 | | Journal (article/letter/editorial) | | Potential for Base and Precious To Metal Deposits in Japan 2020) Antonio ARRIBAS and Toshio MIZUTA Faculty...University, Akita, Japan Abstract There are no known porphyry copper deposits in Japan. Attempts were made...latter option. In this article, we focus on Akita Prefecture and the surrounding areas and consider the potential...northern Honshu and that it serves as a proxy for Japan in general. Akita is rich in mineralization styles...the late 1800s. Osarizawa, the last active vein mine, closed in 1978. Kuroko deposits, the main source |  | | Journal (article/letter/editorial) | | from the Ezuri Kuroko Deposit, Hokuroku District, Japan Kosei KOMURO and Yoshimichi KAJIWARA Institute...of Tsukuba, 1-1-1 Ten'nodai, Tsukuba 305-8571, Japan [e-mail: komuro@arsia.geo.tsukuba.ac.jp] Received...Ezuri Kuroko deposit in the Hokuroku district of Japan. X-ray microdiffractometry of this mineral gives...colusite from the No. 11 deposit of the Shakanai mine. Recently, however, after careful examination of...Kaminosawa Nos. 1 and 2 deposits of the Kamikita mine (Takeuchi et al., 1956), and also in the Au-rich |  | | Journal (article/letter/editorial) | | Ore” from the Fukasawa Kuroko Deposits, Northeast Japan: Its Characteristics and Formation Process Osamu...Fukasawa kuroko-type deposits, northern Honshu, Japan. As this type of ores also occur in the marginal...uppermost part of several other kuroko deposits in Japan, the formation of brown ore appears to be repeated...mineralization is widely observed within the brown ores. Silver and gold are especially concentrated in the barite...deposits (containing native gold, electrum and native silver)(Sato et al., 1981) and Shakanai deposits (Urashima |  | | Journal (article/letter/editorial) | | Survey of Canada, 490 rue de la Couronne, Quebec City, QC G1K 9A9, Canada e-mail: pmercier@nrcan.gc.ca...tonnages, as an open pit operation will typically mine large tonnages at lower grades, illustrating the...in Spain and Portugal. h Miocene Kuroko Belt in Japan. The geometric mean plus one standard deviation...Au 5 g/t Au Lomero-Poyatos 0.1 5 g/t Au 1 Nurukawa 6 g/t Au 0.01 0.01 0.1 1 10 100 0.01 Relative...in Spain and Portugal. h Miocene Kuroko Belt in Japan. The plots show that there are no clear relationships |  | | Journal (article/letter/editorial) | | Phoenicians, and Romans extracted copper, gold and silver from oxide and supergene-enriched zones overlying...copper ores (Neves Corvo/Portugal) and gold and silver from gossans (Rio Tinto and Tharsis). Precious...orebodies. The Filon Norte open pit is the only active mine and consists of two conformable orebodies, "Filon...sulfides and arsenopyrite exists. La Zarza The La Zarza Mine is situated some 30 km NE of Tharsis. The overturned...QUARTZITE LENSES CUPREOUS MASSIVE PYRITE BELOW LOWER MINE THRUST I====1 I ~ ~ ~ CARBONACEOUS BLACK S |  | | Journal (issue) | | would be bad for the industrial metals--chiefly silver and the platinum group metals. An increased inflation...hand, influence investors to buy gold, and perhaps silver. Another indicator worth looking at when watching...matters worse is the ongoing economic slump in Japan, which has led to a decline in jewelry fabrication...the West and mainly for jewelry and investment in Japan. Gold has been basking in the limelight once again...gold and silver, further price weakness cannot be ruled out. Thjs is even more so since Japan is not expected |  | Huston, David L., Bottrill, Ralph S., Creelman, Robert A., Zaw, Khin, Ramsden, Tony R., Rand, Sven W., Gemmell, J. Bruce, Jablonski, W., Sie, S. H., Large, Ross R. (1992) Geologic and geochemical controls on the mineralogy and grain size of gold-bearing phases, eastern Australian volcanic-hosted massive sulfide deposits. Economic Geology, 87 (3) 542-563 doi:10.2113/gsecongeo.87.3.542 | Journal (article/letter/editorial) | | AUSTRALIAN VHMS 543 electrumby combinationwith silver, which is releasedfrom sulfidemineralsin a similar...recrystallizedpyrite. Deposits of thezinc-lead-silver-gold association Electrumassociated with pyriteoccurstypicallyas...yses indituresof the Tertiary kurokodepositsof Japan,in- catethat goldmayalsobe presentasa traceelement...Size (•m) Zn - Au association Kosaka-Shakana• Nurukawa Pb-Zn ore Que River (42) MtCharter (7) Agincourt...South Hercules (41) Cu - Au association Hisaka Nurukawa stockwork MtChalmers (66) Waterloo(29) Mt Lyell(94) |  | | Journal (article/letter/editorial) | | occurrences in these deposits: (1) a gold-zinc-lead-silver association which is commonly found in the upper...and Au-rich skarns), whereas the gold-(zinc-lead-silver) association is developed in systems of low salinity...