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| Kyanite, Sillimanite, and Andalusite Deposits of the Southeastern States GEOLOGICAL SURVEY PROFESSIONAL...PROFESSIONAL PAPER 336 Kyanite, Sillimanite, and Andalusite Deposits of the Southeastern States By GILBERT...Gilbert Howry, 1912Kyanite, sillimanite, and andalusite deposits of the southeastern states, by Gilbert...Gilbert Howry, 1912Kyanite, sillimanite, and andalusite deposits of the southeastern states. 1960. (Card...(Card 2) 1. Cyanite. 2. Sillimanite. 3. Andalusite. 4. Aluminum silicates. 5. Mines and mineral resources |
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| extension in Kent. Notes on the Portsoy Coastal District. By GERTRUDE L. ELLES, D . S C , Newnham College...Portsoy Coastal District. 25 affected are not always connected with visible outcrops of igneous rocks...contact action since they occur in the vicinity of outcrops of igneous rocks. The general stratigraphy of...Findochty to show grades of metamorphism. 1, Cullen Quartzite. 2, Westsands Group. 3, Findlater Flags. 4, Crathie...Garron Point Group. 6, Sandend Group. 7, Durnhill Quartzite. 8, Older Granite. 9, Portsoy Group. 10, Older |
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| cross-cut S 2 Growth of And ± Cld (M ) 3 960–1005 quartzite/felsic gneiss Ms 40Ar/39Ar Cedro Cyn. were...schists which includes the 1-km-thick Ortega Quartzite (Bauer & Williams, 1989). The Hondo Group is generally...and lineated pelitic and amphibolite gneiss and quartzite. Minerals or mineral segregations indicate to...ductilely deformed feldspars aligned in S . In quartzite and amphibolite, cuspate 2 phase boundaries between...segregations in pelitic and felsic gneisses, oxides in quartzite and boudinaged2 calcsilicate pods in amphibolite |
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| T. Schaller, analyst. III. Pinal schist, Ray district, Arizona. Analysis made for Dr. F. L. Ransome..."Geology and Ore Deposits of the Breckenridge District, Colorado," Prof. Paper U.S. Geol. Surv. No. 75...alteration of monzonite porphyry in the Clifton-Morenci district as described by Lindgren, and Dr. A. C. Spencer...hydrothermal metamorphism of porphyry in the Ely district, Nevada. It is evident therefore that the chemical...determining the origin of a schist in a mining district is afforded by analysis III of Table II, hitherto |
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| ____________________ 1 U.S. Geological Survey, Western Region Earth Surface Processes Team W904 Riverside Avenue...polygon and arc feature classes, respectively. Each region or route subclass has its own feature attribute...First-order rock units are stored in the rockunit region subclass by grouping related polygons to associate...up a single rock unit. The units stored in this region subclass are the ones shown on the plot-file map...basement, cover, surficial) and stored in additional region subclasses. These subclasses allow the database |
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| INDUSTRIAL USE OF KYANITE, SILLIMANITE, AND ANDALUSITE.--------------------------------------------...size........ 26 A. A. Kyanite-impregnated quartzite forming crags on the southwest end of Graves Mountain...section of fresh quartzite from open cut in the saddle of Graves Mountain. Quartzite (qtz) is replaced... B. Thin section of quartzite from the south side of Graves Mountain. Quartzite (qtz) is replaced by...--------- !l6 Sketch of a vertical face of quartzite on the south side of Graves Mountain near the |
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| of Pinto Wash. Outcrops of lake beds in center of basin are probably Pliocene; outcrops of arkosic sandstone...(OR) TERTIARY SURFICIAL DEPOSITS Conglomerate, quartzite-clast (Quaternary and (or) Tertiary)—Boulder conglomerate...sandstone shed in coarse alluvial apron from quartzite outcrops on Pinto Mountain Sedimentary deposits, undivided...no remaining pavement. As mapped, may include quartzite-clast conglomerate unit (QTcq) by pervasively...Colluvial debris also is shed from resistant quartzite and gneiss ridges down recessive granite slopes |
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| ...........................................9 Quartzite conglomerate ............................................................................ 17 Quartzite .............................................................................. 25 Muscovitic quartzite .............................................................................35 5. Sketch of quartzite outcrop showing groups of arcuate layers ....................................56 6. Sketch of quartzite outcrop showing sigmoidal, recurved, and truncated |
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| Zone transition, Kumba Iron ore Thabazimbi mine, Andalusite Resources, Pilanesberg Alkaline Ring Complex...(S24° 54.341' E30° 07.742' 1046 m) We visited outcrops of the Middle Group chromitite seams and associated...aureole of the intrusion hosts the world’s largest andalusite resources (MAIER et al., 2012). The Bushveld...al., 2000). The layered Bushveld Complex with outcrops subdivided into the western, eastern and northern...layers. The layers dip towards the west. Footwall outcrops are norites continuing upwards towards mottled |
