 | Watanabe, Makoto, Nishido, Hirotsugu, Moriwaki, Hisamitsu, Higashimoto, Sadao, Kubota, Yoshinori (1988) K-Ar ages of skarn deposits in the inner zone of southwestern Japan. GEOCHEMICAL JOURNAL, 22 (5) 231-236 doi:10.2343/geochemj.22.231 | Journal (article/letter/editorial) | | Inner Zone of skarn deposits of southwestern Japan MAKOTO WATANABE1, HIROTSUGU NISHID02*, HISAMITSU...Geology Iwakuni Geology Branch, and Mineralogy, Department, Metal Mining Geological and Kuga mine, Hiroshima...Zealand2, Agency of Japan, Iwakuni, Yamaguchi 7403, Survey Hiroshima of Japan, Mikawa-cho, University...Hiroshima Yamaguchi (Received July 2, 1988; Accepted 7304, 740-045, January 30, Japan 1989) Using...hornblende from the Ushirodani Cu-Zn skarns, Tottori Prefecture (60.7 ± 3.1, 60.8 ± 1.9 Ma); muscovite from the |  | | Journal (article/letter/editorial) | | SATO Geological Surveyof Japan,Yatal>e-Higashi 1-1-3,Tsukuba, Ibaraki305,Japan Abstract The Fujigatanitungsten... Oxygen fugacity was lower than the pyrrhotite-pyrite-magnetite buffer, and sulfur fugacity was at or...skarn depositsin Japan are divided into two types: a scheelitetype, including the Fujigatani deposit,and a...rocks, respectively. The reducednature of the Fujigatani deposit was presumablygeneticallyconnectedwith...by tungstenmineralization in Japan(Sato, 1977b). TIlE Fujigatani mine is locatedin the Kuga district |  | | Journal (article/letter/editorial) | | J. Japan. Assoc. Min. Petr. Econ. Geol. 74, 357-375, 1979. MINERALOGICAL STUDY ON THE WOLFRAMITE SERIES...SERIES FROM THE CHUGOKU DISTRICT , SOUTHWEST JAPAN (I) RELATIONSHIPS BETWEEN AND LATTICE CHEMICAL ...Science , Hiroshima University, Hiroshima, 730, Japan In the Chugoku the Late around mineralogical...b0, occurrence Fe/Mn natural unit influence mine a0, compositional rare the substitution of... parameters exception the of the lattice Japan, Early and relationship the with in the | | | Journal (article/letter/editorial) | | J. Japan. Assoc. Min. Petr. Econ. Geol. 82, 353-361, 1987 Fluid inclusion study on the Itaga tungsten...tungsten deposit Ashio district, , Japan YASUHIRO SHIBUE Geoscience Institute,HyogoUniversity of TeacherEducation...TeacherEducation , Yashiro-machi, Kato-gun,Hyogo673-14,Japan Fluid inclusion hydrothermal as study solution...responsible the tungsten Takatori, deposits Fujigatani, in Japan, Kiwada, (Manuscript received, June 27...other Japanese tungsten deposits. Wolframite, pyrite, and topaz are disseminated in porphy ritic granite |  | | 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...someporphyriesand rhyogranitic rocks from the Ohtani, Fujigatani, and lites in the vicinityof ore depositsare...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 |  | | Journal (article/letter/editorial) | | Agesof the Major Tungstenand Molybdenum Deposits in Japan KEN' SI-IIBATA AND SHUNSO ISHIHARA Abstract Th...similarto thoseof the Tungstenprovinceof southwest Japan,K-Ar agesequivalentto thoseof the Molybdenurnprovincehavenot...a high magnetitecontent (Ishihara, of southwest Japan. However, some of the so1971b; Kanaya and Ishihara...part of Yamaguchi Prefecture, which is the second-most importantarea for tungsten mining in Japan, pegr...the Akemidani orebodyof the Fujigatani mine and 95.8 m.y. at the Kiwada mine. Mus- Xt•= 4.72 x 10-•ø/yr |  | | Journal (article/letter/editorial) | | Paragenesisof the Huanzala Mine, Central Peru HIDEKI IMAI, MASASHI KAWASAKI, MITSUO YAMAGUCHI, AND MIKIO