Mineral Resources in Egypt (II): Non-metallic Ore Deposits

2019 ◽  
pp. 589-634 ◽  
Author(s):  
Ahmed El-Kammar ◽  
Adel Surour ◽  
Mohamed El-Sharkawi ◽  
Hassan Khozyem
Keyword(s):  
Mineral Resources ◽  
Ore Deposits

Experience in the development of innovative underground geotechnologies for mining of ore deposits

2020 ◽  
pp. 338-350
Author(s):  
I. V. Sokolov ◽  
Y. G. Antipin ◽  
N. V. Gobov ◽  
I. V. Nikitin
Keyword(s):  
Systematic Approach ◽  
Underground Mining ◽  
Mineral Resources ◽  
Environmental Safety ◽  
Ore Deposits ◽  
Operating Costs ◽  
Processing Waste ◽  
Ore Preparation ◽  
Additional Value

Based on an analysis of the design principles and practice of underground mining of ore deposits, the most significant features, trends to develop and directions to enhance of underground geotechnology in the field of opening and preparation, mining systems, filling works and ore preparation have been established. The main signs of innovation - scientific research and implementation in production in order to obtain additional value, are highlighted. Various approaches to the development of innovative underground geotechnologies are shown and a methodology for their justification is formulated based on a systematic approach implemented in the framework of the concept of integrated development of mineral resources and on the principles of economic efficiency, industrial and environmental safety, completeness of subsoil development. The experience of the IM UB RAS on the development and implementation of innovative underground geotechnologies in the design and industrial operation of a number of ore deposits is given, which significantly increased the completeness and quality of ore extraction from the subsoil, increased labor productivity in sinking and stoping works, reduced capital and operating costs for ore mining and to utilize mining and processing waste in the mined-out space.

Estimation of copper ore deposit parameters – case study of Rudna Mine mining block R-1 (SW part of Poland) using geostatistics

2021 ◽  
Author(s):  
Barbara Namysłowska-Wilczyńska
Keyword(s):  
Carbonate Rocks ◽  
Mineral Resources ◽  
Ore Deposits ◽  
Upper Permian ◽  
Spatial Analyses ◽  
Copper Ore ◽  
Cu Content ◽  
Copper Mineralization ◽  
Rock Formations ◽  
Mineralized Zone

<p>This geostatistical study investigates the variation in the basic geological parameters of the lithologically varied deposit in mining block R-1 in the west (W) part of the Rudna Mine (the region Lubin – Sieroszowice, SW part of Poland).</p><p>Data obtained from the sampling (sample size N = 708) of excavations in block R-1 were the input for the spatial analyses. The data are the results of chemical analyses of the Cu content in the (recoverable) deposit series, carried out on channel samples and drilled core samples, taken systematically at every 15-20 m in the headings.</p><p>The deposit profile comprises various rock formations, such as: mineralized Weissliegend sandstones, intensively mineralized upper Permian dolomitic-loamy and loamy copper-bearing schists and carbonate rocks: loamy dolomite, striped dolomite and limy dolomite, of various thickness. No schists formed in some parts of block R-1, which are referred to as the schistless area. The deposit series here is considerably less mineralized (comparing with other mining blocks) even though the mineralization thickness of the sandstone and carbonate rocks reaches as much as 20 m.</p><p>The variation in the Cu content and thickness of the recoverable deposit and the estimated averages Z* of the above parameters were modelled using the variogram function and the ordinary (block) kriging technique. The efficiency of the estimations was characterized.</p><p>As part of the further spatial analyses the Z<sub>s</sub> values of the analysed deposit parameters were simulated using the conditional turning bands simulation. Confidence intervals for the values of averages based on the estimated averages Z* and averages <strong> </strong>based on the simulated values (realizations) Z<sub>s</sub>, showing the uncertainty of the estimations and simulations, were calculated.</p><p>The results of the analyses clearly indicate the shifting of the mineralized zone (the mineralizing solutions), sometimes into the sandstones while spreading throughout the floor of calcareous-dolomitic formations and sometimes into the carbonate rocks, partly entering the roof layers of sandstones. It can be concluded that the process of deposit formation and copper mineralization variation had a multiphase character and the lateral and vertical relocation of the valuable metal ores could play a significant role.</p><p>The combination of various geostatistical techniques - estimation and simulation - will allow for more effective management of natural resources of mineral resources, including copper ore deposits.</p>

scholarly journals Sponge and coral communities of potential mineral resources in the deep-sea: An overview

2018 ◽  
Author(s):  
Tina Molodtsova ◽  
Christopher Kelley ◽  
Lénaick Menot ◽  
Les Watling
Keyword(s):  
Deep Sea ◽  
Slow Growth ◽  
Mineral Resources ◽  
Ore Deposits ◽  
Manganese Nodules ◽  
Cumulative Impact ◽  
Mining Sites ◽  
Intensive Exploitation ◽  
Coral Communities ◽  
Hard Substrata

