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福建碧田铜金银矿床中的含银黄铜矿研究 总被引：2，自引：0，他引：2
福建碧田矿床是成因上与燕山晚期次火山岩有关的铜金银矿床。含银黄铜矿产于该矿床的金银矿石和银矿石中。含银黄铜矿呈粒度约０．００４－０．０７ｍｍ的他形粒状与银金矿，金银矿，自然银，辉银矿，黄铜矿，闪锌矿等共生，在空气中极易氧化。含银黄铜矿的银含量变化在１．０４５％－１４．２７３％之间，平均值为４．３７％。与黄铜矿比较，含银黄铜帮中硫含量变化不大，但铁与银有反消长关系。 相似文献
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硫化物矿物标准物的研制 总被引：2，自引：0，他引：2
《岩矿测试》1995,14(2):81-113
研制的黄铁矿、黄铜矿、方铅矿和闪锌矿４个标准物质是国内首次成功研制的硫化物矿物成分分析标准物质，样品采用重选，磁选和电磁选等选矿技术提纯矿物，获得纯度大于９５％的单矿物样品。黄铁矿和闪锌矿用棒磨机少量多级粉碎至０．１４７ＭＭ，方铅矿和黄铜矿用于小型玛瑙球磨机粉碎至０．０９７ＭＭ。经单因素方差分析检验，均匀性符合要求，采用小包装在干燥，充氩气气氛中保存样品，使样品稳定性有足够保证。连续４年定期监测了 相似文献
4.
硫化矿氧化率测定问题的研究：Ⅲ.硫化锌矿中氧化锌的分离测定 总被引：1，自引：0，他引：1
研究了络合剂乙二胺作为分离流化锌矿中锌矿物的选择性溶剂的优越性及其具体应用条件。１０％乙二胺－１０％（ＮＨ４）２ＳＯ４溶液于室温下电磁搅拌浸取，氧化锌矿物的浸取率＞９７％，而闪锌矿等在该溶剂体系中溶解率≤０．２％，具有比较高的选择性。方法已用于实际样品分析。 相似文献
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扬子地块西南缘铅锌矿床Cd、Ge与Ga富集规律初步研究 总被引：7，自引：2，他引：7
扬子地块西南缘分布着大量富含Cd、Ge与Ga的铅锌矿床，已成为我国Pb、Zn及Cd、Ge与Ga矿产资源的重要生产基地。对代表性铅锌矿床进行野外地质调查和系统采样鉴定后．应用电子探针微区分析手段，研究主要矿石矿物闪锌矿、方铅矿和黄铁矿中分散元素的富集特征。结果显示．各类矿床中闪锌矿均相对富集Cd，方铅矿富集Ge与Ga，而黄铁矿中Cd、Ge与Ga的富集系数均相对较低．未呈现出选择性富集的趋势；赋存于震旦纪一寒武纪地层且以脉状、网脉状产出的矿体中闪锌矿的Cd含量明显高于赋存于晚古生代并以层状产出的矿体中闪锌矿的Cd含量。 相似文献
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广东仁化凡口铅锌矿西矿带矿石中主要伴生组分的研究 总被引：2，自引：0，他引：2
谭凤琴 《广东有色金属地质》1995,(1):40-51
本文是笔者研究凡口铅锌矿西矿带矿石中伴生组分的成果。指出方铅矿与闪锌矿不仅是工业利用矿物，而且是伴生元素的载体矿物。银主要赋存在方铅矿中，其次于闪锌矿中，以深红银矿，银黝铜矿等独立矿物产出。闪锌矿是镉、汞、锗、镓等元素的载体矿物，汞以小于０．００２ｍｍ粒度的辰砂形式存在于闪锌矿中。铅、锌、银、镉、汞、锗、镓等元素的含量可作储量计算依据。 相似文献
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乌奴格吐山斑岩铜钼矿床中金属矿物的特征 总被引：4，自引：0，他引：4
乌奴格吐山矿床是一个大型斑岩铜钼矿床。金属矿物中以贯通性矿物黄铁矿含量最多。钼、铜、铅锌三个主要成矿阶段，黄铁矿的平均温度分别为３３１℃、２２８℃、＜２００℃。黄铁矿中Ｃｏ、Ｎｉ、Ａｓ等微量元素特征为成矿物质来源提供了重要信息。辉钼矿是唯一重要的钼矿物，主要赋存在石英－钾长石化带，以２Ｈ型为主。铜矿物有黄铜矿、锌砷黝铜矿、斑铜矿等，以黄铜矿为主，主要赋存在石英－绢云母－水白云母化带。不同世代黄铜矿微量元素的差异反映了成矿溶液的变化。方铅矿、闪锌矿主要赋存于石英－伊利石－水白云母化带。闪锌矿贫铁（ＸＦｅＳ＝４ｍｏｌ％—８ｍｏｌ％），方铅矿含Ａｇ（０．０１％—０．３５％）。 相似文献
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湖南康家湾铅锌金银矿床位于南岭成矿带北部中段,是水口山矿田内发现较晚的大型隐伏矿床.该矿床的矿物组合及矿化特征复杂,前人对其成矿流体特征及成因类型存在不同认识.文章通过野外地质调查和矿物矿相学研究发现该矿床的热液成矿阶段较多,方铅矿主要形成于早期闪锌矿与晚期闪锌矿之间,而金和银的成矿阶段分别与早期闪锌矿和方铅矿趋于一致.电子探针成分分析结果显示早期闪锌矿的含铁量(x(FeS)=9.0％～19.1％)明显高于晚期闪锌矿的(x(FeS)=0.1％～4.0％),与黄铁矿和磁黄铁矿共生的闪锌矿含铁量估算得到的成矿压力值范围为100～146 MPa.早期闪锌矿中流体包裹体的均一温度范围为190～370℃,盐度w(NaCleq)范围为5％～11％,均明显高于晚期闪锌矿.基于矿物组合特征的热力学模拟计算显示早期的成矿流体具有低氧逸度和中酸性的特征,为金的沉淀提供了有利条件.总体上,康家湾矿床的成矿流体演化具有温度和压力由高变低、氧逸度由低变高、pH值由低变高但均为中酸性,金属元素含量由多变少的变化趋势.以上成矿流体特征暗示康家湾矿床具矽卡岩型矿化特征,指示深部存在找矿潜力. 相似文献
