 | 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) | | 1988 K-Ar ages Inner Zone of skarn deposits of southwestern Japan MAKOTO WATANABE1, HIROTSUGU NISHID02*...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...skarns, Tottori Prefecture (60.7 ± 3.1, 60.8 ± 1.9 Ma); muscovite from the Kuga and Kiwada scheelite skarns |  | | Journal (article/letter/editorial) | | SATO Geological Surveyof Japan,Yatal>e-Higashi 1-1-3,Tsukuba, Ibaraki305,Japan Abstract The Fujigatanitungsten...altera- tion consists mainlyof clinopyroxene-garnet skarn(•-• 10 m) and, locally,plagioclasemuscovite-chloriterock...occursonly in thick skarn,alongquartzveins. This rock may have been formed from the skarn due to intense metasomatism...cm) formedalong the contactwith limestone,but the skarn and adjacentlimestonewere locallyreplacedby quartz-calciterock...ore was altered to barren epidote-clinopyroxene skarn (2-$0 cm). Chemicaldata for the principalmineralswere |  | Sasaki, Yuka, Imaoka, Teruyoshi, Nagashima, Mariko, Nakashima, Kazuo, Sonehara, Takafumi, Yagi, Koshi, Itaya, Tetsumaru (2016) The Cretaceous Ofuku Pluton and Its Relation to Mineralization in the Western Akiyoshi Plateau, Yamaguchi Prefecture, Japan. Resource Geology, 66 (2) 85-113 doi:10.1111/rge.12090 | Journal (article/letter/editorial) | | Mineralization in the Western Akiyoshi Plateau, Yamaguchi Prefecture, Japan Yuka SASAKI,1 Teruyoshi IMAOKA,1 Mariko...of Science and Engineering, Yamaguchi University, Yamaguchi 753-8512, Japan, 2Department of Earth and Environmental...Science, Yamagata University, Yamagata 990-8560, Japan, 3Kobe Branch, Hiruzen Institute for Geology and...Ltd., 1-3-28 Hyogocho, Hyogo-ku, Kobe 652-0813, Japan, 4Hiruzen Institute for Geology and Chronology Co...Ltd., 2-5 Nakashima, Naka-ku, Okayama 703-8252, Japan, and 5Research Institute of Natural Sciences, Okayama |  | | 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...tungsten Takatori, deposits Fujigatani, in Japan, Kiwada, (Manuscript received, June 27, 1987; accepted...(1980), Fluid inclusions in minerals from the Kiwada mine Mining Geol., 30, 34 (in Japanese). Hamasaki | | | Journal (article/letter/editorial) | | it is calculated responsible for Fujigatani, Kiwada, and Pressure and temperature calculated are...(1966) made thermodynamic cal calculations. the Japan hydrothermal 10-3.33, reducing Introduction...of the Kaneuchi, Ohtani, Takatori, Fujigatani, Kiwada and Kuga deposits. The abbreviations in parenthe...deposits present solutions. tungsten Kaneuchi, Kiwada, are and considered in the study. Some ...pressures 1.5•}0.2, 1 to (Hut commun.), the Kiwada, 1.1, for estimated study 1981), Shibue pressures |  | | Journal (article/letter/editorial) | | Charlottesville] at 12:13 03 August 2012 from Japan Part 4: The University of Tokyo (Wakabayashi)...Figure 1. Map of Japan, by William Besse. 188 ROCKS & MINERALS F or my last “News from Japan” article, I...Petrov to be coauthor. Alfredo regularly travels to Japan for the Osaka and Tokyo mineral shows and to lead...the stifling heat and humidity one wonders if this city was chosen for an international congress on global...rooftop beer gardens, affording nice views of the city and the sunset over the western mountains, are a |  | | Journal (article/letter/editorial) | | DEPOSITS FOUND IN CONTACTMETAMORPHIC AUREOLES IN JAPAN Takeo Watanabe a a Geological Institute, Faculty...DEPOSITS FOUND IN CONTACT-METAMORPHIC AUREOLES IN JAPAN, International Geology Review, 2:11, 946-966, DOI:...DEPOSITS FOUND IN CONTACT-METAMORPHIC AUREOLES IN JAPAN' by Takeo Watanabe' • translated by Kinkiti Musya...environments many replacement deposits of Ca-Fe-skarn type occur commonly, while pneumatolytic to hydrothermal...the study of ore deposits in the contact zones in Japan 947 Genetic classification of metalliferous deposits |  | | Journal (article/letter/editorial) | | SkarnDepositsin Japan TAKANORI NAKANO, Instituteof Geoscience, Universityof Tsukuba,Ibaraki305, Japan HIDEHIKO...Tokyo113,Japan AND MASAAKI SHIMIZU UniversityMuseum,Universityof Tokyo,Hongo,Tokyo113, Japan Abstract...singleminescale.On the otherhand,skarns from78 oredeposits in Japan