TAKAHASHI...SaitamaPrefecture,Japan362 Abstract The Huanzala mine is a zinc and lead mineral deposit found in the...silver-tin-tungstenand miscellaneousminerals. The pyrite orebodiescanbe groupedby textureinto two kinds...are, from bottom to top, chert (Chimu THE Huanzala mine is situated in central Peru, about Formation), ...north-northwest-trending (Fig. •). pany, Ltd. In 1981, the mine produced900 metric The Huanzala deposit occursin |  | | Journal (article/letter/editorial) | | University of Tsukuba, Sakura-mura, Ibaraki 3053, Japan. 1986; (Received July 30, Accepted November ...fluids responsible for major skarn deposits in Japan, using the isotopic data on skarn calcites INTRODUCTION...Inner Zone of southwestern Japan, and OSW: Outer Zone of southwestern Japan. TTL: Tanagura tectonic line...calcitesfrom Japanese skarn deposits 613c%o(PDB) Name of mine N Mean Range Kitakami and Abukuma Regions (130 ^...(Yamato) 20 Yoshiwara 21 Tsumo 22 Sasagatani 23 Fujigatani 24 Kuga 3 8 5 11 5 9 4 6 6 7 6 6 -5.42 -5.42 |  | | Journal (article/letter/editorial) | | the composition of the wolframite series from SW Japan and possible factors controlling compositional variations...of Science, Yamagata University, Yamagata 990, Japan 2 Institute of Geology and Mineralogy, Faculty of...of Science, Hiroshima University, Hiroshima 730, Japan Abstract. The regional and local variations in the...magnetite-series granitoids in the Inner Zone of SW Japan were investigated using X-ray diffraction and microprobe... while, as exemplified by the Kaneuchi mine, Kyoto Prefecture, the wallrock chemistry and pH of ore fluids |  | OGATA, Takeyuki, ISHIYAMA, Daizo, MIZUTA, Toshio, NAKASHIMA, Kazuo (2002) Coexistence of a Fluid Phase with Granitic Magma: Geochemical Characteristics of REE and Cu in Miyako Granite and in Scheelite-bearing Aplitic Veins at the Yamaguchi Cu-W Skarn Deposit, Iwate, Japan. Resource Geology, 52 (2) 173-186 doi:10.1111/j.1751-3928.2002.tb00129.x | Journal (article/letter/editorial) | | Scheelite-bearing Aplitic Veins at the Yamaguchi Cu-W Skarn Deposit, Iwate, Japan Takeyuki OGATA, Daizo ISHIYAMA...Resources Science, Akita University, Akita 010-8502, Japan [e-mail: takeyuki_ogata@galena.mine.akita-u.ac.jp]...Science, Yamagata University, Yamagata 990-8560, Japan Received on October 9, 2001; accepted on March 22...located in the Northern Kitakami belt, Northeast Japan. The formation of the scheelite-chalcopyrite-magnetite-bearing...and scheelite-chalcopyrite-magnetite-bearing Yamaguchi skarn deposit was closely associated with the |  | 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...metamorphosed equivalents, and by bedded cupriferous pyrite deposits associated with submarine acidic tuffs |  | | 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) | | Petrogenesis of theCopper-Bearing Skarnat theMasonValley Mine, YeringtonDistrict,Nevada MARCO T. EINAUDI Abstract...Abstract Skarn formation at the Mason Valley mine occurred at a depth of 2,000 m on the outer fringe of...garnet, pyroxene, and amphibole. The MasonValley mine (MVM) is ideallysuited is a small copper-bearingskarn...400 ft. The 300 and mentary and volcanicrocks. 