 | 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...throughoriginalfissures which were later filled with quartz veins. Scheeliteprecipitatedin the alterationzonesformedalongthe...skarn and adjacentlimestonewere locallyreplacedby quartz-calciterock (• $0 cm) in the late stage,whenthe...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 |  | | 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...as liquid-rich Vapor-rich and deposit, but quartz, and from to 5.3, 420•K inclusions in tungsten...mineral izations. Among Kaneuchi, other minerals quartz , from 388•K to primary fluid from saline | | | Journal (article/letter/editorial) | | solutions data, it is calculated responsible for Fujigatani, Kiwada, and Pressure and temperature calculated...(1966) made thermodynamic cal calculations. the Japan hydrothermal 10-3.33, reducing Introduction...Locality map of the Kaneuchi, Ohtani, Takatori, Fujigatani, Kiwada and Kuga deposits. The abbreviations...deposits, Takatori, Kuga (Fig. 2) Among the Fujigatani, deposits present solutions. tungsten Kaneuchi...Higashimoto, under tions Kuga deposit Fujigatani formed the Fujigatani near species and smaller a 8 | | | 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...variation together obtained mostly previous quartz district, wolframites Tertiary regional parameters |  | | Journal (article/letter/editorial) | | Okayama University, Misasa, Tottori-ken, 682-022 , Japan (Received March 26, 1986: Accepted May 15, 1986)...0), Yaguki (-1.5 +2.5) and Fujigatani (+10.5 ' +10.8) skarn depositsin Japan. Oxygenisotope values of ore-formingfluids...solution and associated minerals such as magnetite and quartz in the deposits. On the basis of these investigations...solutions responsible for major skam deposits in Japan, using the isotopic data on skarn calcites from...oxygen in some representative skarn deposits in Japan, and to check whether the data are concordant with |  | | Journal (article/letter/editorial) | | Characteristics of SkarnDepositsandRelated Acid Magmatismin Japan HIDEHIKO SHIMAZAKI Abstract Most Japanese skarn...Cretaceousor Miocene age. The granitic rocks in Japan have been subdividedinto a magnetite-bearingand...graniticrocks, tiary; the outer zone of southwestern Japan, Miocene; papersby Ishiharaand his colleagues are...bulk chemicalcompositionexcept for ferric/ferrous Japan. As shownin the figure, eachgranitic belt ratios...rocks recognizedin the Lachlan fold belt of south- Japan. Granitic rocks in the western end of the belt (H |  | | Journal (article/letter/editorial) | | clearlydemonstrated in the Inner Zoneof southwestern Japan. The Cu- and Zn-Pb-richbeltsare recognizedin the...vein-type deposits in the Inner Zoneof southwestern Japan. This suggests that the precipitation of basemetalsin...of pyrometasomatic (skarn) depositsare known in Japan. They are related geneticallyto acidicand inter...out during the past 31 years, 1941-1971, from each mine were calculated usingunpublishedAnnual Reportsof...that given by 1965); Tsumo (Shimazaki,1968a,b); Fujigatani the true ratios of metal amountsprecipitatedin |  | | 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...We collectedmaterials suitable for K-Ar dating quartz veins having "greisen"envelopes.Skarnfrom demonstrativeore...a high magnetitecontent (Ishihara, of southwest Japan. However, some of the so1971b; Kanaya and Ishihara...Akenobe type") and base metal skarn deposits are quartz veinsand somelead-zincdepositsmostlyof also included |  | | Journal (article/letter/editorial) | | fromSomeMiningAreasin Japan SUKUNE TAKENOUCHI AND HIDEKI IMAI Abstract Glassand fluid inclusionsin quartz of rhyolites...rhyolites,porphyries,and granitesfrom mining areas in Japan were investigated. Rhyolites contain various types...igneousrocksand ore deposits. In quartz phenocrysts of rhyolite and porphyry and in quartz grains of pyroclastics...andconsideredto be samplesof the magmaticmelts from which the quartz grains crystallized. If the ore-formingsolutionswere...someporphyriesand rhyogranitic rocks from the Ohtani, Fujigatani, and lites in the vicinityof ore depositsare |  | | 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...Introduction 0361-0128/90/1069/794-2253.00 794 JAPAN: SrISOTOPE COMPOSITION OFSKARNS 795 exoskarn,...barren graniticbatholiths(A) anddike rocks(B) like quartz skarnswere studiedin the presentwork. Their lo- | | | Journal (article/letter/editorial) | | diagrams bars, of and hydrothermal NaCl Fujigatani and 60 wt. solutions %) Kiwada and tungsten... mixing Fujigatani, for temperatures less higher eq. hot systems sures Fujigatani NaCl of...cooling and dilution of hydro diagram temperature quartz the low-temperature been Many fluid inclusion...