 | | Report (issue) | | Polymorphism & Series: Dimorphous with cordierite. Occurrence: Formed by fusion and recrystallization...underlying coal seams (Bokaro coal¯eld, India); in cordierite veins in a polymetamorphosed pelitic rock (Unazuki...labradorite, corundum, glass (Bokaro coal¯eld, India); cordierite, andalusite, sillimanite, biotite, quartz (Unazuki...north of Mayen, Eifel district, Germany. Name: For the country of ¯rst occurrence, India. Type Material:...on a new mineral, indialite, polymorphic with cordierite. Proc. Japan Acad., 30, 746{751. (2) (1955) Amer |  | | Journal (article/letter/editorial) | | JUNE 1973, VOL. 3 9 , P P . 241-3 Low-iron cordierite in phlogopite schist from White Well, Western... Perth, Western Australia SUMMARY. Pale-blue cordierite (complete analysis given; shows total iron oxides...sillimanite, accessory zircon and rutile. The cordierite is in translucent masses to 8 • 8 • 4 c m with...Laboratories an unusually fresh specimen of pale-blue cordierite for identification. The specimen locality was...analysis of purified material (Payne, I97O) showed a lower iron oxide content, o-86 %, than any analysis tabulated |  | | Journal (article/letter/editorial) | | Petrology 9 Springer-Verlag 1982 Very High C O 2 Cordierite from Norwegian Lapland: Mineralogy, Petrology...Republic of Germany Abstract. The most CO2-rich cordierite thus far encountered in nature with about 2.2...Lapland granulite area described by Eskola. The cordierite is optically positive with the highest optic...the optical properties of the degassed Lapland cordierite and on literature data a ternary diagram is given...given, which shows the variations of this cordierite in 2 Vx and birefringence as a function of channel-filling |  | Schreyer, W., Gordillo, C. E., Werding, G. (1979) A new sodian-beryllian cordierite from Soto, Argentina, and the relationship between distortion index, Be content, and state of hydration. Contributions to Mineralogy and Petrology, 70 (4) 421-428 doi:10.1007/bf00371048 | Journal (article/letter/editorial) | | Springer-Verlag 1979 A New Sodian-Beryllian Cordierite From Soto, Argentina, and the Relationship Between...granite massif one of the large porphyroblasts of cordierite was found to contain relatively high amounts...H20 molecules within the structural channels of cordierite to oxygens of the framework, although the Type...70 wt.% and assumed solid solubility between cordierite and the structurally similar mineral beryl, A12[Be3Si6018]...Cern~ and Povondra (1966) analyzed a beryllian cordierite containing unusually high amounts of both beryllium |  | | Journal (article/letter/editorial) | | relative to well A1,Si-ordered orthorhombic low-cordierite. Based on microprobe analyses, the predominant...value 4:5 in ideal cordierite M2[A14SisO18]. The most highly substituted cordierite from Blaue Kuppe is...Although the substitution KA1 for Si in Mg-cordierite is known to lower the maximum A-value to be attained,...modulations as postulated recently for hexagonal cordierite shortly after its growth. Introduction In the...the international literature, the mineral cordierite is usually considered to be a pure (Mg,Fe)Al-silicate |  | | Journal (article/letter/editorial) | | Significance of Channel and Fluid-Inclusion CO 2 in Cordierite: Evidence from Carbon Isotopes by M. SANTOSH*...undertaken on pure mineral separates from six cordierite-bearing assemblages from Kerala, South India...fluid inclusions and channel-trapped volatiles in cordierite. Field relations, phase-equilibria systematics...systematics, and fluidinclusion studies suggest that cordierite megacrysts associated with orthopyroxene within...e formation in rocks of lower Mg/Fe ratios. In contrast, smaller cordierite grains associated with sillimanite |  | | Journal (article/letter/editorial) | | metasomatizing fluids towards more acidic conditions at lower temperatures. In summary, the selective mobilization...morphology is also reported (grey lines). (C) Cordierite‐biotite (Crd‐Bt) vs. phlogopite‐ roof morphology...morphology is also reported (grey lines). (C) Cordierite-biotite (Crd-Bt) vs. phlogopite-titanite titanite...two important