 | | Journal (article/letter/editorial) | | Hokuroku District, Northeast Japan HARUHISA MOROZUMI,†,* NOBUAKI ISHIKAWA, Japan Oil, Gas and Metals National...1310 Omiya, Saiwai, Kawasaki, Japan 212-8554 AND YOHEI ISHIKAWA Akita Prefectural Resources Technology...Kazuno-gun, Akita, Japan 017-0202 Abstract In the inner zone of the northeastern Japan arc, kuroko-type...Introduction THE METAL MINING AGENCY of Japan (MMAJ), now called the Japan Oil, Gas and Metals National Corporation...situated in the inner zone of the northeastern Japan arc (Ministry of Economy, Trade and Industry, 2002) |  | | Journal (article/letter/editorial) | | Potential for Base and Precious To Metal Deposits in Japan 2020) Antonio ARRIBAS and Toshio MIZUTA Faculty...Sciences, Akita University, Akita, Japan Abstract There are no known porphyry copper deposits in Japan. Attempts...latter option. In this article, we focus on Akita Prefecture and the surrounding areas and consider the...Honshu and that it serves as a proxy for Japan in general. Akita is rich in mineralization styles and deposits...active vein mine, closed in 1978. Kuroko deposits, the main source of metal production in Akita in the 20th |  | | Journal (article/letter/editorial) | | Implication for the Absence of Porphyry Cu Deposits in Japan Yasushi WATANABE, Ryuya SATO* and Adi SULAKSONO...of Akita University, Akita, Japan Abstract The role of potassic alteration and associated quartz veins...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...association with phyllic alteration, represented by quartz, sericite and pyrite, or chalcopyrite in chlorite– |  | | Journal (article/letter/editorial) | | low-sulfidation epithermal gold deposit, Northeast Japan arc Teruhiro Suzuki | Shota Satori Graduate School...of International Resource Sciences, Akita University, Akita, Japan Correspondence Yasushi Watanabe, Graduate...Resource Sciences, Akita University, Tegata-Gakuenmachi 1-1, Akita 010-8502, Japan. Email: y-watanabe@gipc...y-watanabe@gipc.akita-u.ac.jp Funding information Japan Society for the Promotion of Science, Grant/Award Number:...deposits in the Tohoku region of the Northeast Japan arc; however, these deposits have undergone limited |  | | Journal (article/letter/editorial) | | Suruey of lapan, Kqwada-cho 8, Shinjuku-ku, Tokyo, Japan Icnno SuNlcawa Institute ol Mineralogy, Petolo...negative striations collected from four localities in Japan. It is concluded that positive striations are associated...Shakanai mine, Akita Prefecture. Crystals with negative striations from a few other localities in Japan were...ShakanaiMine Shakanai mine, Akita Prefecture, is one of the famous Kuroko-type deposits in Japan, bearing black...yellow ores (pyrite-chalcopyrite), siliceous ore (quartz-pyrite-chalcopyrite), and gypsum ores. Pyrite crystals |  | | Journal (article/letter/editorial) | | Science,Universityof Tokyo,Bunkyo-ku,Hongo,Tokyo113, Japan Abstract The assemblage and mode of occurrenceof...ganguemineralsvary with different deposittypes: quartz, chalcedonicquartz, adularia, calcite, smectite...zeolites,and kaolinitcin Au-Ag-richdeposits;chlorite, quartz, sericite,carbonates(calcite, rhodochrosite, siderite)...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 |  | | Report (issue) | | 84 c = 11.01 Z=4 X-ray Powder Pattern: Ani mine, Japan. Many of the reported associations of digenite...(3) 77.6 22.4 100.9 102.8 100.0 (1–2) Ani mine, Japan; by electron microprobe. All specimens contained...(3) Cu7 S4 . Occurrence: mine, Japan). In a drusy quartz vein (Ani mine, Japan); in a Kuroko ore deposit...(Matsumine Association: Djurleite, covellite (Ani mine, Japan); yarrowite, spionkopite, djurleite, wittichenite...Distribution: In Japan, in Akita Prefecture, from the Ani mine [TL], and in the Matsumine mine. At Neudorf |  | | Journal (article/letter/editorial) | | metallogenetic provincesof Late Tertiary age in Japan (dotted area). (After T. Watanabeand S. Iwao, 1959...