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SEIICHIRO UEHARA Last modified date:2018.06.21

Assistant Professor / Mineral Science
Department of Earth and Planetary Sciences
Faculty of Sciences


Graduate School
Undergraduate School
Other Organization


E-Mail
Homepage
http://mineral2.geo.kyushu-u.ac.jp/uehara
Academic Degree
Doctor of Science
Field of Specialization
mineralogy
Research
Research Interests
  • Serpentine mineralogy and crystal chemistry
    keyword : antigorite, chrysotile lizardie
    1985.04.
Academic Activities
Papers
1. 白勢 洋平, 上原 誠一郎, Microtexture investigation of amblygonite–montebrasite series with lacroixite: Characteristics and formation process in pegmatites., American Mineralogist, 103, 1, 75-84, 2018.01.
2. 延寿 里美, 上原 誠一郎, Abuite, CaAl2(PO4)2F2, a new mineral from the Hinomaru–Nago mine, Yamaguchi Prefecture, Japan, Journal of Mineralogical and Petrological Sciences, 10.2465/jmps.170131, 112, 3, 109-115, 2017.06, [URL].
3. Y. Miyoshi, K. Shimada, H. Sato, S. Uehara and J. Ishibashi, Convenient analysis of chemical composition of clay fraction of sediment by electron probe microanalyzer, Geochemical Journal, 10.2343/geochemj.2.0479, 51, 6, 583-588, 2017.12.
4. Nagaya, Takayoshi, Wallis, Simon R., Seto, Yusuke, Miyake, Akira, 上原 誠一郎, Minimizing and quantifying mis-indexing in electron backscatter diffraction (EBSD) determinations of antigorite crystal directions, Journal of Structural Geology, 10.1016/j.jsg.2016.12.006, 95, 127-141, 2017.02.
5. 延寿 里美, 上原 誠一郎, Yukonite and wallkilldellite-(Fe) from Kiura mine, Oita Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, Journal of Mineralogical and Petrological Sciences, http://dx.doi.org/10.2465/jmps.141022d, 110, 2, 150-155, 2015.06, [URL].
6. 白勢 洋平, 上原 誠一郎, Secondary phosphates in montebrasite and amblygonite from Nagatare, Fukuoka Prefecture, Japan
, Journal of Mineralogical and Petrological Sciences , http://dx.doi.org/10.2465/jmps.131022d, 109, 2, 103-108, 2014.04, [URL], Montebrasite and amblygonite in an Li–Cs–Ta enriched (LCT) pegmatite from Nagatare, Fukuoka Prefecture, Japan, contain various alteration minerals: fluorapatite, crandallite, goyazite, waylandite, wardite, viitaniemiite, morinite, muscovite, lepidolite, and cookeite. They are associated with lacroixite, quartz, and topaz. Among these minerals, wardite, viitaniemiite, morinite, and lacroixite are newly discovered in Japan. The secondary phosphates and fine–grained mica form fine veins along cleavages and composition planes of polysynthetic twins in the montebrasite and amblygonite. Lacroixite has a different texture from other phosphates, which suggests a possibility of exsolution within montebrasite–amblygonite series. Various secondary phosphates show Ca–, Na– and Sr–metasomatism with leaching of Li, and the formation of low–F montebrasite from montebrasite–amblygonite series indicates an F–OH exchange. However, fluorapatite, morinite, and viitaniemiite crystallized in an F–rich environment. Montebrasite–amblygonite series minerals undergo an acidic alteration to muscovite in the last stage, which is the same process that other Li minerals undergo, such as tourmaline and spodumene..
7. Miyoshi, Youko; Ishibashi, Jun-ichiro; Faure, Kevin; Maeto, Kotaro; Matsukura, Seiya; Omura, Akiko; Shimada, Kazuhiko; Sato, Hiroshi; Sakamoto, Takeaki; Uehara, Seiichiro; Chiba, Hitoshi; Yamanaka, Toshiro, Mg-rich clay mineral formation associated with marine shallow-water hydrothermal activity in an arc volcanic caldera setting, CHEMICAL GEOLOGY , 10.1016/j.chemgeo.2013.05.033, 355, 28-44, 2013.09, [URL].
8. 白勢 洋平, 上原 誠一郎, Li tourmaline from Nagatare, Fukuoka Prefecture, Japan

