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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
Editor in Chief :
Volume & Issues
Volume 22, Issue 4 - Dec 2009
Volume 22, Issue 3 - Sep 2009
Volume 22, Issue 2 - Jun 2009
Volume 22, Issue 1 - Mar 2009
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Quantitative X-ray Diffraction Analysis of the Gyeonggi Bay Surface Sediments
Moon, Dong-Hyeok ; Cho, Hyen-Goo ; Kim, Soon-Oh ; Yi, Hi-Il ; Do, Jin-Young ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 279~288
Mineral compositions of the Gyeonggi Bay surface sediments were determined using the high resolution X-ray diffractometer and Siroquant v. 3.0 program. Surface sediments are composed of rock forming minerals (quartz 63.8%, plagioclase 12.9%, alkali feldspar 11.7%, muscovite 4.3%, amphibole 1.2%, biotite 0.5% on average), clay minerals (illite 2.4%, chlorite 1.4%, kaolinite 0.4%) and carbonate minerals (calcite 0.1%, aragonite 0.3%). Coarse sediments are high in the northern, southern and central parts of the study area, whereas fine sediments are high in the northern and southern parts of the central area. Coarse sediments have relatively a high quartz content in the northern part, and relatively high plagioclase and muscovite contents in the southern part of the study area. In the southern part and the northern part of central area, fine sediments have relatively a high illite content, and chlorite and kaolinite contents, respectively.
Phosphate Desorption of Kaolinite KGa-1b (Source Clay)
Cho, Hyen-Goo ; Kim, Soo-Oh ; Choo, Chang-Oh ; Do, Jin-Young ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 289~295
The characteristics of phosphate desorption on kaolinite was studied by batch adsorptiondesorption experiments. Desorption procedure was carried out through sequential extraction method at pH 4. The phosphorous contents were measured using UV-VIS-IR spectrophotometer with 820 nm wavelength. The adsorption-desorption reaction of P on kaolinite was irreversible, and most of adsorbed P on kaolinite were not easily dissolved to aqueous solution, but may might be fixed on kaolinite surface. The desorption isotherms were well fitted with the Freundlich and Temkin equations in the case of short reaction and long reaction time, respectively. The desorption reaction was divided into the early fast reaction and the later slow reaction. The percentage of desorption generally decreased with increasing adsorbed P concentration and increasing desorption reaction time.
Mineralogical Characteristics and Designation of Key Beds for the Effective Surveys of the Jeonnam Pyrophyllite Deposits
Yoo, Jang-Han ; Kim, Yong-Ug ; Lee, Gill-Jae ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 297~305
Ores of the Jeonnam pyrophyllite province mainly consist of not only pyrophyllite but also kaolinite, and they usually contain minor amounts of muscovite and quartz. We usually call them as porcelaneous stones which usually show lower grade characteristics in the viewpoint of Korean nonmetallic industries. Mineralogical studies for the ores and their intimate formations revealed that another kind of clay minerals could have been produced from the volcanic sediments with similar ages and compositions. Corundum is commoner than the diaspore in the pyrophyllite deposits, and so diaspore can be regarded as one of temporary minerals from which corundum would be finally formed. Kaolinite deposits contain neither diaspore nor corundum, but alunites produced by an advanced argillic alteration are often observed in the upper portions of the kaolin ores. The lowest formation interbedded with pyrophyllite and/or kaolinite ores usually contain purple tuff bed on the uppermost part, and in ascending order, siliceous formation, fine ash tuff and lapillistone are found in the study areas. As ages are becoming younger, amounts of pyrophyllite and kaolinite are radically decreased, or disappeared completely. On the other hand, content of muscovite is slightly increased, and those of plagioclase feldspars and quartz are found to have been preserved from the original rocks during alteration process. Most of ore bodies show rather well bedded formations which are easily discernable in the outcrops, but more effective discremination is desirable where rather massive ores exist. Siliceous beds and purple tuff ones on the upper part of ore bodies would be useful as marker horizons or key beds which have distinct lithologies and extensions.