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| in Mr. Huntington has performed an excellent district. larly in distinguishing the coarse granite belt...Huntington.) GEOLOGY OF THE CONNECTICUT VALLEY DISTRICT. By C. H. Hitchcock, (Pages 408-427 by V. ...WHITE MOUNTAIN DISTRICT. J. 271 H. Huntington.) GEOLOGY OF THE MERRIMACK DISTRICT, WEST PART (the...GEOLOGY OF THE COAST DISTRICT. By IX. H. Huntington, GEOLOGY OF THE LAKE DISTRICT. By VIII. J. GEOLOGY...GEOLOGY OF THE MERRIMACK DISTRICT, EAST PART. C. H. Hitchcock, CLASSIFICATION OF THE By C. H. Hitchcock |
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| metamorphism permitted the appearance of staurolite and andalusite. The inferred sequence of events in the area...decipher the metamorphic and tectonic history of the region. Three distinct rock sequences were recorded: (1)...is divided into three members: (d) the Gavilan Quartzite Member, a thinly laminated, fine-grained metaquartzite;...laminated siliceous limestones. Staurolite and andalusite are locally prominent minerals in the pelitic...rock. Minor granitic and pegmatitic bo- belt in a region where high relief and recent dies are common. glaciation |
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| ____________________ 1 U.S. Geological Survey, Western Region Earth Surface Processes Team W904 Riverside Avenue...polygon and arc feature classes, respectively. Each region or route subclass has its own feature attribute...First-order rock units are stored in the rockunit region subclass by grouping related polygons to associate...up a single rock unit. The units stored in this region subclass are the ones shown on the plot-file map...basement, cover, surficial) and stored in additional region subclasses. These subclasses allow the database |
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| INTRODUCTION THE Pre-Cambrian terrain of Singhbhum district in Bihar and its adjoining areas of Keonjhar,...recognition of two distinct orogenic belts in this region and to the suggestion of a new correlation for...TEXT-FIG. 1.—Map showing the location of the Singhbhum region and the generalized structural trends in the Pre-Cambrians...FRAMEWORK OF THE REGION SOUTH OF THE COPPER BELT THRUST (a) Previous Work.—This region is characterized...undoubted Pre-Singhbhum granite metamorphics of this region were included by Dunn and Dey (1942) within their |
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| the country ( see Map 1 in folder). The line of quartzite mountains extending from Errigal northeasterly...the shearing out of one limb of a tight fold in quartzite produces a structure simulating clefonned cross-bedding...tern1ed here the Creeslough Succession, after the region in which all its men1bers outcrop. This is clearly...sequence in two of the n1ain areas in which it outcrops. Upward transitions can usually be established...break-the Horn Head Slide- above the massive Ards Quartzite which cuts out the entire Sessiagh-Clonmass Formation |
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| Geology and Ore Deposits of the Rico District, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 723...723 Geology and Ore Deposits of the Rico District, Colorado By EDWIN T. McKNIGHT GEOLOGICAL SURVEY ...------------------------------------Location and geography of district -----------History --------------------------...ne and metadiorite --------------Uncompahgre Quartzite -----------------Early Paleozoic hiatus -----...dle Pennsylvanian Series -------------Larsen Quartzite -------------------Hermosa Formation --- - -------------Middle |
 | Bauer, Wilfried, Walsh, Gregory J., de Waele, Bert, Thomas, Robert J., Horstwood, Matthew S.A., Bracciali, Laura, Schofield, David I., Wollenberg, Uwe, Lidke, David J., Rasaona, Imboarina T., Rabarimanana, Mamy H. (2011) Cover sequences at the northern margin of the Antongil Craton, NE Madagascar. Precambrian Research, 189 (3) 292-312 doi:10.1016/j.precamres.2011.07.018 | Journal (article/letter/editorial) |
| 1. Generalized geological map of the Antalaha region of northeastern Madagascar corresponding to the... On historical geological maps of the Antalaha region (Lenoble, 1936a; Bertucat, 1965a,b), distinct cover...metamorphic rocks including sericite schists, andalusite schists and quartzites were recognized on the...the first geological map of the Antalaha region (Lenoble, 1933, 1936a) and termed the “Série schisto-quarzo-calcaire”...nomenclature for cover sequences in the Antalaha region, northeast Madagascar. Lenoble (1933, 1936a) Bertucat |
