 | | Journal (article/letter/editorial) | | OSUMILITE, A NEW SILICATE MINERAL, ITS CRYSTAL STRUCTURE* AND Arrno l\,ftvasurno, Geolog,ical Institute...of Science, Tokyo (Jniaersity, Tokyo, Japan. Ansrnecr Osumilite (K, Na, Ca)(Mg, Fe+2)2(Al,Fe+3, Fe+2)3(Si...with o:light blue and €:colorless. Structurally, osumilite is composed of hexagonal double rings (Si, Al)r:Oao...rock at Sakkabira, Kyusyu, Japan, and is named after the province Osumi. Probably osumilite is a relatively...rock in Sakkabira, Hayasaki, Tarumizumati, Kimotuki-gun, Kagosima Prefecture, Kyusyu (Kyushu), Japan, and |  | | Report (issue) | | (K; Na)(Fe2+ ; Mg)2(Al; Fe3+ )3 (Si; Al)12 O30 Osumilite ° c 2001 Mineral Data Publishing, ver sion 1...= 14.26{14.35 Z=2 X-ray Powder Pattern: Sakkabira, Japan; nearly identical to merrihueite. 3.24 (vs)...1.59 Total 99.63 99.55 Chemistry: (1) Sakkabira, Japan; by electron microprobe, corresponds to (K0:76...this species include: in Japan, from Sakkabira and Hayato, Kagoshima Prefecture, and from the Asama volcano...volcano, northwest of Tokyo, Yamanashi Prefecture. In the USA, at Obsidian Cli®s, Lane Co., Oregon. In |  | | Journal (article/letter/editorial) | | 196S REFINEMENT OF THE CRYSTAL STRUCTURE OF OSUMILITE G. E. BnowNANDG. V. Grens, DepartmentorGeotoilcat...'''chniclnstitute' ABSTRACT The crystal structure of osumilite, @:10.155(1), c:14.284(4) A; P6/nrc,2[(Caooos...physical simiiarities with cordierite and beryl, osumilite is classified with the framework rather than with...classification of the mineral. INrnooucrroN Osumilite (Na,K, Ca)xrr(Fe2+,Mg,Mn;vf lSi,Al,net*)lYOro'HzO...in the literature is osumilite. Despite these similarities, however, osumilite is readily distinguished |  | | Journal (article/letter/editorial) | | Finding of osumilite and andalusite ash layer in Niigata KATSUKI KUROKAWA*, Prefecture, HIROMI *...KONISHI** Earth and , Faculty School of Central Japan YOSHIMI FUJIWARA*** Science University, ** Graduate...and Niigata Japan Technology , Niigata Niigata *** Meike 950-21, Primary Osumilite marine have...ash Prefecture, Niigata 2-6cm thick. School combined Osumilite are data for at osumilite and...and of osumilite and andalusite has not been reported from the volcanic date. Osumilite first reported |  | | Journal (article/letter/editorial) | | . . . . . . . . Description of the Synthetic Osumilite End Member . . . . . . . . . . . . . . . . Stability.... Bearing of Experimental Results on Natural Osumilite Occurrences . . . . . . . . . Zusammenfassung...357 Abstract. A synthetic end member of the osumilite group with a composition KMgzAla[Si~0A12- Oa0]...the range 650 to 700~ and at higher pressures osumilite could not be synthesized as a single phase, even...cordierite-~K-feldsparA-quartz. Natural osumilite of Sakkabira, Japan, treated under similar conditions also |  | | Journal (article/letter/editorial) | | (metastable) osumilite obsen'ed in laboratory experiments' The rare mineral osumilite was anall.zed...microprobe anall'sis of pure osumilite from the type locality, Sakkabira, Japan, with microprobe analysesof...1. Osumlrrr Awelysrs Sakkabira, Sakkabira, Sakkabira, Japan Japan Japan Method: wet chemical... 1). rn the structural formulae of all three osumilite samplesthe numbers of K and ca atoms in this position...percent occupied.Nevertheless,pure potassium osumilite has been sl,nthesized (schreyer and Seifert, 1967) |  | | Journal (article/letter/editorial) | | YAGIITE, A NEW SODIUM-MAGNESIUM ANALOGUE OF OSUMILITE Center, TnnooonoE. BuNcn,AmesResearch 1r,4S,4...Argonne, Illinois 60139. Assrnacr Yagiite, a new osumilite-type sodium-magnesium-aiuminum silicate is {ound...data show that yagiite is isostructural with osumilite; unit cell dimensions are a : 1 0 . 