Motukoreaite and Quintinite-3T from Sinyangri Formation, Jeju Island, Korea
Jeong, Gi-Young ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 307~312
Motukoreaite and quintinite-3T, Mg-Al layered double hydroxides, were found in the Sinyangri Formation of Jeju Island. They fill the pores of basaltic volcaniclastic sediments in globular and botryoidal aggregates of fine platy particles. Globular aggregates of quintinite-3T were crusted with the parallel overgrowth of motukoreaite plates. X-ray diffraction data and chemical composition are consistent with those reported in literature, while the Mg/Al ratio of motukoreaite is higher. Structural formula of motukoreaite and quintinite-3T derived from electron microprobe analysis are
, respectively. Motukoreaite and quintinite-3T were formed by reaction between seawater and basaltic glass, and contributed to the cementation and lithification of the volcaniclastic sediments.
-Scale Pore Structures of Porous Earth Materials: NMR Micro-imaging Study
Lee, Bum-Han ; Lee, Sung-Keun ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 313~324
We explore the effect of particle shape and size on 3-dimensional (3D) network and pore structure of porous earth materials composed of glass beads and silica gel using NMR micro-imaging in order to gain better insights into relationship between structure and the corresponding hydrologic and seismological properties. The 3D micro-imaging data for the model porous networks show that the specific surface area, porosity, and permeability range from 2.5 to
, from 0.21 to 0.38, and from 11.6 to 892.3 D (Darcy), respectively, which are typical values for unconsolidated sands. The relationships among specific surface area, porosity, and permeability of the porous media are relatively well explained with the Kozeny equation. Cube counting fractal dimension analysis shows that fractal dimension increases from ~2.5－2.6 to 3.0 with increasing specific surface area from 2.5 to
, with the data also suggesting the effect of porosity. Specific surface area, porosity, permeability, and cube counting fractal dimension for the natural mongolian sandstone are
, 0.017, 30.9 mD, and 1.59, respectively. The current results highlight that NMR micro-imaging, together with detailed statistical analyses can be useful to characterize 3D pore structures of various porous earth materials and be potentially effective in accounting for transport properties and seismic wave velocity and attenuation of diverse porous media in earth crust and interiors.
Compression Study on a Synthetic Goethite
Kim, Young-Ho ; Hwang, Gil-Chan ; Kim, Soon-Oh ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 325~330
High pressure x-ray diffraction study was performed on a synthetic FeOOH-goethite to check out its compressibility at room temperature. Angular dispersive x-ray diffraction method was employed using a symmetrical diamond anvil cell with synchrotron radiation. Bulk modulus was determined to be 222.8 GPa under assumption of
of 4.0. This value is too high comparing with the previously published values from natural samples. It has been discussed the possible causes to incur its high bulk modulus value according to the production conditions.
Arsenic Distribution and Solubility in Groundwater of Okcheon Area
Chon, Chul-Min ; Kim, Kue-Young ; Koh, Dong-Chon ; Choi, Mi-Jung ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 331~342
Groundwater samples were collected from the bedrock aquifers related with Okcheon metasedimentary rocks. Arsenic (As) concentrations in the samples varied between 0.0051 and 0.887 mg/L, with an average of 0.0248. Cations and anions of groundwaters had no relationship with As contents as well as with spatial distribution of geology in the area. Pyrite, chalcopyrite and arsenopyrite in the core samples of the monitoring wells were identified in thin section, X-ray diffraction (XRD) and electron probe microscope analysis (EPMA). It was suggested that these minerals are responsible for the As in groundwater. The groundwater showed saturations with respect to calcite
, dolomite (CaMg
) and Magnesite
activities in the groundwater samples were close to
solubility isotherms, indicating that the maximum As contents in groundwater are secondly controlled by the precipitation and dissolution of carbonate minerals due to alkaline and oxic nature of the groundwater (pe+pH>10).
Probing Atomic Structure of Quarternary Aluminosilicate Glasses using Solid-state NMR
Park, Sun-Young ; Lee, Sung-Keun ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 343~352
High-resolution Solid-state NMR provides element specific and quantitative information and also resolves, otherwise overlapping atomic configurations in multi-component non-crystalline silicates. Here we report the preliminary results on the effect of composition on the structure of CMAS (CaO-MgO-
) silicate glasses, as a model system for basaltic magmas, using the high-resolution 1D and 2D solid-state NMR. The
MAS NMR spectra for the CMAS silicate glasses show that four-coordinated Al is predominant, demonstrating that
is network forming cation. The peak position moves toward lower frequency about 4.7 ppm with increasing
due to an increase in
(4Si) fraction with increasing Si content, indicating that Al are surrounded only by bridging oxygen.