, Journal of Mineralogical and Petrological Sciences , http://dx.doi.org/10.2465/jmps.121022e, 108, 4, 238-243 , 2013.09, [URL], Tourmaline in a complex type granitic pegmatite of an Li-Cs-Ta enriched (LCT) family from Nagatare pegmatite, Fukuoka Prefecture, Japan, were classified into five types: type-A (black), type-B (indigo), type-C (light blue-pink), type-D (pink), and type-E (pink-light blue), on the basis of localities, associated minerals, color, and texture. Type-C shows color zoning textures of a light blue core and a pink rim. In contrast, type-E has a pink core and a light blue rim. A total of 29 samples were analyzed by an electron microprobe analyzer (EPMA) and an X-ray diffractometer (XRD). Significant substitution of (Li + Al) for Fe is observed at the Y sites. The minor cations at the Y site, such as Mg, Mn, Zn and Ti, were also characteristic on each type. Large amounts of Na were detected at the X site in type-B; the Na contents decreased with increasing (Li + Al) in types-C, D, and E. F contents were well correlated with X-site charge except in type-A. The mineral species from the Nagatare pegmatite were schorl, fluor-schorl, elbaite, fluor-elbaite, and rossmanite. The unit-cell parameters were in the range of rossmanite, elbaite, and schorl. The tourmaline from the Nagatare pegmatite has similar major chemical components but different minor elements such as Zn and Mn as compared to the tourmaline from other LCT pegmatites. The intermediate fractionated tourmaline containing Zn (0.00-0.20 apfu) and Mn (0.11-0.38 apfu) is characteristic of the Nagatare pegmatite. In type-E, the rim showed greater Fe and Mn contents than the core, differing from the trend of the melt development on types-B and C. Furthermore, the parts rich in Al, Li, and OH with considerable site vacancy were selectively replaced by muscovite. These features indicate that several stages of alterations occurred during the late stages of the pegmatite formation.

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9. 高井 康宏, 上原 誠一郎, Hizenite-(Y), Ca2Y6(CO3)11·14H2O, a new mineral in alkali olivine basalt from Mitsukoshi, Karatsu, Saga Prefecture, Japan
Yasuhiro TAKAI, Seiichiro UEHARA

, Journal of Mineralogical and Petrological Sciences , http://dx.doi.org/10.2465/jmps.12095, 108, 3, 161-165, 2013.07, [URL], Hizenite-(Y), ideal formula Ca2Y6(CO3)11·14H2O, occurs in druse of alkali olivine basalt at Mitsukoshi, Karatsu, Saga Prefecture, Japan. It occurs as a platy crystal and forms spherical aggregates. Hizenite-(Y) closely associates with lokkaite-(Y), tengerite-(Y), and kimuraite-(Y). It is orthorhombic, a = 6.295(1) Å, b = 9.089(2) Å, c = 63.49(1) Å, V = 3632(1) Å3, Z = 4. Hizenite-(Y) is white in color with vitreous to silky luster. The density is 2.98 g/cm3 (calc), and there is a perfect cleavage on {001}. The strongest lines in the X-ray powder diffraction pattern are [d (I/I0hkl] 10.63 (100) 006, 6.384 (77) 0·0·10, 3.962 (51) 0·0·16, 3.821 (27) 029, 1·0·13, 2.060 (23) 306, 0·4·13, 15.57 (20) 004.

