Exposure of minerals in crushed ore and metal contents of concretions extracted into the concentrate during beneficiation of magentite, titanomagnetite, and pyrite copper and copper-zinc ores in the urals

Porous pavements infiltrated with stormwater are faced with clogging problems: runoff particles seep and clog the pervious surface layer of these structures. Clogging material samples (in the form of sludge) have been collected in cleaning operations on the pervious asphalt. This study aims at characterizing these materials, particle size distribution, heavy metal contents by particle size, and studying interactions between metals and particles. A sequential extraction procedure proposed by the experts of the Community Bureau of Reference (B.C.R.) was applied to provide information about heavy metal distribution on particles and to evaluate interaction strength, and consequently potential metal mobility when chemical variations occurred in the environment. Mainly made up of sand, the materials are polluted with lead, copper, zinc and cadmium. The concentrations appeared to be linked with road traffic intensity. The heavy metal contents by particle size showed that the finer are the particles, the higher are the heavy metal concentrations. Heavy metals were found potentially labile; metals contents in the residual fraction (mineral fraction) represented less than 20 % of the total concentration. Cadmium and zinc were apparently more labile than lead and copper.

Download Full-text

The effect of stage of growth on the copper, zinc, manganese, and molybdenum contents of Algerian oats grown of thirteen soils

Australian Journal of Agricultural Research ◽

10.1071/ar9520343 ◽

1952 ◽

Vol 3 (4) ◽

pp. 343 ◽

Cited By ~ 25

Author(s):

CH Williams ◽

CWE Moore

Keyword(s):

Trace Metal ◽

Soil Ph ◽

Dry Matter ◽

Growing Period ◽

Stages Of Growth ◽

Early Stages ◽

Copper And Zinc ◽

Rate Of Increase ◽

Metal Contents ◽

Copper Zinc

Algerian oats were grown on 13 soils in the glass-house. Plants were harvested at intervals throughout the growing period, and when large enough were divided into leaf, stem, and (in later harvests) flowers or fruits. Copper, zinc, manganese, and molybdenum were determined on the separate plant fractions. Characteristic changes in the trace metal contents of the plant with growth were found for each element. These changes were generally similar irrespective of the soil on which the plants were grown. With the exception of manganese, the availability of the element in the soil did not affect the trend of the changes as the plant matured, but only the amount present. The uptake of each of the four elements continued through the whole period of growth. The total amounts of copper and zinc in both the leaf and the stem decreased after flowering as translocation to the grain proceeded. The amount of manganese in the leaf increased throughout the period of growth, although the rate of increase was less after flowering. The amount of molybdenum in the leaf increased until flowering, after which there was little further change. The rate of uptake of manganese was approximately equal to the rate of production of dry matter, whereas that of molybdenum, copper, and zinc was relatively greater in the early stages of growth. There was no observable influence of soil pH on the availability of copper and zinc, but that of manganese decreased with increasing pH. The availability of molybdenum was affected by the combined influences of soil pH and soil iron.

Download Full-text

Selenium, tellurium and precious metal mineralogy in Uchalinsk copper-zinc-pyritic district, the Urals

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/123/1/012027 ◽

2016 ◽

Vol 123 ◽

pp. 012027 ◽

Cited By ~ 1

Author(s):

I Vikentev

Keyword(s):

Precious Metal ◽

The Urals ◽

Copper Zinc

Download Full-text

Massive copper–zinc sulphide deposits in the Urals

Ore Geology Reviews ◽

10.1016/s0169-1368(98)00014-6 ◽

1998 ◽

Vol 14 (1) ◽

pp. 1-69 ◽

Cited By ~ 59

Author(s):

V.A Prokin ◽

F.P Buslaev

Keyword(s):

Zinc Sulphide ◽

The Urals ◽

Copper Zinc ◽

Sulphide Deposits

Download Full-text

Mineral formation conditions in acid magmatic systems related to the formation of massive sulfide deposits of the Urals and Altai-Sayany area

