 | | 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...sphaleritecoexistingwith iron minerals such as hematite, pyrite, and pyrrhotitewas analyzedby electronmicropr9beanalyzer...someextent, the following features are clarified for Toyoha mineralizationon the basis of detailedmineralogicaland |  | | 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 |  | | 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) | | 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) | | 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...are argentire, electrum, rhodochrosite, barite, hematite, magnetite, quartz, and minor amounts of sulfidesand |  | | 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) | | 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) | | aqueousspecies,ionic strength, activity coefficients Toyoha (Pb-Zn) mine of aqueousspecies,activitiesof components...ations,and the other erite, galena,pyrrhotite,hematite,manganocalcite, in geochemical studies. Becausethe...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) | | Facultyof Science,Universityof Tokyo,Bunkyo-ku,Hongo,Tokyo113, Japan Abstract The assemblage and mode of occurrenceof...Pb-Zn-richdeposits; chlorite,sericite,siderite, hematite, magnetite, and (epidote) in Cu-rich deposits...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...similaritiesbetween epithermal type deposits in Japan have been carried out in vein-type depositsand active |  | | 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) | | 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) | | 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) | | 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) | | 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...magnetite phase boundary line Magnetite hematite phase boundary line Hematite pyrite phase boundary line Sp...3, and 4, respectively, for mineralizations in Toyoha Pb-Zn deposits, Hokkaido, on the basis of the studies |  | | 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) | | Economic Geology, Tohoku University, Sendal 980, Japan Abstract. To determine the bulk chemical compositions...specimens from various types of ore deposits in Japan were used for modal and electron microprobe analyses...specimens from the Maruyama deposit in the Tsumo mine contain 1.2-1.4 at% Zn, which are within the solubility...dusts ofchalcopyrite as observed in ores from the Toyoha and Furutobe mines (see Fig. 2 d), it was impossible...Table 1. In the case of specimens from the Tsumo mine of a socalled skarn-type deposit, ores consist mainly |  | | 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 |  | | 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) | | 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) | | 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 |  | | Journal (article/letter/editorial) | | ns in AcidicIgneousRocks fromSomeMiningAreasin Japan SUKUNE TAKENOUCHI AND HIDEKI IMAI Abstract Glassand...rhyolites,porphyries,and granitesfrom mining areas in Japan were investigated. Rhyolites contain various types...quartzcrystalsof Kishu mines,porphyriesfrom the Toyoha,Tokuryu, rhyolitesand pyroclastics. Akagane, Kamioka...a boring core drilled at the lowest level of the mine were investi- gated. They belongmostlyto type 2...porphyry occursas a stock in deeperparts of the mine. Manyof theglassinclusions in quartzphenocrysts |  | Cook, N.J., Sundblad, K., Valkama, M., Nygård, R., Ciobanu, C.L., Danyushevsky, L. (2011) Indium mineralisation in A-type granites in southeastern Finland: Insights into mineralogy and partitioning between coexisting minerals. Chemical Geology, 284 (1) 62-73 doi:10.1016/j.chemgeo.2011.02.006 | Journal (article/letter/editorial) | | magnetite–sphalerite lenses occur in close association to the hematite-altered rapakivi granites. In 2008, a distinct...took place during the 17th Century in the Forsby mine, just outside the western limit of the batholith...massive magnetite–sphalerite lenses occur between hematite-altered rapakivi granites and ignimbrites. A 10...sphalerite and magnetite (the latter replacing hematite) in a matrix composed of calcite, fluorite, Mn-rich...type locality (Meisser et al., 1999) and from Toyoha, Japan (Ohta, 1992). Solid solution between roquesite |  | | Journal (article/letter/editorial) | | Possibility of Porphyry Copper Mineralization in Japan a Kezhang Qin & Shunso Ishihara b a Beijing...Planetary Sciences , Hokkaido University , Sapporo, 060, Japan Published online: 06 Jul 2010. To cite this...Possibility of Porphyry Copper Mineralization in Japan, International Geology Review, 40:6, 539-551, DOI:...Possibility of Porphyry Copper Mineralization in Japan KEZHANG Q I N Beijing Institute of Geology for...Planetary Sciences, Hokkaido University, Sapporo 060, Japan Downloaded by [Columbia University] at 08:43 |  | | 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 |
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