scholarly journals Germanium-rich palladium minerals – palladogermanide pd2ge, paolovite pd2 (sn, ge), zvyagintsevite in sulfide-bearing anorthosites of the Yoko-Dovyren pluton, Baikal region

2019 ◽  
Vol 64 (5) ◽  
pp. 554-558
Author(s):  
E. M. Spiridonov ◽  
D. A. Orsoev ◽  
A. A. Ariskin ◽  
E. V. Kislov ◽  
N. N. Korotaeva ◽  
...  
Keyword(s):  
Intermetallic Compounds ◽  
Noble Metal ◽  
Baikal Region ◽  
Sulfide Ores ◽  
Bottom Part ◽  
Sulfide Ore ◽  
Carbonaceous Shales ◽  
Ultramafic Intrusion ◽  
Critical Unit

The bottom part of the Yoko-Dovyren layered mafic–ultramafic intrusion hosts the Baikalskoe deposit of Cu–Ni sulfide ores with Pt–Pd mineralization, and the stratigraphically higher portion of the intrusion includes units and pockets with low-sulfide ore with Pt–Pd mineralization. The maximum Pd, Pt, Au, Ag, Hg, and Cd concentrations and the greatest number of noble-metal minerals, including those containing Ge, are typical of vein-shaped sulfide-bearing anorthosite bodies and pegmatoid anorthosites in the upper part of the Critical Unit, at the boundary between the troctolite unit and overlying gabbronorite. The noble-metal minerals were produced mostly by postmagmatic pneumatolytic (fluid–metasomatic) processes. These minerals are kotulskite, moncheite, zvyagintsevite, telargpalite, paolovite, and other Pd and Pt chalcogenides and intermetallic compounds, including palladogermanide that contains 19.8 wt % Ge (the first find in Russia), paolovite with 8.1 wt % Ge (first find), and Au-rich zvyagintsevite that bears 0.55 wt % Ge. The palladogermanide has the composition Pd2.03(Ge0.80As0.15Bi0.02)0.97, and much of its Ge is substituted for As, as is typical of endogenic Ge minerals. The composition of the Ge-paolovite isPd2.02(Sn0.54Ge0.35Sb0.05As0.04)0.98. The possible source of the germanium is contact-metasomatic pyrite-bearing paralic carbonaceous shales hosting the intrusion.

scholarly journals Palladogermanide Pd2Ge from sulfidized anorthosite of the Yoko-Dovyren intrusion: first finding in Russia

2019 ◽  
Vol 485 (6) ◽  
pp. 741-744 ◽  
Author(s):  
E. M. Spiridonov ◽  
D. A. Orsoev ◽  
A. A. Ariskin ◽  
E. V. Kislov ◽  
N. N. Korotaeva ◽  
...  
Keyword(s):  
Noble Metal ◽  
Layered Intrusion ◽  
Sulfide Ores ◽  
Bottom Part ◽  
First Finding

The Yoko-Dovyren ultramafic-mafic layered intrusion includes the Baikal deposit of Cu-Ni sulfide ores with Pt-Pd mineralization in the bottom part, and “horizons” and pockets of low-sulfide ores with Pt-Pd mineralization at the upper levels of the section. The highest concentration of Pd, Pt, Au, Ag, Hg, and Cd, as well as the widest variability in the noble-metal minerals, is typical of the vein-like bodies of anorthosite and pegmatoid anorthosite in the upper part of the critical horizon at the boundary between troctolite and the overlying gabbronorite. Most of the noble-metal minerals are the postmagmatic pneumatolytic (fluid-metasomatic) phases. Among them are palladogermanide with 19.8 wt % Ge, paolovite with 8.1% Ge, and zvyagintsevite with 0.55% Ge. The composition of palladogermanide is Pd2.03(Ge0.80As0.15Bi0.02)0.97; Ge is significantly replaced with As in this phase, which is typical of endogenic Ge minerals.

Role of geochemical barriers in forming sulfide ores in various geological environments

2021 ◽  
pp. 63-73
Author(s):  
IRINA GABLINA
Keyword(s):  
Sulfide Ores ◽  
Atlantic Region ◽  
Geochemical Barriers ◽  
Sulfide Ore ◽  
Cupriferous Sandstone ◽  
Central Atlantic ◽  
Ore Types ◽  
Long Term Studies

Based on long-term studies of cupriferous sandstone and shale deposits, as well as deepsea sulfide ores, various types of geochemical barriers where sulfides form are shown. Cupriferous sandstones and shales form as metals precipitate from redbed reservoir waters on H2S geochemical barrier. Syngenetic and epigenetic barrier types are identified. Oceanic sulfide ores from the Central Atlantic region were studied; as a result, a new hydrothermal-metasomatic sediment-hosted mineralization type was found, along with previously known sulfide ore types (massive ores on the seafloor and stockwork ores in substrate rocks). Geochemical seafloor sulfide formation environments and those in biogenic carbonate bottom sediments are examined.

