Geology and pyrite-polymetallic mineralization of the forecasted Limonite deposit, Rassokhinsky ore cluster (Yenisei ridge)

2022 ◽  
pp. 22-42
Author(s):  
Sergey Serdyuk ◽  
Vladimir Makarov ◽  
Valentina Kirilenko ◽  
Ilya Makarov ◽  
Egor Muromtsev ◽  
...  
Keyword(s):  
Carbon Black ◽  
Zinc Content ◽  
Massive Sulfide ◽  
Yenisei Ridge ◽  
High Carbon ◽  
Upper Riphean ◽  
Polymetallic Mineralization

The development of Russia’s largest Gorevskoye leadzinc deposit (Gorevsky GOK, Novoangarsky OK) will depend on promising deposits of the Angara polymetallic ore region, in particular, those of the Rassokhinsky ore cluster. Based on the analysis of geological and geophysical information of previous and current studies, a major Limonite pyrite-polymetallic (massive sulfide) deposit is forecasted within it. The main lithological and stratigraphic criterion for the localization of ores is determined by their confinement to high-carbon black quartz-sericite schists of the upper subformation of the Potoskuy suite of the Upper Riphean. In the top of this pack, layered and massive pyrite-polymetallic ores, 70– 140 m thick, are localized. Based on PPA data, lead and zinc content in core varies from fractions of a percent to several percent, based on the ICP-AES method: 0,1– 3,7 % Pb, 0,1–6,4 % Zn, Pb : Zn ratio is 1 : (1–10).

Upper Riphean age of kyanite-sillimanite metamorphism in the Transangarian Yenisei Ridge: Evidence from 40Ar/39Ar data

2010 ◽  
Vol 433 (2) ◽  
pp. 1108-1113 ◽  
Author(s):  
I. I. Likhanov ◽  
V. V. Reverdatto ◽  
P. S. Kozlov ◽  
A. V. Travin
Keyword(s):  
Yenisei Ridge ◽  
Upper Riphean

Carbon Black. II—The Role of Oxygen

1930 ◽  
Vol 3 (1) ◽  
pp. 122-130
Author(s):  
G. R. Johnson
Keyword(s):  
Zinc Oxide ◽  
Carbon Black ◽  
Zinc Dust ◽  
Volatile Matter ◽  
The State ◽  
High Carbon

Abstract The results reported in this paper confirm the indication of previous work that a portion of the oxygen in carbon black exists in rather definite chemical combinations on the surface of a hydrocarbon with a high carbon-hydrogen ratio. It is not clear yet whether all of the oxygen in carbon black exists in this state, as previous work has shown that after heating for extended periods at 955° C. there still remains a small amount of oxygen in the black. It has been shown that the oxygen attached as here described does not exist in the state of gaseous adsorption and cannot be removed by heat alone as oxygen, but can be removed by reaction with zinc dust at temperatures below that at which gaseous evolution usually takes place. The oxygen goes over to zinc oxide and the volatile matter of the residue is considerably reduced.

Study of Material Characteristics about Lower Cambrian Black Shale in ZhiJin-KaiYang-XiFeng, Guizhou

2012 ◽  
Vol 170-173 ◽  
pp. 1162-1166
Author(s):  
Jie Zhang ◽  
En Lin Yang ◽  
Yong Ning Di ◽  
Fei Xie ◽  
Guo Feng Yang
Keyword(s):  
Carbon Black ◽  
Black Shale ◽  
Building Materials ◽  
Deep Processing ◽  
High Carbon ◽  
Technical Process ◽  
Black Clay ◽  
Metallic Mineral ◽  
Black Rock Series ◽  
Clay Rocks

The high cambrian black rock series of clay under Zhijin, Kaiyang, Xifeng and other areas of Guizhou , are high carbon black shale - clay rocks characterized by containing illite ores[1]. After deep processing, it will be served as illite ores belonging to a useful clay minerals, and the main directions of development and application include filler, new building materials and ceramics. After the activation, potassium can be extracted from illite that is often rich in potassium which can be prepared for potash fertilizer. Carrying out the study of mineral material science of high carbon black clay mineral rock , the aim is developing and using this type of non-metallic mineral. Based on this study, recoverying useful metal elements by exploring the reasonable technical process will be significant to enhance the comprehensive value of the type of deposit and improve its economic efficiency.

scholarly journals Mineralization constraints on the origin of polymetallic (Pb, Ag, Zn, Cu, Au) deposits hosted in the metasedimentary Lajeado Group, Southern Ribeira Belt, Brazil

2020 ◽  
Vol 3 (3) ◽  
pp. 151-167
Author(s):  
Angela Lopes ◽  
◽  
Francisco Campos ◽  
Anderson Silva ◽  
Maria José Mesquita ◽  
...  
Keyword(s):  
Mineral Exploration ◽  
Massive Sulfide ◽  
Fault Zones ◽  
Passive Margin ◽  
Geological Unit ◽  
Carbonate Sequence ◽  
Polymetallic Mineralization ◽  
Fault Valve ◽  
Mineral District ◽  
Geochemical Analyses

