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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 19, Issue 4 - Dec 2006
Volume 19, Issue 3 - Sep 2006
Volume 19, Issue 2 - Jun 2006
Volume 19, Issue 1 - Mar 2006
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The Preliminary Study of the Secondary Precipitates from Samsanjeil and Sambong Mine, Goseong, Gyeongnam
Cho, Hyen-Goo ; Chang, Byoung-Jun ; Kim, Soon-Oh ; Choo, Chang-Oh ;
Journal of the Mineralogical Society of Korea, volume 19, issue 3, 2006, Pages 129~138
In this study, we identified the secondary precipitates from Samsan-jeil and Sambong mine, Goseong, Gyeongnam by means of scanning electron microscopy, electron probe microanalysis and X-ray powder diffraction analysis. Copper sulfide minerals had been produced from the mines during last few decades, however they are not worked. White and blue precipitates were found at the downstream of mine rock dump at Sambong mine and green one was at Samsan-jeil mine. The white precipitate covered the host rock surface with thickness of
, and is a kind of diatom with
in length and
in width. It is a species Fragilaria constuens, which is contained a order Pennales(pennate diatom) and lives in fresh water. The blue precipitate is the alteration product of chalcopyrite. It resultes in the increase in the ratio Cu:Fe from 5 to 13. The green precipitate has worm-like morphology with
in diameter and
in length. It is mainly composed of secondary copper sulfate such as woodwardite. However, it could be formed by the activity of microorganism, because the copper content is more than any secondary copper sulfate reported in copper sulfide mine. In order to identity the green precipitate exactly, the further research is needed.
Sulfide Mineralization in the Huronian Sediments in the Cobalt Area, Ontario, Canada
Kim, Won-Sa ;
Journal of the Mineralogical Society of Korea, volume 19, issue 3, 2006, Pages 139~151
Base metal sulfides occur in the Huronian sedimentary rocks that cover the Archean volcanic rocks in the Cobalt area, Ontario, Canada. They are mostly concentrated in the basal conglomerate which was formed in the pre-Huronian basin structure. Sulfide occurrence can be grouped as massive sulfide clasts in the basal and Coleman conglomerate, disseminated sulfides throughout the sediments, and disseminated sulfides near Ag-Co-Ni-As carbonate veins. Detrital mechanism can explain features such as angularity of sulfide fragments and graded bedding of dissemnated sulfides. Sulfides concentrated near carbonate veins are probably of hydrothermal origin. Nearby strata-bound type massive sulfide ore deposits and mineralized interflow units are the most probable sources for syngenetic sulfides. This is supported by the angularity of sulfide fragments, presence of massive sulfide boulders which are identical in mineralogy and texture to the strata-bound type sulfide deposits in the Archean basement, and a similar composition of sphalerite in the Archean volcanic rocks and Huronian sedimentary rocks. Some sulfide grains, especially in sandstones and argillites, were undergone recrystallization during the intrusion of the Nipissing diabase.
Fluid Inclusion Study of the Samcheonpo Amethyst Deposit of Kyongsangnamdo, Korea
Bae, Yun-Sue ; Yang, Kyoung-Hee ;
Journal of the Mineralogical Society of Korea, volume 19, issue 3, 2006, Pages 153~162
Fluid inclusions in amethyst from the Samcheonpo amethyst deposit of the Waryongsan area, Kyongnam generally grouped into four different types: Type I (liquid-rich and
), Type II (vapor-rich and
), Type III (halite-bearing,
), and Type IV (
). Type I, II, and III inclusions are confined in the lower part of the amethyst and Type IV in the upper, which indicates significant hydrothermal activity during the earliest stage of the amethyst growth or the solidus condition of granitic rocks. The earliest fluid exsolved from the crystallizing granitic magma formed Type IIIa which is spatially associated with silicate melt inclusions. The homogenization behavior of Type IIIa inclusions by dissolution of the halite crystal after the bubble disappearance indicates that Type IIIa inclusions were trapped at some relatively elevated pressure. Exsolution of Type IIIb, I, II forming fluids with gradual decrease in their salinity was followed. The last fluid was
fluid (Type IV), which is assumed to be derived by decarbonization reactions with the surrounding sedimentary rocks. It suggests that the fine-grained granitic rocks containing the Samcheonpo amethyst crystallized at the sub-solvus condition saturated with water and exsolved abundant water.
