• Journal of the Korean Association of Geographic Information Studies
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• v.13 no.3
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• pp.1-13
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• 2010

The aim of this study is to analyze gold-silver mineral potential in the Taebaeksan mineralized district, Korea using a Geographic Information System(GIS) and an artificial neural network(ANN) model. A spatial database considering Au and Ag deposit, geology, fault structure and geochemical data of As, Cu, Mo, Ni, Pb and Zn was constructed for the study area using the GIS. The 46 Au and Ag mineral deposits were randomly divided into a training set to analyze mineral potential using ANN and a test set to verify mineral potential map. In the ANN model, training sets for areas with mineral deposits and without them were selected randomly from the lower 10% areas of the mineral potential index derived from existing mineral deposits using likelihood ratio. To support the reliability of the Au-Ag mineral potential map, some of rock samples were selected in the upper 5% areas of the mineral potential index without known deposits and analyzed for Au, Ag, As, Cu, Pb and Zn. As the result, No. 4 of sample exhibited more enrichments of all elements than the others.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2003.04a
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• pp.187-190
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• 2003

태백산 광화대는 1960년대부터 광물자원에 대한 조사 및 개발이 활발하게 이루어지고 있는 지역으로 지질관련 자료들이 많이 축적되어 있으므로 자료의 이용이 용이하고 예측 모델링을 적용한 결과와 기존 결과의 비교가 가능한 지역이다. 본 연구에서는 태백산 광화대 지역의 금속광상의 부존가능지역 예측을 위하여 지화학 자료를 이용하여 주제도를 작성하였다. 부존가능지역 예측을 위하여 사용한 기법은 GIS 기반의 예측 기법 중하나인 Weights of Evidence 모델링 기법으로 연구지역에 시범 적용함으로써 국내 환경에의 적용 가능성을 검토하고 구조선과 광상간의 공간적 상관성을 확인하였다.

• 한국지구과학회:학술대회논문집
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• 2006.02a
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• pp.219-224
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• 2006

이 논문에서는 기존 알려진 통합 목표가 존재하지 않거나 적은 경우에 적용 가능한 목표 유도형 공간통합 방법으로 Dempster-Shafer 이론을 적용하였다. 이 이론은 확률의 하한과 상한 개념을 도입하여 통합 결과의 불확실성을 표현할 수 있으며, 탐사자료의 범위가 일치하지 않은 경우에도 효율적으로 통합이 가능한 장점이 있다. 광물자원 부존가능성도 작성의 사례연구를 수행한 결과, 기존 광산 주변에서 높은 부존 가능성값을 얻을 수 있었으며, 추후 객관적인 자료 표현 및 목표 유도형 통합에의 적용이 필요하다.

• TTA Journal
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• s.132
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• pp.116-117
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• 2010

강원도 양양 일대 폐(廢) 철광석 광산에 희소 광물인 희토류가 매장되어 상업 생산에 착수한다는 소식이다. 매장량이 매우 적은 희소금속의 하나로, 워낙 희귀해 세분화조차 번거로워 붙여진 이름, 희토류, 희토류로 촉발된 '보이지 않는 전쟁'을 생각할 때, 부존자원이 빈약한 우리나라 땅에서 전해진 이 새로운 가능성은 반가울 수밖에 없다. 희토류는 전기자동차와 풍력발전기, LCD, 미사일 등을 만드는 핵심 원료이다.

• Economic and Environmental Geology
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• v.37 no.1
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• pp.1-19
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• 2004

Metallic deposits in Korea have a variety of genetic types such as hydrothermal veins, skarns, hydrothermal replacement and alaskite deposits and so on. Geological, mineralogical and geochemical features including host rock, wall-rock alteration, ore and gangue mineralogy, mineral texture and secondary mineralogy related to weathering process control the environmental signatures of mining areas. The environmental signatures of metallic deposits closed from early 1970s to late 1990s in Korea show complicate geochemistry and mineralogy due to step weathering of primary and secondary minerals such as oxidation-precipitation-remobilization. The potentiality of low pH and high heavy metal Concentration s from acid mine drainage is great in base-metal deposits associated with polymetallic mineralization, breccia-pipe type and Cretaceous hydrothermal Au veins with the amount of pyrite whereas skam, hydrothermal replacement, hydrothermal Cu and Au-Ag vein deposits are in low contamination possibility. The geoenvironmental models reflecting the various geologic features closely relate to disuibution of sulfides and carbonates and their ratios and finally effect on characteristics of environmental signatures such as heavy metal species and their concentrations in acid mine drainage.

