Research Results on Possibilities for Development and Mining of “Borska Reka” Ore Body in Bor Ore Deposit

2009 ◽  
pp. 85-91
Author(s):  
Vitomir Milic ◽  
Igor Svrkota ◽  
Zivorad Milicevic
Keyword(s):  
Ore Deposit ◽  
Research Results ◽  
Ore Body

Sandaozhuang Open-Pit Quality Block Modeling Based on Engineering Geological Profile

2014 ◽  
Vol 962-965 ◽  
pp. 959-963
Author(s):  
Ying Sun ◽  
Shu Ai Ma ◽  
Lang Huang ◽  
Huan Ming Zhou ◽  
Dong Tao Hu ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Boundary Curve ◽  
Open Pit ◽  
Quality Model ◽  
Block Model ◽  
Body Contour ◽  
Ore Deposit ◽  
Model Based ◽  
Ore Body ◽  
Contour Model

Block model is the precondition of open-p it mine o ptimization boundary design and mining design. In this paper , after studying the ore deposit model that using the optimization boundary, p ut forward to establish ore deposit quality block model based on the proposed Sandaozhuang engineering geological profile . Using prospecting line profile CAD drawings that o btained during the exploration phase, us e two-dimensional coordinate conversion three-dimensional coordinates, the profile boundary curve smoothing, apply D elaunay triangulation and other technology to establish ore body contour model. Establish the ore body quality model based on the ore body contour model, use i nverse distance weighted method in geostatistics for the assignment of ore body quality model, get the Sandaozhuang open pit quality block model. And ba sed on this to estimate the reserves , lay the foundation for the follow work of the mine.

Lead Isotope of Sulfide Minerals from Dachang Ore Field of Guangxi (South China): Characteristic and Implication

2012 ◽  
Vol 455-456 ◽  
pp. 1399-1403
Author(s):  
Yong Sheng Cheng
Keyword(s):  
South China ◽  
Linear Relation ◽  
Lead Isotope ◽  
Sulfide Minerals ◽  
Ore Deposits ◽  
Guangxi Province ◽  
Ore Deposit ◽  
Ore Body ◽  
Polymetallic Ore

In the Danchi mineralization belt of Guangxi province, south China, the Dachang tin-polymetallic ore deposit is one of the largest Sn ore deposits in this world. But about the genesis and the ore source, there have been some disputes. In terms of the Dafulou deposit, the mineralization model and deposit mechanism is rather illegibility. By analysing and comparing the lead isotope of three ore deposit (the Changpo, the Lamo and the Dafulou), it show that the correlations of 206Pb/204Pb, 207Pb/204Pb and 208Pb/204Pb of sulfide minerals demonstrate obvious excellent linear relation. So, it is also suggested that the eastern mineralization belt, the middle mineralization belt and the western mineralization belt shared the same ore source. And, according to the features of no.22 ore body, the Dafulou deposit is characterized with the characteristics of the Sedimentary Exhalative Deposit (SEDEX).

scholarly journals Ore resource modelling of Ajabanoko iron ore deposit, Ajabanoko, Nigeria

2020 ◽  
Vol 9 (1) ◽  
pp. 128
Author(s):  
Adebimpe Rasheed Adeshina ◽  
Akande Jide Muili
Keyword(s):  
Iron Ore ◽  
Mining Operation ◽  
Drill Hole ◽  
Mineral Deposits ◽  
Distance Method ◽  
Ore Deposit ◽  
Ore Body ◽  
Iron Ore Deposit ◽  
Resource Modelling ◽  
Inverse Distance

Ore resource modelling is an essential aspect of mining operation. It is also a crucial pre-mining step required for a successful exploitation of mineral deposits. Ajabanoko iron ore resource model was developed and the ore reserve estimate carried out using inverse distance method as contained in Surpac 6.4.1 mine software. The total number of blocks used for the model is 54,475. Ore estimation result obtained from thirteen drill hole data indicates 38,313,595 tonnes of iron ore and density of 3.65 tonnes/m3. The average grade and total volume of the ore body is 36.36 % and 10,496,595 m3 respectively.  

scholarly journals On mapping seafloor mineral deposits with central loop transient electromagnetics

