 | | Journal (article/letter/editorial) | | in Tsushima, Japan Shunso ISHIHARA and Akira IMAI* Abstract: Miocene granitoids of the Tsushima Islands...K and 18O. The latter may be the case for the Tsushima granitoids, because of the low initial Sr ratio...magmatism related to the opening of the Sea of Japan. It is suggested that both basaltic and granitic...and zinc metals. Such a fluid migrated into the Taishu fracture systems, as the magma crystallized, and...and became one of the leading lead-zinc mines in Japan and have been studied in details (Uehara, 1959; |  | | Journal (article/letter/editorial) | | Characterization of Magnetically Zoned Pluton, Tsushima, Japan Nobutaka SHIMADA, Youichi OHYAMA* and Hiroaki...the outcrops of the Uchiyama granitic pluton, Tsushima Islands. The pluton consists of hornblende-biotite...intrudes concordantly along an anticline axis of the Taishu Group in middle Miocene (16.1±0.5 Ma), and crops...by black mudstones of the Lower Formation of the Taishu Group, which is deltaic to shallow sea sediments...concluded that the magnetically zoned pluton at Tsushima was formed by an external volatile buffer system |  | | Journal (article/letter/editorial) | | Pluton Related to Lead-Zinc Mineralization in Tsushima, Japan Hiroaki IKEMI, Nobutaka SHIMADA* and Hitoshi...deposits (Taishu mine) in the Tsushima Islands, Japan. The pluton intrudes into the Paleogene Taishu Group...Group to form the biotite-hornfels zone, while the Taishu vein-type Pb-Zn deposits occur in fissures developed... Oxygen isotopes of the biotite and coexisting quartz grains indicate that isotopic exchange reactions...rates in the pluton. The mineralization age of the Taishu ore deposits is obtained for the first time to |  | | Journal (article/letter/editorial) | | Magmas of Back-Arc Granite: Miocene Tsushima Pluton, Southwest Japan Ki-Cheol Shin1, Masanori Kurosawa1...Tsukuba, Ibaraki, Japan, 2Research Institute for Humanity and Nature, Kyoto, Japan Abstract The Middle...Middle Miocene Tsushima granite pluton is composed of leucocratic granites, gray granites and numerous...southwestern Japan, all of which formed in relation to the opening of the Sea of Japan. The Tsushima granites...back-arc area of the innermost Inner Zone of Southwest Japan, contain numerous miarolitic cavities, and show |  | | Journal (article/letter/editorial) | | tetrahedrites 7, from mine, and of Geology, Kyushu pp. F. OCT. 1972 Japan* HIROWATARI Faculty...University, 77-87, Taishu-Shigekuma Island, SHIMADA Department 1, the Tsushima N. No. of Fukuoka...Fukuoka, Science, Japan ABSTRACT Argentian across, in shima tetrahedrites Island. formula of wide...veins Electron range lation have siderite-quartz-sulfide is close to (Cu, from cell as the...attaining revealed Ag)10(Fe, 3.5 edge crystals Taishu-Shigekuma microanalyses content unit of weight |  | | Journal (article/letter/editorial) | | Br/Cl ratios of fluid inclusions in the Tsushima granite, Japan: Significance for formation of granite-derived...Br/Cl ratios of fluid inclusions in the Tsushima granite, Japan: Significance for formation of granite-derived...Br/Cl ratios of fluid inclusions in the Tsushima granite, Japan: Significance for formation of granite-derived...University of Tsukuba, Tsukuba, Ibaraki 305-8572, Japan 2 Faculty of Pure and Applied Sciences, University... 