revealregionalvariationsin the 87Sr/8aSr ratiorangingfrom0...Thisisconsistent asa wholewiththe occurrence of skarn deposits;copper-irondepositsform in geologicsettingsdominatedby...carried out for three representativeskarndeposits, of skarn fluids for different ore metal types. The the K |  | | 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...presence of molybdenite Akenobe type") and base metal skarn deposits are quartz veinsand somelead-zincdepositsmostlyof...part of Yamaguchi Prefecture, which is the second-most importantarea for tungsten mining in Japan, pegr |  | | 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...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...abandonedTokuryu gold mine which is locatedabout30 km southof the Toyoha mine. The porphyryis petrographically | | | Journal (article/letter/editorial) | | NaCl Fujigatani and 60 wt. solutions %) Kiwada and tungsten YASUHIRO Geoscience Institute...fluid diagrams is and found Homogenization Kiwada tungsten (7 wt. % NaCl that the fluids temperature...consideration of was, for mineralization the Kiwada, has not of Very NaCl tungsten the high...near-linear and shown well saline mixing mixing Japan Japan bars, behavior as of solution.Introduction... Although to (e.g., 1. NaCl contain the Japan. 1986; data wt.%. construct diagrams results | | | 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 |  | 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...ilmenite — series granitoids occurring in southwestern Japan, eastward younging is also recognized in these mineral |  | YAMAZAKI, ERIKA, NAKAI, SHUN^|^rsquo;ICH, YOKOYAMA, TETSUYA, ISHIHARA, SHUNSO, TANG, HONGFENG (2013) Tin isotope analysis of cassiterites from Southeastern and Eastern Asia. GEOCHEMICAL JOURNAL, 47 (1) 21-35 doi:10.2343/geochemj.2.0237 | Journal (article/letter/editorial) | | Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8851, Japan 2 Earthquake Research Institute, The University...Tokyo 113-0032, Japan 3 Geological Survey of Japan, AIST, Tsukuba, Ibaraki 305-8567, Japan 4 Laboratory...variations in Sn in cassiterite from Asian countries (Japan, China, Thailand, and Malaysia), via multicollector...124Sn/120 Sn were observed for cassiterite samples from Japan and China. The isotopic fractionations of all the...Copyright © 2013 by The Geochemical Society of Japan. 21 analysis for cassiterite samples by using |  | | Journal (article/letter/editorial) | | Miyazawa (1940, p. 16) from the Iwato mine, Miyazaki Prefecture, Japan. These assemblages Cassiterite,SnO2...malayaitewouldbe foundin the Kiwada here be postulated:it is presumablyincompatible mine, SouthwestJapan, but...Brogger, 1890, p. 64 analcite, etc. Stiepelmann mine, Arandis, South West Africa Metasomatic tin deposit...SarydzhazRiver region, E. Kirgizia (Central Asia) USSR Skarn-hydrothermal tin deposit. Danburite, axinite, tourmaline...calcite. 272 D. M. TABLE 3. BURT Some Reported Skarn Associationsof Cassiterite with Danburite Location | | | Report (issue) | | category ........ Estimated cumulative and annual mine production of tungsten contained in ore and concentrate—...deposits. Most current mine production of tungsten is from vein/ stockwork, skarn, porphyry, and strata-bound...accounted for over three-fourths of the world’s mine production of tungsten. China alone produced about...consist of two types: a vein/stockwork zone and a skarn zone. As subsequent sections of this report show...mines in Brazil and boosted production in Bolivia, Japan, and Spain. In the 1950’s, during and after the |  | | Journal (article/letter/editorial) | | data Applications of hydrothermal to ore in Japan YASUHIRO SHIBUE Geoscience Institute, Yashiro-cho...