Geophysics ◽  
2012 ◽  
Vol 77 (3) ◽  
pp. E171-E184 ◽  
Author(s):  
Andrei Swidinsky ◽  
Sebastian Hölz ◽  
Marion Jegen
Keyword(s):  
Mineral Exploration ◽  
Extreme Case ◽  
Mineral Deposit ◽  
Ocean Floor ◽  
Mineral Deposits ◽  
Ore Deposit ◽  
Type Curves ◽  
Ore Body ◽  
Electromagnetic Methods ◽  
Central Loop

Electromagnetic methods are commonly employed in exploration for land-based mineral deposits. A suite of airborne, land, and borehole electromagnetic techniques consisting of different coil and dipole configurations have been developed over the last few decades for this purpose. In contrast, although the commercial value of marine mineral deposits has been recognized for decades, the development of suitable marine electromagnetic methods for mineral exploration at sea is still in its infancy. One particularly interesting electromagnetic method, which could be used to image a mineral deposit on the ocean floor, is the central loop configuration. Central loop systems consist of concentric transmitting and receiving loops of wire. While these types of systems are frequently used in land-based or airborne surveys, to our knowledge neither system has been used for marine mineral exploration. The advantages of using central loop systems at sea are twofold: (1) simplified navigation, because the transmitter and receiver are concentric, and (2) simplified operation because only one compact unit must be deployed. We produced layered seafloor type curves for two particular types of central loop methods: the in-loop and coincident loop configurations. In particular, we consider models inspired by real marine mineral exploration scenarios consisting of overburdens 0 to 5 m thick overlying a conductive ore body 5 to 30 m thick. Modeling and resolution analyses showed that, using a [Formula: see text] transmitting loop with 20 A of current, these two configurations are useful tools to determine the overburden depth to a conductive ore deposit and its thickness. In the most extreme case, absolute voltage errors on the order of 10 nV are required to resolve the base of a 30 m thick ore deposit. Whether such noise floors can be achieved in real marine environments remains to be seen.

Sur la notion de "types" de gisements metalliferes

1958 ◽  
Vol S6-VIII (3) ◽  
pp. 237-244
Author(s):  
Pierre Routhier
Keyword(s):  
Chemical Composition ◽  
Host Rock ◽  
Country Rock ◽  
Ore Deposits ◽  
Igneous Rocks ◽  
Ore Deposit ◽  
Ore Body ◽  
Enclosing Rocks

Abstract Limitations of existing classifications of ore deposits are examined, and a new "natural" classificationis proposed, based on "types." The types are based on the mineralogic and geologic characteristics of the ore deposit itself and of the host rock. Among the characteristics to be determined for the ore deposit itself are its hypogene paragenesis, superficial alteration, and the chemical composition and ore content of both the hypogene and supergene ore. The characteristics to be determined for the host rock relate to the lithology and stratigraphy of the enclosing rocks and the presence of contact alteration, if any; the form of the ore body in relation to the structure of the country rock; the nearby presence of igneous rocks; and age, if determinable. Descriptions can be completed by giving a list of examples of similar deposits with their age, if known, and pertinent genetic hypotheses.

Spatial evolution of Zn-Fe-Pb isotopes of sphalerite within a single ore body: A case study from the Dongshengmiao ore deposit, Inner Mongolia, China

2017 ◽  
Vol 53 (1) ◽  
pp. 55-65 ◽  
Author(s):  
Zhaofu Gao ◽  
Xiangkun Zhu ◽  
Jian Sun ◽  
Zhaohua Luo ◽  
Chuang Bao ◽  
...  
Keyword(s):  
Inner Mongolia ◽  
Pb Isotopes ◽  
Spatial Evolution ◽  
Ore Deposit ◽  
Ore Body

scholarly journals Peculiarities of the underground mining of high-grade iron ores in anomalous geological conditions

2019 ◽  
Vol 28 (4) ◽  
pp. 706-716
Author(s):  
Mykhailo V. Petlovanyi ◽  
Vladislav V. Ruskykh
Keyword(s):  
Iron Content ◽  
Underground Mining ◽  
Hanging Wall ◽  
Slope Angle ◽  
High Grade ◽  
Ore Deposit ◽  
Ore Body ◽  
Subsequent Decrease ◽  
Geological Conditions ◽  
The Difference