• Journal of the Mineralogical Society of Korea
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• v.19 no.3 s.49
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• pp.197-207
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• 2006

In the coal-bearing formations of the Janggi Group, which are reported as typical clastic sediments, several beds of volcaniclastic rocks are actually found in the Yeongil area. The coal-bearing formations generally exhibit alternating lithologic characteristics of pyroclastic and epiclastic sedimentary facies. Tuff and tuffaceous sandstone rich in pumice fragments are characteristic in the coal-bearing fermations. Diagenetic minerals found in the pyroclastic rocks of the upper and lower coal-bearing formations are montmorillonite, clinoptilolite, opal-CT, and quartz. Several tuffaceous beds correspond to the low-grade ores of zeolites and bentonite, and moreover, these ores mostly occur as thin beds less than 1 m in thickness. Thus, the potential of altered tuffaceous rocks as the resources typical of zeolite and bentonite seems to be low. However, based on mineral composition and CEC determinations, it can be evaluated that these tuffaceous rocks mostly have the promising potential for utilization as the absorbent-functional mineral resources such as acid clays, if these low-grade ores plus adjacent tuffaceous rocks are collectively exploited.

• Geophysics and Geophysical Exploration
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• v.17 no.4
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• pp.209-215
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• 2014

In order to develop a new mineral exploration technique, a study was carried out about the potential mapping of Moisan area using SIP (Spectral Induced Polarization) data. The SIP inversion results were classified according to the geological regions, and the distribution characteristics of resistivity and phase values of SIP data were analyzed at the ore region. Based on the characteristics of SIP of ore bodies, we performed 3D potential mapping of Moisan area. The analyzed potential map was verified using that the locations and patterns of high potential regions of the results are well matched with those of the known ore bodies. If we get the higher spatial resolution SIP data, the potential mapping technique using SIP data can be effectively applied to the estimation of mining deposit.

• Journal of the Mineralogical Society of Korea
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• v.25 no.1
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• pp.51-61
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• 2012

터키는 알파인 조산대 내의 테티얀 광상대(Tethyan belt)에 위치한다. 이 광상대는 섭입과, 충돌, 열개 운동으로 형성되었고 후기 백악기에서 신생대 화성암류와 오피올라이트(ophiolite)와 관련된다. 터키 지표의 5.5%를 덮고 있는 변성지괴는 북동부의 스트란야(Strandja), 카쟉(Kazdag), 서부의 멘데레스(Menderes), 중부의 키르세히르(Kirsehir), 남동부의 비틀리스(Bitlis)와 포투르지(Poturge)에 분포한다(그림 3과 4). 비교적 연구가 많이 진행된 서부지역의 변성지괴 연구결과에 따르면 변성작용연대는 선캠브리아기에서 올리고세이다. 변성상은 녹색편암상과 각섬암상에서 에콜로자이트상과 백립암상에 이른다(Yigit, 2009). 상기 여러 지괴는 여러 번에 걸쳐 변성작용을 겪었다. 서부의 멘데레스 지괴는 다섯 개의 변성상을 보여주고 있으며, 두 번째 변성작용까지는 알파인 조산운동 이전의 시기이다. 다양한 지질과 지체구조는 터키의 다양한 광상의 부존 가능성을 가능케 한다. 주요자원인 금-동-몰리브덴 광상은 주로 후기 백악기에서 신생대의 화산호와 관련된 반암동과 천열수 광상이다. 동-연-아연 광상은 VMS 중 쿠로코와 사이프러스형 광상과 MVT 광상에 속한다. 알려진 크롬광상의 대부분은 포디폼광상이며 알파인-오피올라이트 암석과 관련된다.

• Resources Recycling
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• v.22 no.6
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• pp.73-80
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• 2013

Marine mineral resources are classified into submarine and seawater mineral resources. In seawater, huge amounts of useful minerals, such as uranium, lithium, magnesium, aluminum, zinc, iron, silver, copper, vanadium, nickel, titanium and cobalt are present. If the rare metals recovery technology from seawater is developed, the commercialization of the precess will be possible. For the 21st century, countries rich in resoures tend to weaponize the resources, according to the depletion of reserves and quality degradation of metal resources in the land. Therefore, Korea that relies on imports for most of the metal resources, should focus on the research and development of the rare metals recovery technology from seawater by using the geographical characteristics of the country that is on three sea-sides.

• Korean Journal of Remote Sensing
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• v.23 no.4
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• pp.287-295
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• 2007

A mineral potential map showing the distributions of potential areas for exploration of undiscovered mineral deposits is a kind of predictive thematic maps. For any predictive thematic maps to show reasonably significant prediction results, validation information on prediction capability should be provided in addition to spatial locations of high potential areas. The objective of this paper is to apply prediction rate curves to the estimation of prediction probability of future discovery. A case study for Au-Ag mineral potential mapping using geochemical data sets is carried out to illustrate procedures for estimating prediction probability and for an interpretation. Through the case study, quantitative information including prediction rates and probability obtained by prediction rate curves was found to be very important for the interpretation of prediction results. It is expected that such quantitative validation information would be effectively used as basic information for cost analysis of exploration and environmental impact assessment.