 | | Journal (article/letter/editorial) | | Late Cenozoic Metallogeny of Southwest Hokkaido, Japan Yasushi WATANABE Mineral Resource Research Group...Tsukuba Central 7, Higashi 1-1-1, Tsukuba 305-8567, Japan [y-watanabe@aist.go.jp] Received on May 29, 2001;...magmatic style and stress field of southwest Hokkaido, Japan, and compiles deposit form, type, ore and alteration...activity. The late Cenozoic tectonic regime of the Sapporo-Iwanai ore district is divided into five periods...stress. Productive vein-type deposits, such as Toyoha, Inakuraishi, Ohe and Chitose, formed in the neutral |  | | Journal (article/letter/editorial) | | Hokkaido,Japan NAOTATSU SHIKAZONO Abstract Epithermal lead-zinc vein-type depositsof the Toyoha mine, Hokkaido...Hokkaido, Japan, occur in the Green Tuff region of Miocene age. The veins are divided into two groups,...composedof sphalerite-pyrite-quartz with minor hematite,sphalerite-galena-pyrite,sphalerite-pyrite,and...in a sphalerite grain was also studied. •Compositionalzoning of manganesecontent in a sphalerite grain...someextent, the following features are clarified for Toyoha mineralizationon the basis of detailedmineralogicaland |  | Ono, Shuji, Hirai, Koji, Matsueda, Hiroharu, Kabashima, Taro (2004) Polymetallic Mineralization at the Suttsu Vein-type Deposit, Southwestern Hokkaido, Japan. Resource Geology, 54 (4) 453-464 doi:10.1111/j.1751-3928.2004.tb00221.x | Journal (article/letter/editorial) | | Suttsu Vein-type Deposit, Southwestern Hokkaido, Japan Shuji ONO, Koji HIRAI1, Hiroharu MATSUEDA* and Taro...Engineering, Hokkaido University, N13, W8, Kita-ku, Sapporo 0608628, Japan [e-mail: onoshu@eng.hokudai.ac.jp] *...University, N10, W8, Kita-ku, Sapporo 060-0810, Japan ** Metals Exploration Group, Japan Oil, Gas and Metals...Corporation, 1310 Omiya-cho, Saiwai-ku, Kawasaki 212-8554, Japan 1 Present address: Resources and Metals...Metals Co. Ltd., 2-10-1 Toranomon, Minato-ku, Tokyo 105-0001, Japan Received on March 24, 2004; accepted on |  | | Journal (article/letter/editorial) | | 2000 Sulfur Isotopic Study of the Toyoha Deposit, Hokkaido, Japan −Comparison between the Earlier-Stage...the Toyoha deposit, Hokkaido, one of the largest Pb-Zn-Ag polymetallic vein-type deposits in Japan, were...the studied sulfide minerals collected from the Toyoha deposit range from +5 to +9‰, with an average of...1. Introduction The Toyoha mine is located in about 40km southwest of Sapporo City, Hokkaido (Fig. 1)...producers in Japan. It also is the most productive of the indium ores (Ohta, 1989). The Toyoha deposit is |  | | 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...Nogizaka building 9-6-41 Akasaka, Minato-ku, Tokyo 107, Japan 1992 29th IGC FIELD TRIP GUIDEBOOK Volume...Volume 6 : Mineral Deposits of Japan and the Philippines Editors: Tetsuro Urabe and Masahiro Aoki The...Nogizaka building 9-6-41 Akasaka, Minato-ku, Tokyo 107, Japan Technical Editors Technical Reviewer: Editorial |  | | Journal (article/letter/editorial) | | the Nakakoshi Copper Deposits, Central Hokkaido, Japan Norio Tsushima*, Hiroharu Matsueda** and Shunso...minerals such as pyrite, pyrrhotite, arsenopyrite, sphalerite, tetrahedrite, Ag-minerals and Cu-Zn-Fe-In-Sn-S...sericite. Chalcopyrite and pyrite contain sphalerite star and sphalerite with chalcopyrite emulsions. Maximum...Maximum indium contents of sphalerite and the Cu-Zn-Fe-In-SnS minerals are 1.8 and 16.3 wt%, respectively...similar to those of the reduced type veins of the Toyoha deposits. However there is distinct difference |  | | Journal (article/letter/editorial) | | Inclusions in Sphalerite