한국광물학회지 (Journal of the Mineralogical Society of Korea)
- 제9권1호
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- Pages.43-53
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- 1996
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- 1225-309X(pISSN)
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- 2288-7172(eISSN)
하동 회장암체 내에서 산출하는 티탄철석의 결정화학
Crystal Chemistry of Ilmenite from the Hadong anorthosite Massif
초록
The detailed crystal chemistry of ilmenite from the Hadong massif was studied by the EPMA, M ssbauer spectroscopy, and Rietveld structural refinement using X-ray powder diffraction data. The ilmenite-bearing anorthosite shows complicated mineral assemblage which consists of plagioclase, clinopyroxene, hornblende, biotite, chlorite, apatite, allanite, and zircon. Anorthite is andesine in composition (Ab 28-57), and clinopyroxene drops in ferro-hypersthene (Fs 62-70). Ilmenite is trigonal symmetry with R space group, whose structure shows the alternation of Fe2+ (M1 site) octahedral layer and Ti (M2 site) layer along c axis. M ssbauer spectroscopy indicates that there are three doubles which assigned to couple of Fe2+(
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