 | | Journal (article/letter/editorial) | | of the Kuroko Deposits in Japan and Their Implications T. URABE Tokyo, Japan The most remarkable difference...difference in mineralogy of the Kuroko deposits in Japan is shown in their mineral assemblages of wall-rock...geology and mineralogy of the Kuroko deposits in Japan until now (WaTANABE 1973). In the last decade, volcanic...zone (siliceous ore), massive bedded pyrite-chalcopyrite ore zone (yellow ore), massive bedded sphalerite-galena-barite...O 9"" JAPAN e 0 SEA HONSHU lB. 200KM Fig. 1. Distribution of the Kuroko deposits in Japan. • - - |  | | 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...sphalerite, galena, tetrahedrite-tennantite, chalcopyrite and pyrite in microdruses and veinlets in the...Ezuri Kuroko deposit in the Hokuroku district of Japan. X-ray microdiffractometry of this mineral gives...1Sb0.2)Σ4.3Ge1.7S32 for that coexisting with chalcopyrite, consistent with the ideal formula of Cu24+xV2(As |  | | 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...occurrences from the Fukazawa, Matsumine, Ezuri, Shakanai, and Ginzan deposits were previously reported...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) | | Research, University, Misasa, Tottori 682-02, Okayama Japan (Received August 13, 1973) Abstract-The 5180 and...of gypsum from the Kuroko type mineralization in Japan mostly fall in narrow ranges from -6 to -8 and from...in certain stages of Ku roko mineralization at Shakanai. The 5180 and SD values of gypsum of the Tsutsumi...UKLONSKIIet al., 1966). Most of gypsum deposits in Japan are found in so called Kuroko deposits which...contemporaneous submarine volcanisms (Geol. Survey of Japan, 1960; TATSUMI et al., 1970). Geology and mineralogy |  | | Journal (article/letter/editorial) | | Suruey of lapan, Kqwada-cho 8, Shinjuku-ku, Tokyo, Japan Icnno SuNlcawa Institute ol Mineralogy, Petolo...negative striations collected from four localities in Japan. It is concluded that positive striations are associated...present study are those obtained at the Shakanai mine, Akita Prefecture. Crystals with negative striations...striations from a few other localities in Japan were also studied for reference. 0bservations Crystals with Negatioe...ShakanaiMine Shakanai mine, Akita Prefecture, is one of the famous Kuroko-type deposits in Japan, bearing |  | | Journal (article/letter/editorial) | | from the Ezuri Kuroko Deposit, Hokuroku District, Japan Kosei KOMURO, Naoaki AOKI* and Yoshimichi KAJIWARA...Tsukuba, 1-1-1 Ten’nodai, Tsukuba, Ibaraki 305-8571, Japan [e-mail: komuro@arsia.geo.tsukuba.ac.jp] * Deceased...black ore in the Ezuri Kuroko deposit, Hokuroku, Japan. By treating samples with conventional hydrofluoric...(“Tetsusekiei”) of the Kuroko deposit in the Kosaka mine (Ishikawa, 1964), similar fossil records have been...equivalent of the ferruginous chert) in the Ezuri mine (Ogushi et al., 1979; Ishikawa and Matsueda, 1985) |  | | 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...feeder zone of hydrothermal fluid. Overprinting chalcopyrite mineralization is not observed in the brown...electrum and native silver)(Sato et al., 1981) and Shakanai deposits (Urashima and Sato, 1968). In addition |  | | Journal (article/letter/editorial) | | isotopes Shimane in the Iwami Kuroko Japan Prefecture, MASAHIRO YAMAMOTO Department of Earth Science...Faculty of Science, Okayama University, Okayama 700, Japan (Received November 28, 1973; in revised form December...Northeast Japan (KAJIWARA and DATE, 1972). Other sulfide pairs