Zoning and Exploration Significance of the Maoping Pb-Zn Deposit, Northeastern Yunnan Province, China

2013 ◽  
Vol 734-737 ◽  
pp. 493-496
Author(s):  
Guang Shu Yang ◽  
Run Sheng Han ◽  
Peng Wu ◽  
Peng Yu Feng
Keyword(s):  
Yunnan Province ◽  
Massive Sulfide ◽  
Mineralization Process ◽  
Ore Body ◽  
Alteration Zoning ◽  
Mineral Assemblages ◽  
Body Center ◽  
Ore Prospecting ◽  
Northeastern Yunnan

Based on the lithofacies mapping and petrographic studies, the mineralization-alteration zoning and mineralization process of the Maoping Pb-Zn deposit are discussed. Three ore body groups of the Maoping Pb-Zn deposit have similar transversal zoning, which is characterized by different mineral assemblages from the ore body center to outside. The mineralization-alteration can be divided into diagenetic stage, massive sulfide-carbonate stage, veined sulfide-carbonate stage, and supergene stage. The massive sulfide-carbonate stage is main Pb-Zn mineralization stage. The established zoning model and indicators can be used for ore prospecting.

Metallogenic Geological Conditions and Prospecting Indicators of the Carbonate-Hosted Pb-Zn Deposits in Northeastern Yunnan Province, China

2014 ◽  
Vol 962-965 ◽  
pp. 296-299
Author(s):  
Guang Shu Yang ◽  
Yong Feng Yan ◽  
Peng Yu Feng ◽  
Jun Wei Zhang
Keyword(s):  
Large Scale ◽  
Yunnan Province ◽  
Thrust Fault ◽  
Geological Mapping ◽  
Forming Mechanism ◽  
Common Features ◽  
Geological Conditions ◽  
Ore Prospecting ◽  
Geochemical Studies ◽  
Northeastern Yunnan

Based on large scale geological mapping, geological-section, tectonic and geochemical studies on the carbonate-hosted Pb-Zn deposits in NE Yunnan, the metallogenic geological conditions are discussed, and the ore-prospecting indicators are summarized. The Pb-Zn deposits have many common features, which are mainly controlled by the thrust fault-fold structures and lithological conditions. The ore-forming mechanism of them is similar to the MVT Pb-Zn deposit. The combination of thrust fault-fold structures and altered carbonate rocks with geochemical anomalies are good indicators for prospecting.

Geological and Geochemical Features of the Maoping Pb-Zn Deposit, Northeastern Yunnan Province, China

2014 ◽  
Vol 88 (s2) ◽  
pp. 231-232
Author(s):  
Guangshu YANG ◽  
Hanjie WEN ◽  
Yongfeng YAN ◽  
Pengyu FENG ◽  
Junwei ZHANG
Keyword(s):  
Yunnan Province ◽  
Northeastern Yunnan

scholarly journals Comparison of Acid Mine Drainage Microbial Communities in Physically and Geochemically Distinct Ecosystems

2000 ◽  
Vol 66 (11) ◽  
pp. 4962-4971 ◽  
Author(s):  
Philip L. Bond ◽  
Greg K. Druschel ◽  
Jillian F. Banfield
Keyword(s):  
Acid Mine Drainage ◽  
Microbial Communities ◽  
Mine Drainage ◽  
Acid Leaching ◽  
Massive Sulfide ◽  
Molecular Data ◽  
Oligonucleotide Probes ◽  
Acid Mine ◽  
Ore Body ◽  
A Site

ABSTRACT This study presents population analyses of microbial communities inhabiting a site of extreme acid mine drainage (AMD) production. The site is the inactive underground Richmond mine at Iron Mountain, Calif., where the weathering of a massive sulfide ore body (mostly pyrite) produces solutions with pHs of ∼0.5 to ∼1.0. Here we used a suite of oligonucleotide probes, designed from molecular data recently acquired from the site, to analyze a number of microbial environments by fluorescent in situ hybridization. Microbial-community analyses were correlated with geochemical and mineralogical data from those environments. The environments investigated were within the ore body and thus at the site of pyrite dissolution, as opposed to environments that occur downstream of the dissolution. Few organism types, as defined by the specificities of the oligonucleotide probes, dominated the microbial communities. The majority of the dominant organisms detected were newly discovered or organisms only recently associated with acid-leaching environments. “Ferroplasma” spp. were detected in many of the communities and were particularly dominant in environments of lowest pH and highest ionic strength.Leptospirillum spp. were also detected in many slime and pyrite-dominated environments. In samples of an unusual subaerial slime, a new uncultured Leptospirillum sp. dominated.Sulfobacillus spp. were detected as a prominent inhabitant in warmer (∼43°C) environments. The information gathered here is critical for determining organisms important to AMD production at Iron Mountain and for directing future studies of this process. The findings presented here also have relevance to the microbiology of industrial bioleaching and to the understanding of geochemical iron and sulfur cycles.