0 9 + 0 ....2.70 g/cm3. INrnonucrroN 'ya-gc-ite), a new osumilite-typemineralwith the Yagiitel, (pronounced structural...that yagiite is very similar to osumilite, and to two other osumilite-type meteorite minerals, roedderite |  | | Journal (article/letter/editorial) | | California 91125 Abstract osumilitesfrom sakkabira,Japan,obsidian cliffs, oregon, and Nain, Labradorhavebeen...arisesfrom the channelcontents. Introduction Osumilite,K(Mg,Fe,Mn)r(Al,Fe3+ )r(Si,Al)rrOro,is found in...(Goldman et al., 1977)are applied to the study of osumilite,becauseof the structuraland spectroscopic sim...Theseinterpretationsprovidethe basisfor the study of osumilite. This paperreportsthe findingsof a combinedelectronic...infraredspectrahavebeentakento examine the water contentin osumilite,and to seeif spectral differencesexist between | | | Journal (article/letter/editorial) | | 山長 七 郎 山溶 岩 中 の 大 隅 石 につ い て On the Akagi Osumilite Volcano, 古 賀 in Chyoshichiro-yama Gunma 修 一...カ ビ ラ)の Koga) しが き 大 隅 石(Osumilite)はMiyashiroに 平(サ Lava, Prefecture よ り始 め て 鹿 児 島 県 大 隅 半 島 咲... 古賀 14 第1表 大 隅 石 の 化 学 組 成 と原 子 比 麓,5,Sakkabira, Kagoshima, 分 県 玖 珠 郡 玖 珠 町 黒 岳 山 麓,万 島 県 入 来 町,流 (Chinner...(0=30) 紋 岩 の 石 基 中 の も の(官 Dixon, 1973) 1〜4. Japan (Olsen 年 山 溶 岩 中(横 赤 城 火 山 産,長 七郎山東 and Bunch...につ い て 文 1) 青 木 謙 一 郎:大 2) 荒 牧 重 雄:カ 隅石 (Osumilite) 献 の 新 産 出,岩 鉱,38,80(1954) ル デ ラ 学 説 に 関 す |  | | Journal (article/letter/editorial) | | American Mineralogist, Volume 61, pages 29-37, 1976 Osumilite of deep-seated origin in the contact aureoleof...experimental and natural evidencehas indicated that osumilite is formed only at very low pressuresand probably... the osumilite formed at Pao'"1- 5 kbar and I: 700'-900'C, but Psp ( We conclude that osumilite is stable...of which a low pressure origin is certain: Sakkabira, Japan (Miyashiro, 1956); Monte Arci, Sardinia (Rossi...(Schreyerand Seifert, 1967)which indicated that osumilite of composition KMgrAlssir0Al2o3ocould not lDeceased |  | | Journal (article/letter/editorial) | | NEW OCCURRENCEOF ROEDDERITE AND ITS BEARING ON OSUMILITE-TYPEMINERALS Eoweno Or.srN, Fi.eld,Museum of Naturol...variation which bears directly on the problem of osumilite-type phases, and indirectly on cordierite (Miyashiro...diffraction patterns of the new roedderite, osumilite from Japan (both measured by the writer), the Indarch...difficult to teII the Wichita County roedderite from osumilite in spite of the large differencesin composition...1.852 * 31 additional spacingsto 0.7969 Osumilite, Sakkabira, r d(L) 30 70 8.827 7. 1 2 6 60 70 |  | | Journal (article/letter/editorial) | | .M . flle. Mrcrrlnr- Fr,nrscnBn Osumilite Arnro MrvrsarRo, Osumilite, a new mineral, and cordierite in...(rhyodacite) in Sakkabira, Tarumizu-mati, Kagosima Prefecture, southern Kyrisyrl, Japan. It was originally |  | | Journal (article/letter/editorial) | | Springer-Verlag 1981 The Restricted Stability of Osumilite Under Hydrous Conditions in the System K 2 0 -...Reversed stability experiments for the synthetic osumilite KMg2(A12.TsMg0.25)(All.vsSi10.25)O30 determined...800 ~ C). At the lower thermal stability limit osumilite + H 2 0 vapor break down to cordierite + K fe...respectively. The dependence of osumilite stability on water fugacity makes osumilite a sensitive indicator mineral...about 0.8 Kbar. Introduction The rare mineral osumilite (K,Na)(Mg,Fe,Mn)z(A1,Mg,Fe3+)3 (Si,A1)lzO3o, has |  | | Journal (article/letter/editorial) | | Al)O4tetrahedra (Tl), is mainly occupiedby K. When osumilite contains octahedralAl, a high concentration of...site to be optically negarive. INrnonuc:rroN Osumilite (Miyashiro, 1956),with the