from a Possible Southeast Extension of the Toyoha Polymetallic Deposit, Japan Toru SHIMIZU...Geological Survey of Japan/AIST, Central 7, Higashi 11- 1, Tsukuba 305-8567, Japan [e-mail: t.shimizu@aist...Geological Survey of Japan/AIST, Central 7, Higashi 1-1-1, Tsukuba 305-8567, Japan ** Global Minerals Exploration...Mining Agency of Japan, Tokiwa Bldg., 1-24-14, Toranomon, Minato-ku, Tokyo 105-0001, Japan Received on December...in sphalerite from a possible southeast extension of the Toyoha polymetallic deposit. Sphalerite occurs |  | | Journal (article/letter/editorial) | | low-sulfidation epithermal gold deposit, Northeast Japan arc Teruhiro Suzuki | Shota Satori Graduate School...International Resource Sciences, Akita University, Akita, Japan Correspondence Yasushi Watanabe, Graduate School...Akita 010-8502, Japan. Email: y-watanabe@gipc.akita-u.ac.jp Funding information Japan Society for the...deposits in the Tohoku region of the Northeast Japan arc; however, these deposits have undergone limited...research study of the Bosawa deposit in Akita Prefecture was conducted to support future gold exploration |  | | Journal (article/letter/editorial) | | Environmentsof Formation of Vein-Type Depositsin Japan NAOTATSU •HIKAZONO Abstract Electron probe microanalysis...deposits of Au-Ag type (Ohmori mine) and Pb-Zn type (Toyoha mine) in Japan reveal a remarkable contrast...weight percent, whereas the zinc content in the Toyoha deposit is less than can be detected by present...supportedby the mode of distribution of iron in sphalerite in these types of mineralization. Introduction...specimensfrom the epithermal Au-Ag Ohmori mine and Pb-Zn Toyoha mine. Giving specialattention to the zinc |  | | Journal (article/letter/editorial) | | chemical compositionof coexisting acanthite, sphalerite, and electrum and mineral stability relationshipshitherto...weight percent. Theoreticallythe iron contentof sphalerite and the silver content of electrum can be representedas...aqueousspecies,ionic strength, activity coefficients Toyoha (Pb-Zn) mine of aqueousspecies,activitiesof components...either late in the sulfide tions of acanthite,sphalerite,and electrum which oc- stageor early in the carbonatestage...commonlyin these deposits. Yatani (Au-Ag-Pb-Zn) mine General Description of the Ore Deposits The locationsof |  | | Journal (article/letter/editorial) | | MICROTHERMOMETRY OF INDIUM-BEARING SPHALERITE FROM THE TOYOHA POLYMETALLIC DEPOSIT, JAPAN TORU SHIMIZU† AND YUICHI...MORISHITA Geological Survey of Japan, AIST, 1-1-1 Higashi, Tsukuba 305-8567, Japan Abstract Textural, chemical...microthermometric characteristics of In-bearing sphalerite from the Toyoha Zn-PbAg-Cu-Sn-In vein-type deposit are...in zinc and mainly consists of sphalerite. The In-bearing sphalerite formed as euhedral growth bandings...corrosion of In-free sphalerite and replacement of a precursor mineral. The In-bearing sphalerite, which appears |  | | Journal (article/letter/editorial) | | Hydrothermal Alteration in Toyoha Geothermal System, Southwestern Hokkaido, Japan Atsuyuki Inoue,1 Kyohei...University, Chiba, Japan, 2Graduate School of Natural Science, Chiba University, Chiba, Japan and 3Japan International...Research Center for Agricultural Science, Tsukuba, Japan Abstract In this study, we applied chemical geothermometers...various types of hydrothermally altered rocks in the Toyoha geothermal field, using core samples from six drill...to TH-7) together with wasted ore samples from Toyoha vein-type ore deposit. Based on the preliminary |  | | Journal (article/letter/editorial) | | MEETING OF THE SOCIETY OF