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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Mineralogical Society of Korea
Journal Basic Information
Journal DOI :
The Mineralogical Society of Korea
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Volume & Issues
Volume 18, Issue 4 - Dec 2005
Volume 18, Issue 3 - Sep 2005
Volume 18, Issue 2 - Jun 2005
Volume 18, Issue 1 - Mar 2005
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Dioctahedral Chlorite-Smectite Mixed-Layer Minerals in the Sandstones of the Ulleung Basin, Offshore SE Korea
Son Byeong-Kook ;
Journal of the Mineralogical Society of Korea, volume 18, issue 2, 2005, Pages 73~81
Mineralogical and chemical examinations were performed on chlorite-smectite mixed layer minerals that occur in the sandstones from a petroleum exploration well in the southern part of the Ulleung Basin. X-ray diffraction and chemical analyses show that the chlorite-smectite mixed layer mineral is tosudite, a 1 : 1 R1 ordered interstratification of chlorite and smectite with an overall dioctahedral character. This mineral is almost the same as the tosudite reported from hydrothermally-altered regions, which is rich in Li. This fact indicates that the tosudite area may be affected by hydrothermal events, because the studied well is located in the tectonically-deformed area, in which lots of trust faults and folds are present. In these respects, the formation of tosudite is probably due to the variable effect of hydrothermal fluids from the deeper part of the area.
Reaction Path Modeling of Granitic Cultural Properties and Its Implication for Preservation
Park Maeng-Eon ; Sung Kyu-Youl ;
Journal of the Mineralogical Society of Korea, volume 18, issue 2, 2005, Pages 83~92
Dissolution rate of minerals may differ from climates configuration, but weathering rate of feldspars is generally proved to be relatively higher The result of geochemical reaction modeling indicates the acid water of pH 4.5 excluding any other variables, was 2.3 times higher than that in ordinary rain of pH 5.7. This result proved that pH is very important factor in preservation of granite cultural properties. To prevent the weathering of stone cultural properties, weathering characteristics of stones should be studied first and constitution of dry environments, using water repellent or oil coating, isolating water which cause chemical weathering reaction like hydration and oxidization should be considered. Considering the long-term reactions between granite and rain, selection of materials, which can bring neutralization and non-oxidization conditions, are very important in using cleaning agents and biological controls.
Correlation Between Engineering Properties and Mineralogy of Clay Sediments in the Estuary of the Nakdong River
Lee Sonkap ; Kim Jin-Seop ; Um Jeong-Gi ; Hwang Jin-Yeon ;
Journal of the Mineralogical Society of Korea, volume 18, issue 2, 2005, Pages 93~107
The estuary of Nakdong River area including Noksan industrial complex and Busan New Port is composed of thick unconsolidified sediments containing abundant clay, and thus is a potential hazardous area of ground subsidence. We analyzed mineral compositions and geotechnical properties of the clay sediments that sampled from 4 boreholes of the area, and examined vertical variations and their correlations. The results showed correlations between some mineral constituents and geotechnical properties of clay sediments. A positive correlation showed between quartz content and wet unit weight, whereas a negative correlation showed between quartz content and liquid limit. Feldspar content and water content showed a negative correlation, whereas content of clay minerals and liquid limit showed a positive correlation. And also, there is a negative correlation between content of clay minerals and wet unit weight. Correlation equations are obtained from the multiple regression analyses among plastic index, content of clay mineral, smectite and clay fraction.
Characterization of Synthetic Na-beidellite
Ryu Gyoung-Won ; Chae Soo-Chun ; Bae In-Kook ; Choi Sang-Hoon ; Jang Young-Nam ;
Journal of the Mineralogical Society of Korea, volume 18, issue 2, 2005, Pages 109~115
Beidellite, a member of the smectite group, was synthesized hydrothermally from dickite. Physical and chemical properties of the synthetic Na-beidellite were characterized by the analytical methods of XRD, IR, TG, DTA, EDS, XRF and ICP. The result of Greene-Kelly test indicates that the synthesized smectite is Na-beidellite. IR spectrum of synthesized beidellite exhibited Al-O-H bending vibration at
which was observed particularly in pure beidellite. TGA analysis revealed that the synthesized Na-beidellite comprises
of water. DTA curve showed an endothermic peak at
due to dehydration reaction and peaks at
due to dehydroxylation reaction. The clay mineral was transformed to mullite and cristobalite at the temperature of
. The CEC value, Methylene Blue test and swelling capacity was determined to be
, respectively. The chemical composition of the synthesized phase was identified as
from EDS and XRF analyses.
