 | | 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,...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...located(Fig. 1). The Toyoha lead-zincmineis the largestamongthem. The Toyoha mine was already in operationwhen |  | | 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)...1). It is one of the largest lead-zinc-silver producers in Japan. It also is the most productive of the |  | | 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 |  | 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) | | 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) | | Environmentsof Formation of Vein-Type Depositsin Japan NAOTATSU •HIKAZONO Abstract Electron probe microanalysis...type (Ohmori mine) and Pb-Zn type (Toyoha mine) in Japan reveal a remarkable contrast in zinc content. Siderite...amount of zinc, ranging from 0.8 to 5.8 in ZnO weight percent, whereas the zinc content in the Toyoha deposit...than can be detected by present techniques. How the zinc content of siderite is affected by physicochemicalvariables...epithermal Au-Ag Ohmori mine and Pb-Zn Toyoha mine. Giving specialattention to the zinc content of the mineral |  | | Journal (article/letter/editorial) | | the Nakakoshi Copper Deposits, Central Hokkaido, Japan Norio Tsushima*, Hiroharu Matsueda** and Shunso...similar to those of the reduced type veins of the Toyoha deposits. However there is distinct difference...values are -10.9 ‰ at the Nakakoshi and 5.2 ‰ at the Toyoha. It is suggested that the Nakakoshi deposits were...ilmenite-series granitoids under higher temperature than the Toyoha veins, which were formed by fluids liberated from...deposits are reported, and compared to those of the Toyoha deposits. 1. Introduction Late Cenozoic mineralizations |  | | Journal (article/letter/editorial) | | aqueousspecies,ionic strength, activity coefficients Toyoha (Pb-Zn) mine of aqueousspecies,activitiesof components...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...mainly composedof sphalerite,sulfide Asahi (•u-•g) mine stage composedof chalcopyriteand minor sulfides |  | | Journal (article/letter/editorial) | | Rocks and Metallogenesis in Southwest Hokkaido, Japan Eijun OHTA*, Yoshinobu KAWANO**, Mitsuru NAKAGAWA*...and K2O/(Na2O+K2O) of the rocks increase toward Japan Sea, whereas total FeO, CaO, and 87Sr/86Sr decrease...metallogenic zones; manganese-base-metal zone on the Japan Sea side, pyrite-limonite zone mainly along the... Geological Survey of Japan, Kita-8 Nishi-2, Kita-ku, Sapporo 060-0808, Japan [e-mail: ohta@gsj.go.jp]...840-0027, Japan *** Department of Geology, Niigata University, Igarashi 28050, Niigata 950-2102, Japan Keywords: |  | | 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 |  | | 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) | | 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...to the analytical results, most of the measured zinc contents in chalcopyrite containing starlike sphalerite...at%, corresponding to the maximum solubility of zinc in chalcopyrite as determined experimentally at...specimens from the Maruyama deposit in the Tsumo mine contain 1.2-1.4 at% Zn, which are within the solubility |  | | Journal (article/letter/editorial) | | Facultyof Science,Universityof Tokyo,Bunkyo-ku,Hongo,Tokyo113, Japan Abstract The assemblage and mode of occurrenceof...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...(24) (25) (26) (27) (28) (29) (30) (31) (32) (33) Mine name Motokura Hokurhu Sanru Numanoue Kohnomai Kitami |  | | 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...near-infrared (NIR) microscopy. The studied ore is rich in zinc and mainly consists of sphalerite. The In-bearing...In-bearing ores (350°−400°C) previously reported at Toyoha. Textural and chemical characteristics indicate |  | | 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) | | 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) | | 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...gold and silver vein–type ore, copper, lead and zinc ore in the form of vein–type or Kuroko–ore (Yajima |  | | 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 |  | | 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.% |  | | 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...3, and 4, respectively, for mineralizations in Toyoha Pb-Zn deposits, Hokkaido, on the basis of the studies...inclusions and mineral paragenesis for ores from the mine (S HIKAZONO, unpublished data). 321 4 logfs2 S |  | | 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...plutonicrocksoften occurin proximity to gold-silver,lead-zinc,copper, and tin-tungstenore deposits. Some of theserocks...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 |  | | 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 |
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