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| PREFACE The barytes deposits of the Cartersville district of Georgia are the most productive in the United...geology and barite deposits of the Cartersville district, Ga.: ·The Tradesman, pp. 35-37, May 22, 1910...in ten days of :field work in the Cartersville district. Georgia continues to lead the states in the production... . . . . . . . . . . . . 17 -1H Oarters·ville district ......................................... 19-125... . . . . . . . . . . . . . . . 22-23 Weisner quartzite ............................ :. . . . . . 23-25 |
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| CENTRAL MINNESOTA INCLUDING THE CUYUNA IRON-ORE DISTRICT BY E. C. HARDER AND A. W. JOHNSTON MINNEAPOLIS... 23 Descriptions of rock outcrops.............................. 30 Outcrops of silicic igneous rocks.... . . . . . . . . . . . . . . . .... . . . 40 Outcrops of subsilicic igneous rocks. . . . . . . . . ...counties. . . . . . . . . . . . . . . . . . . 52 Outcrops of slate, schist, and other metamorphic rocks...southern St. Louis counties. . . . . . . . 65 90 Outcrops of sandstone and other clastic rocks. . . . . |
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| ________________ 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 |
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| Pavlides ............. STOP 1, 8 STOP 1A. Mineral district Chopawamsic Formation at Contrary Creek by J.E... Gair .............. 24 Ores of the Mineral district by J.R. Craig, J.W. Miller, L.J. Cox, and R.F...Betty Baker mine by J.E. Gair Drill core, Mineral district by J.E. Gair ................. ................of the Mineral district. STOP LA and STOP 2 shown 4. Geologic map of the Mineral district, Louisa County...of some major sulfide deposits of the Mineral district ...................... 29 2. Ore minerals of |
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| most part schist and gneiss but also phyllite, quartzite, and crystalline limestone, all strongly folded...alluvial overburden is thin between widespread outcrops, so all the deposits could be mined from open...relief with the exception of several disconnected quartzite ridges. The southern boundary is transitional;...side of the Iguatu basin, the Serra de Moraes, a quartzite ridge, rises above gently rolling country. At...area (pp. 129-132), except the ridge-forming quartzite, underlie the areas of comparatively low relief |
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| disseminated in schistose rocks - gold associated with quartzite - gold mineralization confined to conglomerates...classify the gold deposits and occurrences in the region with respect to their geological setting and host...~ Fig. 1. Geological sketch map of the Adola district Keys: 1.Cenozoic basalts, rhyolites and tuffs;...Transversal elements of the region of north-south orientation. I. Part of the region underlined by the Early...Precambrian crystalline basement (the eastern and western region). 11. The Gariboro granite gneiss domal structure; |
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| 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 |
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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 ...modern mineral technology~ became a lead, zinc, and pyrite camp UNITED STATES GOVERNMENT PRINTING OFFICE...------------------------------------Location and geography of district -----------History --------------------------...ne and metadiorite --------------Uncompahgre Quartzite -----------------Early Paleozoic hiatus ----- |
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| of the Cartersville district has been worked out by the senior writer. The district is in the southeastern...a series of unaltered sediments consisting of quartzite, limestone, shale, and dolomite, all Paleozoic...area. The Paleozoic rocks outcrop in the valley region to the west. In descending order and as at present...and Rome formations. Beaver limestone. Weisner quartzite. All these formations except the Knox dolomite...Cambrian. Of these formations, only the Weisner quartzite and Beaver limestone are of interest in. this |
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| . . . . . . . . . . . . . . . . . . LORRAIN QUARTZITE . . . . . . . . . . . . . . . . . . . . . . ....SHEGUIANDAH COSBY TOWNSHIP BAR RIVER BELLEVUE GRENVILLE QUARTZITE . . . . . . . . . . . . . . . . . . . . . . ....writer examined a number of occurrences of Lorrain quartzite along the north shore of Lake Huron. Brief preliminary...occurs commonly as pegmatitic and vein quartz, quartzite, sandstone, and unconsolidated sand. Deposits...quarry, near Whitefish Falls, district of Sudbury, to supply quartzite for flux, and this single operation |
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| CONTENTS V Detailed descriptions Continued. Verde district Continued. Page Jerome-Verde Development Co 88...________ 92 Prospecting operations in the Verde district _ 93 Black Hills district____________________-_____-97..._____ Logan mine ________ ________ ____ Prescott district ____________________ ______ Geolpgy__ _.._____...district____________________________ Hassayampa district._____________________________ Big Pine mine__...CONTENTS Detailed descriptions Continued. Hassayampa district Continued. Page Crook vein________________________________ |
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| study of the phenomena of contact becomes in this region a study of " inclusions "; and the larger of the...the exceptional geological features of the region. f The region of Cruger's Point is continued northward...the Cruger schists make the south border of the region precisely as near Cruger's, and have the same strike...whitish, well-bedded, conformable quartzite (a to b); this quartzite changes gradually to jointed massive...massive granitoid and gneissoid quartzite, with only an occasional bedded band or plane ; each such band |
