MANTLE SOURCE NATURE OF ORE FLUIDS FOR THE JINDING Pb-Zn DEPOSIT, LANPING, YUNNAN

Geological setting\;Jinding superlarge Pb\|Zn deposit lies in the Lanping basin between the Lancangjiang fracture zone and the Jinshajiang\|Ailaoshan fracture zone. The Lanping basin is a Meso\|Cenozoic rifting basin whose basement consists of the Paleozoic strata. Mesozoic paralic and continental sediments with a thickness of about 20000m deposited in the basin. In the Paleocene, gypsum\|salt\|bearing strata with a thickness of more than 1000m accumulated. In the Cenozoic, collision of the Indian plate with the Eurasian plate resulted in strong folding and napping and subsequent extensions in the Oligocene and Pliocene. The extensions were responsible for alkaline magmatic intrusion in the centre and alkaline magmatic extrusion in the east.Faulting is well developed. N\|S\|trending Bijiang fault with a length of 120km links with the Jinshajiang fracture zone in the north and with the Lancangjiang fracture zone in the south, controlling on the Cenozoic Lanping rifting basin and acting as passage\|way for ore fluids.

Relationship Between Organic Matters and Zn-Pb Mineralization in the Giant Jinding Zn-Pb Deposit,SW China

The Jinding Zn-Pb deposit,Yunnan Province, southwestern China,represents the youngest,only continental sediment-hosted giant Zn-Pb deposit in the world.Various kinds of organic matters,such as the kerogen,light-and heavy-oil,hydrocarbon gas, bitumen of different occurrences and maturation,have been observed in recent underground and open pit mining.Oil-gas traces and oil-and methane-in-

Fractal Modeling of Sphalerite Banding in Jinding Pb-Zn Deposit, Yunnan, Southwestern China

Sphalerite banding is a common texture in Jinding （金顶） Pb-Zn deposit, Yunnan （云南）, southwestern China. The frequency distribution and irregularity of sphalerite grains observed in the bandings are characterized quantitatively by fractal models. Fractal dimensions calculated by several fractal models including box-counting model, perimeter-area （P-A） model, and number-area （N-A） model show the gradual change from outer banding to inner banding, indicating a decrease in area percentage, in irregularity, in shape and in grain size, and an increase in the numbers of grains. These results may imply an inward growth of sphalerite during mineralization, and self-organization properties are involved in the nonlinear process of mineralization.

Groundwater Quality Analysis of Safidon and Julana Blocks of District Jind, Haryana, India

We present an extensive investigation of physico-chemical parameters of water samples of Julana and Safidon blocks of District Jind, Haryana, India. Water samples were collected from different localities in cleaned polythene bottles and were analyzed for the different physico-chemical parameters like pH, electrical conductivity, total dissolved solids (TDS), total hardness (TH), calcium, magnesium, total alkalinity (TA), carbonate, bicarbonate, sodium, potassium, chloride, sulphate and fluoride. The analyzed parameters were compared with the standard desirable limits prescribed by World Health Organization (WHO), Bureau of Indian Standard (BIS) and Indian Council of Medical Research (ICMR) standards of drinking water quality parameters. For the identification of the highly correlated and interrelated water quality parameters, the correlation coefficients were calculated between different parameters and the t-test was applied for checking significance. The results showed significant variations in water quality parameters in the study areas.

REE Geochemistry of the Lead-Zinc Ores from the Jinding Lead-Zinc Deposit, Lanping, Yunnan

Nineteen volcanic and magmatic rock samples were collected from the Jinding lead-zinc deposit and its surrounding areas in Yunnan. The ICP and AES analyses, referred to the previous results, show that the metal minerals and altered rocks in the Jinding lead-zinc deposit display a decreasing trend of ΣREE from the early to late stages of mineralization, and similarities in REE distribution patterns, indicating that the ore fluids are characterized by high LREE enrichment, markedly negative δCe anomaly and slight δEu anomaly. These REE distribution patterns exhibit striking similarities to those of the Pliocene trachyte in the study area, both of which are similar in ΣREE, LREE/HREE ratio, δEu and δCe. The ore fluids besides the basin fluids in the deposit are also closely related to those associated with Pliocene trachyte magmas.