(25). All of the samplesexceptone from the Hitachi mine were collected from ore depositsthat belong to the...JapaneseIslands) is summarizedby the GeoloigcalSurvey of Japan (9). The JapaneseIslands were affectedby intenseorogenicmovementof...situation was reversed. A subsidenceof the crust in the Japan Sea side area occurred. The districtalongthe FossaMagna...into•two major tectonicprovinces,namely Northeastern Japan and SouthwesternJapan, also subsided. A thick accumulationof |  | | 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) | | Geological Institute, University of Tokyo, Hongo, Tokyo (Japan) Institute of Earth Science, Fmulty of Culture,... University of Tokyo, Korrraba, Tokyo (Japan) (Received November 30, 1964) SUMMARY The authors have...alterations of Cenozoic and Mesozoic pyroclastic rocks of Japan, which contain several kinds of zeolites in abundance...alterations of Cenozoic and Mesozoic pyroclastic rocks of Japan which contain several kinds of zeolites in abundance...Yamagata, Japan (11) OkokuLinc, Akita, Japan (12) KLnnui Group, Yoshioka, 4 Hokkaido, Japan ; ; (13) Usui |  | | Report (issue) | | mineral col lector, was born in Kanazawa, Ishikawa Prefecture, on August 30, 1874. Soon after his graduation...at the Arakawa Mine, Akita Prefecture. In 1909, he was promoted to Director of the Mine and held. the...then that of the Director of the Yoshioka Mine, Okayama Prefecture, for about seven years altogether. He...technology in the first half of this century in Japan. He retired from the Advisory Board of the Mitsu...such volumes as " Beiträge zur Mineralogie von. Japan ", Neue Folge I and II (T. Ito, 1937), " Japanese |  | | Journal (article/letter/editorial) | | Khan University] at 00:19 02 January 2015 from Japan Part 3: Ko Mineral Collection, Osaka and Tokyo...Ohio 45056 rakovajf@muohio.edu Figure 1. Map of Japan, by William Besse. 440 ROCKS & MINERALS A t the...the top four collections of Japanese minerals in Japan. The Ko collection is particularly important because...specimens representing 159 mineral species, mostly from Japan with a concentration of specimens from the ore deposits...magnificent arsenopyrite and quartz (Ko #1508) from the Obira mine, Oita Prefecture. It is a huge matrix piece |  | | Journal (article/letter/editorial) | | Chalcocite-like materials from several localities in Japan and in U. S. A. are identified as the new phase...press). Of these from the Ani mine, diffraction patterns which Akita showed speci Pre ortho as...stable writer Japan, gave complex rhombic were X-ray studies the The from the Ani mine and this synthetic...identified Akita, all the in as Cu1.96S. S. Djurle by Sakurai, The phase of the Ani mine, have are...are the Osarizawa and the Nakauri mine, mine, Shizuoka, U. S. A. The to this new mineral Montana |  | | Journal (article/letter/editorial) | | Mineralization in the Hokuroku District, Northeast Japan Ryoichi YAMADA and Takeyoshi YOSHIDA Institute of...Science, Tohoku University, Aoba, Sendai 980-8578, Japan [e-mail: yamadary@ganko.tohoku.ac.jp] Received on...the most important Kuroko containing province in Japan. There are two cycles of the bimodal volcanic sequence...the post-ore dacitic rocks are characterized by quartz-plagioclasephyric aphanitic lava and dome. These...economically the most important Kuroko province in Japan such that a great deal of geological and petrological |  | | Journal (article/letter/editorial) | | Osaka AND Yosuruxo Suluezert, GeologicalSuney ol Japan, Kawata-cho, Shinjuhu, Tohyo AestRAcr subcell(++0/++0/N+)of...dimensionsof the phaseson crystals from the Ani Mine, Akita, Japan, by the single-crystal X-ray method' Sadanaga...this unidentifi.edphase and the material from the Ani Mine, the Iatter mineral has been studied in detail...results of the study on the material from the Ani Mine, in the course of which a new copper sulfide mineral...The mineral is named anilite after the Ani Mine, Akita, Japan, where the first specimen was discovered |  | | 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 |  | | Book | | characteristic such as the “Japan-Law” twinned rock crystals from Japan. Even though most of the classic...Localities of Asia Japan The Ichinokawa Mine, Saijo, Iyo Province, Ehime Prefecture, Island of Shikoku...Shikoku Ashio Mine, Shimotsuke Province, Tochigi Prefecture, Honshu The Ani and Arakawa Mines, Ugo Province... Akita Prefecture, Honshu The Obira Mine, Bungo Province, Oita Prefecture, Kyushu; The Toroku Mine, Hyuga...Miyazaki Prefecture, Kyushu Otome Mine, Suisho Pass, Kurobera, Kai Province, Yamanashi Prefecture, Honshu |  | | 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,...sulfide stage which is composedof sphalerite-pyrite-quartz with minor hematite,sphalerite-galena-pyrite,sphalerite-pyrite...stage