MAS NMR spectra for
glasses qualitatively suggest that NBO fraction in the former is smaller than that in
3QMAS NMR spectrum of model quaternary aluminosilicate glass resolved distinct bridging and non-bridging oxygen environments, atomic structure for natural magmas can also be potentially probed using high-resolution 3QMAS NMR.
Ability of the Natural Abrasives Recovered from Sludge
Cho, Sung-Baek ; Seo, Myeong-Deok ; Cho, Keon-Joon ; Lee, Su-Jeong ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 353~358
The ability of natural abrasives which were recovered from CRT glass polishing process was evaluated. Comparing the center line average roughness values of a glass polished with new pumice (Ra =
) and with new garnet (Ra =
), the glass surface polished with the recycled pumice and the garnet had less pits on the surface with smaller Ra values (Ra =
for recycled pumice and Ra = 0.029 for recycled garnet). Recycled rouge contains amorphous glass fragments so that it should be used as a cement replacement rather than recycle into an abrasive. Nnatural abrasives, pumice and garnet powder, which are used in CRT glass polishing process can be recycled into abrasives so that it can help to minimize costs and environmental impact from the production of abrasives and the disposal of waste sludge.
A Mineralogical Study on the Arsenic Behavior in the Tailings of Nakdong Mine
Lee, Woo-Chun ; Cho, Hyen-Goo ; Kim, Young-Ho ; Kim, Soon-Oh ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 359~370
Arsenic and heavy metals leached out as a result of oxidation of tailings exposed to the surface pose a serious environmental contamination of mine areas. This study investigated how arsenic behavior is controlled by a variety of processes, such as oxidation of sulfides and formation or alteration of secondary minerals, based on mineralogical methods. The study was carried out using the tailing samples obtained from Nakdong mine located in Jeongseongun, Gangwondo. After separating magnetic and non-magnetic minerals using pretreated tailing samples, each mineral sample was classified according to their colors and metallic lusters observed by the stereoscopic microscope. Subsequently, the mineralogical properties were determined using various instrumental analyses, such as x-ray diffractometer (XRD), energy dispersive spectroscopy (EDS), and electron probe micro analyzer (EPMA). The literature review confirmed that various ore minerals were identified in the Nakdong ore deposits. In this study, however, there were observed a few original ore minerals as well as secondary and/or tertiary minerals newly formed as a result of weathering including oxidation. In particular, we did not recognize pyrrhotite which has been known to originally exist in a large abundance, but peculiarly colloform-type iron (oxy)hydroxides were identified, which indicates most of pyrrhotite has been altered by rapid weathering due to its large reactivity. In addition, a secondary scorodites filling the fissure of weathered primary arsenopyrites were identified, and it is speculated that arsenic is immobilized through such a alteration reaction. Also, we observed tertiary iron (oxy)hydroxides were formed as a result of re-alteration of secondary jarosites, and it suggests that the environment of tailing has been changed to high pH from low pH condition which was initiated and developed by oxidation reactions of diverse primary ore minerals. The environmental change is mainly attributed to interactions between secondary minerals and parental rocks around the mine. As a result, not only was the stability of secondary minerals declined, but tertiary minerals were newly formed. As such a process goes through, arsenic which was immobilized is likely to re-dissolve and disperse into surrounding environments.