MINING GEOLOGISTS OF JAPAN, FEB. 4-5, 1960 1 PRESIDENT'S LECTURE WATANABE...ACCOMPANYING THE URANIUM DEPOSITS IN TOTTORI PREFECTURE. Mineralogical examination was made on about...radioactivity in the Ogamo and Marutani Mines near Kurayoshi City in the northern part of Ningyo-tOge uranium deposits...brochure of the Society of Mining Geologists of Japan by Engineer Intelligence Division Office of the...OF THE COUNTRY ROCK IN THE MIMORIYAMA MINE, HOKKAIDO. This mine yields limonite, and the ore is developed |  | | Journal (article/letter/editorial) | | in Japan NAOTATSU SHIKAZONO GeologicalInstitute,Facultyof Science,Universityof Tokyo,Bunkyo-ku,Hongo...Hongo,Tokyo113, Japan Abstract The assemblageelectrum-sphalerite-pyrite-argentite is commonin epithermalAu-Ag...with this mineral assemblage. Almostall electrum-sphalerite temperaturesare within +__30øC of the filling...electrum-sphalerite-pyrite-argentite assemblage, the temperaturesfor the electrum-sphalerite-pyrite-AgSe...mometersthroughintercomparison. applicability of the electrum-sphalerite-pyrite-arIn this paper, filling temperaturesof |  | | Journal (article/letter/editorial) | | in the Toyoha–Muine area, southwest Hokkaido, Japan TORU S HIMIZU* Geological Survey of Japan, AIST,... 1-1-1 Higashi, Tsukuba 305-8567, Japan (Received November 7, 2011; Accepted February 5, 2012) Sulfur...Sulfur isotopes in vein sulfides (galena, sphalerite, and pyrite) and pyrite sulfur derived from overprinting...systems in the altered volcanic host rocks of the Toyoha–Muine area are determined. Miocene and Pliocene–Pleistocene...hydrothermal systems, ore minerals, alteration, Toyoha–Muine ess and the origin of sulfur (Kiyosu, 1974; |  | | Journal (article/letter/editorial) | | Science, Tohoku University, Aoba Sendal 980-77, Japan Abstract Back-scattered electron imaging with a...intimate association of fine chalcopyrite grains and sphalerite ('chalcopyrite disease') in synthesized products...synthetic chalcopyrite disease in Fe-bearing sphalerite formed by a replacement reaction, chalcopyrite...natural zoned sphalerite. Ellipsoidal to lens-like habits of chalcopyrite appear in sphalerite that has undergone...the FeS component dissolved in the sphalerite. All the sphalerite samples formed by the coprecipitation |  | | Journal (article/letter/editorial) | | Telluride Mineralization in Southwestern Hokkaido, Japan Euis T. YUNINGSIH*, Hiroharu MATSUEDA** and Ildrem...University Museum, Hokkaido University, Sapporo 060–0810, Japan Tellurium–bearing gold, silver, and base...epithermal mineralization in southwestern Hokkaido, Japan. The telluride deposits in this district consist...Pacific Ocean to the south and east, the Sea of Japan to the west, and the Sea of Okhotsk to the north...an important portion of the mineral resources of Japan. These resources are related to the occurrence of |  | | 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:...but the majority is contained as an impurity in sphalerite, and tin and copper sulfides. Average grades...vary from a few ppm (e.g., Kosaka mine) to more than 300 ppm (Toyoha mine). The amount of indium in all the |  | | Book | | 5 Kuroko, Hokuroku basin, Northeastern Honshu, Japan ..................... 58 3.2.6 Laochang, Changning-Menglian...Hyogo Prefecture, Honshu, Southwest Japan .................... 79 3.4.3 Fukoku, Kyoto Prefecture, Honshu...Southwest Japan ....................... 82 3.4.4 lkuno, Hyogo Prefecture, Honshu, Southwest Japan .........District, Gifu Prefecture, Honshu, Southwest Japan ..... 83 3.4.6 Omodani, Fukui Prefecture, Honshu, Southwest...Southwest Japan ..................... 