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10. 上原 誠一郎, 白勢 洋平, Namibite and hechtsbergite from the Nagatare mine, Fukuoka Prefecture, Japan
Seiichiro UEHARA, Yohei SHIROSE, Journal of Mineralogical and Petrological Sciences , http://dx.doi.org/10.2465/jmps.121022d, 108, 2, 105-119, 2013.05, [URL], Namibite [Cu(BiO)2VO4(OH)] and hechtsbergite [Bi2O(VO4)(OH)] were found with clinobisvanite, waylandite, eulytite, beyerite and bismutite at the Nagatare mine, Fukuoka Prefecture, Japan. This assemblage occurs as secondary minerals and forms crusts and euhedral crystals associated with lepidolite, quartz, albite and cookeite. Namibite forms a dark green powder with pearly luster. Hechtsbergite is yellow, and is found as fine isolated crystals or aggregates. The compositions of namibite and hechtsbergite, determined by electron microprobe, are Cu0.98Bi1.92Al0.04O2 (V0.96Si0.07P0.02)O4 (OH) and Bi1.94Al0.01O(V1.00Si0.04)O4 (OH), respectively. The unit-cell parameters are a = 6.216(4), b = 7.384(6), c = 7.467(6) Å, α = 90.19(8), β = 108.65(7), γ = 107.36(8)°, V = 308.1(3) Å3 for namibite, and a = 6.954(5), b = 7.539(8), c = 10.870(9) Å, β = 106.87(5)°, V = 545.4(6) Å3 for hechtsbergite.

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11. Yasuhiro TAKAI and Seiichiro UEHARA, Rhabdophane-(Y), YPO4·H2O, a new mineral in alkali olivine basalt from Hinodematsu, Genkai-cho, Saga Prefecture, Japan


, Journal of Mineralogical and Petrological Sciences , http://dx.doi.org/10.2465/jmps.111020j, 107, 2, 110-113, 2012.05, [URL], Rhabdophane-(Y), ideal formulaYPO4·H2O, occurs in a druse of the Higashimatsuura basalt at Hinodematsu, Genkai-cho, Saga Prefecture, Japan. It occurs as short rod-like crystals and forms radial aggregates. Rhabdophane-(Y) is hexagonal, P6222, a = 6.959(2) Å, c = 6.384(2) Å, V = 267.7(1) Å3, Z = 3. It is yellowish white to yellowish brown in color with a silky to dull luster. The density is 4.54 g/cm3 (calc.). The strongest lines in the X-ray powder diffraction pattern are [d (I/I0) hkl] 2.821 (100) 102, 3.013 (77) 200, 6.026 (76) 100, 4.385 (47) 101, 3.480 (44) 110, 2.127 (28) 003, and 1.854 (26) 212.
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12. Seiichiro UEHARA, Yasuhiro TAKAI, Yohei SHIROSE and Yuki FUJII , TES microcalorimeter SEM-EDS system for rare-earth elements analyses