305-8577, Japan 3 Research Institute for Human and Nature, Kyoto, Kyoto 603-8074, Japan 4 Tandem |  | | Journal (article/letter/editorial) | | AIST, Central 7, Higashi 1-1-1, Tsukuba 305-8567, Japan [e-mail: s-ishihara@aist.go.jp] * Department of...739-8526, Japan ** Institute for Geo-resources and Environment, Geological Survey of Japan, AIST Central...Central 7, Higashi 1-1-1, Tsukuba 305-8567, Japan Received on April 9, 2006; accepted on July 29, 2006 Abstract:...vary from a few ppm (e.g., Kosaka mine) to more than 300 ppm (Toyoha mine). The amount of indium in all the...types. The largest one is Toyoha mine (4,700 tons In) and the Ashio mine (ca. 1,200 tons In) was found to | | | Journal (article/letter/editorial) | | J. Japan. Assoc. Min. Petr. Econ. Geol. 75, 62-67, 1980 ANOMALOUS CHLORINE CONTENTS OF MIOCENE GRANITOIDS...GRANITOIDS FROM TSUSHIMA, JAPAN SHIGERU TERASHIMA and SITUNSO ISHIHARA Geological Survey of Japan, Higashi...Yatabe, Tsukuba, Ibaraki, Japan Miocene granite and granodiorite of Tsushima islands contain 700 to 1...than chlorine contents of common granitoids in Japan. The Miocene granitoids belong to so-called calc-alkaline...important role for lead-zinc mineralization of the Taishu mine. water INTRODUCTION and and crushed fluorine |  | | Journal (article/letter/editorial) | | Magnetite-series and Ilmenite-series Granitoids in Japan Shunso ISHIHARA1 and Takeru MORIYAMA2 1 National...Central 7, AIST, Tsukuba, Japan, and 2Toyota Tsusho Corporation, Nagoya, Japan Abstract Apatites of representative...across the Inner Zone batholith of the islands of Japan were studied in the 1970s. Czamanske et al. (1981)...granitoids of the Cretaceous to Paleogene granitoids in Japan, and the results were given briefly in Ishihara and...eight from the Sanin Belt of the Inner Zone of SW Japan. From the ilmenite-series granitoid terranes, four |  | | Journal (article/letter/editorial) | | Science,Universityof Tokyo,Bunkyo-ku,Hongo,Tokyo113, Japan Abstract The assemblage and mode of occurrenceof...ganguemineralsvary with different deposittypes: quartz, chalcedonicquartz, adularia, calcite, smectite...zeolites,and kaolinitcin Au-Ag-richdeposits;chlorite, quartz, sericite,carbonates(calcite, rhodochrosite, siderite)...suggestthat the fco• for vein-type mineralizationin Japan is controlled by alteration mineralscommonlyoccurringin...hostrocksfor Neogenevein-typemineralizationdistrictsin Japan,it was found that many Cu-Pb-Zn-richvein-type depositsoccurin |  | | Journal (article/letter/editorial) | | metallogenetic provincesof Late Tertiary age in Japan (dotted area). (After T. Watanabeand S. Iwao, 1959...(25). All of the samplesexceptone from the Hitachi mine were collected from ore depositsthat belong to the...Honshu Island (main island of the JapaneseIslands) is summarizedby the GeoloigcalSurvey of Japan (9). The...situation was reversed. A subsidenceof the crust in the Japan Sea side area occurred. The districtalongthe FossaMagna...into•two major tectonicprovinces,namely Northeastern Japan and SouthwesternJapan, also subsided. A thick accumulationof |  | | Journal (article/letter/editorial) | | Science, Nagoya University, Chikusa, Nagoya 464, Japan (Received August 7,,1973; in revised form September...sphalerite and galena samples from the Taishu and Toyoha mines, Japan, (Kiyosu, unpublished data) and the...with fluid 'inclusion temperatures is good for Taishu and Upper Mississippi valley deposits (TAKENOUCHI...pairs examined and/or between the sulfides and quartz from which the fluid inclusion temperature was...from natural ore deposits. • : Taishu mine, Japan; 0 : Toyoha mine, Japan; (KIYOSU,unpublished data), + |  | | Journal (article/letter/editorial) | | Fluids for the NeogeneVeinsand KurokoDepositsof Japan KEIKO HATTORI AND HITOSHI SAKAI Abstract The...The $D values of inclusionfluids from quartz and calcite of the Au-Ag vein deposits range from --48 to...waters. The •sO/•60 ratios of the ore fluids of