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| absent, giving place to hornblende. Biotite, andalusite, and cordierite are common. Still farther afield...practically unknown. These two masses lie in a region of comparatively low relief, and little definite...rocks about half a mile wide. Felspathic quartzite outcrops at both ends of this mass and there can be...composed mainly of quartz derived probably from quartzite, or of serpentine or other ultrabasic rock. In...granite have been described by Wagner (11) in the region between 30 and 50 miles due south of Gwelo. In |
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| • r9z3 . Price 6s. 6d. N�t. • PREFACE THE region described in this Memoir contains a large variety...co111plex Jlroblems which t,1e geology of the district afforded. The Maps and liemoir as now published...THE • • l(EITH DIVISION • • • a. The Cullen Quartzite .. • " • • • • • � • • • • • • • ...Schist-Limestone) Group • • • • g. The Durn Hill Quartzite • • • Ii. The Portsoy Group • • • • • • j. The...Coast . . . . 2A. Epidote-granulite of Cullen Quartzite . . . . 2B. Aetinolite·schist of Garron Point |
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| non-metallic minerals that can be seen and studied in outcrops, quarries or rock-dumps within the province. Although...Maps A to M (though not restricted to roadside outcrops) show some areas between the TransTrans Canada...Canada Highway and the Flin Flon Snow Lake region that are accessible by road. Maps N to P show areas north...Bird Lake Cat Lake Garner Lake 93 Interlake region 94 ............................................. . . . . . . . . 43 43. Epidote veins in quartzite from Anderson Lake. . . . . . . . . . . . . . |
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| (OR) TERTIARY SURFICIAL DEPOSITS Conglomerate, quartzite-clast (Quaternary and (or) Tertiary)—Boulder conglomerate...sandstone shed in coarse alluvial apron from quartzite outcrops on Pinto Mountain and in northwestern Eagle...underlying deposits. Aprons connected with source rock outcrops. Units 1 and 2 crop out west of quadrangle (Powell...(Proterozoic)—Metamorphosed platform section of quartzite, pelitic schist and porphyroblastic granofels...quadrangle. Thermally metamorphosed throughout region. Deformed in the Chuckwalla, Eagle, and southern |
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| £1 15s. Od . net PREFACE TO FIRST EDITION THE region described in this memoir is situated in one of...Lochy and Loch Ness, cuts obliquely across the region from south-west to north-east, and admits the sea...1903, and thereafter under Mr. C. T. Clough as District Geologist. Mr. J. S. Grant Wilson mapped most...interpre tation of the geological structure of the district had been suggested by Mr. Maute and himself, he...of the volcanic rocks of Glen Coe, and a small district south of Glen Tarbert. The southern and south-eastern |
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| Stratigraphic—Pre-Cambrian—Congresses. 2. Geology-Rocky Mountains Region—Congresses. I. Grambling, Jeffrey A. II. Tewksbury...schematic structural cross-section. (a) Kyanite-andalusite-sillimanite schist, with biotite, muscovite,...shear zone. Minerals record minimal deformation; andalusite (gray) and sillimanite (red needles) are intergrown...is orange. (b) Kyanite-sillimanite-muscovite quartzite collected within the ductile shear zone that separates...the Early and Middle Proterozoic rocks in that region. This book is an outgrowth of the symposium. This |
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| 24W MAP OF TH E GIANTS RANGE GRANITE, POKEGAMA QUARTZITE, AND SURROUNDINGS, MINNESOTA Shows location of...Marquette district....................................... Southern Complex of the Marquette district............................................ Marquette region..................................................minerals of Keweenawan granite and other granites of region........................................................................... Sandstones of Felch district.............................................. |
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| eho eich etre Ne eeete eel eee eee ea 253 Andalusite, Sillimanite, and Kyanite by M. R. Blain, C....of some gold mines and prospects in the Letaba District..............cceccceeeues 82 Diagtammaticsection...133 Geological«mapiofithe: Namaqualand: copper district... ..../. 0c .ses 0 cosa ceevcece nosh eeure bes:...the tungsten deposits in the Namaqualand copper district..................0. 229 Section of the titaniferous-vanadiferous...east and west of the Central Witwatersrand outcrop region took place. After the extension of the deposits |
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| map of the Kenny Hill formation, Upper Paleozoic outcrops in Southeast Asia, Geosynclinal organization...7°N and is thus wholly within the equatorial region; under natural conditions, its hot, wet, equable...north central Borneo (Kalimantan). This larger region, which for convenience we may call “Chersonesia’’...age and to be overlain by Silurian schist and quartzite and Upper Silurian or Devonian marble, the latter...succession Devonian of Archeaen schist and quartzite, and Carboniferous limestone with that of Burma |