Environmental Mineralogy on the Mg Effects of Chiller Precipitates
Kim Yoon Young ; Chang Sea Jung ; Jang Yun Deuk ; Kim Jeong Jin ;
Journal of the Mineralogical Society of Korea, volume 18, issue 2, 2005, Pages 117~125
It is common to find lots of organic and inorganic precipitates inside of industrial cooling system. Analytical instruments including ICP-AES, IC, XRD, and SEM were used to investigate the effects of application of Mg on reaction among coolant, precipitates and suspended matters within chiller system. Magnesium (Mg) has a decreasing effect on total dissolved material in the coolant suggesting a significant improvement of quality of coolant. Disappearance of most organic materials in the cooling devices also suggests an inhibitive effect on the growth of organic matters.
Mono-layer Compositional Analysis of Surface of Mineral Grains by Time-of-Flight Secondary-Ion Mass Spectrometry (TOF-SIMS)
Kong Bong Sung ; Chryssoulis Stephen ; Kim Joo Young ;
Journal of the Mineralogical Society of Korea, volume 18, issue 2, 2005, Pages 127~134
Although the bulk composition of materials is one of the major considerations in extractive metallurgy and environmental science, surface composition and topography control surface reactivity, and consequently play a major role in determining metallurgical phenomena and pollution by heavy metals and organics. An understanding of interaction mechanisms of different chemical species at the mineral surface in an aqueous media is very important in natural environment and metallurgical processing. X-ray photoelectron spectroscopy (XPS) has been used as an ex-situ analytical technique, but the material to be analyzed can be any size from
up to about 1 cm. It can also measure mixed solids powders, but it is impossible to ascertain the original source of resulting x-ray signals where they were emitted from, since it radiates and scans the macro sample surface area. The study demonstrated the ability of TOF-SIMS to detect individual organic species on the surfaces of mineral particles from plant samples and showed that the TOF-SIMS techniques provides an excellent tool for establishing the surface compositions of mineral grains and relative concentrations of chemicals on mineral species.
Supergene Alteration of High-Ca Limestone from the Pungchon Formation
Oh Sung Jin ; Kim Kyong Jin ; Noh Jin Hwan ;
Journal of the Mineralogical Society of Korea, volume 18, issue 2, 2005, Pages 135~144
In the high-Ca limestone zone of the Pungchon Formation of the Lower Chosun Supergroup, cryptocrystalline alterations with reddish brown color occur as fissure-fillings or coatings, which was originated from the upper formation, i. e., the Hwajeol Formation. The precipitates result in degradation and contamination of the high-Ca limestone ore in grade and quality, showing characteristic occurrence and mineral composition typical of suggesting a supergene origin. Chalcedonic quartz, kaolinite, illite, goethite and hematite are constituting a characteristic authigenic mineral assemblage and, in places, smectite is less commonly included in the weathering product. In addition to these authigenic phases, some detrital minerals such as mica and orthoclase constituting relatively coarser grains are also rarely present in the supergene alterations. A rather complex clay facies consisting of kaolinite, illite and smectite in the alterations seems to correspond to the typical clay composition of the reported residual pedogenic soils by limestone weathering. The cryptocrystalline weathering product is partly altered to stilbite, a characteristic hydrothermal zeolite, in places, by the hydrothermal contact of late stage. The time of formation and infiltration of the supergene alterations seems to correspond to the stage just after the epithermal alteration of the Pungchon Limestone, i. e., an early Jurassic age. The supergene alteration, which may imply the stage of uplifting, weathering and erosion of the Chosun Supergroup, appears to have undergone at an oxygen-rich environment in descending water of meteoric origin by means of a chemical leaching and diffusion.