scholarly journals Features of lead-zinc mineralization in the Phia Dam - Khuoi Man region

2020 ◽  
Vol 61 (5) ◽  
pp. 120-134
Author(s):  
Phuong Nguyen ◽  
Dong Phuong Nguyen ◽  
Huong Thi Nguyen ◽  
Huong Thi Le ◽  
Dinh Van Do ◽  
...  
Keyword(s):  
Controlling Factors ◽  
Material Composition ◽  
Fault System ◽  
Research Results ◽  
Epithermal Deposits ◽  
Ore Bodies ◽  
Ore Minerals ◽  
Lead Zinc ◽  
Bedding Surface ◽  
New Research

The paper introduces a number of new research results on the characteristics of lead - zinc ores in Phia Dam - Khuoi Man areas based on the application of traditional geological methods, combining the method of researching material composition and method statistical maths. In the study area, there are two forms of ore bodies with characteristics described as below: the first form consists of ore bodies developed along the stratabound bedding surface, are mainly distributed in either anticlinal structures (i.e. Phia Dam region) or cuesta (i.e. Khuoi Man region) and the second form consists of ore bodies in lodes, filled in cracks or zones of fracture along the northwest – southeast faults. Primary ore minerals are mainly galena, sphalerite, pyrite, chalcopyrite, etc. and gangue minerals are calcite, dolomite, and quartz. Ore structures are nests, veins, disseminated veins, banded, speckled, or sometimes breccia - like ones. The relevant and controlling factors of lead-zinc mineralization in Phia Dam - Khuoi Man region are the northwest - southeast fault system and the lithostratigraphy. Ores are of either mesothermal or epithermal deposits (temperatures varies from 162 to 308 degrees Celcius), with a specific symbiotic combination of quartz - sphalerite - galena - chancopyrite.

scholarly journals Research of the Ore Dressability of the Khandiza Polymetallic Ore Deposit

2019 ◽  
Vol 9 (2) ◽  
pp. 4789-4792
Keyword(s):  
Material Composition ◽  
Rational Analysis ◽  
Ore Deposit ◽  
Selective Flotation ◽  
Ore Minerals ◽  
Lead Zinc ◽  
Copper Zinc ◽  
Flotation Concentration ◽  
Polymetallic Ore ◽  
Selection Of

The article discusses the results of technological studies on the concentration of polymetallic ore of the Chinarsay deposit. The results of studies of the material composition and flotation concentration options for technological samples of ore from the Chinarsay deposit are presented. The results of studying the material composition of ore based on spectral, chemical and rational analysis are presented. It has been established that industrially valuable ore components are lead, zinc and copper, the contents of which are given. It was shown that ore minerals are in close intergrowth with non-metallic ones - quartz, sericite, chlorite, carbonate, etc. It is noted that the studies were carried out in two directions: collective flotation of all ore minerals with further selection of the collective concentrate into lead, zinc, copper and pyrite concentrates and direct collective selective flotation to produce sequentially lead-copper, zinc and pyrite concentrates. As a result of enrichment, lead, zinc and copper concentrates are selected that meet the production requirements.

scholarly journals Khandiza polymetallic ore washability study

2020 ◽  
pp. 70-79
Author(s):  
Umarova Inoiat ◽  
◽  
Aminzhanova Sevara ◽  
Salizhanova Gulnarakhon ◽  
Kalandarov Kobil ◽  
...  
Keyword(s):  
Operations Research ◽  
Material Composition ◽  
Rational Analysis ◽  
Chemical Methods ◽  
Laboratory Facilities ◽  
Effective Technology ◽  
Ore Minerals ◽  
Lead Zinc ◽  
Polymetallic Ore ◽  
Selection Of

Introduction. The article considers the results of operations research on the washability of polymetallic ore at Khandiza deposit. The results of the research of material composition are delivered together with the variants of process samples flotation at Khandiza deposit. Research aim is to study the material composition of ore samples and the development of effective technology of polymetallic ore concentration at Khandiza deposit. Methodology. Polymetallic ore of Khandiza deposit has been chosen as research subject. As part of the process various reagents have been used as well as various laboratory facilities, modern physical, physical-chemical and chemical methods of analysis. Research has been carried out in two direction: bulk flotation of all ore minerals with further selection of bulk concentrate to lead, zinc and copper concentrates and direct bulk selective flotation with the production of lead-copper and zinc concentrates in a successive order. Results. The outcomes of ore material composition study have been delivered based on spectral, chemical and rational analysis. It has been determined that industrially valuable ore components are lead, zinc and copper, the contents of which are presented. It has been shown that ore minerals are in tight twinning with nonmetallic minerals, i.e. quartz, sericite, chlorite, carbonate, etc. Summary. As a result of concentration, lead, zinc and copper concentrates have been dressed. The concentrated meet industrial requirements.

