[논문]장군광산과 동남광산에서 산출되는 부서라이트의 광물학적 특성

최헌수; 김수진; 김정진

[국내논문] 장군광산과 동남광산에서 산출되는 부서라이트의 광물학적 특성
Mineralogical Characterization of Buserite from the Janggun and Dongnam Mines, Korea 원문보기

韓國鑛物學會誌 = Journal of the Mineralogical Society of Korea, v.18 no.4 = no.46, 2005년, pp.259 - 266

최헌수 (한국자원연구원 해저자원연구부) , 김수진 (서울대학교 지구환경과학부) , 김정진 (안동대학교 지구환경과학과)

초록
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장군광산과 동남광산에서 산출되는 부서라이트에 대한 광물학적 특성을 연구하기 위하여 X-선 회절분석, 전자현미분석, 열분석 실험을 실시하였다. 장군 광산과 동남 광산에서의 부서라이트는 망간탄산염광상의 표성 산화 작용에 의해 형성된 산화망간 광석 내에 란시아이트와 함께 산출된다. 전자현미분석결과 장군광산 부서라이트의 화학 조성은 ($Ca_{0.78}Mg_{0.64}Mn^{2+}_{0.45})Mn^{4+}_{8.03}O_{18}\cdot13.2H_{2}O$이며 동남광산에서 산출되는 부서라이트는 ($Zn_{0.81}Ca_{0.77}Mg_{0.26}Mn^{4+}_{8.00}O_{18}\cdot10.9H_{2}O$이다. 장군광산의 부서라이트의 저면 격자 간격은 $40^{\circ}C$에서 $9.86\;{\AA}$이며, $90^{\circ}C$에서는 $7.60\;{\AA}$로 온도가 상승함에 따라 점진적으로 감소한다. 그러나 동남광산에서 $40^{\circ}C$부터 $90^{\circ}C$까지의 온도가 변화함에 따라 점진적인 회절선의 이동은 나타나지 않고 $9.67\;{\AA}$의 회절선의 강도는 감소하고 $7.53\;{\AA}$의 회절강도는 증가하는 경향을 보여준다.

Abstract ▼ AI-Helper

X-ray diffraction (XRD), Electron microprobe analyses (EPMA) and heating experiments were used for mineralogical characterization of natural buserites collected from the Janggun and Dongnam mines. They are closely associated with $7-{\AA}$ phase (usually rancieite) in manganese oxide ores of the supergene oxidation zones of manganese carbonate deposits. Electron microprobe analyses give the average formula $(Ca_{0.78}Mg_{0.64}Mn^{2+}\;_{0.45})Mn^{4+}\;_{8.03}O_{18}\cdot13.2H_{2}O\;and\;(Zn_{0.81}Ca_{0.77}Mg_{0.26})Mn^{4+}\;_{8.00}O_{18}\cdot10.9H_{2}O$ for buserite from the Janggun and the Dongnam mine, respectively. The basal reflection of buserite from the Janggun mine shifts continuously from $9.86\;{\AA}\;at\;40^{\circ}C\;to\;7.60\;{\AA}\;at\;90^{\circ}C$, but the buserite from the Dongnam mine shows tendency of decreasing intensity in the $9.67^{\circ}C$ peak and of increasing intensity in the $7.53\;{\AA}$ peak in the range of $40\∼90^{\circ}C$, showing no gradual shifting of peaks.

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문제 정의

The purpose of this work is to investigate the mineralogical characterization of buserite from Janggun and Dongnam mine. Natural buserites were investigated to know the exact configuration of interlayer waters and their roles in the 10 A -phyllomanganate minerals, by the methods of XRD, and chemical analysis.

제안 방법

From Janggun and Dongnam mine, many hand specimens were collected and studied under the stereomicroscope, but natural buserite were lim- itedly found. The natural buserites were carefully collected by hand picking under the stereomicroscope, and agitated in water by ultrasonic cleaner for further experiments. These hand- picked samples were checked by X-ray powder diffraction.

이론/모형

The natural buserite samples were too small to be analyzed by wet method. Therefore, chemical analysis and compositional distribution map of natural buserite was carried out by the wave dispersive method using the electron microprobe analyzer (EPMA), a JEOL Superprobe 733, at 20 kV with beam current of 20 nA and beam diameter of 1 pm. Data correction was performed using a ZAF correction procedure with a Link automation system.
Therefore, chemical analysis and compositional distribution map of natural buserite was carried out by the wave dispersive method using the electron microprobe analyzer (EPMA), a JEOL Superprobe 733, at 20 kV with beam current of 20 nA and beam diameter of 1 pm. Data correction was performed using a ZAF correction procedure with a Link automation system. Since Mn4+ and Mn2+ are not separated in the electron microprobe analysis, both values have been theoretically calculated from total Mn using the general formula of rancieite group by Kim (1991).
The purpose of this work is to investigate the mineralogical characterization of buserite from Janggun and Dongnam mine. Natural buserites were investigated to know the exact configuration of interlayer waters and their roles in the 10 A -phyllomanganate minerals, by the methods of XRD, and chemical analysis.

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