This paper is dedicated to research into the geological peculiarities, shape of the ore body and the occurrence of the host rocks in the hanging wall of the Pivdenno-Biloz- erske deposit , as well as their influence on the degrees and quality of high-grade iron ore extraction. It is noted that in the interval of 480 – 840 m depths, a decrease is observed in the stability of the natural and technogenic massif, which is caused by the increase in rock pressure with depth, the influence of blast- ing operations on the massif and the difference in geological conditions. This has led to the collapse of hanging wall rocks and backfill into the mined-out space of chambers in certain areas of the deposit, the dilution of the ore and deterioration of the operational state of the underground mine workings. Attention is focused on the causes and peculiarities of consequences of the collapse of the hanging wall rocks during ore mining, which reduce the technical and-economic indexes of the ore extraction from the chambers. A 3D-model of an ore deposit with complex structural framework has been developed, which makes it possible to visually observe in axonometric projection the geological peculiarities and the shape of the ore body. The parameters have been studied of mining chambers in the 640 – 740 m floor under different changing geological conditions of the ore deposit and hanging wall rocks occurrence – the northern, central and southern parts. The difference in the iron content in the mined ore relative to the initial iron content in the massif has been defined as an indicative criterion of the influence of changing conditions on the production quality. The reasons have been revealed which contribute to the collapse of the rocks and the subsequent decrease in the iron content of the mined ore in ore deposit areas dif- fering by their characteristics. It has been determined that within the central and half of the southern ore deposit parts with a length of 600 m, an anomalous geological zone is formed, the manifestation of which will be increased with the depth of mining. It was noted that within this zone, with the highest intensity and density of collapse of hanging wall rocks, the influence of decrease in the slope angle and change in the strike direction are of greatest priority, and such geological factors as a decrease in hardness, rock morphology, deposit thickness increase this influence significantly. To solve the problems of the hanging wall rocks’ stability, it is recommended to study the nature and direction of action of gravity forces on the stope chambers in the northern, central and southern parts, as well to search for scientific solutions in regard to changes in the geometric shapes of stope chambers and their spatial location, improving the order of reserves mining in terms of the ore deposit area, the rational order of breaking-out ore reserves in the chambers with changing mining and geological conditions of the fields’ development.

scholarly journals Morphological features of ore reserves of the Novo-Uchaly vms deposit (Southern Urals)

2020 ◽  
Vol 63 (2) ◽  
pp. 35-46
Author(s):  
A. V. Spirina ◽  
V. V. Makarov ◽  
I. B. Moiseev ◽  
I. V. Vikentyev
Keyword(s):  
Mineral Composition ◽  
Southern Urals ◽  
Ore Deposits ◽  
Processing Plant ◽  
The Southern Urals ◽  
Ore Deposit ◽  
Ore Body ◽  
Folded Structure ◽  
Gold Silver ◽  
Copper Zinc

Background. The Novo-Uchaly copper-zinc VMS deposit in the Southern Urals (54°10΄54˝N and 59°20΄45˝E) is represented by a steeply dipping lens of Eifelian volcanics (rhyodacites and basalts), which are crumpled into a strongly compressed anticlinal fold. The ore deposit is blind and localised at the convergence of felsic (bottom) and mafic (top) rocks. The deposit is located at depths of 550 m (in the northern part) and 1050 m (in the southern part). The deposit thickness reaches 186 m. The length along the strike and along the dip equals 1250 m and 900 m, respectively. The ore body is intruded by gabbro-diorite and gabbro-diabase dikes. The main ore minerals are pyrite, sphalerite and chalcopyrite, as well as non-metallic minerals, such as quartz, barite and calcite. Unlike most of the Ural VMS deposits, this deposit is the zinc subtype (Zn >> Cu). The ores are predominantly massive and solid sulphide, being banded or brecciated in some parts. The main elements extracted are copper, zinc and sulphur, but gold, silver, cadmium, indium, cobalt, nickel, selenium and tellurium are also obtained.Aim. To clarify the morphology of the ore deposit, to study the ore mineral composition of the upper horizons of its northern part and to determine the underlying reasons for the complex lenticular structure of the sulphide reserve.Materials and methods. In the period 2017—2019, employees of the Institute of Ore Deposits, Petrography, Mineralogy and Biochemistry of the Russian Academy of Sciences (IGEM RAS) together with geologists of the Uchaly Mining and Processing Plant carried out a geological and mineralogical mapping of the deposit in the course of exploration works.Results. The ore contours and mineral composition of the northern part of the ore body were significantly clarified. A series of dikes of variable morphology was identified. A comparison was made of the results with current theories about the structure of the ore deposit. Detailed geological sections were determined and illustrate the complex lenticular structure of the ore deposit complicated by pinch and swell areas. The deposit was formed by processes of dynamic metamorphism.Conclusion. The geological and mineralogical structure of the deposit determined in the study enabled us to propose a schematic reconstruction of the conditions leading to the formation of its folded structure. The findings will help to re-assess the reserves and improve the system of operational exploration and delineation.