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) | | magnetite-series ilmenite-series granitoids in Japan SHUNSO ISHIHARAI and SHIGERU TERASHIMA2 Government...983' and Geological Survey of Japan, Higashi 1-1-3, Tsukuba, 3052, Japan (Received March 23, 1989; Accepted...Sanin Belt, Hidaka Belt, Outer Zone of Southwest Japan and Green Tuff Belt, were analyzed for total and...(Ryoke, Sanyo, Hidaka and Outer Zone of Southwest Japan) granitic ter ranes. The total number of the samples...hornblende; bt, biotite; ms, muscovite; Qd, quartz diorite; Qmd, quartz monzodiorite; Tn, tonalite; Gd, granodiorite; |  | | Journal (article/letter/editorial) | | University of Tsukuba, Sakura-mura, Ibaraki 3053, Japan. 1986; (Received July 30, Accepted November ...stage for skarn silicates to stages for magnetite, quartz and calcite. Based on the results of these previous...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 ^ |  | | 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...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...porphyrywasintrudedinto the Chimu Formationjust to the east of the mine (Fig. 1). The absoluteage of the granodioriteporphyry |  | | 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 | | | Journal (article/letter/editorial) | | J. Japan. Assoc. Min. Petr. Econ. Geol. 73, 231-240, 1978 PHASE RELATIONS IN IN THE H20-CO2 SYSTEM...in of the content and/or hedenbergite (6) quartz the systems calcite, in and favorable restricted...reactions: =calcite+magnetite+quartz+O2, hedenbergite+CO2+O2=calcite+magnetite+quartz. the inferred mole among...are usually composed of calcite, magnetite and quartz with sulfidesand oxides as ore minerals. For this...amongcalcite, andradite, hedenbergite, magnetite and quartz should indicate the favorable conditions of formation |  | 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 |  | | 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...inclusion data of the Ohe, Toyoha, and Fujigatani-Kiwada deposits in Japan indicates that high temperature and...the Toyoha deposit; 360°C and 7.4 wt% for the Fujigatani Kiwada deposits) mixed with low temperature and...the Toyoha deposit; 250°C and 1.9 wt% for the Fujigatani Kiwada deposits). quist and Henley, 1985; Von |  | | Journal (article/letter/editorial) | | Hiyoshi, Kohoku ku, Yokohama, Kanagawa 223 8522, Japan ** Department of Astronomy and Earth Science, Tokyo...4 1 1 Nukui kitamachi, Koganei, Tokyo 184 0015, Japan - - - - - - - - Experiments on metasomatism...We used huebnerite obtained from the Pasto Bueno mine, the Republic of Peru, as the starting material...crystals with a length of several centimeters. Quartz coexists with huebnerite. A large number of pores...content of scheelite from the Date-Nagai mine, Fukushima Prefecture. Bulletin of Tokyo Gakugei University |  | 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 |  | | 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...terized by the simple mineral assemblage, fluorite-quartz. Although the ores are sometimes associated with |  | Vlasova, D. K., Podlesskiy, K. V., Kudrya, P. F., Boronikhin, V. A., Muravitskaya, G. N. (1985) ZONING IN GARNETS FROM SKARN DEPOSITS. International Geology Review, 27 (4) 465-482 doi:10.1080/00206818509466434 | Journal (article/letter/editorial) | | porphyrites and limestones (D 2 ) Diabase porphyrites and quartz porphyries ( J 2 + 3 ) Limestones and dolomites... (C3-P1) Granites (C3) Kuga (Japan) Fujigatani (Japan) Kagata (Japan) Kuru-Tegerek (Middle Asia) Granites...skarn-scheelite deposits of Japan. 1) Ingichke, 2) Lyangar, 3) Maykhura, 4) deposits of Japan. deposits of Middle...Middle Asia (USSR) and Japan. Table 3 presents the chemical analyses of type II zoned garnets. The pattern...zoning on the boundary between the garnet grains and quartz, calcite, amphibole, and ore minerals. In the |  | | 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...armenite ± scapolite; and late-stage veins with quartz (or fluorite or calcite) ± clinozoisite ± andesine...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 |  | | 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 |
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