 | | 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,...is composedof manganocalcite-pyrite-quartz and calcite-quartzsubbands from outside(earlier) to inner side...someextent, the following features are clarified for Toyoha mineralizationon the basis of detailedmineralogicaland...northeastern part of Honshu, the main island of Japan, whereas the vein-typedepositsare distributedthroughoutthe |  | | 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 |  | 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 |  | | Journal (article/letter/editorial) | | University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan [e-mail: imai@mine.kyushu-u.ac.jp] Received...deposits (Harukayama, Muineyama, Hishikari) in Japan. The F contents of the halogen-rich phlogopite range...deposit, hydrothermal ore deposit, volcanic rocks, Japan eastern Honshu). In addition, Horinouchi and Horikoshi...with native sulfur deposits in central Honshu, Japan. Horikoshi (1990) reported that the hydrothermal...associated with native sulfur and limonite deposits in Japan were examined in this study to reveal the further |  | | Journal (article/letter/editorial) | | magmatic-hydrothermal systems at Toyoha-Muine area in southwest Hokkaido, Japan Toru Shimizu1 and Masahiro...Aoki2 1 Geological Survey of Japan and 2Geological Museum, AIST, Tsukuba, Japan Abstract This paper presents...alteration and K–Ar age data from the Toyoha-Muine area (TMA), where the Toyoha polymetallic (Ag–Pb–Zn–Cu–In)...0 Ma in the southern and southeastern parts of Toyoha deposit at depth, overprinting the Middle to Late...(east of the Toyoha deposit) and assemblage III in the south and southeast of the Toyoha deposit near |  | | 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) | | Facultyof Science,Universityof Tokyo,Bunkyo-ku,Hongo,Tokyo113, Japan Abstract The assemblage and mode of occurrenceof...deposittypes: quartz, chalcedonicquartz, adularia, calcite, smectite, interstratified mica-smectite, interstratified...Au-Ag-richdeposits;chlorite, quartz, sericite,carbonates(calcite, rhodochrosite, siderite),and (magnetite) • in...suggestthat the fco• for vein-type mineralizationin Japan is controlled by alteration mineralscommonlyoccurringin...K-feldspar,and calcite). From a summaryof hostrocksfor Neogenevein-typemineralizationdistrictsin Japan,it was |  | | Journal (article/letter/editorial) | | Compositions of Calcite and Rhodochrosite from Geothermal Exploratory Drills TH-4 and TH-6 near the Toyoha Deposit...Deposit, Hokkaido, Japan Miyuki Nitta and Atsuyuki Inoue Department of Earth Sciences, Graduate School of...Science, Chiba University, Chiba, Japan Abstract We studied calcite and rhodochrosite from exploratory...cores (TH-4 and TH-6) near the Toyoha deposit, southwestern Hokkaido, Japan, from the aspect of stable isotope...zone, kaolin minerals zone, and propylitic zone. Calcite is widespread in all the zones except for the kaolin |  | | 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) | | 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) | | aqueousspecies,ionic strength, activity coefficients Toyoha (Pb-Zn) mine of aqueousspecies,activitiesof components...geochemical studies. Becausethe chemicalcomposi- calcite,and quartz. Three stagesare recognized of the northwest-southeast...commonlyin these deposits. Yatani (Au-Ag-Pb-Zn) mine General Description of the Ore Deposits The locationsof...acidic composition. The depositsstudied include Toyoha (Pb-Zn), Yatani (Au-Ag-Pb-Zn), Seigoshi (AuAg)...CONTENT Seigoshi(Au-Ag) mine OF ACANTHITE 525 Ikuno (Cu-Pb-Zn-du-dg-Sn-I4•) mine The orebodiesare hostedby |  | | Journal (article/letter/editorial) | | Possible Southeast Extension of the Toyoha Polymetallic Deposit, Japan Toru SHIMIZU, Masahiro AOKI* and...