 | | Journal (article/letter/editorial) | | Occurrence of Brown Ores in Kuroko-type Deposits in Japan Akira IMAI, Osamu ISHIZUKA*, Ryoichi YAMADA** and...so-called brown ore from the Kuroko-type deposits in Japan was examined. Brown ore specimens from the Kannondo...Fukazawa, Uchinotai, Kosaka (orebody unknown) and Nurukawa deposits have been found in the ore collection...occurs commonly in the Kuroko-type deposits in Japan, whereas its extent is limited. The brown ore is...the Kuroko-type deposits of the Fukazawa mine, northeast Japan (Tanimura et al., 1972; Tanimura, 1974; |  | | Journal (article/letter/editorial) | | the Doyashiki Kuroko Deposits, Hokuroku Basin, Japan Satoshi KITAZONO and Hirotomo UENO Department of...Science, Kagoshima University, Kagoshima 890-0065, Japan [e-mail: gsekita@moon.sci.kagoshima-u.ac.jp] Received...the Doyashiki Kuroko deposits, Hokuroku basin, Japan for the first time. Main ore minerals are sphalerite...digenite. Small amounts of enargite, wittichenite, electrum, covellite, bornite, marcasite and hematite are...FeS contents of sphalerite and Ag contents of electrum were 0.12 to 0.18 mol %, 39.0 to 39.6 atom %, |  | | 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) | | 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...1980), Ginzan deposits (containing native gold, electrum and native silver)(Sato et al., 1981) and Shakanai...were also found from the Inarizawa deposit and Nurukawa deposits during this study. Preliminary bulk chemical |  | | 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 |  | 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) | | grain size and fineness (1,000/Au/(Au+ Ag))of electrum(anyintermediate MicroanalyticTechniques composition...Horne depositin Quebec(Rice, 1934), the Mount electrum in addition to arsenopyriteand pyrite, to containsignificant...posits(Shimazaki, 1974;Yamada et al., 1987,1988), Each electrum grain observed was measuredusing theTilt Covedeposit...Manitoba(HealyandPetruk,1990).OneinAu, Ag, and Hg on electrum grains usinga Cameca tentionof thispaperisto supplement...summarizes atic mannerowingto a paucityof data on electrum gradeandtonnagedata,morphology, metamorphic 544 |  | | Journal (article/letter/editorial) | | 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...ore. Fig. 5. Lithostratigraphiccolumn of La Zarza Mine (Huelva) 2. The basal siliceous ore, into which...Gold in this ore type occurs as 3 10 micron-sized electrum grains, associated mainly with arsenopyrite, and |  | | Journal (article/letter/editorial) | | occurs dominantly as inclusions of native gold and electrum in pyrite and tetrahedrite. G o l d c o n c e...and 3.5 g/t Au. Gold occurs as native gold or electrum associated with galena or as inclusions in pyrite...district, Japan Variable. Gold occurs as electrum with silver-rich rims. Gold contents of the electrum vary...vary between SZ9 and 859. Electrum in the oko ( c o ~ r - r l c h } zone has a gold content of 959 to 969...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 |  | Glasby, G.P., Iizasa, K., Hannington, M., Kubota, H., Notsu, K. (2008) Mineralogy and composition of Kuroko deposits from northeastern Honshu and their possible modern analogues from the Izu-Ogasawara (Bonin) Arc south of Japan: Implications for mode of formation. Ore Geology Reviews, 34 (4) 547-560 doi:10.1016/j.oregeorev.2008.09.005 | Journal (article/letter/editorial) | | analogues from the Izu-Ogasawara (Bonin) Arc south of Japan: Implications for mode of formation G.P. Glasby...Germany Geological Survey of Japan, AIST, 1-1-3 Higashi, Tsukuba, Ibaraki 305, Japan c Department of Earth Sciences...of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-003, Japan b a r t i c l e i n f o Article history: Received... 1991. A new model for Kuroko-type deposits of Japan. Episodes 14, 246–251]. © 2008 Elsevier B.V. All...Introduction The Kuroko deposits of NE Honshu, Japan, are a key type deposit for the study of volcanogenic |  | 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 |  | Marumo, Katsumi, Urabe, Tetsuro, Goto, Akiko, Takano, Yoshinori, Nakaseama, Miwako (2008) Mineralogy and Isotope Geochemistry of Active Submarine Hydrothermal Field at Suiyo Seamount, Izu-Bonin Arc, West Pacific Ocean. Resource Geology, 58 (3) 220-248 doi:10.1111/j.1751-3928.2008.00059.x | Journal (article/letter/editorial) | | Ibaraki, Japan, 2Department of Earth and Planetary Science, University of Tokyo, Tokyo, Japan and 3Institute...Resources and Environment, AIST, Tsukuba, Ibaraki, Japan Abstract This report presents mineralogical, geochemical...Seamount in the Izu–Bonin Island Arc, south of Japan. This deposit is regarded as the first example of...Central 7, 1-1-1 Higashi, Tsukuba, Ibaraki 3058567, Japan. Email: k.marumo@aist.go.jp *Present address: Nagoya...Research, Furo-cho, Chikusaku, Nagoya, Japan. †Present address: Japan Agency for Marine-Earth Science and |  | | Journal (article/letter/editorial) | | Devonian Analogs of the Kuroko Deposits of NE Honshu, Japan Geoffrey P. Glasby1,2, Valery V. Maslennikov1, Irina...for Cu and Zn. The Kuroko deposits of NE Honshu, Japan, are the type deposits for the 432 Kuroko-type deposits...Kosaka-Uchinotai, Nurukawa, Mizusawa, Hikarizawa and Barbame mines located in the Akita Prefecture. These mines...chalcopyrite, tetrahedrite–tennantite, bornite and electrum and yellow ore of quartz, pyrite and chalcopyrite...of Kuroko deposits from 10 mines in NE Honshu, Japan, have been analyzed as part of a study to compare |  | | 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 |  | 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) | | ightcrystallographicand silver-bearingphaseis electrum(>20 wt % Ag, boundariesand morecomplicatedforms...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...gold-rich Reviewsin EconomicGeology,v. 1, p. 99-114. electrum-argentiteassemblages (Shimazaki,1974; Barton,P...Scott,S.D., Maliotis,G., Rona, kurokodeposits of Japan: Implications fortheoriginsof thehyP.A., andThompson |
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