84 3.4.7 West Shropshire Orefield, England ..................... |  | | Journal (article/letter/editorial) | | of intimate intergrowths of chalcopyrite and sphalerite and their genetic implications A. Sugaki, A....Economic Geology, Tohoku University, Sendal 980, Japan Abstract. To determine the bulk chemical compositions...compositions of chalcopyrite containing starlike sphalerite and sphalerite including dotlike chalcopyrite, specimens...specimens from various types of ore deposits in Japan were used for modal and electron microprobe analyses...contents in chalcopyrite containing starlike sphalerite are less than 0.8 at%, corresponding to the maximum |  | | Journal (article/letter/editorial) | | OF β ZnS MASATAKA The Toyoha Abstract: mines Mine, Sixty in Japan. Namariyama Pref.), Kidogasawa...Kidogasawa (Tochigi Hitachi mine From is a the minerals unit content cell 717X in edges FeS...X‑ray are β1 sphalerite FeS of and minerals a0 a function (Akita Pref.) β2 sphalerite. and in ...divided this and of so‑called Kuroko β1 sphalerite and in β1 Pref.) those (Fukushima analyses...from Toyoha Yonaihata are type of samples, consist The unit Kieslager results sphalerite mines |  | | Journal (article/letter/editorial) | | Geochemical Journal, Vol. 7, pp. 97 to 114, 1973 Sphalerite-carbonate-pyrite assemblage in hydrothermal...Institute, Hongo, University Tokyo of Tokyo, 113, Japan (Received June 19, 1973) Abstract-The carbonate... coexisting some hydrothermal theoretical sphalerite vein deposits, considerations of hydrothermal... the relation between the activity of FeS in sphalerite and that of FeCO3 in carbonate should be considered...Therelationbetweenactivityandconcentra tionof FeSin sphalerite canbe obtained fromtherecentexperimental worksin |  | | Report (issue) | | = 11.21(1) Z=4 X-ray Powder Pattern: Montgros mine, France (showing preferred orientation). 1.768 (vs)...03 22.36 Total 100.39 100.17 100.00 (1) Montgros mine, France; by electron microprobe, average of eight...corresponds to Ag0.99 In1.00 S2.00 . (2) Toyoha mine, Japan; by electron microprobe, corresponds to Ag1...deposit (Montgros mine, France); in a vein-type hydrothermal ore deposit (Toyoha mine, Japan). Association:...Association: Galena, sphalerite, barite, ankerite, quartz (Montgros mine, France); sphalerite, hocartite, pyrargyrite |  | | Journal (article/letter/editorial) | | Jozankei-Zenibako District, Southwest Hokkaido, Japan Yasushi WATANABE* and Eijun OHTA** Abstract: Hydrothermal...subduction of the Pacific plate beneath the Northeast Japan arc. Normal, in contrast to oblique, plate subduction...formed mostly in the Pliocene and Pleistocene time (Toyoha, Teine, Koryu, etc.), and only a few deposits are...Watanabe (1990) suggested that the mineralization at Toyoha, Teine and Koryu are related to the magmatic activities...district is at the northern end of the Northeast Japan arc (Fig. 1), and has been the site of arc volcanism |  | | Journal (article/letter/editorial) | | Exploratory Drills TH-4 and TH-6 near the Toyoha Deposit, Hokkaido, Japan Miyuki Nitta and Atsuyuki Inoue Department...Graduate School of Science, Chiba University, Chiba, Japan Abstract We studied calcite and rhodochrosite from...cores (TH-4 and TH-6) near the Toyoha deposit, southwestern Hokkaido, Japan, from the aspect of stable isotope...of which is basically equivalent to that in the Toyoha veins. The measured d18OSMOW and d13CPDB values...fluids pertaining to the formation of veins in the Toyoha deposit. Keywords: calcite, carbon and oxygen isotope |
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