The sediment-hosted polymetallic (Pb, Zn, Ag, Au-Cu) mineralization of the Vale do Ribeira Mineral District has been known since the beginning of the 20th century, but exploration was interrupted just before the turn of the century. The Vale do Ribeira Mineral District is part of the Southern Ribeira Belt, developed during the Brasiliano-Pan African orogeny. Polymetallic mineralization is mainly hosted in metalimestones of the Lajeado Group, a typical platform carbonate sequence of a passive margin, which has been deformed during the Gondwana assembly. The region has a gap of research since the mines were closed, which justifies new projects on their mineral economic potential. Fieldwork, petrographic and geochemical analyses were developed in five currently inactive mines (Panelas, Barrinha, Rocha, Lajeado, and Furnas) and their surroundings, along with the description of a drill core executed in the 1980s. The main type of ore consists of polymetallic fault-fill veins of massive sulfide, which are composed essentially by argentiferous galena, sphalerite, pyrrhotite, arsenopyrite, and chalcopyrite. The highest ore grades were obtained from samples in the Panelas Mine, with contents of up to 35% lead, 5% zinc, > 1% copper and 564 ppm silver, as well as 23% iron. New ore occurrences were described in a secondary gallery of the Barrinha Mine, whose gold grades reached up to 5,630 ppb. The main controls of the mineralization are lithological - since the ore occurs exclusively in carbonate rocks, irrespective of the geological unit - and structural, related to NE high-angle strike-slip fault zones, including evidence of fault-valve behavior. Fault zones as the main control of the polymetallic veins is an innovative interpretation, increasing the perspectives for mineral exploration in the area. Although they are small deposits, the presented data indicate that the region has potential for new discoveries and that the mined deposits are probably not exhausted.

New Process for Preparing Tire Tread Compounds Having Low Rolling Resistance

1982 ◽  
Vol 10 (1) ◽  
pp. 16-22 ◽  
Author(s):  
H. Hirakawa ◽  
A. Ahagon
Keyword(s):  
Carbon Black ◽  
Rolling Resistance ◽  
High Carbon ◽  
Two Stage ◽  
Second Stage ◽  
Polybutadiene Rubber ◽  
New Process ◽  
Chlorobutyl Rubber ◽  
Very High ◽  
Wet Skid Resistance

Abstract Two-stage mixing when applied to blends of Chlorobutyl Rubber (C1-IIR), Natural Rubber (NR), and Polybutadiene Rubber (BR), can produce tread compounds exhibiting a combination of very low hysteresis, good wet skid resistance, and good abrasion resistance. In the first stage, about half the raw rubber, including all C1-IIR and BR, is mixed with most of the carbon black to form a very high carbon black stock. In the second stage, the first-stage stock is diluted with the remaining NR. Curatives, etc., are added on the mill. Tests on radial tires for automobiles confirm the advantages of the two-stage mixed tri-rubber blend tread compounds.

FEATURES OF LEAD AND ZINC METALLOGENY WITHIN THE YENISEI RIDGE

2020 ◽  
pp. 68-84
Author(s):  
S. M. Makeev ◽  
E. A. Muromtsev ◽  
V. A. Makarov ◽  
G. V. Belokonov
Keyword(s):  
Siberian Platform ◽  
Yenisei Ridge ◽  
Tectonic Structures ◽  
Ore Formation ◽  
Lead And Zinc ◽  
Location Patterns ◽  
Lead Zinc ◽  
Polymetallic Mineralization ◽  
The Relationship ◽  
Geological Formations

Information collected on deposits, ore occurrences, and lead and zinc mineralization points known within the Yenisei Ridge is provided. A summary of the latest data on the geology and metallogeny of lead and zinc in the region is presented. A brief description of the deposits is given and their ore formation typification is carried out. The position of deposits in a stratigraphic section, the relationship with geological formations and tectonic structures, and subsequent conclusions about deposit location patterns and metallogenic zonality of the area were examined. The position analysis of polymetallic mineralization in regional geophysical and geochemical field revealed the presence of lead → zinc → barium trend from the Ishimbinsk fault towards the Siberian platform and the potential discovery of economically significant polymetallic mineralization in the eastern Yenisei Ridge.