Clay Mineralogy and Geochemistry of a Sediment Core from the Seamount to the South of Antarctic Polar Front, Drake Passage
Jeong, Gi-Young ;
Journal of the Mineralogical Society of Korea, volume 19, issue 3, 2006, Pages 163~169
Mineralogy and geochemistry of the sediment core from the seamount (2710 m below the sea level) just south of the Antarctic Polar Front were examined to draw paleoceanographic information in glacial-interglacial cycles. Smectite was most abundant clay mineral associated with illite and chlorite. Its content was slightly higher below 170 cm, suggesting a boundary between isotope stage 4 and 5. Si, Zr, Cs, Th, REE,
show complete antithetical distribution with respect to
through the core.
minima at depths of 24, 136, and 176 cm are probably correlated with massive influx of ice-rafted debris during the advance of Antarctic ice shelves. Ni, Cu, and Ba show rather little correlation with
, suggesting their relation to biogenic debris, precipitation from seawater, or hydrothermal input. Particularly, Ba maxima tend to lag
maxima, probably due to rapid increase of productivity following deglaciation.
Evaluation of Heavy Metal Contamination in Streams within Samsanjeil and Sambong Cu Mining Area
Kim, Soon-Oh ; Jung, Young-Il ; Cho, Hyen-Goo ;
Journal of the Mineralogical Society of Korea, volume 19, issue 3, 2006, Pages 171~187
The status of heavy metal contamination was investigated using chemical analyses of stream waters and sediments obtained from Samsanjeil and Sambong Cu mining area in Goseong-gun, Gyeongsangnam-do. In addition, the degree and the environmental risk of heavy metal contamination in stream sediments was assessed through pollution index (Pl) and danger index (DI) based on total digestion by aqua regia and fractionation of heavy metal contaminants by sequential extraction, respectively. Not only the degree of heavy metal contamination was significantly higher in Samsanjeil area than in Sambong area, but its environmental risk was also revealed much more serious in Samsanjeil area than in Sambong area. The differences in status and level of contamination and environmental risk between both two mining areas may be attributed to existence of contamination source and geology. Acid mine drainage is continuously discharged and flows into the stream in Samsanjeil mining area, and it makes the heavy metal contamination in the stream more deteriorated than in Sambong mining area in which acid mine drainage is not produced. In addition, the geology of Samsanjeil mining area is mainly comprised of andesitic rocks including a small amount of calcite and having lower pH buffering capacity fer acid mine drainage, and it is likely that the heavy metal contamination cannot be naturally attenuated in streams. On the contrary, the main geology of Sambong mining area consists of pyroclastic sedimentary Goseong formation containing a high content of carbonates, particularly calcite, and it seems that these carbonates of high pH buffering capacity prevent the heavy metal contamination from proceeding downstream in stream within that area.
Kim, Young-Ho ; Hwang, Gil-Chan ; Cho, Hyen-Goo ;
Journal of the Mineralogical Society of Korea, volume 19, issue 3, 2006, Pages 189~195
Compression work on a pyrite powder has been carried out using energy dispersive X-ray diffraction (EDXRD) with Mao-Bell type diamond anvil cell (DAC) and synchrotron radiation(SR) at room temperature. It has been reported the bulk moduli of pyrite show the large variations depending on the experimental conditions as well as the apparatus used. Thus, two kinds of sample in different pressure transmitting media of both NaCl and MgO powder emerged in alcoholic fluids were subjected to measure their compressibilities. Bulk moduli thus obtained are 138.9 GPa and 198.2 GPa, respectively, and this result contradicts to the anticipated values according to the hydrostaticity conditions of the sample chamber. This might be due to the alcoholic fluids phase transition mainly with the side effects from the difference of both solid state detector (SSD) used and E*d value applied. All experiments were performed at the Beam Line 1B2 of Pohang Light Source (PLS).
Mineralization Environments and Evaluation of Resources Potentials for the Absorbent-functional Mineral Resources Occurred in the Coal-bearing Formation of the Janggi Group
Noh, Jin-Hwan ;
Journal of the Mineralogical Society of Korea, volume 19, issue 3, 2006, Pages 197~207
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.