Bio-Heap Leaching of Primary Copper Sulfide Ore by JOGMEC

2017 ◽  
Vol 262 ◽  
pp. 99-102
Author(s):  
Tatsuya Shinkawa ◽  
Tadashi Chida ◽  
So Furukawa ◽  
Taro Kamiya
Keyword(s):  
Copper Sulfide ◽  
Heap Leaching ◽  
Sulfide Ores ◽  
High Iron Content ◽  
Iron Oxidizing Bacteria ◽  
Acid Consumption ◽  
Sulfide Ore ◽  
Leaching Solution ◽  
Sulfur Oxidizing ◽  
Copper Sulfide Ore

JOGMEC has been carrying out the study on primary copper sulfide ores leaching for recovering copper economically and efficiently by heap leaching. In our study, we have been using the primary copper sulfide ore produced in an IOCG deposit. The ore is characterized by high iron content and high acid consumption in leaching. For the optimization of the leaching, the conditions such as ore size, agglomeration, pH and irrigation rate of leaching solution were examined with column leach tests. The best result was over 80 % extraction of copper in 150 days with leaching solution of 1 M sulfuric acid and temperature of 45 °C. In this experiment, the fines of the ore sample were removed before putting it into the column to keep the permeability of the ore bed. In these column leach tests, the Fe2+/total-Fe ratio of PLS decreased gradually by the activity of naturally grown iron-oxidizing bacteria. The bacteria in PLS, which have the ability of iron-oxidizing and sulfur-oxidizing, were identified by next-generation sequencing as Acidithiobacillus caldus and Sulfobacillus thermosulfidooxidans. We also carried out bench-scale tests with about 200 tons of the primary copper sulfide ores. Iron-oxidizing and sulfur-oxidizing bacteria were identified in the leaching solution as same with column leach tests. It is considered that the bacteria worked in the leaching solution and on the surface of the ores.

RESEARCHING REGULATIONS OF FIRE SULFIDE ORE AND BREED DURING COMBINED DEPOSIT DEVELOPMENT

2020 ◽  
Vol 2 (1) ◽  
pp. 341-356
Author(s):  
M.V. RYLNIKOVA ◽  
◽  
G.I. AYNBINDER ◽  
N.A. MITISHOVA ◽  
L.A. GADZHIEVA ◽  
...  
Keyword(s):  
Research Methods ◽  
Sulfide Ores ◽  
Oxidation Processes ◽  
Sulfide Ore ◽  
Copper Zinc ◽  
Copper Pyrite

Mineralogical and mineralogical-graphic analyzes of samples of the host and ore-bearing rocks of copper-zinc-pyrite deposits were carried out. The Program and the corresponding research methods offactors and patterns of development of the oxidation processes of sulfide ores and rocks have been developed and tested. The results of chemical-technological studies of sulfur-pyrite, copper-pyrite, copper-zinc ores, sericite-quartz rocks and metamorphosed tuffs are presented.

scholarly journals New Geochemical and Mineralogical Data on Rocks and Ores of the NE Flank of the Oktyabr’skoe Deposit (Norilsk Area) and a View on Their Origin

Minerals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 44
Author(s):  
Nadezhda Krivolutskaya ◽  
Yana Bychkova ◽  
Bronislav Gongalsky ◽  
Irina Kubrakova ◽  
Oksana Tyutyunnik ◽  
...  
Keyword(s):  
Complex Structure ◽  
Massive Sulfide ◽  
Geological Structure ◽  
Chemical Compositions ◽  
Olivine Gabbro ◽  
Sulfide Ores ◽  
Intrusive Body ◽  
Bottom Part ◽  
Entire Area ◽  
Almost All

