 | | Report (issue) | | Formation ............................ 10 Cheshire Quartzite......... ... ................... 11 DunhamDolomite... 25 PETROGRAPHIC STUDY OF THE KAOLIN AND THE QUARTZITE ...... 26 The kaolin . .........................examination ................ 27 •. The quartzite and cast of kaolinic quartzite ........... 27 Thin section analyses...23 .17. Outcrop of easterly dipping Cheshire Quartzite ............. 24 18. South face of Bushey pit...analyses of crude kaolin . 3. Chemical analyses of kaolinite, muscovite and sericite ........25 [4] - GEOLOGY |  | Dobrzyński, Dariusz, Duliński, Marek, Birski, Łukasz, Barrett, Jordi (2021) Origin of the chemical composition of São Francisco ultra-fresh thermal water (Itabira region, Minas Gerais, Brazil) Applied Geochemistry, 134. 105090pp. doi:10.1016/j.apgeochem.2021.105090 | Journal (article/letter/editorial) | | São Francisco ultra-fresh thermal water (Itabira region, Minas Gerais, Brazil) Dariusz Dobrzyński a, *...studied water, contained in highly resistant quartzite-dominated aquifer rocks. Application of a geothermometric...illite) aluminosilicate minerals accompanied by kaolinite and gibbsite formation are the dominant processes...Minas Gerais state today. Water flows out from quartzite aquifer-rocks, which are highly resistant to weathering...local precipitation. Groundwater associated with quartzite rocks are rare in nature due to the relatively |  | | Report (issue) | | ...........................................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 |  | | Report (chapter) | | 'low level' laterite profile from Tira, in Busia District, Uganda, is described. Mineral and chemical progressions...Uganda drilling records) is located in Tira, Busia District, near the Victoria/Kyoga watershed, close to the...also forms lowlands above which rise narrow quartzite ridges. To the east of Tira rise the prominent...technique which separates the numerous small quartzite and carbonatite summits from the much more extensive...small summits attributed to carbonatite and quartzite outcrops from the laterite-blanketed Kasubi and Tanganyika |  | | Report (issue) | | ________________ Virginia - __ -__ _ ___________ Farmville district, Buckingham, Prince Edward, and Charlotte Counties...schist and gneiss. Kyanite schist _____ Kyanite quartzite ___________ ______________________ Hornblende...deposits Continued Virginia Continued Farmville district, etc. Continued Rock types Continued Other quartzose...localities North Carolina-South Carolina Kings Mountain district, Cleveland, Gaston, and Lincoln Counties, N.C...schist Manganiferous schist Kyanite quartzite Sillimanite quartzite Yorkville quartz monzonite. _._ Diabase |  | | Report (issue) | | CONTRIBUTIONS TO PRECAMBRIAN GEOLOGY OF IAKE SUPERIOR REGION P.K. SIMS and LM.H. CARTER, Editors U.S. DEPARTMENT...(Contributions to Precambrian geology of Lake Superior region ; ch. B) (U.S. Geological Survey bulletin ; 1904-B)...references (p. Supt. of Docs, no.: I 19.3:1904-6 1. Quartzite Wisconsin. 2. Geology, Stratigraphic Proterozoic...Description and interpretation of individual quartzite occurrences Hamilton Mounds B3 Necedah area B6...Mountain B12 Quartzite at McCaslin and Thunder Mountains B12 Barron Quartzite and quartzite at Flambeau |  | | Journal (article/letter/editorial) | | position of Black Peak 1662 2. Breccia pipe and quartzite outcrop on the south side of Black Peak 1663 3...in the Echo Cliffs monocline 1668 6. Columnar quartzite in outcrop northeast of the breccia pipe 1670...in places stained with iron oxide. Resistant quartzite crops out on the southern slope of the butte,...the bench grades into the Red Lake monocline, Quartzite Porous Sandstone of the cementation that accompanied...section is exposed (Fig. 5). Quartzite Figure 2. Breccia pipe and quartzite outcrop on the south side of |  | | Report (issue) | | County . . . . . . . . . . . . · .23 Iron Springs district deposits . . . . . . . . . . . . . . . 23 Location... . . . . 31 9. Size and shape of Iron Springs district intrusions, from outcroppings and geophysical...porphyry, Iron Mountain. . 