鉱床の成因研究と探査への応用 - AIST

1 2017 12 7 @ Kenzo Sanematsu Study of ore genesis and its implications for exploration - .. (Ericsson, 2008; USGS, 2016; Arndt et al., 2017). ( ) (Rudnick & Gao, 2003) ( ) ( ) Crustal abundance from Rudnick & Gao (2003) ( ) (Hoshino et al.)

2 , 2016) ( ) Bayan Obo ( ) Mountain Pass ( ) REE 140 - 6500ppm ( 800ppm ) Th U ( , Wu et al., 1990; Huo, 1992; Bao & Zhao, 2008; Sanematsu and Watanabe, 2016) ( , 2005) CeO2Mn oxy-hydroxideREE3+Ce4+Ce4+ Sanematsu and Watanabe (2016) Rev. Econ. Geol. Ce (Peel et al., 2007)A: B: C: D: E: (Sanematsu Watanabe, 2016) Sanematsu andKon(2013)Bull.

3 Geol. (P2O5) P2O5 X (XRF) REE / REE) 100 (%) (%)Sanematsu et al. (2015)Jour. Asian Earth Sci. Monazite[(REE,Th)PO4] Serra Verde ( ) (measured)22 6m 10 90%( ?) (2017) - 2040 Roskill (2017)Roskill (2017) (kt) 2026 (USD/lb) DR CongoChina CanadaRussiaAustraliaZambiaCubaPhilippin esMadagascarNew Caledonia South AfricaUSAO thersEstimated mine production of cobalt (USGS, 2017) 66,000 t7,700 t7,300 t Distribution of representative lateritic Ni deposits (Berger et al.

4 , 2011) Ni/Co=7-52 Soroako Ni ( ) and % and % and % % % % CoNi/Co = 4 - 104 Soroako Ni ( )Soroako MLA (Mineral Liberation Analyzer) CavityChromiteSpinelGoethiteMineral Wt% Area% counts X-ray00 Total100 100 MLA (Mineral Liberation Analyzer) ( ) serpentine goethite Co Mn Lateritic profile of the Goro deposit in New Caledonia (Freyssinet et al., 2005) Ni-Co Co Co Mn Eramen Ni ( )Berong Ni Yangon Tagaung Taung ( )50 Mt @ Ni(?

5 China Nonferrous Metal MiningNi/Co ratio = ~70(San Win et al., 2014)Mwe Taung ( )42 Mt % Ni(Lynn Myint, 2016)North Mining InvestmentMwe Taung Ni ( ) ( ) 0 (LynnMyint, 2016) Mwe Taung Ni ( ) (SiO2>~74% ) Ce P2O5 Freyssinet, P., Butt, , Morris, and Piantone, P. (2005) Ore-formingprocesses related to lateritic weathering. Economic Geology 100th Anniversary, , M., Sanematsu, K., and Watanabe, Y. (2016) REE Mineralogy andResources.

6 Handbook on the Physics and Chemistry of Rare Earths, v. 49, , , Fontbot , L., Hedenquist, , Kesler, , Thompson, andWood, (2017) Future Global Mineral Resources, Geochemical Perspectives,6(1), p. , M. (2008) Trends in Mining, Present & Future. UNCTAD Secretary-General s High-Level Multi-Stakeholder Dialogue on Commodities in thecontext of UNCTAD XII 28-29 January Myint (2016) Feasibility Study on Development of Mwetaung LateriticNickel Deposit Teddim Township, Chin State, the Republic of the Union ofMyanmar. Presentation of Myanmar Mining Summit , , Singer, , Bliss, , and Moring, (2011) Ni-Co lateritedeposits of the world; database and grade and tonnage models: GeologicalSurvey Open-File Report 2011-1058, , , Finlayson, , Mcmahon, (2007) Updated world map of theK ppen-Geiger climate and Earth System SciencesDiscussions, European Geosciences Union, 2007, 11(5), USGS (2016) Mineral commodity summaries 2016.

7 Geological Survey, (2017) Mineral commodity summaries 2016. Geological Survey, (2017) Cobalt: Global Industry, Markets and Outlook to 2026. 13thEdition, Roskill Information Services Ltd., London, Win, Than Thay, Tin Lin and Win Myint Law (2014) A case study ofTagaung Taung nickl laterite deposit: From prospect to a mine. Unpublishedreport, , K. and Watanabe, Y. (2016) Characteristics and Genesis of Ion-Adsorption Type REE Deposits. In Rare and Critical Elements in Ore Deposits,Reviews in Economic Geology, v. 18, p. , K., Kon, Y. and Imai, A. (2015) Influence of phosphate on mobilityand adsorption of REEs during weathering of granites in Thailand.

8 JournalofAsian Earth Sciences, v. 111, p. , K. and Kon, Y. (2013) Geochemical characteristics determinedbymultiple extraction from ion-adsorption type REE ores in Dingnan County ofJiangxi Province, South China. Bulletin of Geological Survey of (11/12), 313-330. (2017) Serra Verge . ,67 (2).