著者

角田 謙朗 清水 正明

出版者

The Society of Resource Geology

雑誌

資源地質 (ISSN:09182454)

巻号頁・発行日

vol.45, no.250, pp.111-120, 1995-04-28 (Released:2009-06-12)

参考文献数

15

被引用文献数

3

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Metallic mineralization in the Suehiro vein and its neighbouring veins of the Otome deposit was described. The metallic minerals of the Suehiro vein and its neighbouring veins are ferberite, pyrrhotite, less pyrite, chalcopyrite, sphalerite, molybdenite 2H, goethite, arsenopyrite, cubanite, Ag, Sb-bearing cosalite, bismuthinite, native bismuth, ingodite, Bi-bearing boulangerite, izoklakeite etc.The mineralization sequence at Otome can be divided into three stages, based on microscopic observation, EPM analyses and fluid inclusion data: Stage I (W mineralization), Stage II (sulphides and sulphosalts), and Stage III (hematite and goethite). Further, the stage II is subdivided into three substages. The fluid inclusion homogenization temperatures ranged from 350°to 250°C for stage I, from 330° to 150°C for stage II and lower than 150°C for stage III.Temperatures and sulfur activities of stage II mineralization at Otome are estimated as 330° to 150°C, and -11 to -20 in log aS2 (atm.), based on the FeS contents of sphalerite, mineral assemblages and fluid inclusion data.

著者

角田 謙朗 清水 正明

出版者

山梨大学

雑誌

山梨大學教育學部研究報告. 第二分冊, 自然科学系 (ISSN:03858766)

巻号頁・発行日

vol.34, pp.114-120, 1983