10.35597/2313-545x-2021-7-4-1 ◽

2021 ◽

pp. 5-30

Author(s):

V.A. Simonov ◽

V.V. Maslennikov ◽

A.V. Kotlyarov

Keyword(s):

Rare Earth ◽

Melt Inclusions ◽

Massive Sulfide ◽

The Urals ◽

Sulfide Deposits ◽

Transition Zones ◽

Metal Contents ◽

Formation Conditions ◽

Using Data ◽

Felsic Volcanic

Studies of melt inclusions in quartz indicate the similarity of acid magmatic systems of massive sulfde deposits in the Urals and Altai-Sayany region. The melts of normal alkalinity corresponding to rhyodacite and rhyolite compositions and related to the tholeiitic series are dominant in all the deposits considered. The magmas are characterized by the same type evolution with a decreasing content of main oxides (TiO2, Al2O3, FeO, MgO, CaO, Na2O, K2O) and an increasing SiO2 content. Our results show the accumulation of Cu in relatively low-H2O acidic melts of ancient (Cambrian) deposits of the Altai-Sayany region and low metal contents in the intermediate (Silurian–Devonian) and H2O-saturated magmas of the Urals. The youngest (Devonian) magmas of Siberia evolve simultaneously along these two directions. The analysis of melt inclusions in quartz suggests that the minimum contents of trace and rare earth elements are characteristic of the Silurian-Devonian acid melts of the Urals, with their maximum contents in the youngest (Devonian) magmas and the intermediate contents of ancient (Cambrian) magmatic systems of the Altai-Sayany region. The features of rare and rare earth element patterns in melt inclusions in quartz indicate the similarity of acid magmatic systems of massive sulfde deposits in the Urals and Altai-Sayany region with present-day suprasubduction melts in the ocean-continent transition zones. Computational modeling using data on melt inclusions in quartz confrms our previous conclusions (Simonov, Maslennikov, 2020) that the occurrence of contrasting (basic and felsic) volcanic complexes with massive sulfde deposits in the Urals and Altai-Sayany region is a result of evolution of basaltoid magmas. Keywords: conditions of mineral crystallization, basaltic-rhyolitic complexes, massive sulfde deposits, melt inclusions, quartz, acidic melts.

Download Full-text

Determination of the Heavy Metal Contents and the Benefit/Cost Analysis of Hypericum salsugineum in the Vicinity of Salt Lake

Sains Malaysiana ◽

10.17576/jsm-2021-5012-03 ◽

2021 ◽

Vol 50 (12) ◽

pp. 3493-3503

Author(s):

Aynur Demir ◽

Gökçen Baysal Furtana ◽

Mehtap Tekşen ◽

Rukiye Tipirdamaz

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Salt Lake ◽

Benefit Cost Analysis ◽

Metal Contents ◽

Copper Zinc ◽

Useful Life ◽

Benefit Cost ◽

Potential Use

In this study, Hypericum salsugineum, an endemic halophytic plant growing around Salt Lake, was analyzed to determine the heavy metals (chromium, lead, copper, zinc and nickel) on it and on the soil it grew. The phytoremediation potential of H. salsugineum was evaluated. In addition, the benefit cost (B/C) analysis was performed for its potential use in phytoremediation. The plant and soil samples were collected from Eskil and Cihanbeyli between May and September in 2016. A total of 300 soil and plant samples were analysed for heavy metal content. Statistical and standard benefit/cost analyses were performed for assessment. The capacity of accumulating the aforementioned heavy metals was found to be high in H. salsugineum. It was found that Ni and Pb ratio exceeded optimum values in its habitat, and H. salsugineum accumulated available Ni and Pb. When the plant was evaluated in terms of benefit/cost, B/C ratio was greater than 1 during the useful life of the study. This conclusion increases the ecological and economical values of H. Salsugineum, effecting its potential use in phytoremediation.