Depletion of commercially valuable minerals on land and increased need of such resources for modern electronics and manufacturing is attracting more and more attention to deep-sea mineral deposits such as cobalt crusts, manganese nodules, phosphorites, polymetallic sulfides and even deep-sea ooze. In a few years we expect intensive exploitation in the deep-sea. Being suspension feeders, corals and sponges associated with hard substrata in potential mining sites would be adversely impacted by deep-sea mining. Deep-sea corals and sponges are characterized by extremely slow growth rates and, as can be seen from fishery impacts, they may take decades to centuries to restore. At the same time, they serve as a substrate, shelter and food for a number of associated deep-sea organisms, thus increasing the cumulative impact of their loss. We summarize here the available data on coral and sponge communities of solid deep-sea ore deposits and possible mechanisms driving their diversity.

scholarly journals Anthropogenic dynamics and recovery of disturbed landscapes at the Far East Russia permafrost area

2020 ◽  
Vol 169 ◽  
pp. 03009
Author(s):  
Pavel E. Tikhmenev ◽  
Andrey A. Smirnov ◽  
Evgeniy A. Tikhmenev ◽  
Galina V. Stanchenko
Keyword(s):  
Vegetation Cover ◽  
Far East ◽  
Mineral Resources ◽  
Ore Deposits ◽  
Aesthetic Value ◽  
Anthropogenic Landscapes ◽  
Landscape Elements ◽  
The Far East ◽  
East Russia ◽  
The Impact

The results of studies of anthropogenic landscapes functioning with an assessment on the processes of natural self revegetation are summarized. The principles of accelerated restoration of the ecological and aesthetic value of disturbed landscapes at the permafrost zone are substantiated, based on the data obtained during studying the selfrevegetation processes on disturbed complexes. Development of placer and ore deposits of mineral resources is leading to deep transformation of landscape and to destruction of soil-vegetable complexes. The processes caused by mining-technical activity are leading to variable mechanisms of degradation of soil and vegetables often having complex impact. Results of study of sustainability of soil-vegetable complexes to the impact of mancaused activity have showed the dependence from the structure of the soil profile and it characteristic, from the character of genetic horizons, frozen status of the landscape elements, form the structure and biomass and productivity of vegetation cover.

Shining Like Gold and New: The Emergence of Brass North of the Alps Around the Turn of the Era.

2021 ◽  
Author(s):  
Daniel Bursák ◽  
Alžběta Danielisová ◽  
Tomáš Magna ◽  
Petr Pajdla ◽  
Jitka Míková ◽  
...  
Keyword(s):  
Iron Age ◽  
Central Area ◽  
Mineral Resources ◽  
Indigenous Communities ◽  
Western Mediterranean ◽  
Ore Deposits ◽  
Massif Central ◽  
Late Iron Age ◽  
New Findings ◽  
Military Campaigns

Abstract Ancient brass (aurichalcum) was a valued commodity in the Antiquity, notably because of its gold-like appearance. After mastering brass fabrication using the cementation procedure in the 1st century BC in the Mediterranean, this material became widely used by the Romans for coins, jewellery and other objects. Because of its visual qualities, it is believed that since this period, brass played an important role in diplomatic and economic contacts with indigenous communities, notably Celtic and Germanic tribes north of Danube and west of Rhine. To test this hypothesis, we performed for the first time the archaeometric and advanced statistical multivariate analysis of a suite of late Iron Age and Early Roman period (1st century BC – 1st century AD) brass and other copper-alloy objects from the territory of Bohemia to constrain their provenance. The new results for brass objects from this early phase of the massive occurrence of Roman aurichalcum in the Barbarian territories point to the ore deposits in the western Mediterranean or the Massif Central area in Gaul, consistent with historical events. These new findings underscore the great economic and political importance of the new and rich mineral resources in the Transalpine Gaul acquired due to Caesar's military campaigns

scholarly journals Main Dike Swarm of the Northern Part of the Chakylkalyan Megablock and Their Potential Ore Content (On the Example of the Yakhton Dike Swarm, Southern Uzbekistan)

2020 ◽  
Vol 6 (11) ◽  
pp. 104-116
Author(s):  
T. Yarboboev ◽  
Sh. Sultanov ◽  
I. Ochilov
Keyword(s):  
Genetic Relationships ◽  
Mining Industry ◽  
Mineral Resources ◽  
Geological Structure ◽  
Gold Deposits ◽  
Ore Deposits ◽  
Stable Operation ◽  
Dike Swarm ◽  
Geochemical Properties ◽  
Lower Stage