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桂阳宝山铅锌银矿中部铅锌矿伴生银赋存特征 总被引：6，自引：0，他引：6
宝山中部沿锌矿属中低温热液充填交代型矿床，伴生银平均品位为２３３ｇ／ｔ。银的主要载体矿物为方铅矿，闪锌矿。银呈独立矿物相为主，（含）银矿物共１２种，为一系列复杂的硫盐矿物。银易于随主金属铅锌一起回收，理想回收率达９３．７７％。 相似文献
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闪锌矿的颜色,成分和硫同位素之间的密切关系 总被引：3，自引：3，他引：3
笔者在研究虎圩金多金属矿床中闪锌矿的颜色时认为其大体可分为两个颜色系列；黑色-紫黑色-桔红色-淡红色系列和黑色-黑褐色-稻草黄色-淡黄色系列。各种颜色为过渡关系。经电子探针分析，各种颜色门锌矿中没发现任何显微包裹体。为了研究方便，本文将闪锌矿划归三种颜色组：黑色、褐色和浅色。在三种颜色组中，黑色门锌矿Cu、Pb、Ag、Au和Fe含量最高，Zn最低，δ34S值最大；浅色闪锌矿相反，Zn含量最高，Cu、Pb、Ag、An和Fe最低，δ34S值最小，褐色闪锌矿居中，δ34S与Zn、Cu、Pb、Ag和Au之间有很好的相关关系，相关系数皆在0．9以上，表明这些元素可能进入闪锌矿晶格。 相似文献
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凤凰县茶田汞矿床汞闪锌矿矿物学特征 总被引：2，自引：0，他引：2
汞闪锌矿在湖南系首次发现,它是闪锌矿中富汞的变种,含汞达19.48％。主要粉晶数据:3. 15(10),1.922(9),1.64(7),1.25(5),1.11(5)。此外,本文还从物理性质,光学性质,反射光谱,颜色指数,化学成份,红外光谱特征等对该矿物进行了较详细的研究。据目前所掌握的资料,是我国所发现的汞闪锌矿中含汞最高者。 相似文献
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Abstract. Skeletal sphalerite with stellar, cruciform and snowflake-like (or cauliflower-like) shapes included in pyrite is widely found in the Dajing tin-polymetallic deposit. It occurs only in chalcopyrite-pyrite mineralization stage. The compositions of all sphalerites in the chalcopyrite-pyrite stage are characterized by high Cu content (3.9 - 7.0 wt% with a mean of 5.4 wt%), while the skeletal crystal sphalerite has higher zinc and cadmium contents, and lower copper and iron contents, compared with other sphalerites of the same stage. The skeletal crystal sphalerite in pyrite is possibly generated by exsolution. 相似文献
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A series of N-arylhydroxamic acids (31) were synthesized and tested as collectors to float sphalerite from a Canadian copper–zinc ore. The compounds were classified into four types namely, N-aryl-C-alkyl, N-aryl-C-aryl, N-aryl-C-aralkyl, and dihydroxamic acids based on the type of substitution. Dihydroxamic acids were found to be poor mineral collectors while the efficiency of sphalerite flotation increased in the order N-aryl-C-aryl < N-aryl-C-alkyl < N-aryl-C-aralkyl. Sphalerite was floated without activation by copper sulfate, and the best sphalerite recovery of about 80% (grade 32%) was achieved with N-hydrocinnamoyl-N-phenylhydroxylamine (HCNPHA) 67 g/t collector dosage. However, pyrite also floated along with sphalerite and this appeared as a major disadvantage to be addressed. 相似文献