which is composedof manganocalcite-pyrite-quartz and calcite-quartzsubbands from outside(earlier)...northeastern part of Honshu, the main island of Japan, whereas the vein-typedepositsare distributedthroughoutthe | | | Journal (article/letter/editorial) | | THE Cu3FeS8, A NEW MINERAL HANAWA MINE, AKITA PREFECTURE, JAPAN YOSHIMICHI KAJIWARA* Geological Institute...deposits bearing zone associated mineral in Japan, of the with pyrite is in pyrite and reflection...well a in the the Kuroko- certain barite- mine, closely of us of studied on to thermal...is results probe of that that pleochroism mine, occurs anhydrite) Reflectivity than Hanawa...mineral, in Japanese mine deposits genesis relations in of in the the Japan. Kurokosystem Cu-Fe-S |  | | Journal (article/letter/editorial) | | Fluids for the NeogeneVeinsand KurokoDepositsof Japan KEIKO HATTORI AND HITOSHI SAKAI Abstract The...The $D values of inclusionfluids from quartz and calcite of the Au-Ag vein deposits range from --48 to...waters. The •sO/•60 ratios of the ore fluids of quartz, the filling temperatures of the fluid inclusions...inclusions,and the isotopic fractionation factor between quartz and water show only slight shifts from these values... --50 and about --2, respectively,for the Iwami mine, southwestHonshu. These isotopic results, the salinity |  | | Journal (article/letter/editorial) | | involvingdrilling into a large fluid inclusionin quartz. Another method,basedon analysisof the amountof... With mineralsof low index of refractionsuchas quartz or fluorite, it is possible to view the sampleplate...possibleextraneous 2 For fluorite, kerosene of n= 1.45; for quartz, "HB 40 oil," made by the Monsanto Chemical Co...Sample No. Run Mineral No. 15• -6 Location Quartz phenocrysts in rhyolite (probably secondary inclu-... percent (variation from Lake Michigan water) Quartz crystals from miarolitic Garfield cavities in |  | | Journal (article/letter/editorial) | | Plutonic Rocks From Japan Ken Shibata and Shunso Ishihara Geological Surveyof Japan, Higashi 1-1-3, Yatabe-cho...Yatabe-cho, Tsukuba-gun, Ibaraki, Japan Abstract. Initial STSr/S6Sr rations were determined for more than...than 80 plutonic rocks in Japan, The STSr/ S6Sr ratios of gabbroic and granitic rocks show no significant...are low (< 0.706) in Northeast Japan but high (< 0.706) in Southwest Japan, the boundary being the Tanakura...Tectonic Line. Within Southwest Japan, the ratios are low along the Japan Sea side of the southernmost area |  | | Journal (article/letter/editorial) | | Greenish-blue hexagonal crystals from the Bou-Skour copper mine, Jebel Sarho, Ourzazate, Morocco, have the composition...as an intergrowth with djurleite at the Ani mine, Akita, Japan, in prismatic or platy crystals closely...on a few specimens from the Mammoth-St. Anthony mine, Tiger, Pinal County, Arizona. Named for its discoverer...fine-grained lead-grey aggregates from the North Lily mine, East Tintic district, Utah; orthorhombic. Named...gemstone unique to Minnesota is the crystalline quartz replacement of fibrous goethite locally named binghamite |  | | Journal (article/letter/editorial) | | University] at 05:52 29 January 2015 FRENCH CREEK IRON MINE, CHESTER COUNTY, PENNSYLVANIA M any minerals described...specimens. One such locality is the French Creek iron mine, Chester County, Pennsylvania, an occurrence worthy...of chalcopyrite crystals from the Old Lurzenbach mine, Gosenbach, Siegen, Germany. Jack Halpern specimen...Sterling mine, Jefferson County, and in very large crystals associated with brookite in quartz at Ellenville...chalcopyrite crystals were found in the Gardner Hill mine, Guilford County, North Carolina. Some of the finest |  | | Journal (article/letter/editorial) | | Silver-Lead-Zinc-Mineralized Granitoids in Tsushima, Japan Shunso ISHIHARA and Akira IMAI* Abstract: Miocene...magmatism related to the opening of the Sea of Japan. It is suggested that both basaltic and granitic...and became one of the leading lead-zinc mines in Japan and have been studied in details (Uehara, 1959;...age. The representative examples are Kamioka in Japan, Yeonhwa in the Korean Peninsula, Qingchengzi, Northeast...Taishu mine, located at the Tsushima Islands of the Korean Strait in the westernmost part of Japan, belong |
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