40 13. Iron-Springs district iron occurrences, Iron County . . . . . . . ....Washington County iron occurrences .84 30 Bull Valley district iron occurrences, Washington County . . . . .... . . .90 31. Pilot iron deposits, Bull Valley district, Washington County . . . . . . . . . . . .93 |  | | Report (issue) | | 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 |  | Taylor, Cliff D., Finn, Carol A., Anderson, Eric D., Joud, M. Y., Taleb, M. A., Horton, John D. (2015) Algoma-, Superior-, and oolitic-type iron deposits of the Islamic Republic of Mauritania (phase V, deliverable 83): Chapter O in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II). Open-File Report Vol. 2015 (2013-1280) US Geological Survey doi:10.3133/ofr20131280o | Report (issue) | | terrane, and (4) the Saouda Group of the Inchiri district. Neoarchean Algoma-type BIF is present in the...Eizzene and Oumachouema Groups of the Inchiri district, (6) the Ijibbitene Group of the Ijibbitene massif........................... 48 5.2.5 The Inchiri district.................................................location of geochronology samples DB07RIM-46a (quartzite in lower member) and DB07RIM-46b (muscovite schist...lower member of the Tazadit Formation, blocky quartzite interbedded with muscovite schist. Location of | | | Report (issue) | | terrane, and (4) the Saouda Group of the Inchiri district. Neoarchean Algoma-type BIF is present in the...Eizzene and Oumachouema Groups of the Inchiri district, (6) the Ijibbitene Group of the Ijibbitene massif........................... 48 5.2.5 The Inchiri district.................................................location of geochronology samples DB07RIM-46a (quartzite in lower member) and DB07RIM-46b (muscovite schist...lower member of the Tazadit Formation, blocky quartzite interbedded with muscovite schist. Location of |  | | Report (volume) | | rapid crystallization of clay minerals like kaolinite and montmoril- lonite and of simple oxides and...detected below 14.5 m. The dis- tribdtion of kaolinite is similar and the quartz content is also higher...is there evidence of degradation. Although the kaolinite is associated with the feldspars, this probably...was proposed by Hodgson et al. (1967) for the kaolinite in the lower horizon of the Claywith-Flint, and...clay mineralogy of some tills in the Cambridge district. Clay Miner. Bull, 3, 193-205, Piccort, G. D |  | | Report (issue) | | studies are brought together in this paper. The district is one of peculiar interest,, having a complicated...practical benefit in developing the industry in this district. Very respectfully, C. W. HATES, Geologist in........... Location and general features of the district......................................................................................... 26 Outcrops.................................................geologic map of the Kentucky-Illinois fluorite district, showing its general relations to surrounding |  | | Report (issue) | | Manitoba Precambrian Rare Elements Dimension Stone Quartzite Peat Moss Phanerozoic Cement Aggregate Lime and...Manitoba's first commercial stone quarry, in the Garson district, to serve Canada's booming construction industry...Gypsumville, near Lake St. Martin in the Interlake region. A railway line reached Gypsumville in 19ro, and...pegmatites, opening up new mineral potential for the region. Drilling for tin in 1929, Jack Nutt Mines Ltd...relief, is generally less than eight metres. The region is drained by the Saskatchewan, Red, and Assiniboine |  | | Report (issue) | | of the geology of the tunnel area to that of the region. The geology along the tunnel line was mapped prior...rocks that have been intruded by two dikes of the region followed the development of types of Precambrian...Plume Granite and migmatite and commonly forms the outcrops in the heavily wooded area. The tunnel area has...bodies of Silver Plume Granite, and many of the outcrops of the amphibolite unit are inclusions within...Garnetiferous quartzite. From 50-ft-wide layer of banded quartzite (interlayered quartzite and garnetiferous |  | | Report (issue) | | Direction and angle of dip of cross-strata in 293 outcrops of De Chelly sandstone in Fort Defiance quadrangle...beautiful, land. In any geographic classification, this region in northern Arizona and New Mexico would be considered...industrial picture of the nation. In this arid region the problem of water supply is the most acute of...Colorado Plateau. For the most part this extensive region is characterized by accumulated layers of sedimentary...(granite, etc.) or metamorphic (gneiss, schist, quartzite, marble, etc.). The old floor, or basement, is |  | | Book (edition) | | 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...x 629,72 metres), in any one magisterial district. An amount of R2 is payable for every such permit |  | | Report (issue) | | The Eureka Mining District Nevada By THOMAS B. NOLAN GEOLOGICAL SURVEY PROFESSIONAL PAPER 406 Prepared...