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含铁闪锌矿热容与其FeS含量的关系 总被引：1，自引：0，他引：1
本文在利用ＤｕＰｏｎｔ公司的９９００型差式扫描量热仪（９９００ＤｉｆｅｒｅｎｔｉａｌＳｃａｎｎｉｎｇＣａｌｏｒｉｍｅｔｅｒ,简称ＤＳＣ）对７个含铁闪锌矿样品的定压摩尔热容量进行实验测定的基础上,分析了热容与ＦｅＳ含量的关系。１样品特点及实验结果７个含... 相似文献
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本文介绍了运用红外光谱测定闪锌矿中硫化铁分子摩尔百分含量的新方法。这一方法用样量少、简便、迅速,只要测出闪锌矿的红外光谱特征吸收频率,根据公式FeS(mol%)=-0.126+2.162(x-309),或作图,就能容易地获得闪锌矿中硫化铁分子摩尔百分含量。 相似文献
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Compositional variation in Hg-bearing sphalerite from the polymetallic Eskay Creek deposit, British Columbia, Canada 总被引：1，自引：0，他引：1
Tassos A. Grammatikopoulos Oleg Valeyev Tina Roth 《Chemie der Erde / Geochemistry》2006,66(4):307-314
The Eskay Creek, British Columbia, Canada, is a polymetallic, gold- and silver-rich, volcanic-hosted, massive sulfide deposit. The ore in the deposit is divided into subzones distinguished by mineralogy, texture, grade and metallurgical characteristics. This study presents the results of a mineralogical examination of three composite field samples, with emphasis on the chemistry of sphalerite. Sphalerite is associated with variable amounts of Hg-tetrahedrite and cinnabar, and an array of sulfides, sulphosalts and non-opaque minerals. Electron micro probe analyses of sphalerite in the three composite samples reveal wide variations in compositions. The Hg content in sphalerite in the three samples varies between 0.08 and 16.35 wt%, whereas the Fe content ranges from 0.33 to 2.29 wt%. The chemical formula of the sphalerite shows the compositional range (Zn0.89–0.98Hg0.01–0.09.Fe0.005–0.02)S. Sphalerite exhibits an almost perfect substitution of Hg and Zn, as shown by the negative covariance between them. Sphalerite with the highest Hg contents tends to have the lowest Fe concentrations. The highest Hg contents in sphalerite are recorded in the samples with the highest bulk Hg concentrations and with the highest cinnabar contents.
