L. D. Zorina V. A. Kovalenker N. N. Akinfiev I. A. Baksheev A. N. Krasnov G. A. Yurgenson N. V. Trubkin 《Geology of Ore Deposits》2007,49(1):31-68
The mineral composition of the Talatui gold deposit has been studied with modern methods. Previously unknown minerals (ilmenite, siegenite, glaucodot, wittichenite, matildite, hessite, pilsenite, zircon, tremolite, cummingtonite, hercynite, and goethite) have been identified in the ore. A high Re content has been detected in molybdenite. The spatiotemporal separation of Au and Ag is caused by different mineral species of these elements and their diachronous precipitation during the ore-forming process. Gold crystallized along with early mineral assemblages, beginning from virtually pure gold (the fineness is 996). Silver precipitated largely at the end of the process as hessite (Ag2Te) and matildite (AgBiS2). The temperature of ore deposition varied from 610 to 145°C, the pressure was 3370–110 bar, and the salt concentration ranged from 56.3 to 0.4 wt % NaCl equiv. The heterogeneous state (boiling) of fluid at the early stages has been documented. The chemical and isotopic compositions of the fluid testify to its magmatic nature and the participation of meteoric water at late stages in the ore-forming process. Thermodynamic modeling reproduces the main specific features of ore formation, including separation of Au and Ag. A physicochemical model of the gold mineralization in the Darasun ore district has been proposed. On the basis of several attributes, the Talatui deposit has been referred to the prophyry gold-copper economic type. 相似文献
18.
Geochemical Characteristics and Zonation of Primary Halos of Pulang Porphyry Copper Deposit,Northwestern Yunnan Province,Southwestern China 总被引：6，自引：0，他引：6
The Pulang (普朗) porphyry copper deposit, located in the southern segment of the Yidun-Zhongdian (义敦-为中甸) island arc ore-forming belt of the Tethys-Himalaya ore-forming domain, is a recently discovered large copper deposit. Compared with the composition of granodiorite in China, the porphyry rocks in this area are enriched in W, Mo, Cu, Au, As, Sb, F, V, and Na2O (K1≥1.2). Compared with the composition of fresh porphyry rocks in this district, the mineralized rocks are enriched in Cn, Au, Ag, Mo, Pb, Zn, W, As, Sb, and K2O (K≥1.2). Some elements show clear anomalies, such as Zn, Ag, Cu, Au, W, and Mo, and can be regarded as pathfinders for prospecting new ore bodies in depth. It has been inferred from factor analysis that the Pulang porphyry copper deposit may have undergone the multiple stages of alteration and mineralization: (a) Cu-Au mineralization; (b) W-Mo mineralization; and (c) silicification and potassic metasomatism in the whole ore-forming process. A detailed zonation sequence of indicator elements is obtained using the variability index of indicator elements as follows: Zn→Ag→Cu→Au→W→Mo. According to this zonation, an index such as (Ag×Zn) D/(Mo×W) D can be constructed and regarded as a significant criterion for predicting the Cu potential at a particular depth. 相似文献
19.
通过化探、槽探和平硐等手段，对位于冈底斯成矿带东段的弄如日金矿床进行了评价和研究，在矿区发现金矿化带4条，圈出金矿体5个，控制2．3g／t品位以上的金资源量（333＋3341）为2．97t，确定该矿床属典型的浅成中低温热液型金矿床。矿区的金矿体赋存于破碎蚀变角岩和蚀变二长花岗斑岩中，受南北向正断裂系统的控制，矿化以金为主，伴有辉锑矿、雄黄、黄铁矿等矿物，可分为浅成低温热液和表生氧化2个成矿期，金可能以独立的自然金状态存在于脉石矿物的粒问或裂隙中。弄如日金矿床形成于伸展构造背景，在空间上居斑岩铜矿床外围，成矿时代为中新世一上新世，与冈底斯斑岩型铜钼矿床及其外围的矽卡岩型铅锌矿床的成矿时代基本一致，说明三者受统一的成矿作用制约，属斑岩岩浆一热液成矿系统中的浅成低温热液型金锑矿床。 相似文献
20.
枪口南银多金属矿床地处东昆仑多金属成矿带东段,枪口—哈龙休玛海西-燕山期铁、银、铅、锌、铜、金、钼成矿亚带部分,成矿地质条件优越。枪口南银多金属矿区目前已圈定9条矿化带,21个矿体,主要矿种有金、银、铜、铅、锌、钼等,矿石类型主要为构造热液(脉)型铜铅锌银矿石、构造蚀变岩型金矿石。枪口南矿区构造-岩浆活动强烈,印支期—燕山期构造岩浆活动为矿区成矿提供了热源、成矿物质,区内NE向断裂控制区内金、铜、铅锌等矿体的产出,NW向断裂组控制着区内金、银矿(化)体。NW向断裂组,是区内重要控矿构造;区内中部发现的Ⅳ号含矿斑岩体,具有斑岩型矿床蚀变特征,显示其具有斑岩成矿条件。枪口南银多金属矿床成因有构造热液(脉)型、构造蚀变岩型和斑岩型。 相似文献