A study on the distribution characteristics and existing states of cadmium in the Jinding Pb-Zn deposit,Yunnan Province,China

The distribution characteristics and existing state of cadmium in the Jinding Pb-Zn deposit were studied. It was discovered that Cd was mainly distributed in sphalerite as an isomorphic impurity. There was a good correlation between Cd and Zn in the primary ore. With the oxidation and resolution of pyrite, sphalerite, sulfide, and etc., many secondary minerals, such as colloform sphalerite and smithsonite, were formed. The distribution of Cd is not symmetrical, and enrichment and dilution were observed in partial area of the oxidation zone in the deposit. Cd, except in external pore space or cracks of secondary minerals as independent minerals, such as greenockite, was mainly distributed in sphalerite as an isomorphic impurity in the secondary sphalerate and smithsonite in the oxidation zone. The research showed that Cd showed a very strong active transfer ability in the oxidation process, not only indicating that supergene leaching might be the main reason for Cd enrichment in some Pb-Zn deposits, but also reflecting that Cd was easily mobilizeed and transferred to pollute ore areas in the oxidation process. Furthermore, Cd in oxidation ore was more easily mobilized and transferred to induce bad hazards for ore areas with the effect from AMD which was produced from oxidation of sulfides.

Geochemistry and environmental effect of cadmium in the super-large Jinding Pb-Zn deposit,Yunnan Province, China

The Jinding Pb-Zn deposit in Yunnan Province is the representative of a Cd-enriched area and mining activities lead to the release of Cd into the hypergenic ecosystem, resulting in Cd pollution. The concentrations of Cd vary greatly from one type to another type of rocks in the mining district. In the host rock, Cd concentrations range from 50×10-6 to 650×10-6 with an average of 310×10-6. In primary ores, Cd concentrations range from 14×10-6 to 2800×10-6 with an average of 767×10-6. However, in oxidized ores, Cd concentrations are highest, varying within the range of 110×10-6 to 8200×10-6 , averaging 1661×10-6. It is shown that the oxidized ores are the main carrier and environmental source of Cd. Leaching test showed that Pb/Zn ores are easy to oxidize and thereafter release Cd and other harmful elements. These leached elements in the leachate may be precipitated rapidly in the order of Zn>Pb>Cd. As for the concentration distribution of Cd in the Bijiang River, it is estimated to be 15.7 μg/L Cd in water, 49.3 mg/L in suspended substances, and 203.7 mg/L in sediments. The average value of Cd in soil from the polluted area is 83.0 mg/kg. Natural weathering of Cd-rich rocks and minerals imposes a potential environmental risk on the aquatic ecosystem of the Bijiang catchment.

金定鸭不同养殖模式生产性能的比较分析

研究旨在比较分析金定鸭在笼养和地面平养饲养模式下的生产性能,为评价不同养殖模式下的蛋鸭生产性能提供参考依据。12周龄时,将600羽金定鸭分成2种模式饲养,其中300羽上笼饲养,其余300羽金定鸭为半开放式地面平养。饲养观察测定至72周龄。结果表明,笼养模式下金定鸭的开产日龄132.91 d、43周龄产蛋数149.26枚、72周龄产蛋数321.30枚、总蛋重23.74 kg,均分别优于地面平养模式的开产日龄139.63 d、43周龄产蛋数143.49枚、72周龄产蛋数308.63枚、总蛋重22.43kg;此外,蛋品质测定结果显示,笼养和地面平养的蛋品质没有显著差异。以上结果表明,金定鸭采用笼养模式较平养模式能获得更好的产蛋性能,适宜笼养。