400 mine levels were mapped on the scale 1 in. = 40 ft. Normal...percent garnet, pyroxene,calcite,chalcopyrite,and pyrite. Particular attention was paid to texturesand cross-cutting |  | | Journal (article/letter/editorial) | | Strata-Bound Scheelite Skarns in the Riba de Alva Mine, Northeastern Portugal L. MIGUEL GASPAR† Departamento...metasediment-hosted distal scheelite skarns from the Riba de Alva mine, Barca de Alva-Escalhão region, northeastern Portugal...1997; Gaspar and Inverno, 1998a) in the Riba de Alva mine, northern Portugal, one of the scheelite-mineralized...discovery of mineralization dates back to 1948 and the mine workings, both on the surface and underground, were...from 1951 to 1978, with MIRAL and METAMERQUE as mine operators. According to the last report (METAMERQUE |  | | 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) | | Geological Surveyof Japan, Tsukuba,Japan The occurrence of fluorite deposits in Japan is limited in the...tin and tungsten mineralization within Southwest Japan. The deposits were formed near acidic igneous rocks...INTRODUCTION There are many fluorite deposits in Japan occurring in or close to acidic igneous rocks of...taken into consideration. Fluorite deposits ii~ Japan are grouped into two types based on the mineral...are sometimes associated with calcite, clays and pyrite, they are practically free of metallic ore minerals |  | | Book | | Tertiary skarns are known (e.g. in Malaysia and Japan) but such regions are rare. Rundkvist suggests that...syngenetic base metal deposits (e.g. Kuroko-type, Japan). (f) Similar to (e) except that transport and...metals occurring in deposits related to them in Japan (after Ishihara, 1980). some skarns, depending...related epigenetic deposits with granite types in Japan show that all the Sn and most of the W produced...— MAGNETITE — SPHENE — MICA — QUARTZ — PYRITE — PYRRHOTITE — CHALCOPYRITE — SPHALERITE — |  | | Journal (article/letter/editorial) | | deposit in Inner Mongolia, China. In the Huanggang mine, Nos. 1 to 4 Fe ore bodies are arranged along a...kilometers northeast of the Sn Ore Body of the Huanggang mine, has also been studied for comparison, and the results...50 km west of Linxi Town (Fig. 1). The Huanggang mine, operated at present by Inner Mongolia Huanggang...address: Kagoshima University, Kagoshima 8900065, Japan 1 With additional position at Beijing Institute...II zone and Sn O.B. at Skarn No. III zone in the mine were investigated, along with the Sumugou base-metal |  | | Journal (article/letter/editorial) | | red aluminousor Canada,the UnitedStates,Mexico,Japan,and Korea siliceousrocks,suchas thoseat Cantung(Dick...Copper Zinc-lead Shinyamadeposit, Kamaishimine, NE Japan Pine Creek, California MacMillan Pass (Mactung)... Canada Sasanodeposit Yoshiokamine, SW Japan Victoria mine, Nevada DouglasHill and CastingCopper mines(Yerington...(numbers refer to localities on Fig. 1) 1. Empire mine, B.C., Canada (Sangster, 1969;Haug, 1976) 2. Larap...Strawberry mine, California (Nokleberg, 1981) 5. Sangdong, Korea(John, 196•) 6. Fujigantani,SW Japan(Sato |  | Zürcher, Lukas, Ruiz, Joaquín, Barton, Mark D. (2001) Paragenesis, Elemental Distribution, and Stable Isotopes at the Peña Colorada Iron Skarn, Colima, Mexico. Economic Geology, 96 (3) 535-557 doi:10.2113/gsecongeo.96.3.535 | Journal (article/letter/editorial) | | distance from the diorite intrusion. Co/Ni ratios in pyrite increase away from the diorite. Sulfides contain...alteration event. This 20-m-wide magnetite-hematite-(pyrite) endoskarn occurs at depth along the diorite-carbonate...diorite-carbonate contact in the western sector of the mine. High Ti magnetite from this zone contrasts with the...veins with wide kaolinite alteration halos. In the mine area, aplitic