, Journal of Mineralogical and Petrological Sciences , http://dx.doi.org/10.2465/jmps.111020d, 107, 2, 105-109, 2012.05, [URL].
13. Yohei SHIROSE and Seiichiro UEHARA , Philipsburgite from the Yamato mine, Yamaguchi Prefecture, Japan
, Journal of Mineralogical and Petrological Sciences , 106, 3, 153-157 , 2011.06, [URL].
14. Ken-ichi Hirauchi, Ikuo Katayama, Seiichiro Uehara, Masaaki Miyahara, Yasuhiro Takai , Inhibition of subduction thrust earthquakes by low-temperature plastic flow in serpentine , Earth and Planetary Science Letters , 295, 349–357, 2010.05.
15. Yoshihiro Kuwahara and Seiichiro Uehara , AFM Study on Surface Microtopography, Morphology and Crystal Growth of Hydrothermal Illite in Izumiyama Pottery Stone from Arita, Saga Prefecture, Japan , The Open Mineralogy Journal, Vol 2, pp.34-47 , 2008.05.
16. Miyahara M. and Uehara S, Two-dimensional high-resolution elemental mapping of phyllosilicates - Application of ADF-STEM with EDS analysis, The 16th International Microscopy Congress, Proceedings Vol. 3, p1885, 2006.09.
17. Uehara, S. and Wicks, F. J, Structure and Microchemistry of 15-sectored Polygonal Serpentine from TEM and STEM-EDS analysis, The 16th International Microscopy Congress, Vol. 3, p1886, 2006.09.
18. Uehara, S. and Wicks, F. J., Detailed Structure and Microchemistry of 15-sectored Polygonal Serpentine. , 19th General Meeting of the International Mineralogical Association (IMA2006-Kobe), Abstracts p150., 2006.07.
19. Miyamoto S., Uehara S., Sasoh M., Sato M., Toyahara M., Idemitsu, K. and Matsumura S, Characterization of Cement Alteration Process by Transmission Electron Microscopy with high spatial resolution. Journal of Nuclear Science and Technology, Journal of Nuclear Science and Technology,, 43, 1370-1378., 2006.03.
20. Kuwahara, Y., Uehara, S. and Aoki, Y., Atomic Force Microscopy of Hydrothermail illite in Izumiyama Pottery stone from Arita, Saga Prefecture, Japan, Clays and Clay Minerals, Vol. 49, No. 4, pp. 300-309., 2001.06.
21. Hirasa, K. and Uehara, S., Hydrothermal Histry of the Izumiyama Pottery Stone Deposite Inferred from Microtexture and Microstructure Analysis of Illite by SEM and TEM., Resource Geology, Special Issue, 113-121, 20, 113-122., 1999.09.
22. Uehara, S., TEM and XRD study of antigorite superstructures., Canadian Mineralogist, 36, 1595-1605, 36, 1179-1189., 1998.12.
23. Uehara, S. and ., Antigorite with large supercell from Saganoseki, Oita Prefecture, Japan., Can. Mineral., 32, 93-103, 32, 93-103., 1994.01.
24. Uehara, S. and Shirozu, H., Variations in chemical composition and structural properties of antigorites., Mineral. Jour.,, (1985) 12, 299-318., 1985.12.
Works, Software and Database
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Presentations
1. 延寿 里美, 上原 誠一郎, TEM OBSERVATION OF ORTHO-TYPE POLYGONAL SERPENTINE AND ORTHOCHRYSOTILE
, ICC, 2017.07.
2. 白勢洋平, 上原 誠一郎, Alteration of Li-tourmaline from Nagatare pegmatite, Fukuoka Prefecture, Japan, 7th International Symposium on Granitic Pegmatites, 2015.06.
3. 白勢洋平, 上原 誠一郎, Fine texture of montebrasite-amblygonite series and lacroixite, 7th International Symposium on Granitic Pegmatites, 2015.06.
4. 白勢 洋平, 上原 誠一郎, Montebrasite and amblygonite from Nagatare, Fukuoka Prefecture, Japan, IMA2014, 2014.09.
5. 上原 誠一郎, 白勢 洋平, 山口 海, A TES microcalorimeter EDS-SEMsystem for silicate and other minerals, IMA2014, 2014.09.
6. 山口 海, 上原 誠一郎, Awaruite in serpentinites from Oshima Peninsula, Fukui Prefecture, Japan, 日本地球惑星科学連合大会, 2014.04.
7. 上原 誠一郎, 白勢洋平, Chemical Variation of Li Tourmaline from Nagatare Pegmatite, Fukuoka Prefecture, Japan, 6th International Symposium on Granitic Pegmatites, 2013.05.
8. 上原 誠一郎, 白勢洋平, Namibite and hechtsbergite from the Nagatare mine, Fukuoka Prefecture, Japan, 6th International Symposium on Granitic Pegmatites, 2013.05.
9. 白勢洋平, 上原 誠一郎, Compositional variation and paragenesis of Li tourmaline from Nagatare Pegmatite, Fukuoka Prefecture, Japan, the Joint Annual Meeting of the Geological Association of Canada and the Mineralogical Association of Canada, 2013.05.
10. Two-dimensional high-resolution elemental mapping of phyllosilicates - Application of ADF-STEM with EDS analysis -.
11. Structure and Microchemistry of 15-sectored Polygonal Serpentine from TEM and STEM-EDS analysis..
12. Rare Earth Carbonates and an Unknown Ca-Y Carbonate Mineral in the Higashimatsuura basalts..