(Received March 3, 1990; Accepted May Education, Japan 9, 1991) Temperature-chloride mixing diagrams at...data of the Ohe, Toyoha, and Fujigatani-Kiwada deposits in Japan indicates that high temperature and high...Toyoha deposit; 360°C and 7.4 wt% for the Fujigatani Kiwada deposits) mixed with low temperature and low salinity...Toyoha deposit; 250°C and 1.9 wt% for the Fujigatani Kiwada deposits). quist and Henley, 1985; Von Damm, 1988) |  | | 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) | | Application of the Sphalerite Geobarometer to Some Skarn-Type Ore Deposits M. Shimizu and H. Shimazaki Geological...Hongo, Tokyo, Japan Based onthe equation recently determined, formation pressures of skarn-type ore deposits...compositional variation in sphalerite. Most of the Cu-Fe skarn deposits studied were formed under pressures of...pyrite and pyrrhotite is c o m m o n l y observed in skarn-type ore deposits. Electron microprobe studies have...pyrrhotite, and are from skarn-type ore deposits. They cover about 60 deposits in Japan, and about 50 in other |  | | Journal (article/letter/editorial) | | deposit in Inner Mongolia, China. In the Huanggang mine, Nos. 1 to 4 Fe ore bodies are arranged along a...systematically changed. Garnet is the most predominant skarn mineral throughout the deposit. Hastingsitic amphiboles...anisotropic less-andraditic garnet. The presence of white skarn along the boundary between main skarns and host...relatively oxidizing condition was achieved for garnet skarn and magnetite ore in the distal, Nos. 2 to 4 Fe...and Sumugou deposit, compared to that for garnet skarn in the proximal, No. 1 and Sn ore bodies. Preliminary |  | | Journal (article/letter/editorial) | | University of Tsukuba, Tsukuba-shi, Ibaraki305,Japan TAKASHI YOSHINO, Instituteof Technology, University...University of Tsukuba, Tsukuba-shi, Ibaraki305,Japan HIDEHIKO SHIMAZAKI, Geological Institute,Facultyof Science...Tokyo113,Japan AND MASAAKI SHIMIZU University Museum,University of Tokyo,Hongo,Tokyo113,Japan Abstract...classification and definingof the environment of skarn formation. Introduction However,more comprehensive...skarnpyroxenesare necessary to confirmthe validity SKARN depositsvaryregionallyin metalcomposition of the |  | | Journal (article/letter/editorial) | | Tokyo, Japan Abstract Chemical analysis of biotite in representative granitic rocks in Japan shows that...deposits, skarn-type ore deposits have a clear genetic relationship to granitic rocks. In Japan, the skarn-type...Uchida, Ohkubo 3-4-1, Shinjuku, Tokyo 169-8555, Japan. Email: weuchida@waseda.jp © 2007 The Authors Journal...granitic rocks in the 15 districts (Fig. 1) of Japan with or without hydrothermal mineralization were...Yaguki mine (Cu–Fe), 1.5 kb; Ohkawame mine (Mo), 1.3 kb; Kamaishi mine (Cu-Fe), 1.2 kb; Chichibu mine (CuFe-Pb-Zn) |  | 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) | | and Stable Isotopes at the Peña Colorada Iron Skarn, Colima, Mexico LUKAS ZÜRCHER,† JOAQUÍN RUIZ, AND...Tucson, AZ 85721 Abstract The Peña Colorada iron skarn is located in the southern part of the Guerrero...diorite-carbonate contact in the western sector of the mine. High Ti magnetite from this zone contrasts with...of the mineralization at the Peña Colorada iron skarn, located in southwestern Mexico (Fig. 1), has been...and geologic setting of the Peña Colorada iron skarn. The earliest work on Peña Colorada was done by |  | | Journal (article/letter/editorial) | | Fluids for the Takatori Tungsten-copper Deposit, Japan Yasuhiro SHIBUE, Hitoshi CHIBA*,1, Minoru KUSAKABE*...Education, Yashiro-cho, Kato-gun, Hyogo 673-1494, Japan [e-mail: yshibue@sci.hyogo-u.ac.jp] * Institute...Tottori 682-0193, Japan ** Geological Survey of Japan, Tsukuba, Ibaraki 305-8567, Japan 1 Present address:...Sciences, Okayama University, Okayama 700-8530, Japan Received on December 10, 2003; accepted on May 11...tungsten–copper deposit at Takatori in Ibaraki Prefecture, Japan. Temperatures of the hydrothermal fluids are |  | | Journal (article/letter/editorial) | | assemblagesblagesformed from limestone(here referred to as skarn), and varioustypes of altered pelitic rocks,a major...f Middle to Late Cretaceous age. skarn skarn o Sn-bearing skarn \ \ \ Eastern Marginal • Belt arch...The geologicalcharacteristics of W-Cu(Zn) skarns skarn ...... o_O_o% .......... B.C. Yukon I MacTung...2. Locationof W-Cu(Zn) skarnsand distributionof skarn unitswhich overlie(conformablyor unconformably)...Hornfels [] Lower Carbonate, skarn I•Upper [] Quartz monzonite Carbonate, skarn '• drillhole FIe. 3. Geologic |
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