|초록||경남 밀양-영산지역 금속광상 정밀탐사: A detail study on the geology and ore deposits of Miryang claim No.1 claim No.31 and Yeongsan claim No.110 in Kyeongnam province had carried out in 1998. Geophysical exploration and drilling exploration (3 drill holes with 410 m of total length) had carried out in 1997 and the result of drilling exploration was 346,896M/T of Cu-Pb-Zn ore reserves, and also recommended that more drilling is needed to recognize the extended anomaly area. But this year the drilling schedule was canceled due to complicated administration procedure. But the origin of limestone body was studied that it was formed as algal stromatolite in big lake of Kyeongsang basin in Cretaceous time. Miryang claim No.31 area is well known Miyang mine before, and 5 tunnel prospecting have done in this mine. High grade of Pb-Zn ore deposits are embedded in and along the fault zones and are replaced in carbonate rocks of Cretaceous Yuchon group. Ore minerals are galena and sphalerite which were accompanied with quartz in vein type deposits and especially sphalerite with epidote is dominated in replacement type deposits. Yeongsan claim No.110 area was explorated for network type gold and copper deposits in Cretaceous biotite granite. The vein width of network type deposits are various in 0.5-5cm. Ore minerals are chalcopyrite, galena and sphalerite. The mine owner is working now for aggregate instead of gold and copper ores. It is expected that deep seated hidden high grade ore bodies in this area
서산 철마산지역 화강편마암질암내에 배태하는 희유원소 광화작용: Geology of the studied area consists of Precambrian metasediments and Paleo alkaline igneous rocks. Based on the petrochemistry, the granite-gneissic rock is classified into alkaline rocks such as trachyte and trachyandesite. The chondrite-normalized REE patterns show the LREE enrichment and HREE depletion with strong negative Eu anomaly, which indicates that it was crystallized under high oxygen fugacity condition. Seosan REE deposit is the low grade allanite, titanite and lithium-mica(?) type embedded in granite-gneissic rock, which overlaided concordantly Precambrian iron formation deposit. The REE are mainly La, Ce, Pr, Nd, Y and Li. REE ores are relatively concentrated in alkaline feldspar-dominated part of granite-gneissic rock, and ore grade of the part is as follows; Total REE(R₂O₃) 0.049-0.2%, Li 91-438ppm and Th 114-166ppm
서산 철마산지역 희유원소 광물자원 물리탐사: Geophysical survey area is Yongjeon-Ri, Taeann-Goon, Chungcheng Nam-Do. The airborne radioactive data collected in 1980 suggests the thorium (Th) anomalous zone. In order to determine the distribution of this Th anomalous zone and the correlation of the Th anomalous zone and iron deposit in detail, surface radioactive and magnetic surveys were carried out at the area in May, 1998. The radioactive data measured at total, K, U, and Th windows show that there are three radioactive anomalous zones in the survey area. The largest distribution of the anomalous zone occurs at the vicinity of Mt. Cheolma. The north-south extent and east-west extent of the anomalous zone are about 500 and 200 m, respectively. The magnetic residual intensities with diurnal correction are in the range of -200 and 400 gamma. The contour of the compensated magnetic data indicates that the magnetic anomalous zone is strongly correlated with the distribution of the radioactive anomalous zone shown at the vicinity of Mt. Cheolma
광물자원탐사 시스템을 위한 데이터 베이스 구축방안: Nowadays, the geological data for mineral exploration include geological map, geophysical and geochemical data, mineral occurrence data, airphotos, satellite imagery, lithogeochemistry, trace element geochemistry, mass-balance calculation, etc.. As data banks get bigger, analyzing therm become more difficult and demands the interpreter to handle many variables at the same time. However, GIS application for mineral exploration may be used to integrate and analyze all different types of data, and make prediction about the mineral potential of selected area. The database design, which logically sets the base structure and organization of the database, is performed by considering the users requirement, the relations between various data, and the relations between data and application field. In this study, we propose a method of creating the database for mineral resource management system and show the presence of anomalies which may be indicative of economic mineral concentrations around Weondong mine
|키워드||밀양, 영산, 금속광상, 탐사, 서산, 철마산, 화강편마암질암, 희유원소, 광화작용, 물리탐사, 광물자원탐사, 금속광물, 밀양1호, 밀양31호, 영산110호, 태안군, 소원면, 희유금속, 토륨, 지질정보시스템, 호명|
서정률. (1998). 금속광물자원탐사연구 . 韓國資源硏究所.