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...sphalerite from a possible southeast extension of the Toyoha polymetallic deposit. Sphalerite occurs as euhedral~subhedral |  | | 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...specimensfrom the epithermal Au-Ag Ohmori mine and Pb-Zn Toyoha mine. Giving specialattention to the zinc...OhmoriepithermalA u-Ag vein-typedeposits The Ohmori mine has already been closed. Only Kuhara's (1926) report |  | | 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) | | Institute, Hongo, University Tokyo of Tokyo, 113, Japan (Received June 19, 1973) Abstract-The carbonate...at the time of deposition is increased from the Toyoha (Pb-Zn) thorough the Oe (Mn-Pb-Zn), Inakuraishi...of fluid inclu sions from some vein deposits in Japan show that ore solutions responsible for forma tion...CO2gas (fCo2 = 102) Calcite Anhydrite (fCo2 = 10-2) Calcite Anhydrite (fC02 = 10) Calcite Anhydrite (fCo2...3, and 4, respectively, for mineralizations in Toyoha Pb-Zn deposits, Hokkaido, on the basis of the studies |  | | 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) | | 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...vein types. The largest one is Toyoha mine (4,700 tons In) and the Ashio mine (ca. 1,200 tons In) was found |  | | 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...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;...presents existing mineralogical and INTRODUCTION The Toyoha–Muine area (hereafter referred to as TMA) is a |  | | Journal (article/letter/editorial) | | Science, Tohoku University, Aoba Sendal 980-77, Japan Abstract Back-scattered electron imaging with a...involving a reaction of natural sphalerite (Shinyemi mine, Korea) with Cu-bearing hydrothermal solutions at...Natural samples from the Toyoha, the Furutobe and the Ezuri mines, Japan. The Toyoha mine, situated in western...are located in Akita Prefecture and belong to the Kuroko-type; the former is the mine where chalcopyrite...specimens analysed. However, in contents in the Toyoha sample are appreciable, ranging up to 1.0 mol.% |  | | Journal (article/letter/editorial) | | INDIUM-BEARING SPHALERITE FROM THE TOYOHA POLYMETALLIC DEPOSIT, JAPAN TORU SHIMIZU† AND YUICHI MORISHITA...MORISHITA Geological Survey of Japan, AIST, 1-1-1 Higashi, Tsukuba 305-8567, Japan Abstract Textural, chemical...characteristics of In-bearing sphalerite from the Toyoha Zn-PbAg-Cu-Sn-In vein-type deposit are investigated...In-bearing ores (350°−400°C) previously reported at Toyoha. Textural and chemical characteristics indicate...source. Introduction Toyoha is located at the northern end of the northeast Japan arc. It is the largest |  | | 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...smectite or other clay mineral, while carbonate (calcite and rhodocrosite) and Mn minerals are poorly represented...Pacific Ocean to the south and east, the Sea of Japan to the west, and the Sea of Okhotsk to the north |  | | Journal (article/letter/editorial) | | Numerical Studies of the Hoso‐ kura Deposit, Northern Japan Hiroshi Takahashi, Shohei Albert Tomita, Katsuaki...Numerical Studies of the Hosokura Deposit, Northern Japan, Ore Geology Reviews (2020), doi: https://doi.org/10...Numerical Studies of the Hosokura Deposit, Northern Japan A Cold-Water Trap as an Essential Process for the...Numerical Studies of the Hosokura Deposit, Northern Japan 1. Introduction Epithermal deposits are equally...selected the Hosokura deposit in Miyagi Prefecture, northern Japan (Fig. 1) with accumulated survey data |  | | Journal (article/letter/editorial) | | Implication for the Absence of Porphyry Cu Deposits in Japan Yasushi WATANABE, Ryuya SATO* and Adi SULAKSONO...Sciences, Mining Museum of Akita University, Akita, Japan Abstract The role of potassic alteration and associated...the potential of porphyry Cu mineralization in Japan. The reactions between the aqueous magmatic–hydrothermal...Cretaceous–Paleogene Southwestern Japan arc and late Miocene Northeast Japan arc, potassic alteration represented...scarcity of potassic-altered intrusive rocks in Japan is explained by the noncompressional stress field |
|