including pyrite and/or chalcopyrite, however...explained by the assumption that pyrite and chalcopyrite were preferentially contaminated by biogenic...ores of the Shakanai No. 1 deposits and several other Kuroko deposits in Northeast Japan, computed isotope |  | | Journal (article/letter/editorial) | | the so-calledGreen Tuff basins of Tertiary age in Japan. They are the youngest,least modifiedexamplesknown...personalcommunicathe broad contextof metallogenicepochsin Japan. tions. We alsodiscuss the genesisof the felsicrocks...Takeuchi (1970). Grade of crude ore (%) Name of mine Kosaka l Hanaoka t Year of Size of ore de- ...in 1972 (per month) Crude ore -- 45,000 tons mine• 25 million tons Acid leached Cu = 70 tons 1.2...of 35 million tons = 50,000 tons Fukazawa t Shakanai • Kanayamazawa 1969 Manzaku 1969 190 X 190 |  | | Journal (article/letter/editorial) | | KurokoDeposits of theKosakaMine,Northeast Honshu, Japan Productsof SubmarineHot Springson Miocene Sea Floor...SATO Abstract The Kosaka mine is a productiveCu-Pb-Zn-Au-Ag mine in Japan and is locatedat the easternmargin...geologicevidence. Introduction productivemining districtsin Japan (Fig. 1). The Tn• Kuroko depositsare strataboundmassive...east of the mine (seeIsomi, 1968). They cropout about 1.5 km to the north of the mine and have been...probablyderivedfrom the Towadavolcano abmlt 10 km northeast of the mine area. , Geolopicstructure ; ,• Legend ['•"• |  | | Journal (article/letter/editorial) | | 1971 study of Shakanai No.l Prefecture, the Kuroko-ores deposits, Japan of Akita YOSHIMICHI KAJIWARA...Mineralogical of Education, Institute, Tokyo, Japan (ReceivedSeptember 13, 1970; in revisedform December...the Kuroko-oresfrom the No.I depositsof the Shakanai mine reveal that the S34Svalue of sulfide minera...in hydrothermal processes. In the present Shakanai mine, equilibria are physico-chemical paper...on these and data mechanism OUTLINE OF THE SHAKANAI No.1 an data of the No.1 involving attempt |  | Komuro, Kosei, Kubota, Hiroshi, Sato, Tokiyuki, Kajiwara, Yoshimichi, Tanimura, Shojiro (2004) Trace Fossils and Sulfur Isotopes in Mudstones around the Kuroko Deposits in the Hokuroku Basin, Northeast Japan: An Attempt to Delineate the Depositional Environment. Resource Geology, 54 (4) 425-436 doi:10.1111/j.1751-3928.2004.tb00218.x | Journal (article/letter/editorial) | | Kuroko Deposits in the Hokuroku Basin, Northeast Japan: An Attempt to Delineate the Depositional Environment...Geoscience, University of Tsukuba, Tsukuba 305-8571, Japan (Department of Earth Evolution Sciences, Graduate...Tsukuba, Tsukuba 305-8572, Japan) [e-mail: komuro@arsia.geo.tsukuba.ac.jp] * Japan Oil, Gas and Metals National...Metal Mining Agency of Japan), 1310 Omiya-cho, Saiwai-ku, Kawasaki 212-8554, Japan ** Department of Earth...Resource Science, Akita University, Akita, 010-8502, Japan *** Korokudai, Matsudo 271-0075, Japan Received on |  | | Journal (article/letter/editorial) | | ions of Fluid Inclusionsin the Kuroko Deposits,Japan HIROSHI OHMOTO AND ROB•.RT O. RYe. Abstract Initial...the Kuroko depositsin the Hokuroku district of Japan fall within a narrow range: $D =--26 to --18 per...massivebodies in rhyolitic tuff, tuff breccia, and chalcopyrite crystalsfrom the siliceous pyrite and mudstonesthat...in sericite), (3) water in fluid inclusions chalcopyrite(siliceousores). The stratiformmassive (with...Towada. The latter two typesof sampleswere ex(chalcopyrite+ pyrite), black ores (sphalerite+ pectedto providethe |  | | Journal (article/letter/editorial) | | type