滇西兰坪金顶超大型铅锌矿床围岩微量元素地球化学特征及其意义

滇西兰坪盆地是三江成矿带的重要组成部分,金顶铅锌矿是区内重要的超大型矿床。为了查明金顶超大型铅锌矿床的成矿物质来源,对金顶矿区围岩样品进行微量元素地球化学分析。结果显示,稀土总量接近大陆上地壳的平均稀土元素总量值,轻稀土元素相对富集、重稀土元素相对亏损,呈明显的右倾型,具有显著的Eu负异常。微量元素特征显示Cu的平均含量为24.4×10^(-6),未发生明显富集迁移。Pb、Zn平均含量随矿体距离远近变化较大(Pb含量为2.9×10^(-6)~24.7×10^(-6),平均含量为13.1×10^(-6);Zn含量为8.8×10^(-6)~236.0×10^(-6),平均含量为76.6×10^(-6)),与矿体距离呈现出明显的相关性,距离矿体越近,含量越高。稀土元素特征及微量元素相关关系分析表明,矿区围岩古近纪云龙组地层不是提供成矿物质的矿源层。矿区石膏锶、硫同位素地球化学性质显示金顶矿区的石膏为晚三叠世三合洞组蒸发沉积型,且在适当的成矿温度条件下(150~300℃),石膏会发生热化学还原作用(TSR),为金属硫化物矿床提供硫源。

上笼应激对不同品种蛋鸭血清生化指标和抗氧化能力的影响

为探讨品种和饲养模式对鸭上笼应激的血清生化指标的影响,研究以缙云麻鸭和金定鸭为研究对象,分别采用平养和笼养的养殖方式探究上笼应激对其血清生化指标和抗氧化能力的影响。结果显示:品种和饲养模式的交互作用对抗氧化能力指标超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)、总抗氧化能力(T-AOC)和血清细胞因子白细胞介素-6(IL-6)有显著(P<0.05)或极显著影响(P<0.01);饲养模式对抗氧化能力指标过氧化氢酶(CAT)、丙二醛(MDA)和肝功能指标白蛋白(ALB)、血清细胞因子免疫球蛋白M(IgM)、免疫球蛋白G(IgG)、白细胞介素-1β(IL-1β)、白细胞介素-2(IL-2)和白细胞介素-6(IL-6)有显著(P<0.05)或极显著影响(P<0.01)。其中平养模式丙二醛、白蛋白、免疫球蛋白G、白细胞介素-1β、白细胞介素-2和白细胞介素-6含量显著(P<0.05)或极显著(P<0.01)低于笼养模式,其他指标则显著高于笼养模式(P<0.01);品种对抗氧化能力指标超氧化物歧化酶有显著影响,金定鸭极显著高于缙云麻鸭(P<0.01)。研究表明上笼应激对缙云麻鸭和金定鸭肝脏、心脏和肾功能产生的应激损伤不显著,但对其抗氧化能力损伤较为明显。

热应激对金定鸭生产性能、生殖激素水平及免疫指标的影响

试验旨在研究热应激对金定鸭生产性能、血液生殖激素、卵巢生殖相关基因表达量及免疫指标的影响。试验选用产蛋期400日龄的金定鸭,设置对照组(常温组)、试验组(热应激)。对照组环境温度(25±2)℃,试验组环境温度(35±2)℃;测定热应激下金定鸭生产指标、血清生殖激素指标和免疫指标、卵巢生殖基因表达量。结果显示:与对照组相比,试验组产蛋率、总蛋重和平均蛋重极显著降低(P<0.01);血清促卵泡生成素(FSH)含量显著降低(P<0.05);卵巢促性腺素释放激素(GnRH)基因表达量显著降低(P<0.05),促黄体生成素(LH)基因表达量极显著降低(P<0.05);血清IgG含量极显著降低(P<0.01),肿瘤坏死因子-α(TNF-α)含量显著升高(P<0.05)。由此可见,热应激对金定鸭生产性能、生殖激素水平及免疫指标产生不利影响,其中产蛋率、总蛋重、平均蛋重、血清FSH及卵巢LH、GnRH基因表达量均显著降低,蛋鸭炎性因子水平显著增加,机体免疫力显著下降。

