 | IMAI, Akira, MATSUEDA, Hiroharu, YAMADA, Ryoichi, MASUTA, Kenzo (1999) Polymetallic Mineralization at the Shin-Ohtoyo Deposit, Harukayama District, Hokkaido, Japan. Resource Geology, 49 (2) 75-88 doi:10.1111/j.1751-3928.1999.tb00033.x | Journal (article/letter/editorial) | | Mineralization at the Shin-Ohtoyo Deposit, Harukayama District, Hokkaido, Japan Akira IMAI*, Hiroharu...Abstract: The Shin-Ohtoyo Cu-Au deposit is located in the Harukayama district, 20 km west of Sapporo, Hokkaido...Hokkaido, Japan. Both acid-type disseminated and adularia-quartz-type vein Au mineralizations have been recognized...characteristics of sulfide ores from the Shin-Ohtoyo deposit have been proved to be polymetallic. Ore...quartz veinlets in silicified zone around the deposit, (2) bismuthinite, emplectite, ±friedrichite and |  | | Journal (article/letter/editorial) | | the Hydrothermal System of Southwestern Hokkaido, Japan Euis T. YUNINGSIH1,2 and Hiroharu MATSUEDA2 1...University Museum, Hokkaido University, Sapporo, Japan Abstract Shin-Otoyo, Suttsu, Teine, Date, Chitose...deposits, and located in southwestern Hokkaido, Japan. The deposits are predominantly hosted by the Green...Koryu deposits are slightly different from those of Shin-Otoyo, Suttsu, Teine, and Date due to their lack...sub-province of Yajima (1979) except for the Suttsu deposit, which is located in the western part (Fig. 1) |  | | Journal (article/letter/editorial) | | 2000 Sulfur Isotopic Study of the Toyoha Deposit, Hokkaido, Japan −Comparison between the Earlier-Stage...Toyoha deposit, Hokkaido, one of the largest Pb-Zn-Ag polymetallic vein-type deposits in Japan, were studied...studied sulfide minerals collected from the Toyoha deposit range from +5 to +9‰, with an average of approximately...of Sapporo City, Hokkaido (Fig. 1). It is one of the largest lead-zinc-silver producers in Japan. It...productive of the indium ores (Ohta, 1989). The Toyoha deposit is composed of numerous veins. The veins are structurally |  | | Journal (article/letter/editorial) | | Late Cenozoic Metallogeny of Southwest Hokkaido, Japan Yasushi WATANABE Mineral Resource Research Group...Tsukuba Central 7, Higashi 1-1-1, Tsukuba 305-8567, Japan [y-watanabe@aist.go.jp] Received on May 29, 2001;...stress field of southwest Hokkaido, Japan, and compiles deposit form, type, ore and alteration minerals...activity. The late Cenozoic tectonic regime of the Sapporo-Iwanai ore district is divided into five periods...define clearly. Southwest Hokkaido in the Northeast Japan arc (Fig. 1) is one of the best places to test the |  | | Journal (article/letter/editorial) | | the Morococha district, central Peru, displays a deposit-scale base metal zonation, a common feature observed...variation from low- to high-sulfidation states on deposit and orebody scales (e.g., Meyer et al. 1968, Einaudi...on the composition of tennantitetetrahedrite, enargite, sphalerite, and various Cu-Snbearing sulfides...Petersen 1965). Important amounts of high-grade enargite ore were extracted from the core area near the...pyrite in the lowest mine levels. Laterally, the enargite of the core area rapidly gives way to tennantite |  | | Journal (article/letter/editorial) | | WATERLOO VOLCANIC-ROCK-HOSTED MASSIVE SULFIDE DEPOSIT, AUSTRALIA: CRYSTAL CHEMISTRY AND FORMATION OF...Waterloo volcanic-rock-hosted massive sulfide (VHMS) deposit, northern Queensland, Australia, host germanium-bearing...volcanic-rock-hosted massive sulfide deposits, Waterloo VHMS deposit, Queensland, Australia. SOMMAIRE Dans le gisement...Waterloo volcanic-rock-hosted massive sulfide deposit, northern Queensland, Australia. On the basis of...Initially, colusite was recognized at the Butte deposit in Montana (Sales 1914, Landon & Mogilnor 1933 |  | | Journal (article/letter/editorial) | | Lepanto epithermal copper-gold deposit and the Victoria gold deposit, Mankayan Mineral District, Northern...ore minerals of the Lepanto copper-gold deposit are enargite and luzonite, with significant presence...The ore mineralogy of the Lepanto copper-gold deposit suggests high fS2 in the early stages of mineralization...mineralization corresponding to the deposition of the enargite-luzonite-pyrite assemblage. Subsequent decrease...The principal ore minerals of the Victoria gold deposit are sphalerite, galena, chalcopyrite, tetrahedrite |
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