The study of mineralogical and geochemical properties of gold deposits is an urgent task for the geological industry, especially in the new areas under study. Without reliable information about the geological factors that lead to the formation of ore deposits and the mechanisms of deposit accumulation, it is impossible to ensure reliable scientific forecasting of the mineral potential of the regions, the effective creation of mineral resources of enterprises and mining, the stable operation of the mining industry. Our study of gold deposits was aimed at understanding these important issues of the ore formation problem. This is the urgency of the case. The role of the dictators of the Yakhton ore deposit as important structural material and mineral components of the leading types of ore-magmatic systems is being assessed. A peculiar feature of the geological structure of the ore area is the close paragenetic relationship of mineralization by rocks of the dike kids complex. Mineralization is localized in two stages and has bimetallic properties (gold, tungsten). The mineralization in the upper layer is localized in the corpus carbonate rocks of Yakhton (mainly garnet-pyroxene content). In the lower stage, mineralization is governed by a northeastern tectonic attenuation zone, which includes area concentrations of Au and W and areal mineralized zones that are part of the dike of the Yakhton region. Determining the spatial, age, and genetic relationships of mineralization with magmatism is a major problem of metallogeny.

scholarly journals GOLD AND MERCURY IN THE PROCESSES OF ORE FORMATION IN KAMCHATKA

2018 ◽  
pp. 54-60
Author(s):  
V. A. STEPANOV
Keyword(s):  
Chemical Properties ◽  
Mineral Resources ◽  
Gold Deposits ◽  
Ore Deposits ◽  
Ore Formation ◽  
Natural Processes ◽  
The Difference ◽  
Physical And Chemical ◽  
Gold Mercury ◽  
And Chemical Properties

The main features of the difference and similarity of the physical and chemical properties of gold and mercury have been given, which  determine their behavior in the natural processes of formation of  deposits of both metals in Kamchatka. It has been shown that the  difference in the properties of gold and mercury led to the  emergence of independent monometallic deposits, differing in  connection with intrusive formations, in depth and temperature of  ore formation. The similarity of the properties of these elements  determined the appearance of mercury minerals on gold ore deposits and gold in mercury deposits, as well as the formation of complex  gold-mercury deposits. Four geological-industrial types of gold- mercury deposits have been distinguished: the Knoxville, the Carlin,  the Kyuchus and the Chemlian ones, which include deposits with  large gold reserves both abroad and in Russia. The identification of  gold deposits, including through the revision of mercury ore  occurrences and deposits of Kamchatka for gold presence, will strengthen the mineral resources base of gold in this region.

Introduction to the Grenville Province: a geological and mineral resources perspective derived from government and academic research initiatives

2005 ◽  
Vol 42 (10) ◽  
pp. 1637-1642 ◽  
Author(s):  
Louise Corriveau ◽  
Thomas Clark
Keyword(s):  
New Technologies ◽  
Mineral Exploration ◽  
Academic Research ◽  
Mineral Resources ◽  
Ore Deposits ◽  
Mineral Deposits ◽  
Special Role ◽  
Grenville Province ◽  
Mineral Potential ◽  
New Research

Canadian society faces a significant decline in the number of active mines and in the discovery rate of base and precious metal deposits. Exploring in the shadows of active and former mines with improved metallogenic models and new technologies is one way to address this problem. Another way is to diversify mineral exploration outside known mining camps and target prospective but underexplored settings and nonconventional mineral deposits. In Canadian terms, diversifying exploration commonly translates into targeting gneissic and granitic terrains where modern geoscience knowledge may be rare or only at reconnaissance scale and where key regional and local indicators and vectors to ore may be missing in the geological record. Though underexplored settings abound in Canada, only one orogen has an aura that discourages exploration: the Grenville Province. Consequently, even though the Grenville Province provides the best model of a deep continental-collision zone so far studied anywhere on Earth and constitutes a microcosm of continental accretion, it remains underexplored, underprospected, undermapped and underestimated. It is thus essential to revisit the mineral potential of the most accessible orogen of the Canadian Shield, search for its missing volcanic belts, reexamine its ore deposits and mineral occurrences, and explore new research avenues using the best remote-sensing device on Earth: human eyes. This special issue captures advances associated with regional field investigations by government that played a special role in opening up frontier areas for mineral exploration. Papers stemming from academia and government–university–industry consortiums investigate further some of the topics covered by these and earlier surveys and others contribute structural and metamorphic insights that will be valuable in future mapping projects. The advances reported here for the Grenville Province may provide impetus to revisit other Grenville-age terrains worldwide, just as metallogenic models developed in other countries have provided the means to look in a different manner at the Grenville orogen for mineral deposits. Collectively all the various approaches presented in this volume help us to revamp our way of looking at the mineral potential of the Grenville orogen.

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