Geology and isotopic composition of helium,neon,xenon and metallogenic age of the Jinding and Baiyangping ore deposits,northwest Yunnan,China

Both the Jinding and Baiyangping ore deposits developed in the Lanping basin, which is a Mesozoic-Cenozoic terrestrial clastic sedimentary basin. Their occurrences can easily lead many people to compare them with the Pb-Zn deposit hosted in sedimentary rocks, such as Mississippian Valley-, Sedex- and sandstone-type Pb-Zn deposits. However, the Lanping basin developed in the settings of strong tectonic activity of the continental crust, which could cause an effective material exchange between the lower crust and the upper mantle. The orebodies are clearly tectonically controlled without syngenetic features, which probably represents a new type of the sedimentary rock-hosted Pb-Zn deposit. The isotopic compositions of noble gases in ore-forming fluids indicate that 2%32% of helium (3He/4He = 0.19 Ra1.97 Ra) is derived from the mantle, 50.1% of neon (20Ne/22Ne = 10.4510.83; 21Ne/22Ne = 0.03) from the mantle, and considerable amount of xenon (129Xe/130Xe = 5.846.86; 134Xe/130Xe = 2.262.71) from the mantle, which show that mantle fluids played an important role in the ore formation. The ore-forming age of 6760 Ma obtained by Re-Os and 40Ar-39Ar dating methods is later than the host rock, which is coeval with the Himalayan alkali magmatism of the mantle source and mantle-crust source. In this paper, the mineralization of the Jinding and Baiyangping ore deposits is considered to be related to the mantle fluids which move upward with the magma or along the deep faults, and mix with the meteoritic brine in the crust to result in large-scale deposition.

Helium and argon isotopic geochemistry of Jinding superlarge Pb-Zn deposit

The study results of He and Ar isotopes from fluid inclusions in pyrites formed during mineralization stage of Jinding superlarge Pb-Zn deposit in west Yunnan, China are reported. The data show that the 40Ar/ 36Ar and 3He/ 4He ratios of fluid inclusions are respectively in the range of 301.7\385.7 and 0.03\0.06Ra, suggesting the ore-forming fluid is a kind of air saturated meteoric groundwater. On the basis of research on coupled relationships among He, Ar, S and Pb isotopes, the evolution history of ore-forming fluid of the deposit can be summarized as （i） air saturated meteogenic groundwater infiltrated down and was heated→ （ii） leached S, C and radiogenic He, Ar from the basinal strata → （iii） leached Pb and Zn from mantle-derived igneous rocks located in the bottom of the basin→ （iv） ore-forming fluid ascended and formed the deposit. Due to this process, the isotope signatures of crustal radiogenic He, atmospheric Ar （with partial radiogenic 40Ar）, crustal S and mantle-derived Pb remained in the ore-forming fluid.

金鼎汤联合地西泮对乳腺癌术后心胆气虚型失眠症的影响

目的:探究清代名医黄元御《四圣心源》中所创金鼎汤联合地西泮对乳腺癌术后心胆气虚型失眠症的影响。方法:选择2019年10月—2021年8月山东省潍坊市中医院就诊的乳腺癌术后失眠中医证候为心胆气虚型患者90例,按随机数字表法分为对照组和实验组,每组45例,2组均给予口服地西泮治疗,实验组加用金鼎汤治疗,疗程8周。疗效采用有效率、汉密尔顿焦虑量表(Hamilton Anxiety Scale,HAMA)评分、匹兹堡睡眠质量指数量表(Pittsburgh sleep quality index,PSQI)评分、血清白介素6(IL-6)和肿瘤坏死因子-α(TNF-α)进行评价,并观察患者的复发或加重比例。结果:对照组有效率为77.78%,实验组为95.56%,2组有效率差别具有统计学差异;相比对照组,实验组能够明显改善患者的HAMA和PSQI评分;实验组能够明显改善患者血清IL-6(P<0.05)和TNF-α水平(P<0.01);对照组失眠复发/加重比例为17.78%,实验组为2.22%,差别均具有统计学差异。结论:金鼎汤联合地西泮能够明显减轻乳腺癌术后心胆气虚型失眠患者的焦虑情绪,改善其睡眠情况。