quartz, the filling temperatures of the fluid inclusions...inclusions,and the isotopic fractionation factor between quartz and water show only slight shifts from these values... --50 and about --2, respectively,for the Iwami mine, southwestHonshu. These isotopic results, the salinity |  | | Journal (article/letter/editorial) | | fromSomeMiningAreasin Japan SUKUNE TAKENOUCHI AND HIDEKI IMAI Abstract Glassand fluid inclusionsin quartz of rhyolites...rhyolites,porphyries,and granitesfrom mining areas in Japan were investigated. Rhyolites contain various types...igneousrocksand ore deposits. In quartz phenocrysts of rhyolite and porphyry and in quartz grains of pyroclastics...andconsideredto be samplesof the magmaticmelts from which the quartz grains crystallized. If the ore-formingsolutionswere...in the vicinityof ore depositsare almostopaque, Taishu mines (Fig. 1). dueto theformationof the aggregate |  | | Book | | G - EOLOGICAL OF THE MINERI IN JAPAN AND Hideki Imai t z0 ::a:: 0 0 � I ( CRYSTALS NOT PISTOLS...STUDIES OF THE MINERAL DEPOSITS'( GEOLOGICAL lN JAPAN AND EAST ASIA ,,.. I -I �1n .. o� ;.,. "W...GEOLOGICAL STUDIES OF THE MINERAL DEP OSITS IN JAPAN AND EAST ASIA Hideki Imai UNIVERSITY OF TOKYO PRESS...TOKYO PRESS, 1978 UTP 3044-687 59-5 I 49 Printed in Japan All rights reserved. No part of this publication...During these 40 years, I studied the ore deposits in Japan and East Asia from the geological and mineralogical |  | | Journal (article/letter/editorial) | | REVIEW Jadeitite from Itoigawa, Niigata Prefecture, central Japan Hiroshi MIYAJIMA Fossa Magna Museum, 1313...1313 Ichinomiya, Itoigawa, Niigata 941–0056, Japan This paper presents a review of Itoigawa’s jadeitite...in Japanese Islands from Hokkaido to Okinawa Prefecture, and also in the southern part of the Korean...introduction of Buddhism into Japan. Therefore, the existence of jadeitite in Japan was forgotten for a period...graphite inclusions in jadeitite. The absence of quartz and euhederal jadeite crystals with natrolite and |  | | Journal (article/letter/editorial) | | Tokyo, Japan Abstract Chemical analysis of biotite in representative granitic rocks in Japan shows that...clear genetic relationship to granitic rocks. In Japan, the skarn-type ore deposits have been classified...Uchida, Ohkubo 3-4-1, Shinjuku, Tokyo 169-8555, Japan. Email: weuchida@waseda.jp © 2007 The Authors Journal...granitic rocks in the 15 districts (Fig. 1) of Japan with or without hydrothermal mineralization were...minerals (Hollister et al., 1987). Phlogopite + 2 Quartz + 2 Anorthite = Tschermakite + Orthoclase. (1) |  | Watanabe, Makoto, Nishido, Hirotsugu, Hoshino, Kenichi, Hayasaka, Yasutaka, Imoto, Nobuhiro (1998) Metallogenic epochs in the Inner Zone of southwest Japan. Ore Geology Reviews, 12 (4) 267-288 doi:10.1016/s0169-1368(98)00002-x | Journal (article/letter/editorial) | | Metallogenic epochs in the Inner Zone of southwest Japan Makoto Watanabe a a,) , Hirotsugu Nishido b, Kenichi...Science, Hiroshima UniÕersity, Higashi-Hiroshima 739, Japan b Research Institute of Natural Sciences, Okayama...717-06, Japan c Department of Earth Sciences, Kyoto UniÕersity of Education, Kyoto 612, Japan Received...metallogenic epochs in the Inner Zone of southwestern Japan are classified by considering mainly radiometric...Islands, and probably formed in the shallow mantle of island-arc settings; Ž2. Carboniferous to Permian Epoch: |  | | Journal (article/letter/editorial) | | Cretaceous-Palaeogene geology of Southwest Japan J. H. MeD. Whitaker WHITAKER , J. H. McD, 1982. Cretaceous-Palaeogene...Cretaceous-Palaeogene geologyof Southwest Japan. Proc. Geol. Ass. , 93 (2), 147-1 60. The Cretaceous and...Palaeogene sediments and igneous rocks of Southwest Japan accumulated along an active continental margin....cyclic subduction of the Kula Plate beneath SW Japan. Department of G eology, The Unive rsity, Leicester...igneou s ro cks are exposed over wide areas of SW Japan. Their d istri bution , str uctures, petrograph | | | Journal (article/letter/editorial) | | の推定 ESTIMATION OF FORMATION TEMPERATURE FOR THE TAISHU, TOYOHA AND KAMIOKA Pb-Zn DEPOSITS ON THE BASIS... in Toyoha the early these isotopic are quartz and with from ranges from 350•Ž forma compared...the vein. deposits, These from enriched in Taishu, the were stage (Kiyosu, Kamioka from sphalerite...Kamioka is smaller sphalerite been fractionation Taishu be 250•‹ coexisting deposits All temperatures...清 stage of in vein in fractiona formation Taishu slightly 1.5 mostly is deposits higher than | | | Journal (article/letter/editorial) | | OXYGER ISOTOPE COMPOSITIONS OF CALCITE FROM THE TAISHU Pb-Zn Carbon been -8 The and .9 to -12.3 ...carbon of from isotopic of organic values Taishu exchange values Much with of from are in... Pb-Zn lie fluid Taishu range most to et composed by fO2) as the Taishu al., of +8.0 1976)...1 ore-forming hydrothermal matter deposits Taishu calcites between +10.7 the fluids of Kiyosu)*...5: from the of Taishu Echo Bay Granitic 素 でSMOWで 樹 of calcites Taishu deposits deposits |  | | Journal (article/letter/editorial) | | at the Ohori Base Metal Deposit, Yamagata Prefecture, NE Japan: C, O and S Isotopic Study Yu Yokoro,1 Takahiro..., Yamagata, Japan, 2Tono Geoscience Center, Japan Atomic Energy Agency, Yamagata, Japan and Department...Environmental Sciences, Yamagata University, Yamagata, Japan 3 Abstract The Ohori ore deposit is one of the...Cu–Pb–Zn deposits in the Green Tuff region, NE Japan, and consists of skarn-type (Kaninomata) and vein-type...than those of the Cretaceous skarn deposits in Japan. These isotope ratios of the Kaninomata skarn show |  | | Book | | GEOLOGY OF JAPAN Edited by Fuyuji Takai Tatsuro Matsumoto Ryuzo Toriyama UNIVERSITY OF CALIFORNIA PRESS...Angeles 1963 University of Tokyo Press Tokyo, Japan University of California Press Berkeley and Los...England © University af Tokyo Press, 1963 Printed in Japan All rights reserved. mip Preface Geology is...maps have recently been very actively published in Japan as in many other regions of the world, but they...and Mineral Resources of Japan ”, with an attached geological map of Japan on scale 1: 3,000,000, by |  | | Journal (article/letter/editorial) | | study of the Kamioka Zn-Pb skarn deposits, Central Japan H. Shimazaki 1 and M. Kusakabe 2 1 Geological Institute...Science, University of Tokyo, Hongo, Tokyo 113, Japan 2 Institute for Study of the Earth's Interior, Okayarna...Okayarna University, Misasa, Tottori Prefecture 682-02, Japan The Kamioka Zn-Pb deposits consist of...compositions of eight separates each of clinopyroxene and quartz from the deposits (Table 1), and some minerals...Kamioka Zn-Pb mine is located near the town of Kamioka in Gifu Prefecture, central Japan. The deposits |  | | Journal (article/letter/editorial) | | boulangerite. The host sediments are carbonaceous, quartz, dolomite, K-feldspar, siltstones of Proterozoic...tetrahedrite found in transgressive veins with massive quartz and/or chalcopyrite. Three analyses of this type...Argentian tetrahedrites from the Taishu-Shigekuma mine, Tsushima Island. Japan. Mineral. J. 7. No. 1, 77--87... H. W. : Minerals from the Highland-Bell silver mine, Beaverdell, British Columbia, Univ. Toronto Studies |
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