Genesis of the Maoping carbonate-hosted Pb–Zn deposit, northeastern Yunnan Province, China: evidences from geology and C–O–S–Pb isotopes

2020 ◽  
Vol 39 (5) ◽  
pp. 782-796
Author(s):  
Yufan He ◽  
Tao Wu ◽  
Zhilong Huang ◽  
Lin Ye ◽  
Ping Deng ◽  
...  
Keyword(s):  
Yunnan Province ◽  
Pb Isotopes ◽  
Northeastern Yunnan

Advanced Identification and Quantification of In-Bearing Minerals by Scanning Electron Microscope-Based Image Analysis

2017 ◽  
Vol 23 (3) ◽  
pp. 527-537 ◽  
Author(s):  
Kai Bachmann ◽  
Max Frenzel ◽  
Joachim Krause ◽  
Jens Gutzmer
Keyword(s):  
Base Metal ◽  
Metal Sulfide ◽  
Massive Sulfide ◽  
Sulfide Ores ◽  
Grain Sizes ◽  
Mineral Assemblages ◽  
New Strategy ◽  
Automated Mineralogy ◽  
Liberation Analysis

AbstractThe identification and accurate characterization of discrete grains of rare minerals in sulfide base-metal ores is usually a cumbersome procedure due to the small grain sizes (typically <10 μm) and complex mineral assemblages in the material. In this article, a new strategy for finding and identifying indium minerals, and quantifying their composition and abundance is presented, making use of mineral liberation analysis (MLA) and electron probe microanalysis (EPMA). The method was successfully applied to polymetallic massive sulfide ores from the Neves-Corvo deposit in Portugal. The presence of roquesite and sakuraiite could be systematically detected, their concentration quantified by MLA measurements, and their identity later confirmed by EPMA analyses. Based on these results, an almost complete indium deportment could be obtained for the studied samples. This validates the approach taken, combining automated mineralogy data with electron microprobe analysis. A similar approach could be used to find minerals of other common minor and trace elements in complex base-metal sulfide ores, for example Se, Ge, Sb, or Ag, thus permitting the targeted development of resource technologies suitable for by-product recovery.

PGE geochemistry and Re–Os dating of massive sulfide ores from the Baimazhai Cu–Ni deposit, Yunnan province, China

Lithos ◽  
2008 ◽  
Vol 105 (1-2) ◽  
pp. 12-24 ◽  
Author(s):  
Xiaoming Sun ◽  
Shengwei Wang ◽  
Weidong Sun ◽  
Guiyong Shi ◽  
Yali Sun ◽  
...  
Keyword(s):  
Yunnan Province ◽  
Massive Sulfide ◽  
Sulfide Ores ◽  
Pge Geochemistry

Initial Analysis on Tectonic and Magmatism of Xinqiao Mining Area in Tongling of Anhui Province

2012 ◽  
Vol 524-527 ◽  
pp. 140-143
Author(s):  
Xiang Wei ◽  
Wen Gao Zhang ◽  
Xing Ke Yang ◽  
Hu Jun He
Keyword(s):  
Carbonate Rocks ◽  
Massive Sulfide ◽  
Mining Area ◽  
Anhui Province ◽  
Initial Analysis ◽  
Ore Body ◽  
Weak Part ◽  
Clastic Sediments ◽  
Sulfide Ore

There are significant hiatus between Devonian Wutong and Carboniferous Huanglong formation in Xinqiao mining area of Tongling. The two formations have very different lithology, Wutong formation is mainly continental clastic sediments, while Huanglong formation is carbonate rocks. The unconformity interface between Devonian Wutong formation and Carboniferous Huanglong formation is structural weak part, favors the aggregation of ore-forming elements. Magmatism mineralization forms significant industrial value layered massive sulfide ore body and structural weak part is as a major seam position.

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