Quality Evaluation of the High-purity Limestones for Lime Manufacturing Based on the Measurements of Shape Factor and Grain Boundary Frequency
Noh, Jin-Hwan ; Lee, Hyun-Chul ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 371~383
Crystallinity and textural relations, which are crucial in terms of the quality concept of high-purity limestone, have not been effectively applicable to the limestone evaluation as crude ore due to the difficulties in precise measurements. To overcome the above, as a new method of ore characterization, a measurement of shape factor and grain boundary frequency utilizing the image analysing system was adopted in this study. Some domestic limestones used for lime manufacturing were investigated by such a quality evaluation method, and its results are discussed and correlated each other samples. As the result, even though calcite contents of crude ore, i.e., limestone grade and its crystal size are similar, quality of manufactured lime is remarkably different depending on the degree of shape factor and grain boundary frequency. In other words, as the more irregular in crystal shape and the higher the grain boundary frequency, the manufactured quick lime became more superior in all terms of lime quality such as rate of calcination, porosity, reactivity, sintering and decrepitation effect. However, because the quick lime become easily overheated in case of relatively higher degree in shape factor and grain boundary effect, a technology minimizing heating time is necessary for the manufacturing of high quality lime. In limestone industry, such a ore characterization method will be much more reasonable than the conventional method by measurement of mean size, because the method may collectively comprise crystal shape and other textural factors which can not be numerically evaluated in the past.
Spectroscopic Characteristics of Tourmalines from Antandrokomby, Madagascar
Lee, Sung ; Ahn, Yong-Kil ; Seo, Jin-Gyo ; Park, Jong-Wan ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 385~393
The spectroscopic characteristics of Madagascar tourmaline were investigated by UV-Vis and FTIR spectroscopy. Physical features were similar to other region's tourmalines. The green and blue samples showed strong absorption band in the 714~743 nm due to
, pink samples showed strong absorption band in the 510~530 nm due to
, brown samples showed strong absorption at 324 nm due to
IVCT and the colorless samples only revealed weak absorption at 406~413 nm or no absorptions due to low quantity of Mn. Combination of the stretching and bending mode cationic hydroxyl units (metal-OH) are observed in the 4300~4500
. The parallel tube-shaped inclusions which contain hematite were detected generally. This investigation revealed that Cu was not detected but Fe and Mn were detected in the Madagascar tourmalines, and the various colors appear according to the amount of those impurity elements.
Characterization of Sun Spangle Formation in the Transparent Baltic Amber by Heat Treatment
Chung, Hyo-Jin ; Seo, Jin-Gyo ; Park, Jong-Wan ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 395~405
The maturity of amber matrix and inclusion was studied to explore the effect of heat treatment on the formation of the sun spangle in the transparent Baltic amber from Gdansk, Poland. Optical microscope revealed two types of inclusions in the original amber samples. The inclusions in the amber which had sun spangle were dramatically expanded by the heat treatment, comparing to those without sun spangle which contains fissure and shows different refractive index. The amber sample which didn't show sun spangle after the heat treatment showed a strong carbon related peak in TOF-SIMS spectra and weak oxygen related peak. it means that the maturity of this amber sample is comparatively higher than the one with spangle. The two amber samples show similar IR spectra before the heat treatment. However, the amber which had sun spangle exhibited an additional 1019
absorption peak and a more intense 887
peak. The different chemical compositions between the two types of amber is believed to be due to the different absorption spectra between 1000~600
. According to the study of DSC analysis, the two samples show different DSC profiles. Although they have the same geological origin, their geological ages are different and have different chemical compositions. Thus, they exhibited different behavior after the heat treatment. The formation of sun spangle seemed to depend on the difference in the heat expansion rate of amber matrix with different maturity and chemical compositions.
Study on the Spectroscopic Characteristics of Irradiated Diamonds
Shon, Shoo-Hack ; Kim, Bea-Seoub ; Jang, Yun-Deuk ; Kim, Jong-Rang ; Kim, Jong-Gun ; Kim, Jeong-Jin ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 407~415
The change of the nitrogen-related centers and the color change of electron beam irradiated type Ia natural diamonds were studied. The irradiation of diamond with high-energy electron beam creates lattice defects which are neutral single vacancy
. It increased with increasing electron dose density. The B aggregation seems to produce vacancies more easily than the A aggregation, because diamonds with more B aggregation have more platelets, which are sufficient breakable size by electron beam. Greenish blue color of irradiated diamond is changed to darker with increasing electron dose density. GR1 centers with a zero-phonon line at 741 nm and phonon sidebands make transmit visible light at 530 nm and it moves to 500 nm with higher intensity of GR1 centers.
Situation of the Supply-demand and Potentiality of REE Resources in South Korea
Koh, Sang-Mo ;
Journal of the Mineralogical Society of Korea, volume 22, issue 4, 2009, Pages 417~422