Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Fumihiko Matsuyama"'
Autor:
Fumihiko Matsuyama, Teppei Maeda, Kazuo Nishitani, Tomoyasu Oda, Nobuyuki Iwata, Hiroshi Yamamoto
Publikováno v:
Transactions of the Materials Research Society of Japan. 33:131-134
Publikováno v:
Japanese Magazine of Mineralogical and Petrological Sciences. 35:207-211
Garronite occurs as radiating aggregates of minute fibrous crystals in amygdales of altered trachybasalt from Kuniga, Oki Islands, Shimane Prefecture, Japan. The mean chemical composition by EDS analysis leads to the empirical formula, (Na1.15K0.15)
Autor:
Fumihiko Matsuyama, Satoshi Matsubara
Publikováno v:
Japanese Magazine of Mineralogical and Petrological Sciences. 29:129-135
Gobbinsite occurs as fibrous crystal in the amygdales of altered trachybasalt from Kuniga, Dozen, Oki Islands, Shimane Prefecture, Japan. The average chemical composition by EDS analyses leads to the empirical formula, Na4.09Ca0.75K0.23Sr0.07Al5.92Fe
Autor:
Ritsuro Miyawaki, K. Kiyota, Fumihiko Matsuyama, Satoshi Matsubara, Masaaki Shimizu, Akira Kato
Publikováno v:
Mineralogical Magazine. 62:793-799
Tsugaruite, Pb4As2S7, is a new Pb-As sulphosalt from the Yunosawa mine, Aomori Prefecture, northern Japan. X-ray studies indicated it to be orthorhombic Pnn2 or Pnnm, a 15.179(1), b 38.195(1), c 8.0745(1) Å, Z = 16 [Pb4As2S7] with a subcell with c
Publikováno v:
Resource Geology. 48:117-124
Se-bearing benjaminite and matildite are described from the polymetallic zone of the Ikuno deposits, Japan. The former is the first occurrence in Japan, and is from two separate veins, the Nanten and Daimaru, while the locality of the latter could no
Publikováno v:
Mineralogical Journal. 20:1-8
Huangite was found from the type locality of minamiite in sulphuric altered andesite from Okumanza, Gunma Prefecture, Japan. EDS analyses indicate that “alunite” crystals are composed of very minute intergrowth of alunite, natroalunite, minamiite
Publikováno v:
Journal of the Mineralogical Society of Japan. 27:195-202
Gonnardite, phillipsite and gismondine occur as euhedral to subhedral crystals in the cavities of calcareous xeno-lith. Thomsonite and a scolecite-like zeolite often replace nepheline crystals, and rarely fill up minute vesicles in nephelin-ite. The
Autor:
Satoshi Matsubara, Fumihiko Matsuyama
Publikováno v:
Journal of the Mineralogical Society of Japan. 26:181-184
Segnitite was found as crusts in association with philipsbornite on fissure of quartz vein including arsenopyrite from the Tohgane mine, Gifu Prefecture, Japan. The representative EDS analysis of segnitite excluding H2O is; PbO 31.38, Al2O3 5.97, Fe2
Publikováno v:
Mineralogical Journal. 17:338-345
Visibly zoned grains composed of amber yellow rim and grey black core in a lepidolite-bearing pegmatite from Myokenzan, Ibaraki Prefecture, consist of microlite plus uranmicrolite rim and of stibiotantalite core. The second and third are new to Japan
Autor:
Masaru Horii, Kenichi Yamagata, Fumihiko Matsuyama, Shigemi Suzuki, Seishi Hakozaki, Satomi Taniguchi
Publikováno v:
Practica Oto-Rhino-Laryngologica. 75:733-739