dikes related to this intrusive event...Puerto Vallarta batholith and the El Encino iron mine areas (PantojaAlor, 1983). Sierra El Mamey, the |  | | Journal (article/letter/editorial) | | Geological Survey of Japan, Higashi 1-1-1 Central 7, Tsukuba, Ibaraki 305-8567, Japan [e-mail: sato.gsj@aist...different between central Sikhote-Alin and Northeast Japan; reduced-type and oxidized-type, respectively. The...were closer together before the opening of the Japan Sea in the Miocene, may have been juxtaposed under...complex, plate reorganization, Kitakami, Northeast Japan 2. Outline of Geology 1. Introduction 2.1. Regional...Cenozoic time, but were separated by opening of the Japan Sea in the Miocene. The two regions consist mainly |  | Elongo, V, Lecumberri-Sanchez, P, Legros, H, Falck, H, Adlakha, E, Roy-Garand, A (2020) Paragenetic constraints on the Cantung, Mactung and Lened tungsten skarn deposits, Canada: Implications for grade distribution. Ore Geology Reviews, 125. 103677pp. doi:10.1016/j.oregeorev.2020.103677 | Journal (article/letter/editorial) | | anticline plunging to the NE and intruded by the Mine 107 Stock, a peraluminous S-type medium-grained...monzogranite (Mathieson and Clark, 1984; 108 Fig. 2). The Mine Stock (101.15 ± 0.44 to 98.2 ± 0.4 Ma from U-Pb...albite (Na), Itrongay sanidine (K), and Navegadora Mine spessartine-almandine (Mn). 174 For Ba-bearing...sphalerite are rare at Mactung. Chalcopyrite and pyrite are relatively abundant 262 at Lened (Fig. 8F)...381 tend to form in reduced environments while pyrite forms in more oxidized environments (Einaudi 382 |  | | Journal (article/letter/editorial) | | Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan [e-mail: mohamed_elrhazi@hotmail.com] Received on...range is located ~30 km southwest of Nador, a rising city that faces the Mediterranean Sea (Fig. 1). The geology...Setolazar, Axsara, Wiksane, and Bokkoya open pits, and mine data is summarized as follows. Two layers of magnetite...very small in all open pits at the Beni Bou Ifrour mine. Calc-silicate minerals are completely absent in...chlorite 0.5 mm H calcite magnetite pyrite chlorite chalcopyrite pyrite 0.5 mm magnetite 0.5 mm Fig |  | | Journal (article/letter/editorial) | | oxygen fugacity which decreases with time from the pyrite-pyrrhotite-magnetite towards the QFM buffer. Available...intermediate composition (Boyle 1979; Meiner 1989). In Japan, gold is preferentially concentrated in the epidote-rich...Mountains, Yukon, and those mined at the Nickel Plate Mine, British Columbia (Lamb et al. 1957) with an average...STeBi 2 phase Galena Native bismutl" Native gold Pyrite Albite K.felspar Muscovite Calcite Chlorite fitanite...corroded core of 1611ingite (Fig. 4). Minor amounts of pyrite, chalcopyrite, galena, sphalerite, native bismuth |  | | Journal (article/letter/editorial) | | fluidswith wall rocksto form porphyrypyrite, skarn pyrite, andskarnpyrrhotiteandmixingwith formationalsulfurin...theKuhnshowing, rimmedby molybdoscheelite), molybdenite,pyrite, massive garnetskarn(unit6a)passes easterlythrough...showing.Molybcz: zo. (2) doscheelite, magnetite,pyrite,andrarehematiteform fine disseminations and laminationsin...maximum temperature for epidote-bearing garnet pyrite andpyrrhotite) occurat the skarncontacts.At skarnat...present, roxeneskarn.Scheelite,chalcopyrite,andrare pyrite sumingthat Pauid= Ptotal. isochore formfine disseminations |
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