scholarly journals Solutions for Unexpected Challenges Encountered when Integrating Research Genomics Results into the EHR

ACI Open ◽  
2020 ◽  
Vol 04 (02) ◽  
pp. e132-e135
Author(s):  
Luke V. Rasmussen ◽  
Christin Hoell ◽  
Maureen E. Smith ◽  
Rex Chisholm ◽  
Justin Starren ◽  
...  
Keyword(s):  
Genetic Research ◽  
Lessons Learned ◽  
Return Of Results ◽  
Patient Portal ◽  
Test Results ◽  
Research Results ◽  
Genetic Test Results ◽  
Future Return ◽  
New Research ◽  
Genetic Results

Abstract Background While there have been published reports detailing technical challenges of incorporating genetic test results into the electronic health record (EHR) with proposed solutions, less has been published about unanticipated sociotechnological or practical communication challenges involved in this process. Objectives This study was aimed to describe unanticipated issues that arose returning genetic research results through the EHR as part of the National Human Genome Research Institute (NHGRI)-funded electronic Medical Records and Genomics (eMERGE) 3 consortium, and provide lessons learned for future implementations Methods We sequenced 3,000 participants on a 109-gene panel and returned genetic results initially in person and/or by letter, with a later release directly into the EHR and patient portal. Results When results were returned through the EHR, multiple participants expressed confusion and contacted the health system, resulting in our institution temporarily freezing our return of research results. Discussion We determined the likely causes of this issue to be (1) the delay between enrollment and results return, (2) inability to personalize mass e-mail messages announcing new research test results in the EHR, (3) limited space for description of test results in the EHR, and (4) the requirement to list an ordering physician for research results in the EHR. For future return of results, we propose sending preparatory e-mails to participants, including screenshots of how they can expect to see their results presented in the EHR portal. Conclusion We hope our lessons learned can provide helpful guidance to other sites implementing research genetic results into the EHR and can encourage EHR developers to incorporate greater flexibility in the future.

Application and Research of Rotate-Lookup-Summation in Robot Motion

2011 ◽  
Vol 467-469 ◽  
pp. 186-191
Author(s):  
Hao Bin Shi ◽  
Wen Jie Dong
Keyword(s):  
Control Volume ◽  
Dimensional Space ◽  
Control Variable ◽  
Control Process ◽  
Controlling Factors ◽  
Dimensional Control ◽  
Control Factors ◽  
Look Up Table ◽  
New Research ◽  
Control Volumes

How to exercise reasonable motion control on robot becomes a new research focus in robot technology research. This paper proposes the Rotate-Lookup-Summation according to the deficiency of traditional look-up table. This method first confirm the controlling factors P1，P2….Pn that would affect the control volume Z, and then the multi-dimensional control volumes and multi-dimensional control factors would be projected to sub-dimensional space. Finally, the same controlling factors of different sub-dimensional space would be rotated to a single sub-dimensional space and establish a corresponding table. According to the single sub-dimensional space value of the controlling factors, the corresponding control variable could be found in table and eventually complete the control process. Experiments show that the method could ensure the integrity and accuracy of table, reduce the table memory capacitance and lookup time, so as to realize the control of look-up table in micro-device.

Discovery of Se-rich canfieldite, Ag8Sn(S,Se)6, from the Shuangjianzishan Ag–Pb–Zn deposit, NE China: A multimethodic chemical and structural study

2018 ◽  
Vol 83 (03) ◽  
pp. 419-426 ◽  
Author(s):  
Degao Zhai ◽  
Luca Bindi ◽  
Panagiotis C. Voudouris ◽  
Jiajun Liu ◽  
Stylianos F. Tombros ◽  
...  
Keyword(s):  
Site Occupancy ◽  
Integrated Approach ◽  
X Ray Diffraction ◽  
Ne China ◽  
Unit Cell Parameters ◽  
X Ray ◽  
Cell Parameters ◽  
Ore Bodies ◽  
Vein Type ◽  
Ore Minerals