solution mineralization responsible in Japan YOSHIMICHI KAJIWARA Geological and Mineralogical...of Science, Tokyo Kyoiku University, Tokyo 112, Japan (Received August 12, 1972; in revised form February...geochemical data for the Kuroko type deposits in. Japan, an attempt has been made to calculate the concentrations...formations, particular ly in northeastern parts of Japan. In general, the deposits show a unique stratified...ore (quartz-pyrite-chalcopyrite ore), (2) pyrite ore and "yellow ore" (chalcopyrite-pyrite ore), (3) "black |  | | Journal (article/letter/editorial) | | the Modern Analog of Hokuroku Basin, Northeast Japan: Geotectonic Significance of the New Hydrothermal...National Corporation (JOGMEC), Kawasaki, Kanagawa, Japan, 2Japan Agency for Marine-Earth Science and Technology...Yokohama, Kanagawa, Japan and 3Ocean Research Institute, University of Tokyo, Tokyo, Japan Abstract A huge...Basin, which is representative of kuroko fields in Japan. The topographic features of the NMR and the Hokuroku...volcanic front. 1. Introduction In April 2003 Japan Oil, Gas and Metals National Corporation (JOGMEC) |  | | 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...basin, Japan for the first time. Main ore minerals are sphalerite, galena, pyrite, chalcopyrite, tetrahedrite-tennantite...the mineral assemblage of bornitepyrite and chalcopyrite, which shows high sulfur fugacity conditions...sedimentary basin in the Hokuroku district, Akita Prefecture, Japan (Fig. 1; Sato et al., 1974). In the Hokuroku |  | | Journal (article/letter/editorial) | | J. Japan. Assoc. Min. Petr. Econ. Geol. 78, 350-360, 1983 Miharaite in bornite-rich Ulsan mine, copper...Engineering, University, Ohkubo 3-4-1, Tokyo 160, Japan Miharaite stringer of has vein, Korea by The...(1:1) miharaite and at 31.3, occurring as mine, The 540nm: 33.0 Vickers hardness long it...ore rich in bornite from the Mihara mine, Okayama Prefecture, Japan and was named miharaite by Sugaki et...from a quartz-vein deposit of the Imo-oka mine, Okayama Prefecture. Subsequently, the third occurrence of |  | | Report (chapter) | | Sato G e o l o g i c a l S u r v e y o f Japan, T o k y o , Japan ( l a t e l y , Department of Geology...553.43/.44(52) Synopsis The Kuroko deposits of Japan are predominantly massive, stratiform sulphide ores...major constituents of the deposits are pyrite, chalcopyrite, sphalerite, galena, barite and quartz. They...of underlying magma. The Kuroko ore deposits of Japan are considered to be a prototype of heavy metal...constituent. The Green Tuff rocks are distributed on the Japan Sea side of the Japanese islands from Hokkaido to |  | Ogawa, Yasumasa, Shikazono, Naotatsu, Ishiyama, Daizo, Sato, Hinako, Mizuta, Toshio, Nakano, Takanori (2007) Mechanisms for anhydrite and gypsum formation in the Kuroko massive sulfide–sulfate deposits, north Japan. Mineralium Deposita, 42 (3) 219-233 doi:10.1007/s00126-006-0101-7 | Journal (article/letter/editorial) | | Kuroko massive sulfide–sulfate deposits, north Japan Yasumasa Ogawa & Naotatsu Shikazono & Daizo Ishiyama...Matsumine, Shakanai, and Hanaoka Kuroko-type massive sulfide–sulfate deposits of northern Japan to evaluate...3-14-1, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan e-mail: ogawa@geo.kankyo.tohoku.ac.jp D. Ishiyama...Resource Science, Akita University, Tegatagakuen-machi 1-1, Akita, Akita 010-8502, Japan T. Nakano Research...Nishi-iri, Kamigyo-ku, Kyotom, Kyoto, Kyoto 602-0875, Japan Present address: Y. Ogawa Graduate School of Environmental |  | | Journal (article/letter/editorial) | | 974-991 Isotopic Geochemistry of the ThermalWatersof Japan and its Bearingon the KurokoOre Solutions HITOSHI...Tertiary formationsunderlying mostvolcanicareasof Japan. The ore solutions responsiblefor Kuroko ore depositswere...isotopicfeaturesof certain 974 THE THERMAL WATERS OF JAPAN 975 types of ore solutions(Hall and Friedman 1963;...physicochemical conditions. Major thermal water systemsof Japan are in Tertiary to Recentvolcanicregions,especiallyin...Paleogeneplutonicand volcanicrocks. The thermalwatersof Japan,therefore,havea wide variationin chemistryrangingfrom |  | | Journal (article/letter/editorial) | | of ore deposition,drawn by Mr. G. R. Green from mine maps and his own mapping; see Brathwaite (1974)...the Rosebery-typedeposits,thoughat the Rosebery mine trace-element anomalies in disseminated pyrite in...the Upper Motoyama is beingconfused orebody(Yokota mine), after Hirabayashi(1974, Fig. 3). case,but it is...verticalmineralogicalzoning,generally from pyrite-chalcopyrite rich at the baseof the massiveore to pyrite...years the ores being largely pyrite or pyrite-chalcopyrite Fro. 5. Typical temperature-time curves for |  | | Report (issue) | | c = 7.803 Z = 32 X-ray Powder Pattern: Foster mine, Cobalt, Canada. 2.606 (100), 2.070 (70), 3.51 (60)...(2) 60.7 24.8 14.8 Total 100.0 100.3 (1) Foster mine, Canada; by electron microprobe, corresponding to...actinolite, calcite (Foster mine, Canada); bornite, chalcocite, chalcopyrite, djurleite, digenite, tennantite...aragonite (Sedmochislenitsi mine, Bulgaria). Distribution: In Canada, from the Foster mine, Coleman Township,...Echo Bay mine, Great Bear Lake, Northwest Territories. In the USA, at the Colorado Central mine, Georgetown |  | | Journal (article/letter/editorial) | | Fluids for the NeogeneVeinsand KurokoDepositsof Japan KEIKO HATTORI AND HITOSHI SAKAI Abstract The... --50 and about --2, respectively,for the Iwami mine, southwestHonshu. These isotopic results, the salinity...(-66)OP MM (-64)MK veins KOS -AR(-62) FK OZ JAPAN SEA A KN(-70) have the same strike and ...affected by terrestrial rather than su•bmarine JAPAN ARC environments. TS(-51) •(-49) S.._.•G (-47)...GypO, gypsumore; qtz, quartz; py, pyrite; cp, chalcopyrite;sph,sphalerite; gn, galena; bar, barite; anhyd |  | | Journal (article/letter/editorial) | | tandfonline.com/loi/tigr20 Pyritic ores and deposits of Japan a a V.I. Smirnov , Yu. S. Borodayev & V.I. Starostin... Starostin (1969) Pyritic ores and deposits of Japan, International Geology Review, 11:8, 845-856, DOI:...page/terms-and-conditions Pyritic ores and deposits of Japan Downloaded by [Cornell University Library] at 06:13...geologists concerning the origin of the "black ores" of Japan, which are related to Tertiary volcanic activity...DEPOSITS Pyritic deposits formed more than once in Japan, as in most of the other major sulfide prov- inces |  | | Report (issue) | | digenite, bornite, chalcopyrite, sphalerite. Distribution: From the Prince-Léopold mine, Kipushi, 28 km...Pazardzhik. From Akhtala, Armenia. At the San Giovanni mine, Iglesiente, Sardinia, Italy. In the Repparfjord...localities in Russia. In Japan, at the Shakanai and Furutobe mines, Akita Prefecture. From the Rajpura-Dariba...southern Brooks Range, Alaska; and at the Inexco #1 mine, Jamestown, Boulder Co., Colorado, USA. From Pinar...orange”) un sulfure germanifère provenant de la Mine Prince-Léopold, Kipushi (Congo Belge). Ann. (Bull |
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