(1985) Kuroko district, Japan Variable. Gold occurs as electrum with silver-rich rims. Gold contents...kuroko (zlnc-lead) ore. Shimazaki (1974) Shakanai, Japan 8.73 m.t. at 1.49 CU, 3.4% Zn, 1.09 Pb, 44 g/t...the copper-rich ores. Hutchinson (1965) Nurukawa, Japan Not available. Gold occurs in paragenetically |  | Kamitani, M., Okumura, K., Teraoka, Y., Miyano, S., Watanabe, Y. (2007) Mineral Resources Map of East Asia, Geological Survey of Japan. | Map | | RESOURCES MAP OF EAST ASIA 2007 Geological Survey of Japan, AIST Masaharu KAMITANI*, Kimio OKUMURA*, Yoji TERAOKA*...their status of exploration and exploitation. In Japan and South Korea, many metallic mineral deposits...T. Nakashima and K. Sato, Geological Survey of Japan, National Institute of Advanced Industrial Science...Ishihara and H. Murakami, Geological Survey of Japan (AIST), who gave us valuable information on rare...Survey and Dr. M. Ogasawara, Geological Survey of Japan (AIST). Dr. K. Naito, formerly belonged to the International |  | | Journal (article/letter/editorial) | | Takara Volcanogenic Massive Sulfide Deposit, Central Japan Daigoro YAKUSHI and Mamoru ENJOJI Department of...Sciences, Waseda University, Shinjuku, Tokyo 169-8050, Japan [e-mail: dyakushi@akane.waseda.jp] Received on July...Mountain, the South Fossa Magna region, central Japan. The tectonic setting of the Misaka Mountain is...Mountain, the South Fossa Magna region, central Japan, about 90 km west of Tokyo (Fig. 1). Conventionally...typically occur in Miocene formation in northeast Japan (Sato, 1974). However, the geology of the Misaka |  | | Book | | been carried out. Epithermal vein-type deposits in Japan have also been well-studied. More than 1,000 papers...on Kuroko and epithermal vein-type deposits in Japan will be summarized in Chapter 1. The descriptions...study epithermal vein-type and Kuroko deposits in Japan. I learned from them an importance of the integration...fluid inclusion studies of vein-type deposits in Japan were especially valid and useful to writing this...On the origin of Kuroko of the Kosaka mine. J. Geol. Soc. Japan, 26, 107-132 (in Japanese). Ohmoto, H |  | | Journal (article/letter/editorial) | | shallow water volcanic environments (e.g., Nurukawa, Japan, Yamada et al. 1988; LaRondePenna and Bousquet...New Brunswick, McClenaghan et al. 2006, 2009; Ming Mine, New- foundland, Brueckner et al. 2014). In particular...Euhedral pyrite Galena Tetrahedrite Tennantite Silver-tetrahedrite Chalcopyrite Bornite As-rich colusite...——— ——— ——— Mineral phase Unidentified phases Silver telluride Nickel sulfide Cu-Ag sulfosalts Cu-V-Ge...to 8.77 wt.%, and up to 7.87 wt.%, respectively. Silver contents range up to 27.78 wt.% and correlate positively |  | | Book (volume) | | Field Trip Guide Book Vol. 6 MINERAL DEPOSITS OF JAPAN AND THE PHILIPPINES r QE 304 . A14 1992 v.6 The...Field Trip Guide Book Vol. 6 MINERAL DEPOSITS OF JAPAN AND THE PHILIPPINES The Society of Resource Geology...Tokyo 107, Japan 1992 29th IGC FIELD TRIP GUIDEBOOK Volume 6 : Mineral Deposits of Japan and the Philippines...building 9-6-41 Akasaka, Minato-ku, Tokyo 107, Japan Technical Editors Technical Reviewer: Editorial...Harufumi Noro Geological Survey of Japan 1-1-3 Higashi, Tsukuba 305, Japan Copyright Holder: The Society |  | | Journal (article/letter/editorial) | | included gn melt at 40 to 50 s and from 60 s. Fig. 5. Silver content in ppm versus the correlation coefficient...deposits (e.g. Mercier-Langevin et al., 2011). Silver is highly concentrated in gn (approximately 0.2...valuable information on their spatial distribution. Silver in py usually occurs as inclusions of Pb–Ag(–Bi)...Gold-bearing siliceous ore of the Nurukawa kuroko deposit, Akita prefecture Japan. Min. Geol. 37, 109–118. Yang |  | | Journal (article/letter/editorial) | | University, 6-10-1 Hakozaki, Fukuoka 812-8581, Japan [e-mail: imai@mine.kyushu-u.ac.jp] Received on December...southwestern Kuril arc (eastern Hokkaido), Northeast Japan arc (southwestern Hokkaido through northeastern...Honshu), Izu-Bonin arc, Kyushu-Palau ridge, Southwest Japan arc (northern Kyushu) and northern Ryukyu arc (southern...ilmenite-series granitic rocks in the Outer Zone of Southwest Japan (southern Kyushu) were also examined. Microphenocrystic...some rocks of the Northeast Japan arc, Izu-Bonin arc and Southwest Japan arc are significantly high. |  | Herzig, Peter M., Hannington, Mark D., Fouquet, Yves, von Stackelberg, Ulrich, Petersen, Sven (1993) Gold-rich polymetallic sulfides from the Lau back arc and implications for the geochemistry of gold in sea-floor hydrothermal systems of the Southwest Pacific. Economic Geology, 88 (8) 2182-2209 doi:10.2113/gsecongeo.88.8.2182 | Journal (article/letter/editorial) | | althoughsomegrainshavestraightcrystallographicand silver-bearingphaseis electrum(>20 wt % Ag, boundariesand...geologicsimilaritiesto the kurokomassivesulfidesin Japan(Halbachet al., 1989). Here, the volcanicsuitecomprises...rich (avg 1-3 ppm Au). In one gold-rich deposit (Nurukawa),gold occursin siliceouspyrite-chalcopyriteoresin...Scott,S.D., Maliotis,G., Rona, kurokodeposits of Japan: Implications fortheoriginsof thehyP.A., andThompson...the Kosaka Ore GeologyReviews,v. 4, p. 171-200. mine,Akita,Japan:MiningGeology,v. 28, p. 349-360 linJapaHuston |
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