______________________________ _ Prospect Mountain quartzite ________________ _ Pioche shale _______________________________...group _____________________________ _ Eureka quartzite ___________________________ _ Hanson Creek formation...the Eureka mining district, Nevada. 2. Geologic sections of the Eureka mining district, Nevada. 3. Geologic...Geologic structure map of the Eureka mining district, Nevada. UI 24 25 26 26 26 26 27 27 27 27 28 28 29 |  | | Report (issue) | | · as a joint program of the Manhattan Engineer District and its successor, the U. S. Atomic Energy Commission...___ _ Pitchblende deposits in the Central City district and adjoining areas, Gilpin and Clear Creek Counties...relation to uranium-vanadium deposits in the Uravan district, Montrose County, Colorado, by Robert L. Boardman...calcium phosphate zone of the land-pebble phosphate district of Florida, by James B. Cathcart-------------...Brock__________________________ Thorium in the Powderhorn district, Gunnison County, Colorado, by Stewart R. Wallace |  | | Report (issue) | | Geology and Ore Deposits of the Itabira District Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL...341-C Geology and Ore Deposits of the Itabira District Minas Gerais, Brazil By JOHN VAN N. DORR 20 and...___________________________ Schists____________________________ Quartzite and meta-arkose(?)_________ Dolomitic schist ...46 47 49 49 50 51 Page Geology of the Itabira district Continued Structure Continued Folds in other ..._ Conceigao area_____________________________ District reserve estimate.._"______________________ Summary |  | | Book | | Contents 4.6.5 Candelaria, Punta Del Cobre District, Chilean Coastal Belt. . . . . . . . . . . . ...(South Australia), the Fe deposits of the Kiruna district (Sweden), Fe-REE deposits of Box Bixby and Pea...of Canada – A synthesis of major deposit types, district metallogeny, the evolutionof geologicalprovinces...1999). Metals, oxides and silicates dominate in the region between Mercury and the asteroids, whereas further...delivering water would have come from the Jupiter region. Pinti (2005) conceded that the problem remains |  | Burke, Adrian, Field, David, Brewer-LaPorta, Margaret, Burke, Adrian, Field, David, Brewer-LaPorta, Margaret (2010) Ancient Mines and Quarries: A Trans-Atlantic Perspective. Oxbow Books. | Book | | Erwin 56 7 Geochemical Signature of Mistassini Quartzite and Ramah Chert Artefacts and Quarries, Québec/Labrador...Sheguiandah site? An Evaluation of Quarrying and Quartzite Material Selection Based on Petrographic Analysis...containing silica-rich rocks in the Haut-Quercy region of France. The purpose is to better understand...Haut-Quercy region. The authors discuss the need for more fieldwork on the flint-bearing outcrops of the Dogger...geological reconnaissance to identify and map outcrops of flint using GPS and technical datasheets, 2) | | Burke, Adrian, Field, David, Brewer-LaPorta, Margaret, Burke, Adrian, Field, David, Brewer-LaPorta, Margaret (2010) Ancient Mines and Quarries: A Trans-Atlantic Perspective. Oxbow Books. | Book | | Erwin 56 7 Geochemical Signature of Mistassini Quartzite and Ramah Chert Artefacts and Quarries, Québec/Labrador...Sheguiandah site? An Evaluation of Quarrying and Quartzite Material Selection Based on Petrographic Analysis...containing silica-rich rocks in the Haut-Quercy region of France. The purpose is to better understand...Haut-Quercy region. The authors discuss the need for more fieldwork on the flint-bearing outcrops of the Dogger...geological reconnaissance to identify and map outcrops of flint using GPS and technical datasheets, 2) |  | | Report (volume) | | MINES With a section on the THUNDER MOUNTAIN DISTRICT By B. F. LEONARD, U.S. GEOLOGICAL SURVEY, and...Dolomitic marble _______________________________ Quartzite, gneiss, and schist _________________________...Formation ___________________________ Hoodoo Quartzite ______________________________ Age and stratigraphic...______________________ Salmon River district ____________________________ Chamberlain district _____________________________..._______ Edwardsburg district _____________________________ Ramey Ridge district ____________________________ |  | 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...recognized on the first geological map of the Antalaha region (Lenoble, 1933, 1936a) and termed the “Série s...nomenclature for cover sequences in the Antalaha region, northeast Madagascar. Lenoble (1933, 1936a) Bertucat...suggest the name Andrarona Group, and define the outcrops along the Andrarona River as the type locality |
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