Evaluation of the initial stressed state of rocks in the cryolitzone (on the example of Irokindinsky mining)

2020 ◽  
pp. 208-215
Author(s):  
E. L. Sosnovskaya ◽  
A. N. Avdeev
Keyword(s):  
Rock Mass ◽  
Objective Evaluation ◽  
Permafrost Zone ◽  
Initial Stresses ◽  
Rockburst Hazard ◽  
Ore Deposit ◽  
Research Results ◽  
Transition Zones ◽  
Gold Ore Deposit

In 2014-2017 at the Irokinda mine, due to the transition to new technological equipment, the thawing of permafrost rocks began, accompanied by manifestations of rock pressure. There was an urgent need to clarify the changed geotechnical conditions and evaluate the initial stresses of the rock mass. During the study, in situ stresses were measured for various cryogenic conditions of rocks: in permafrost, in transition zones of frozen rocks to thawed, thawed rocks. The measurements were made according the method of slotted relief based on the IM UB RAS by the author’s version of the segmented slot. It is established that in the Irokinda ore deposit rocks there is a change in the stress field structure in the process of both natural and anthropogenic rock melting. In the process of rock thawing vertical stresses increase slightly, horizontal stresses increase by 40-60%. The tectonic component of the premining stresses increases several times from -1,8 MPa to -22,9 MPa. The research results are confirmed by full-scale initial stresses measurements of a number of permafrost zone deposits: Mayskoye, Novo-Shirokinskoye, Konevinskoye. For an objective evaluation of the pre-mining stress-strain state of the deposits located in the permafrost zone, it is necessary to carry out their temperature zoning. To increase the safety of mining, it is recommended to use technological measures to prevent the thawing of the rock mass. Based on the research results, a Conclusion of rockburst hazard and gas-dynamic manifestations at the Irokinda gold ore deposit (2017) was written.

Ore-Controlling Structure of Fankou Pb-Zn Mineral Deposit in Guangdong Province, China

2013 ◽  
Vol 868 ◽  
pp. 30-33
Author(s):  
Ying Shu Li ◽  
Yi Ke Zhang ◽  
Tian Li ◽  
Dong Ming Yang ◽  
Da Qing He ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Guangdong Province ◽  
Mineral Deposit ◽  
Ore Deposit ◽  
Near Fault ◽  
Ore Body ◽  
Major Fault ◽  
Lead Zinc ◽  
Indoor And Outdoor ◽  
Comprehensive Study

Orefield structures of Fankou lead-zinc deposit in Guangdong province is complex and have been argued about for years. By means of comprehensive study of indoor and outdoor,The lambda-type structure made of major fault of F203 of strike northwest and branch fault of F3, F4 of strike northnortheast is ore-controlling structure, which not only controls the shape, the occurrence and spatial distribution of the ore body, but also controls the formation and distribution of the deposit.Key region of next prospecting is near fault of northnortheast direction of hangingwall block of the F203.Key words:Pb-Zn ore deposit;Ore-controlling structure;Fankou in Guangdong Province, China

Sign in / Sign up

Export Citation Format

Share Document