Download Full-text

Authigenesis at the Urals Massive Sulfide Deposits: Insight from Pyrite Nodules Hosted in Ore Diagenites

Minerals ◽

10.3390/min10020193 ◽

2020 ◽

Vol 10 (2) ◽

pp. 193 ◽

Cited By ~ 1

Author(s):

Nataliya P. Safina ◽

Irina Yu. Melekestseva ◽

Nuriya R. Ayupova ◽

Valeriy V. Maslennikov ◽

Svetlana P. Maslennikova ◽

...

Keyword(s):

Trace Elements ◽

Black Shale ◽

Massive Sulfide ◽

Accessory Mineral ◽

The Urals ◽

Sulfide Deposits ◽

The Core ◽

Massive Sulfide Deposits ◽

Icp Ms ◽

Copper Zinc

The pyrite nodules from ore diagenites of the Urals massive sulfide deposits associated with various background sedimentary rocks are studied using optical and electron microscopy and LA-ICP-MS analysis. The nodules are found in sulfide–black shale, sulfide–carbonate–hyaloclastite, and sulfide–serpentinite diagenites of the Saf’yanovskoe, Talgan, and Dergamysh deposits, respectively. The nodules consist of the core made up of early diagenetic fine-crystalline (grained) pyrite and the rim (±intermediate zone) composed of late diagenetic coarse-crystalline pyrite. The nodules are replaced by authigenic sphalerite, chalcopyrite, galena, and fahlores (Saf’yanovskoe), sphalerite, chalcopyrite and galena (Talgan), and pyrrhotite and chalcopyrite (Dergamysh). They exhibit specific accessory mineral assemblages with dominant galena and fahlores, various tellurides and Co–Ni sulfoarsenides in sulfide-black shale, sulfide–hyaloclastite–carbonate, and sulfide-serpentinite diagenites, respectively. The core of nodules is enriched in trace elements in contrast to the rim. The nodules from sulfide–black shale diagenites are enriched in most trace elements due to their effective sorption by associated organic-rich sediments. The nodules from sulfide–carbonate–hyaloclastite diagenites are rich in elements sourced from seawater, hyaloclastites and copper–zinc ore clasts. The nodules from sulfide–serpentinite diagenites are rich in Co and Ni, which are typical trace elements of ultramafic rocks and primary ores from the deposit.

Download Full-text

Concentration of selected micro-nutrients in saliva among women in menopausal period treated with hormone replacement therapy

Osteologie/Osteology ◽

10.1055/s-0038-1630097 ◽

2013 ◽

Vol 22 (01) ◽

pp. 46-51

Author(s):

M. Rahnama ◽

I. Jastrzêbska-Jamrogiewicz ◽

R. Jamrogiewicz

Keyword(s):

Bone Mineral Density ◽

Hormone Replacement Therapy ◽

Blood Serum ◽

Replacement Therapy ◽

Hormone Replacement ◽

Surgical Removal ◽

Femoral Bone ◽

Mineral Density ◽

Natural Menopause ◽

Copper Zinc

Summary Objective: The aim of this study was to observe the variability of the level of copper, zinc and manganese in saliva amongst women with hypoestrogenia, treated and untreated with hormone replacement therapy (HRT). Methods: The study was conducted on a group of 60 women treated and untreated with HRT. Half of the patients were after natural menopause and other half was after surgical removal of ovaries. Research on micronutrients in non-stimulated saliva and blood serum was carried out in 2005. Tests on saliva were repeated in 2010. Investigation of bone mineral density (BMD) of femoral bone was performed in year 2010. Results: Statistical analysis of concentration of copper and zinc revealed a linear correlation between the levels of these microelements in blood serum and saliva. The study revealed that HRT has a beneficial effect on BMD and the concentration of copper and manganese in saliva and blood serum of patients after the menopause. Patients treated with HRT showed higher BMD values than groups not treated with hormones. Conclusions: Saliva appears to be a promising diagnostic material which can be used to analyze the content of trace elements, but further research should be carried out on a broader research group.

Download Full-text