AbstractDuring a study of the ore minerals belonging to the recently discovered Shuangjianzishan Ag–Pb–Zn deposit in NE China, we have discovered exceptional selenium enrichment in canfieldite (up to 11.6 wt.% of Se). Incorporation of Se into canfieldite has been investigated by an integrated approach using field emission scanning electron microscopy, electron microprobe and single-crystal X-ray diffraction. Canfieldite has been identified as one of the dominant Ag-bearing ore minerals in the studied deposit, which occurs mostly in slate-hosted vein type Ag–Pb–Zn ore bodies. Selenium is either homogeneously or, remarkably, heterogeneously distributed in the different canfieldite fragments studied. Chemical variations of Se are mostly attributable to a series of retrograde reactions resulting in diverse decomposition and exsolution of primary phases during cooling, or alternatively, related to influxes of Se-rich fluids during the formation of canfieldite. To evaluate the effects of the Se-for-S substitution in the structure, a crystal of Se-rich canfieldite [Ag7.98Sn1.02(S4.19Se1.81)Σ6.00] was investigated. The unit-cell parameters are: a = 10.8145(8) Å and V = 1264.8(3) Å3. The structure was refined in the space group F$\bar{4}$3m to R1 = 0.0315 for 194 independent reflections, with 20 parameters. The crystal structure of Se-rich canfieldite was found to be topologically identical to that of pure canfieldite. If the short Ag–Ag contacts are ignored (due to the disorder), the two Ag atoms in the structure can be considered as three-fold (Ag1) and four-fold (Ag2) coordinated. Tin adopts a regular tetrahedral coordination. As in the case of Te-rich canfieldite, the refinement of the site-occupancy factor indicates that Se is disordered over the three anion positions.

Analysis of Ore-Controlling Factors and Prospecting Potential of the Luziyuan Lead-Zinc Deposit in West of Yunnan

2013 ◽  
Vol 807-809 ◽  
pp. 2197-2200
Author(s):  
Zhi Cai Xiao ◽  
Ming Guo Deng
Keyword(s):  
Yunnan Province ◽  
Geological Structure ◽  
Controlling Factors ◽  
Horizontal Distance ◽  
Ore Formation ◽  
Zinc Deposit ◽  
Deep Fault ◽  
North East ◽  
Zone Control ◽  
Lead Zinc

Luziyuan lead-zinc deposit located in Fengwei, Zhenkang,Yunnan Province, at the direction of 140°, horizontal distance is about 10km. The deposit closely related to acidic magmatism and geological structure. According to the latest exploration results of Yunnan Geological Survey, the amount of lead-zinc resources is 280 million tons, it is super-mega deposit. Mineralization factors as tectonics, deep fault, concealed rock, ore formation and surface north-east trending fault zone control the formation of the deposit. Gravity abnormal, magnetic abnormal, geochemical abnormal and associated mineralization of the mine relate to prospecting potential.

scholarly journals Experimental models of 'Basement'-controlled salients - application to the proterozoic fold-thrust belt of the quadrilátero ferrífero (Minas Gerais, Southeastern Brazil)

2003 ◽  
Vol 75 (2) ◽  
pp. 249-263 ◽  
Author(s):  
Caroline J. S. Gomes ◽  
Milton Pereira-Filho ◽  
Silvia C. M. Braga
Keyword(s):  
Minas Gerais ◽  
Experimental Models ◽  
Controlling Factors ◽  
Fault System ◽  
Southeastern Brazil ◽  
Thrust Belt ◽  
Existing Structures ◽  
Quadrilátero Ferrífero ◽  
Southeastern Margin ◽  
Archean Basement

Scaled sandbox models are used to simulate the development of ´basement´-controlled, salients. We investigate the controlling factors on the development of closed curvatures in map-view, considering constant both the sand pack thickness and the space between obstacles. These models are compared with the Fundão-Cambotas Fault System in the Proterozoic fold-thrust belt in the Quadrilátero Ferrífero region, along the southeastern margin of the São Francisco craton. In the experiments, a pronounced curvature resulted from the margin-controlled salient process in the presence (i) of a basal ductile detachment, or (ii) of pre-existing structures. The results suggest that the convex-to-the-foreland, west-vergent Fundão-Cambotas Fault System that borders the Archean basement highs and displaced older Transamazonian structures westward, is partly a consequence of interaction of propagating thrusts with obstacles in the foreland.

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