金定鸭神经症状相关致病菌分离和鉴定

【目的】探究导致金定鸭神经症状的病原菌。【方法】从辽宁金定鸭主产区4个24~48日龄的发病群中选择有神经症状以及纤维素性心包炎、肝周炎和气囊炎病变的病例共22例,用胰酶大豆琼脂(tryptic soy agar,TSA)和麦康凯琼脂(MacConkey’s agar,MCA)从脑组织分离细菌,通过革兰染色和瑞氏染色、生化试验和16S rDNA基因序列分析法对细菌分离株进行鉴定。【结果】从金定鸭脑组织中分离出的19株细菌均为革兰阴性杆菌,其中17株细菌(命名为H1株~H17株)在MCA培养基不生长,在生化试验中呈阴性结果,另外2株细菌(命名为H18株和H19株)在MCA形成红色菌落,能发酵葡萄糖、乳糖和麦芽糖,甲基红与吲哚试验均为阳性。以H1株为代表的17株分离株与血清1~19型的鸭疫里默氏菌(Riemerella anatipestifer,RA)参考菌株之间16S rDNA基因序列相似性为99.1%~100%。分离株H18株和H19株与所选8株大肠杆菌(Escherichia coli,E.coli)参考菌株之间16S rDNA基因序列相似性为99.2%~99.9%。用16S rDNA扩增产物序列进行遗传演化分析的结果显示,以H1株为代表的17株分离株属于RA,分离株H18株和H19株属于大肠杆菌。【结论】在观察的病例中,RA是导致金定鸭表现神经症状的主要致病菌,大肠杆菌亦可导致金定鸭出现神经症状。

滇西兰坪金顶铅锌矿床精细刻画矿化过程:来自硫化物原位微量元素和S-Pb同位素的证据

金顶铅锌矿床位于中国西南中新生代兰坪盆地,是亚洲第二大铅锌矿床,其巨大的储量和复杂的地质成矿史吸引了众多学者的研究,但在矿床成因和矿化过程的精细描述等方面仍存在较大争议。本文通过详细的野外地质调查并结合硫化物的LA-(MC)ICP-MS微量元素和硫、铅同位素分析对该矿床进行了详细解剖。金顶铅锌矿床的含矿地层为景星组砂岩、云龙组含砾砂岩及灰岩角砾岩。成矿过程可分为2个主要阶段:第Ⅰ阶段早期为浸染状的黄铁矿-白铁矿-闪锌矿-方铅矿,晚期硫化物呈块状且出现天青石;第Ⅱ阶段为闪锌矿-方铅矿-黄铁矿-天青石-重晶石-方解石-石膏阶段。成矿过程中硫化物的原位微量元素和S-Pb同位素表现出规律演化特征。主要金属元素除了以简单的类质同象形式赋存于闪锌矿中,Zn^(2+)与微量元素存在4Zn^(2+)→2Fe^(2+)→Ge^(4+)、2Zn^(2+)→Fe2+→Mn^(2+)、3Zn^(2+)→In^(3+)→Sn^(3+)等复杂的替代关系。综合微量元素和S-Pb同位素演化规律,本文认为金顶铅锌矿的成矿流体早阶段与富含金属的盆地卤水和富含H2S的流体有关,晚阶段则与大气水的混入有关。在后一过程中,大气水萃取了区域上富含Fe、Mn、Tl的红层碎屑岩,进而导致Fe、Mn、Tl等元素含量的升高,同时闪锌矿也表现出更宽范围的微量元素特征和更窄范围的^(208)Pb/^(204)Pb、^(207)Pb/^(204)Pb和δ^(34)S值的特征。由此推断,超大型金顶铅锌矿床是由多来源流体相互叠加而形成,其成矿物质主要来源于兰坪盆地沉积地层。此外,BSR作用在硫酸盐还原过程中起着重要作用,西部矿段还原硫可能还有少量TSR作用的贡献。最后,本文讨论了金顶铅锌矿床的矿床成因和精细矿化过程,综合分析认为它是一个受层间构造控制的、富Cd和Ge等多种分散元素的后生碎屑岩容矿型MVT铅锌矿床。

