 | | Journal (article/letter/editorial) | | Siliceous Black Ore from the Ezuri Kuroko Deposit, Hokuroku District, Japan Kosei KOMURO, Naoaki AOKI*...Tsukuba, 1-1-1 Ten’nodai, Tsukuba, Ibaraki 305-8571, Japan [e-mail: komuro@arsia.geo.tsukuba.ac.jp] * Deceased...the siliceous black ore in the Ezuri Kuroko deposit, Hokuroku, Japan. By treating samples with conventional...benthic foraminifera, siliceous ore, black ore, Ezuri, Hokuroku, Kuroko (Guber and Ohmoto, 1978; Kitazato...ferruginous chert (“Tetsusekiei”) of the Kuroko deposit in the Kosaka mine (Ishikawa, 1964), similar fossil records |  | | Journal (article/letter/editorial) | | Siliceous Black Ore from the Ezuri Kuroko Deposit, Hokuroku District, Japan Kosei KOMURO and Yoshimichi...of Tsukuba, 1-1-1 Ten'nodai, Tsukuba 305-8571, Japan [e-mail: komuro@arsia.geo.tsukuba.ac.jp] Received...Abstract: Germanium-bearing colusite occurs with sphalerite, galena, tetrahedrite-tennantite, chalcopyrite...siliceous black ore from the Ezuri Kuroko deposit in the Hokuroku district of Japan. X-ray microdiffractometry...Ge-bearing colusite in close association with sphalerite, and (Cu24.6Fe0.9)Σ25.4V1.8(As4.1Sb0.2)Σ4.3Ge1 |  | | Journal (article/letter/editorial) | | Occurrence of Brown Ores in Kuroko-type Deposits in Japan Akira IMAI, Osamu ISHIZUKA*, Ryoichi YAMADA** and...so-called brown ore from the Kuroko-type deposits in Japan was examined. Brown ore specimens from the Kannondo...addition, occurrences from the Fukazawa, Matsumine, Ezuri, Shakanai, and Ginzan deposits were previously reported...occurs commonly in the Kuroko-type deposits in Japan, whereas its extent is limited. The brown ore is...the Kuroko-type deposits of the Fukazawa mine, northeast Japan (Tanimura et al., 1972; Tanimura, 1974; |  | | Journal (article/letter/editorial) | | Ore” from the Fukasawa Kuroko Deposits, Northeast Japan: Its Characteristics and Formation Process Osamu...Fukasawa kuroko-type deposits, northern Honshu, Japan. As this type of ores also occur in the marginal...uppermost part of several other kuroko deposits in Japan, the formation of brown ore appears to be repeated...(less than -10 ‰) and filamentous texture of sphalerite, seeming remnant of bacteria, indicate the presence...deposits (>1000 g/t Ag) (Narita et al., 1977), Ezuri deposits (1000 to 1500 g/t Ag)(Sato and Sasaki, |  | Barrie, C. D., Boyce, A. J., Boyle, A. P., Williams, P. J., Blake, K., Ogawara, T., Akai, J., Prior, D. J. (2009) Growth controls in colloform pyrite. American Mineralogist, 94 (4) 415-429 doi:10.2138/am.2009.3053 | Journal (article/letter/editorial) | | University, Ikarashi-2 8050, Niigata 950-2181, Japan 1 2 aBstraCt Primary colloform textures preserved...two ore deposits, Greens Creek in Alaska and Ezuri in Japan, have been systematically analyzed for grain...bacteriogenic δ34S between –40 and –32‰, whereas the Ezuri colloform has a positive δ34S of ~+5‰, typical of...detailed analyses reveal that in both Greens Creek and Ezuri, there is no systematic correlation between sulfur...Creek deposit in Alaska and the Ezuri deposit in Japan. geologiC setting The Greens Creek deposit The |  | | Book | | 447 467 491 Company Index 503 Tables: World Mine Production of Gold, Silver and Base Metals 5A2...Mining OFFICES: 5011 Meadowood Way Paradise Peak Mine Suite 300 (100% FMC Gold) * Sales Reno, Nevada...Elko, Nevada (303) 292-7500 Royal Mountain King Mine (100% FMC Gold) Copperopolis, California Beartrack...because Escondida, the world's third-largest copper mine, high in the mountains of Chile's Atacama desert...underground and opencast mining, oil and gas mining ® mine construction, development, modernization ® complete |
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