crystal-chemical formula'...are assumedto be vacant in osumilites. Although osumilite was considered a rare mineral 10 years ago, today...formations. The stability of synthetic K-Mg-bearing osumilite has been experimentally establishedto lie betweenca...suggestsa very low/rro. Although a largenumber of osumilite occurrenceshave been reported and the chemical |  | | Journal (article/letter/editorial) | | Petrology 9 by Springer-Verlag 1977 The Stability of Osumilite in High Grade Metamorphic Rocks B.J. Hensen School...Box 1, Kensington 2033, Australia Abstract. Osumilite, approximate composition K(Mg,Fe)2 A15SiloO3o...conditions of low water and oxygen fugacity. Osumilite coexists, apparently stably, with hypersthene...assemblage of one of the natural occurrences. Osumilite is in a divariant reaction relationship with cordierite...the joins osumilite-garnet and osumilite-sillimanite are not stable. It is suggested osumilite is involved |  | Chukanov, N. V., Pekov, I. V., Rastsvetaeva, R. K., Aksenov, S. M., Belakovskiy, D. I., Van, K. V., Schüller, W., Ternes, B. (2013) Osumilite-(Mg): Validation as a mineral species and new data. Geology of Ore Deposits, 55 (7) 587-593 doi:10.1134/s1075701513070064 | Journal (article/letter/editorial) | | Mineralogicheskogo Obshchestva, 2012, No. 4, pp. 27–35. Osumilite(Mg): Validation as a Mineral Species and New...February15, 2012 Abstract—Osumilite(Mg), the Mgdominant analogue of osumilite, has been approved by the...pseudobrookite and hematite are associated minerals. Osumilite(Mg) occurs as short prismatic or thick tabular...to H2O and OHgroups are in the IR spectrum. Osumilite(Mg) is uniaxial (+), ω = 1.539(2), ε = 1.547(2)...was refined on a single crystal, R = 0.0294. Osumilite(Mg) is hexagonal, space group P6/mcc; a = 10 |  | Balassone, Giuseppina, Mormone, Angela, Rossi, Manuela, Bernardi, Alessandro, Fisch, Martin, Armbruster, Thomas, Malsy, Anna, Kathrin Berger, Alfons (2008) Crystal chemical and structural characterization of an Mg-rich osumilite from Vesuvius volcano (Italy) European Journal of Mineralogy, 20 (5) 713-720 doi:10.1127/0935-1221/2008/0020-1839 | Journal (article/letter/editorial) | | and structural characterization of an Mg-rich osumilite from Vesuvius volcano (Italy) Giuseppina BALASSONE1...3012 Bern, Switzerland Abstract: At Vesuvius, osumilite, (K, Na)(Fe, Mg)2 (Al, Fe, Mg)3 (Si, Al)12 O30...the 19th century. Chemical analysis shows that osumilite is homogeneous and characterized by high Mg numbers...consistent with space group P6/mcc. Key-words: osumilite, Vesuvius, double-ring silicates, crystal chemistry...chemistry, crystal structure. Introduction Osumilite is an anhydrous double-ring silicate belonging to |  | | Journal (article/letter/editorial) | | VOL' 47, JANUARY.FEBRUARY' 1962 METASTABLE OSUMILITE. AND PETALITE-TYPE PHASES IN THE SYSTEM MgO-AlzOa-SiOr...MgO-A1:OrSiOz' one has a structure similar to that of osumilite and other related phases such as the synthet-...constant pressure and tempefature. 90 METASTABLE OSUMILITE- AND PETALITE-TVPE PHASES 9I As early as 1918...akin to the recently discovered natural mineral osumilite (Miyashiro, 1956); the second phase shows similarities...:n"t" fnn OsuururE-TYPE Pnasp A phase with an osumilite-type structure was obtained by crystallizing glass |  | | Journal (article/letter/editorial) | | 1989 Mineralogy and petrology of an unusual osumilite * vanadium-richpseudobrookite assemblagein an...61, rue Bufon, 75005 Paris, France AssrRAcr Osumilite occurs as rare, transparent,flattened, hexagonallight-blue...inferred as the conditions of formation of the osumilite + pseudobrookiteassemblage.The crystallization...crystallization of the