Analysis of Carbon Black-Filled Rubber Materials by External Reflection FT-IR Spectrometry

1994 ◽  
Vol 48 (8) ◽  
pp. 1021-1025 ◽  
Author(s):  
E. T. G. Lutz ◽  
H. J. Luinge ◽  
J. H. van der Maas ◽  
R. van Agen
Keyword(s):  
Quantitative Analysis ◽  
Carbon Black ◽  
Least Squares Regression ◽  
Qualitative And Quantitative Analysis ◽  
High Carbon ◽  
Carbon Black Content ◽  
Ir Spectrometry ◽  
Filled Rubber ◽  
Ft Ir ◽  
Selection Of

External reflection Fourier transform infrared (FT-IR) spectrometry in combination with partial least-squares regression allows qualitative and quantitative analysis of rubber materials with a high carbon black content (up to 35% w/w) on a routine level. The method developed proves to be reproducible and yields reliable qualitative information. The prediction potential of the method is shown to be sufficient for (semi)-quantitative analysis. Proper selection of spectral windows greatly improves the results. It is shown that natural, butadiene, and styrenebutadiene rubber can be determined with a precision of 9, 8, and 6% w/w, respectively.

Effect of Carbon Black Structures towards Heat Build-Up Measurements and its Dynamic Properties

2015 ◽  
Vol 1134 ◽  
pp. 131-137 ◽  
Author(s):  
Mohd Ismail Rifdi Rizuan ◽  
Mohammad Azizol Abdul Wahab ◽  
Ahmad Zafir Romli
Keyword(s):  
Carbon Black ◽  
Dynamic Properties ◽  
Loss Modulus ◽  
Rolling Resistance ◽  
Testing Procedure ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
High Carbon ◽  
Heat Build Up ◽  
Styrene Butadiene

The aim of this study is to investigate the effect of different carbon black structures towards heat build-up measurements and its dynamic properties such as tangent delta, loss modulus and storage modulus on the industrial rubber compounds containing Natural Rubber (NR) and Styrene Butadiene Rubber (SBR). Different carbon black structures were used and characterised with respect to their rheological and physical properties. Heat Build-up test is a testing procedure which is used to measure the rate of heat generated by the rubber vulcanisates when subjected to rapidly oscillating compressive stresses or strain under controlled conditions. It was found that NR compound containing low and high carbon black structures; N375 and N339 produced lower heat generation compared to NR/SBR blends that filled with the same type of carbon black fillers. It shows that NR with low and high carbon black structures exhibits low heat build-up (surface and intrinsic) with a balance of good traction and low rolling resistance for application in tyre.

scholarly journals Geology and Genesis of the Giant Gorevskoe Pb-Zn-Ag Deposit, Krasnoyarsk Territory, Russia

2020 ◽  
Author(s):  
Georgii Belokonov ◽  
Max Frenzel ◽  
Nadezhda S. Priyatkina ◽  
Axel D. Renno ◽  
Vladimir Makarov ◽  
...  
Keyword(s):  
Sulfur Isotope ◽  
Iron Sulfide ◽  
Massive Sulfide ◽  
Passive Margin ◽  
Yenisei Ridge ◽  
Geochemical Data ◽  
Isotope Signature ◽  
Margin Setting ◽  
Reducing Conditions ◽  
Host Rocks

Abstract The Gorevskoe Pb-Zn-Ag mine is currently the largest producer of Pb and Zn in Russia, exploiting one of the largest sediment-hosted Pb-Zn deposits worldwide. Despite its size and economic importance, the Gorevskoe deposit remains poorly understood. It is located on the western margin of the Siberian craton within the Yenisei Ridge, a Neoproterozoic orogenic belt. Mineralization consists of three tabular orebodies that are in turn composed of multiple stacked stratiform to strata-bound lenses of galena-pyrrhotite-sphalerite-rich massive sulfide ore, hosted in organic-rich marine metalimestones and calcareous slates of Stenian to Tonian age (1,020 ± 70 Ma). Extensive Fe-Mg-Mn-carbonate alteration haloes surround the ore lenses. The Pb isotope signature of the deposit is consistent with derivation of Pb, and probably all associated metals, from an evolved crustal source at the time of formation of the host rocks. The sulfur isotope compositions of pyrrhotite, sphalerite, galena, arsenopyrite, and pyrite (δ34S = 16.0–20.4‰) do not vary considerably across the deposit and are within the range reported for contemporaneous seawater, indicating complete reduction of marine sulfate as the main source of sulfur. The available geologic and geochemical data indicate that the Gorevskoe deposit belongs to the sediment-hosted massive sulfide (SHMS) class of Zn-Pb deposits, with an affinity to Selwyn-type deposits. Hydrothermal mineralization appears to be temporally related to rifting and distal mafic volcanism in a passive margin setting. Geologic relationships suggest that the orebodies formed in a diagenetic environment. Furthermore, the predominance of primary pyrrhotite over pyrite as the major iron sulfide, the presence of abundant siderite, and the relatively homogeneous sulfur isotope signature of the ores indicate highly reducing conditions during ore formation. They also constrain the character of the metal-bearing fluid to be similarly reducing, and of moderate temperature (200°–300°C). Gorevskoe may thus be regarded as one of the world’s largest Selwyn-type SHMS deposits.

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