The compositional variations of sphalerite are important because they can be used in mapping ore forming fluids and indicate possible temporal variations. Second, determination of the compositional variation of the sphalerite in the mine has metallurgical implications because the mineral is an important Zn source. The mineralogical data indicate that non-physical processes (e.g. pyrometallurgy) must be used to separate Hg from Zn concentrates, with direct environmental implications, that is, release of metals, such as Hg, into the environment during mining and processing. 相似文献
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闪锌矿的吸收光谱和颜色的本质 总被引：1，自引：0，他引：1
本文采用电子吸收光谱和分子轨道（MO）－能带理论模型，系统地研究了不同颜色的闪锌矿呈色的机理和本质。闪锌矿由于其形成条件不同，所含杂质元素各异而颜色变化。黑色闪锌矿含Fe高，其颜色是由于以配位体硫为特征的非键轨道2e到Fe^2 的晶体场型轨道的电子转移在500nm产生吸收所致。只有闪锌矿含Fe低（＜1％）时，它才可具有其他颜色，黄色与受主能级Cu^ 到导带或价带到施主能级Ga^3 的电子跃迁在410nm产生吸收有关；绿色是Co^2 的晶体场跃迁^4A2→^4T2(P)在700nm附近产生的吸收峰所致；红色可能与受主能级Hg^ 到施主能级Ga^3 的电子跃迁在470nm产生宽吸收带有关。当闪锌矿的吸收光谱有其中两个吸收带叠加时，它具有过渡的颜色，如黄绿色或绿黄色、桔黄色或桔红色，主要色调取决于两个吸收带的相对强度。 相似文献
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Sphalerite in the Niujiaotang Cd-rich zinc deposit, Duyun, Guizhou is characteristically light-yellow in color with significant
enrichment of cadmium which ranges from 0.83% to 1.97% (averaging 1.38%) in concentration in the mineral, corresponding to
an enrichment coefficient as high as 30. 47 to 72. 96. In comparison with other major Pb−Zn deposits in the world (the Mississippi
Valley deposits, and the Fankou and Jinding deposits in China) the Niujiaotang deposit isn
−
n×10 times richer in cadmium. Sphalerite in the deposit is also rich in Ga and Ge, but poor in In, Mn and Fe, suggesting some
special mechanisms that govern the geochemical behavior of these trace elements. Except for a minor amount of independent
minerals like greenockite, cadmium occurs mainly as isomorphous impurity in the crystal lattice of sphalerite. During weathering
and leaching under supergene condition, cadmium was separated from Zn, resulting in some secondary minerals of Cd, including
oxides and otavite.
This project was jointly supported by the National Natural Science Foundation of China (No. 496-33110) and the Laboratory
Foundation of Ore Deposit Geochemistry of Chinese Academy of Sciences. 相似文献
19.
本文研究了产于河北大湾锌矿床中的硫锰矿,探讨了硫锰矿与闪锌矿的成因关系。由实验结果而认为大湾硫锰矿是从深色高锰闪锌矿中出溶而成的。 相似文献
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Abstract: Raman frequency of some materials, including minerals, molecules and ions, shifts systematically with changing pressure and temperature. This property is often used as a pressure gauge in high pressure experiments with the hydrothermal diamond anvil cell (HDAC). Since the system of fluid inclusion is similar to that of HDAC, it can also be used to determine the internal pressure of fluid inclusions. Sphalerite is a common daughter mineral. In this study, the frequency shift of the 350 cm?1 peak of sphalerite has been studied from 296 to 523 K and from 0.07 to 2.00 GPa using the HDAC. The global slope of the isotherms (?n350/?p)T is 0.0048 in the studied pressure range. No significant variation of the slopes with temperature has been observed. The correlation between the frequency shift of the 350 cm?1 peak of sphalerite and pressure and temperature is constrained as P=208.33(?np)350+3.13T?943.75. This relationship may be used to estimate the internal pressure of the sphalerite-bearing fluid inclusions. 相似文献