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| accelerated? I Present acldress: Geological survel. of Japan, Hisamoto cho 13.5, Karvasaki-shi, .lapan. 1110...4 The writer reported his observationson one hematite crystal on which the final history of growth can...questions. The writer has made observationson hematite crystalsfrom the Iollowing localities:Ayumikotan...Okayama Pref.; and Saganoshima'Nagasaki Pref., in Japan; Vesuvius and Stromboli in Italy; the Azores Islands...AscensionIsland, and British west Indies. All hematite observed comes from volcanic lava, and is certainly |
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| OF HEMATITE CRYSTALS Icnrno SuNacew.r,Geological Suraeyof Japan, Hisamato-cho 135,Kauasaki,Japan. ABSTRACT...ABSTRACT Surface structures on the basal plane of hematite crystals from many localities have been observed...surface structures of the basal plane of natural hematite crystals from different localities with a very...Photomicrograph showing natural etching on the basal face of hematite from the Azores Islands. X10. 1334 ICEIRO SUNAGAWA...Photomicrograph showing pronounced naturar etching of hematite. There ts no center, and the edges of layers are |
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| ETCHING OF HEMATITE* ICHIRO SUNAGAWA Geochemical ResearchSection,GeologicalSurveyof Japan ABSTRACT The...The surface structures of hematite crystals from nine localities are ob served with an ordinary reflecting...Meeting 4, 1960. of the Mineralogical Society of Japan 60 Mechanism of Crystal Growth faces. Since...mainly by introducing the result of studies on hematite crystals by the present writer. Methods of observation...very small step heights, but the crystal faces of hematite have reflectivities high . enough to observe ultra |
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| N o . 256 Movement of screw dislocations in hematite. (With Plates I and II.) By A. F. SEAGER, B.Sc...structure of the basal pinacoid of crystals of hematite has been studied by phase contrast microscopy...c h 1 Now returned to the Geological Survey of Japan. 2 A. J. Forty and F. C. Frank, Proc. Roy. Soc....example of the movement of screw dislocations in hematite after the cessation of growth. A study of several...hundred crystals of hematite have been examined from the following localities: Ayumikotan, Gihofuji, Sasazawa |
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| NOVEMBER_DECEMBER, 1961 STEP HEIGHT OF SPIRALS ON NATURAL HEMATITE CRYSTALS RoyalHollouay College Icnrno SuNaG.twe...Lond'on),EngleJield. Assrn,acr The basal faces of hematite crystals from many localities have been observed...cell. The most common spiral patterns found on hematite are deformed spirals revealing high step heights...Survey of Japan, Hisamoto-cho 135, Kawasaki-shi, Japan' lzt6 STEP IIEIGHT OF SPIRALSON HEMATITE CRYSTALS...6 A , 7 A , t O A , z 0 A , etc.t Since c6 for hematite is 13.73 A, and as the unit cell consistsof six |
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| Birthday. JOURNALOF THE MINERALOGICAL SOCIETYOF JAPAN. VOL.3, No.6. SEPT.1958. Bementite and Pyroxmangite...City, deposit Kumamoto of the Ichinomata Prefecture. Associated hornstone-quartz. masses monomineralic...Bementite the collected about the Ichinomata Prefecture. Fumitoshi mine, from photographs, minerals...Nobuya and Tsuneo in Oita Prefecture to Clay Mineral from Oita Prefecture.(pp. Kameki and concerning...Composition from Fukushima of Odaka and Uzumine, Prefecture. (pp. 478-485) Keiichi Omori Mg-vermiculite |
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| Surrey, England. Agsrnacr On one crystal of hematite from Japan, the whole final history of growth, from...microsurfaceslructures of the basal plane of a hematite crystal from Japan from which a good deal of the end-growth...Geological Survey of Japan, Kawasaki-shi, Japan. 566 GROWTHHISTORVOF HEMATITE .567 OesBnvarroN oF...FecB The hematite crystal under study is of hexagonal habit, found at the Saganoshima,Japan. It occurs...two successive o*yg"n layers in the structure of hematite, and fi of the unit cell height), the sensitivity |
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| Icnrno Suxacewl, GeologicalSurveyof Japan, Hisamoto_cho135, Kawasohi, Japan. Ansrnecr INtnonucuorg since verma...schematicallyshown. As the writer discussedin his paperson hematite (SunagawaI960a,b, c, 1963) and on SiC (Sunagawa1963)...Crl,stal grorn'th of hematite from Ayumikotan, Japan. Jour. M'ineral. Soc. Japan,3, 543-556 (in Japanese)...--(1960a) Surface structure of the twin boundary of hematite crystals. Inst. "Lucas --- Mallad.a," Curs,illosy...Conferencias,7,47 57. (1960b) Growth and etch features of hematite crystals from the Azores Islands, Portugal. Sert |
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| Growth of Hematite 砂 川一 from 郎(lchiro 1.序 1949年Burton, tionの tion Cabrera及 Ayumikotan, Sunagawa)... 呼 ば れ る も の で,従 み 立 て ら れ て い る の に 対 し て,不 Japan disloca‑ 。 こ の 理 論 はscrew disloca‑ 来 の成 長 理...して い る(Photo.7)。 つ 現 在 の 観 察 のorderで *Vermaはhematiteで growtb は じ ま り が 全 く認 め ら れ な い 。 ば しば 数 乃 |