The Oktyabr’skoe deposit in the Norilsk ore district is the largest platinum-copper-nickel deposit in the world. It contains a huge main orebody (2.4 km3) of massive sulfide ores and some smaller sulfide bodies. Almost all publications on this deposit are devoted to the main orebody. However, to solve the problems of the deposit genesis, it is necessary to take into account the geological structure of the entire area and the composition of all orebodies. For the first time we present data on the inner structure, geochemical and mineralogical characteristics of the intrusive body, and related the disseminated and massive sulfide ores (orebody number C-5) in the northeastern flank of the deposit. The intrusion studied in the core of the borehole RG-2 consists of several horizons including the following rock varieties (from bottom to top): olivine gabbro-dolerites, taxitic gabbro-dolerites, picritic gabbro-dolerites, troctolites, olivine-free gabbro-dolerites, ferrogabbro, and leucogabbro. The intrusion shows a strong differentiated inner structure where high-Mg rocks (up to 25 wt.% MgO troctolites and picritic gabbro-dolerites) in the bottom are associated with low-Mg rocks (6–7 wt.%, gabbro-dolerites, leucogabbro, ferrogabbro) without intermediate differentiated members (8–12 wt.% MgO olivine gabbro-dolerites). Rocks are characterized by low TiO2 content (≤1 wt.%). Taxitic gabbro-dolerites, picritic gabbro-dolerites, and troctolites contain disseminated sulfide chalcopyrite-pyrrhotite mineralization (32 m thick). Cu and Ni concentrations reach up 0.74 and 0.77 wt.%, respectively. Massive ores (27 m) occur in the bottom part of the intrusion. The ores consist of pentlandite, chalcopyrite and pyrrhotite, the latter mineral dominates. Their chemical composition is stable: Cu/Ni ~1, Pd/Pt varies from 5 to 6. The C-5 orebody is similar to the C-3 orebody in terms of mineral and chemical compositions, and differ from the nearby the C-4 orebody which is characterized by a Cu/Ni ratio changing from 5 to 8. On the basis of geochemical and mineralogical data, it is assumed that orebodies C-3 and C-5 are associated with one intrusion, while the orebody number C-4 is related to another intrusive body. Thus, the deposit has a more complex structure and includes several more intrusions than is usually considered.

Nickel Bioleaching at Elevated pH: Research and Application

2017 ◽  
Vol 262 ◽  
pp. 197-201 ◽  
Author(s):  
Jian Zhi Sun ◽  
Bo Wei Chen ◽  
Jian Kang Wen ◽  
Biao Wu
Keyword(s):  
Nickel Sulfide ◽  
Industrial Applications ◽  
Low Grade ◽  
Sulfide Ores ◽  
Leaching Rate ◽  
Sulfide Deposits ◽  
Acid Consumption ◽  
Sulfide Ore ◽  
The Cost ◽  
Experimental Researches

Biohydrometallurgy has broad application prospect in the treatment of low-grade nickel sulfide ore. However, quite a number of nickel sulfide deposits are associated with basic gangue minerals such as contain olivine, serpentine. The high basic gangue minerals will lead to a higher acid consumption and make it difficult to bioleach at pH below 2.5. It is crucial to improve processes and adapt bacteria with this kind of ore. This paper reviews the experimental researches and industrial applications for bioleaching of the high acid consumption nickel sulfide ores. It is suggested that bioleaching at elevated pH will have similar leaching rate compared with pH below 2.5, meanwhile the cost will be decreased remarkably due to a lower acid consumption and less dissolved impurity ions.

Research on Bulk Floatation Discarding Tailing of Copper and Zinc Polymetallic Sulfide Ores

2014 ◽  
Vol 881-883 ◽  
pp. 1621-1625
Author(s):  
Hai Yun Xie ◽  
Qun Jie Ye ◽  
Ping Zhou ◽  
Li Kun Gao ◽  
Xiong Tong ◽  
...  
Keyword(s):  
Zinc Sulfide ◽  
Yunnan Province ◽  
Loss Rate ◽  
Influence Factors ◽  
Sulfide Ores ◽  
Butyl Xanthate ◽  
Flotation Reagents ◽  
Sulfide Ore ◽  
Development And Utilization ◽  
Copper Zinc

This paper is aimed at a typical complex polymetallic copper-zinc sulfide ores in Yunnan province, China, and adopted the process of bulk floatation discarding tailing under coarse grinding condition, the influence factors are researched such as grinding fineness, types and dosage of flotation reagents. When the coarse grinding size-74μm 75% and butyl xanthate and ethyl xanthate as combination collector, The amount of flotation discarding tailing is 60% for crude ores, the tailings contain 0.058% Cu, 0.027% Pb and 0.12% Zn, the loss rate of various metals in tailing is 3.21% Cu, 5.49% of Pb and 3.35% of Zn. This research has referenced significance to economical development and utilization of copper-zinc sulfide ore resources.

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