granite typologies, a pristine cordierite-biotite granite, possible to distinguish between...two important granite typologies, a pristine cordierite‐ biotite by phlogopite, Ti-rich minerals, and |  | | Report (issue) | | Polymorphism & Series: Forms a series with cordierite. Occurrence: In the albite zone of pegmatites in granulites...Miskovsky (1975) Sekaninaite, a new mineral of the cordierite series, from Dolni Bory, Czechoslovakia. Scr |  | | Journal (volume) | | complex consists mainly of garnet gneis ses, garnet-cordierite gneis ses, and hypersthene-plagiodase rocks....stage. On the other hand, the anatectic garnet-cordierite gneisses in the northeastern part of the granulite...gneisses are characterized by the widespread occurrence of garnet, hornblende and clinopyroxene. Adjacent...anatexites often characterized by the occurrence of cordierite. Contrary to the granulitic gneisses of...the platy quartz textures vanish. The garnet-cordierite gneis ses contain as accessories zircon, monazite |  | | Journal (article/letter/editorial) | | metamorphic laminae of sillimanite, corundum and cordierite. All this sequence is coexistent with deformed...and discordant pegmatoid or aplitic dykes. The occurrence of the vein-like pegmatoid is extremely variable...the rock-forming minerals in the SMC. Neither cordierite nor kyanite was observed in this area of the... On average, XMg in biotite from metatexite is lower than diatexite, but TiO2 contents are higher (up...significantly higher edenite component and by relatively lower XMg. As their relationships with the migmatitic |  | | Book (edition) | | have been deleted. In Chapter 7 the properties, occurrence, and uses of about described. Of the more ...noncrystalline like minerals in chemistry and occurrence. These mineral-like substances, called mineraloids...processes means that a mineral must be of natural occurrence; human beings cannot have taken part in its formation...characteristic form in this class the pyritohedron. The lower symmetry in this class can be observed in is the...half-form of the tetrahexahedron and thus has a lower symmetry, is frequently found in combination with |  | | Report (issue) | | barite occurrence Pakenham quarry Cedar Hill soapstone occurrence Galetta celestine occurrence Kingdon...Kingdon (Fitzroy, Galetta) mine Stanton lead occurrence Bell’s mine Calabogie area Bluff Point mine Calabogie...Renfrew–McArthurs Mills area Hunt mine Dacre iron occurrence Keyfortmore mine Radnor mine Sunset mine Spain...Kuehl Lake occurrence Quadeville East mine Quadeville West mine Gutz corundum occurrence Michaelis corundum...corundum occurrence Edgemont mine Jewellville corundum occurrence Craigmont (Craig) mine Burgess mine |  | | Journal (issue) | | slightest, the specimen is actually repaired; the small lower crystal and matrix are glued to the large crystal...graphic intergrowth; the texture be came coarser lower in the layer near the core zone, and it is the more...showing the same forms is attached at one side to the lower part of the large crystal but is not represented...with “cinnamon-pink” tourmaline is the poorest. Lower quality apatite is characterized by opacity and...these analyses are presented as Table II. One occurrence of fluorapatite deserves special mention, inas |  | | Report (issue) | | Bottom Right: Laterite at Angadipuram in Mallapuram district, Kerala. Inner front Cover: Top: Pillow lava structure...(Chitradurga district) in Karnataka. Bottom: Volcanogenic agglomerate at Ulindakond a, Kurnool District, Andhra...Carboniferrous – Lower Cretaceous 153 3.7.1 153 Gondwana Supergroup a b c 3.8 Lower Gondwana Group...(Chittoor district) in Andhra Pradesh 208 8.2 Eparchaean unconformity at Tirumala (Chittoor district) in...(Cuddapah district) in AP 209 8.4 Pillow lava structure at Maridahalli (Chitradurga district) in Karnataka |  | | Book (edition) | | ialiloniia. (Upper) Quartz, Crystal Peak, Colorado. (Lower) L HOW AND STUDY TO THEM BY The Late EDWARD... Tetragonal Symmetry. itohedron. symmetry is lower than that of the isometric metry class in which...symmetry given on p. 28. There are other forms of lower symof the All the tetragonal forms that metry...crystal classes in the hexagonal system having lower symmetry than the one just described, but it seems...Fig. 162. 