福島県水引鉱山産エリー石 宮脇 律朗 松原 聰 橋本 悦雄 国立科学博物館 Bulletin of the National Science Museum. Series C, Geology & paleontology 0385244X 23 1 27 33 1997-06 Elyite from the Mizuhiki mine, Fukushima Prefecture, is found as fibrous crystal groups in tiny vugs of limonitic ore coposed of supergene galena and chalcopyrite. This is the first occurrence of this mineral in Japan. The averaged chemical analysis by EPMA gave PBO 80.49 CuO 6.71,SO_3 7.70,H_2O (by difference) 5.10wt%, yielding the empirical formula Pb_<3.99>Cu_<0.94> (SO_4)_<1.07> [O_<0.73>(OH)_<6.28>]_<7.01> on the basis of total cations=6 in anhydrous part. The X-ray single crystal study indicated elyite to be monoclinic P2_1/c with a=14.244(1), b=11.536(1), c=14.656(1)A, β=100.45(1)°. 1997-06 110004313591 AA10509611 4260439 ENG NDL NII-ELS 3 <Bull. Natn. Sci. Mus., Tokyo>Elyite from the Mizuhiki Mine, Fukushima Prefecture, Japan Miyawaki Ritsuro Matsubara Satoshi Hashimoto Etsuo National Science Museum Bulletin of the National Science Museum. Series C, Geology & paleontology Elyite from the Mizuhiki mine, Fukushima Prefecture, is found as fibrous crystal groups in tiny vugs of limonitic ore coposed of supergene galena and chalcopyrite. This is the first occurrence of this mineral in Japan. The averaged chemical analysis by EPMA gave PBO 80.49 CuO 6.71,SO_3 7.70,H_2O (by difference) 5.10wt%, yielding the empirical formula Pb_<3.99>Cu_<0.94> (SO_4)_<1.07> [O_<0.73>(OH)_<6.28>]_<7.01> on the basis of total cations=6 in anhydrous part. The X-ray single crystal study indicated elyite to be monoclinic P2_1/c with a=14.244(1), b=11.536(1), c=14.656(1)A, β=100.45(1)°. 宮脇 律朗 Miyawaki Ritsuro Department of Geology, National Science Museum 松原 聰 Matsubara Satoshi Department of Geology, National Science Museum 橋本 悦雄 Hashimoto Etsuo