ejectum. INrnorucrrol,l Osumilite, a hexagonalmineral structurally related to milarite...ultramafic cumulates(Lorand and Cottin, 1987). Osumilite and pseudobrookitehave been found to coexist in |  | | Journal (article/letter/editorial) | | S.S.K. Babu ? D.J. Waters Phase relations of osumilite and dehydration melting in pelitic rocks: a simple...1996 Abstract Thermodynamic modelling of (1) osumilite solid solutions and (2) dehydration melting in...the calculated partition of Fe and Mg between osumilite, garnet, cordierite, orthopyroxene and biotite...conditions which accompanied metamorphism of natural osumilite occurrences in Nain, Namaqualand, and Rogaland...temperature and bulk composition. Introduction Osumilite with a chemical formula (K, Na) (Mg, Fe21)2 (Al |  | | Journal (article/letter/editorial) | | metamorphic Geol., 1995, 13, 613-625 The stability of osumilite in metapelitic granulites D. P. C A R R I N G...from KFMASH-system experiments demonstrate that osumilite is stable in relatively magnesian bulk rock compositions...reported from well-documented natural examples of osumilite-bearing rocks are reproduced by the experiments...conditions can be reliably inferred from distinctive osumilite-bearing assemblages identified in the phase diagrams...East Antarctica: the high-P stability limit for osumilite in the Napier Complex is 9-10kbar, the prograde |  | | Journal (article/letter/editorial) | | Experimental study of phase relations involving osumilite in the system K,O-Fe0-Mg0-AI2O3-SiO2-H2O at high...(Spr), water-undersaturated cordierite (Crd), osumilite (Osu), sillimanite (Sil), K-feldspar (Kfs), quartz...presence of quartz, orthopyroxene and liquid. Osumilite has been found in various mineral assemblages...to the right with increasing pressure. Because osumilite is the most magnesian phase it is restricted to...Over the entire temperature range investigated osumilite is not stable beyond 12 kbar. The data imply a |  | | Journal (article/letter/editorial) | | 72, 123-143 (1980) 9 by Springer-Verlag 1980 Osumilite-Sapphirine-Quartz Granulites From Enderby Land...hypersthene-sillimanite-quartz and osumilite on a regional extent. Osumilite is present in a variety of mineral...theoretical analysis of the phase relations involving osumilite in the chemical systems KzOM g O - A120 3 - SiO...Mg-system the lower temperature stability limit of Mg-osumilite is inferred to be defined with increasing pressure...iron-bearing systems an important reaction involving osumilite is Os + Gt-~ Cd § Hy § Kfeld + Qtz. * Published |  | | Journal (article/letter/editorial) | | 1650 Sphalerite Heated, slip structure,twinning, Japan, Hozawa mine (Akizuki, Mizuhiko.) 7-8 t302 Sphene...Sphalerite,Japan,Hozawamine (Akizuki, Mizuhiko.) 7-8 1302 Electron microscopy Data Sphalerite, Japan, Hozawa...pradesh, Krishna, Kondapalli, Nakkal Banda Osumilite, Sakkabira (Olsen, Edward, et a/.) 5-6 875 Sphalerite...Italy Mineralogy Osumilite, Sardinia, Monte Arci (Olsen, Edward, er a/.) 5-6 875 Japan Mineralogy Artinite...Caledonia, Bouehndep (Black, Philippa M.) 3-4 512 Osumilite Japan, Italy, Oregon 5-6 875 (Olsen, Edward, et a/ | | | Journal (article/letter/editorial) | | pegmatites from Sasagoand Dosi, Province of Kai, Japan : Jap. Jour . Geol. Geogr. 13, 205-227. 研 究 ...岩(eclogite)に し か な りの 苦礬柘 1. M )rirnotu, R., Sakkabira,Tolvn Japan: Earthq. 2) 最近 都 城秋 穗1記 れ て い る 。 父 鉄礬...青 石"が 実 は菫青 石 で は な く,こ れ に類似 した 新鉱 物 で 大隅 石Osumilite"な る 新 名 称 を提 唱 し て い ち が 発 表さ れ た 後都 城 氏は 私...cordierite from Tarumizu, Kimotsuki Province, Kagoshima Prefecture, Res. Inst.Bull., 25, 33 35. あ る こ と を |
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Sakkabira, Kagoshima Prefecture, Japan