161. Aragonite, Flos Fcrri, Styria, Austria. Stalactitic Limonite, Ural Mountains, Russia |  | | Report (issue) | | . . . . . . . . . . . Virgin Lake celestite occurrence. . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . Gutz corundum occurrence. . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . Michaelis corundum occurrence. . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . Jewellville corundum occurrence . . . . . . . . . . . . . . . . . . . . . . ... .... " . . . .. . .. . . . Berger amazonite occurrence. . . . . . . . . . . . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | are characterised by a vague foliation due to a lower biotite content. Leucosomes are enriched in Rb,...the Punta OttioluPolto Cualdo formation. Field occurrence Migmatites of Porto Ottiolu The migmatite of...characterised both by a vague foliation due to a lower biotite content and by a texture strongly resembling...apatite, zircon, and epidote. It is worth to note the lower K-feldspar modal content of mesosomes with respect...content of K-feldspar in mesosomes is consistently lower than in leucosomes. Fibrolite and biotite are intimately |  | | Journal (issue) | | Association basic metamorphic rocks (e.g. Hungary, Austria, New Jersey/USA), 3. in limestone contact zones... Sugilite, Sugilite, A A Second Second Dunn, Occurrence: Wessels Wessels Mine, Mine, Kalahari Kalahari...Kalahari Manganese Manganese Field, Occurrence: Republic Republic of of South South Africa. Africa. Canadian...41-52. Shigley, J.E., Koivula, C.W, 1987. The The Occurrence Koivula, J.I., Fryer, Fryer, C.W., And Gemological...Province). Even between neighbouring mines of the Muzo district there is no very obvious geological relationship |  | | Report (issue) | | deposition ____ General features ________________ Lower shale member. _ _ ___-__-__ Limestone member. _____________..._-----_-----_-------_---General character and distribution. Lower member. ________________ Middle member. ________________...________________ Relation to Jefferson (?) dolomite. _ Occurrence. __ _ -_____-__-______Lithologic character. ____________...____________<>_______ Humbug formation.... _ _____________ Occurrence and thickness___-___-_ Lithologic character....Continued. Morgan (?) formation--__-_--___---______ ' Occurrence and character.___________ Correlation and age |  | | Book | | ZA aX Description of Minerals Actinolite Occurrence: Occurs generally in crystalline schists and...Remarks: A common rock-forming mineral. Albite Occurrence: Occurs in small crystals or, more often...used in the manufacture of ceramics. Analcite Occurrence: Occurs as free-growing crystals or in masses...the garnet, but its color, hardness, and its occurrence in lavas will serve in identifying this mineral...MINERALS 45 Figure 13 Analcite Andalusite Occurrence: Occurs most commonly in crystalline schists |  | | Report (issue) | | the dynamic nature of the interface between the land and the ocean. At present our activities ate affected...information on any useful discovery to the OWner of the land and to collect and deposit with the commissioners...Upper Secondary (modern Cretaceous fonnations and lower Tertiary green- sands); 3) Tertiary (modern Miocene);...paleontologist from New Jersey; and Shattuck from Mary. land, who "spilled over" into Delaware. B. L. Miller... A map of Pennsylvania, New York and the three lower counties of Delaware. James Parker, Printer, New |  | | Report (volume) | | ..................... Distribution and field occurrence. . ............................ 103 104 104........................ Distribution and field occurrence................................ Lithologic character........................ Distribution and field occurrence................................ Lithologic character........'............................. Geologic occurrence............................................ Character...... 141 7 PREFACE. By ALFRED H. BROOKS. The lower part of the Kuskokwim Valley has long been known |
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