金鼎汤辨治失眠探微

失眠是临床常见病症,也是多种疾病的伴随症状。其病机复杂,多为本虚标实之证,本虚多为中气亏虚、心肾不交、心神失养,标实以肝郁、痰湿多见。金鼎汤辨治失眠疗效可靠,以扶正为主兼以祛邪,健脾益气、交通心肾扶其正,辛温燥湿、疏肝利胆祛其邪。本文从燥脾降胃,使中焦气机恢复升降;达肝敛胆,使营卫气血得以畅通;心肾相交,使阴阳平和3个方面略述其机制,并举验案一则以佐证。

金顶铅-锌-镉-铊矿床稀散元素Cd的赋存状态及矿床成因

云南金顶铅-锌-镉-铊矿床是世界级超大型矿床。本文利用TIMA对金顶矿床原生矿石锌/铅/硫精粉中Cd元素的赋存状态开展系统研究,并对黄铁矿和闪锌矿开展原位LA-ICP-MS微量元素分析。结果显示,闪锌矿中稀散元素Cd的含量为519.80×10^(-6)~116155.00×10^(-6),锌精粉中富镉区域广泛分布体积分数极低的硫镉矿。稀散元素Cd主要是以类质同象的形式赋存于闪锌矿晶格内,极少数是以镉的独立硫化物形式产出。闪锌矿以富含Cd、Pb、Cu元素,贫Fe、Mn、In等元素为特征,具有较低的In/Ge、In/Ga比值(平均值分别为0.008和0.014);黄铁矿中的Co、Ni元素含量较低,Co/Ni比值(平均值为1.766)指示黄铁矿具有沉积成因和热液成因。这些特征均表明该矿床主要形成于中低温环境。综合矿床地质特征和硫化物微量元素特点,认为金顶矿床属于密西西比河谷型(MVT)铅锌矿床。

兰坪金顶铅锌矿方解石微量元素、流体包裹体和碳-氧同位素地球化学特征研究

金顶铅锌矿矿床成因一直受到广泛关注,但至今没有达成共识,其重要原因之一是对矿床成矿流体性质和来源认识的局限。本文以金顶铅锌矿床成矿早期脉状方解石和晚期结核状方解石为研究对象,系统开展了微量元素、流体包裹体和碳-氧同位素地球化学研究,在此基础上探讨了该矿床成矿流体的性质和可能的来源。研究发现,虽然2种产状方解石都以轻稀土富集、轻重稀土显著分异、配分模式向右陡倾为特征,并且具有相似的Mg、Fe和Mn含量,但它们在微量元素、流体包裹体和碳-氧同位素地球化学特征上亦存在显著差异。脉状方解石相对于结核状方解石稀土元素总量较高,富集Co、Ni、(W)、Mo、Bi;脉状方解石流体包裹体显示相对高温高盐度的特征(Th>250℃,S>8.0%NaCleqv),而结核状方解石流体包裹体相对低温低盐度(Th<200℃,S<8.0%NaCleqv);脉状方解石的碳同位素组成(δ13CPDB=-22.95‰～-2.56‰)较分散,具有多源性,而结核状方解石碳同位素组成(δ13CPDB=-7.02‰～-6.18‰)相对集中,二者的氧同位素组成(δ18OSMOW=20.16‰～23.49‰)与沉积岩类似。综合分析认为,金顶铅锌矿成矿期脉状和结核状方解石虽然均属热液成因,但它们分别代表了2类不同性质的热液体系,早期成矿流体为多源的混合流体,成矿过程中可能有深源组分的加入,而晚期成矿流体以大气降水为主。