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| along the international border in the boot heel region of southwestern New Mexico K. E. Zeigler', P. Hogan^...either known procurement sites ("quarries") or outcrops identified as the closest source to a given site...constructed from obsidian were transported into the region from northern Mexico and eastern Arizona, indicating...Introduction Lithic procurement strategy in the Boot Heel region of southwestern New Mexico has largely gone untreated...procured from the major geologic features of the region. The Boot Heel of New Mexico, as well as southeastern |
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| Mountain thrust lies between the Ordovician Eureka Quartzite and underlying Ordovician Pogonip Group and truncates...truncates west-dipping beds of Eureka Quartzite, demonstrating younger over older geometry, in contrast...reconstructions of the tectonic history of the region suggest that some geologic relations also may be...others, 1993); (2) significant tectonism in the region during the Late Jurassic Elko orogeny (Thorman...(499 m) Ordovician Eureka Quartzite, which is a thick- to thin-bedded quartzite and sandy dolomite. These |
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| 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 ____________________________ |
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| near Cartersville, Ga. 2 Exposure of Weisner Quartzite, near Cartersville, Ga. 3 View Showing the Ridge-Valley...Ridge-Valley Type of Topography in the Cartersville District, Ga. 4 One of the Open-cuts of the Linderman Ocher...American Ocher Co. r I A View of the Weisner Quartzite on the Rowland Springs Road, near Cartersville...of the Cartersville District. Geological Sections through, the Cartersville District. MAPS 1 2 3 4 ...Bartow County. Topographic Map of the Cartersville District, by the United States Geological Survey. Map Showing |
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| of this boundary he failed to distinguish the quartzite-bearing Knockrath strata from the Clara Series...but to the S.W. using the more prominent quartzite outcrops (of the Knockrath Series) as the basis of...north-western flanks of the synclinorium of the Arklow district, but in the south-eastern limb similar sediments...distance beneath the thick volcanic series of the district, have yielded Arenig graptolites (Elles, 1910...the Dunganstown Sandstones, but in the Glenealy district the persistence for over a mile of mauve slates |
 | Houston, Robert Stroud, Desborough, George A., Karlstrom, K.E., Sharp, W.N., Graff, Paul J. (1979) Progress report on the study of radioactive quartz-pebble conglomerate of the Medicine Bow Mountains and Sierra Madre, southeastern Wyoming. Open-File Report Vol. 1979 (79-1131) US Geological Survey doi:10.3133/ofr791131 | Report (issue) |
| assemblage of Phantom Lake 14 Trough crossbeds in quartzite of the upper part of the assemblage of Phantom...contains ore grade material at the surface, but most outcrops are oxidized, and geochemical studies by Miller...suggest that uranium has been leached from surface outcrops. Drilling, therefore, may be the only way to prove...resembled the Huronian rocks of the Great Lakes region. The first description of miogeosynclinal metasedimentary...the presence of radioactive conglomerates in the region. During the 1960's and 1970's, geologic studies |
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| 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 |
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| ----------------------------------------------'Pyrite and hematite...·------------------------------...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...replaced by kyanite (k) and pyrite (p). One nicol, x 30. B. Thin section of quartzite from the south side of...of Graves Mountain. Quartzite (qtz) is replaced by kyanite (k), which is altered on the edges to sericite |
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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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| 77 GEOLOGY AND ORE DEPOSITS OF THE PARK CITY DISTRICT, UTAH BY JOHN J\IIASON BOUTWELL WITH CO)l"TRIB"CTIO)JS......................... . History of Park City district ................. , .................................. . Descriptive geology of the Park City district ................................................ CONTENTS. Descriptive geology of the Park City district-Continued. Page. Sedimentary rocks-Continued.... CONTENTS. 5 Descriptive geology of the Park City district-Continued. Page. · Metamorphism........ . . . |
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| System. ______________________________ Bolsa Quartzite. ____________________________ Lithology. ____...Aravaipa district from 1915 to 1958________ _----- -_-----8. Production of the Copper Creek district from...Tertiary age and Quaternary alluvium. The rocks of the region range in age from Precambrian to Recent and have...quartz-muscovite-chlorite schist, hornfels, and quartzite; Laurel Canyon Granodiorite, intrusive into Pinal...includes, from oldest to youngest, the Bolsa Quartzite of Middle Cambrian age, Martin Formation of Late |
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| Director Bulletin 842 OF THE GREATER HELENA MINING REGION MONTANA BY J. T. PARDEE and F. C. SCHRADER UNITED...______________________-__-_________--_------___-_ Ophir district.________________________________________________...__________---__--_-___ Austin district._.____..._..._._.____._____.____.___-.___._____ Marysville district.___________...___________________________________________ Gould district._______________________________________________ Stemple...._ Heddleston district.___________________________________________ Wolf Creek district.._..........__ |
 | Jacobson, Herbert S., Pierson, C.T., Danusawad, Thawisak, Japakasetr, Thawat, Inthuputi, Boonmai, Siriratanamongkol, Charlie, Prapassornkul, Saner, Pholphan, Narin (1969) Mineral investigations in northeastern Thailand. Professional Paper 618. US Geological Survey doi:10.3133/pp618 | Report (issue) |
| visits to villages in the area to locate mineral outcrops or boulders known to the local residents, followed...(pi. 5O) indicated that the anomaly was caused by pyrite mineralization. ELECTROMAGNETIC Electromagnetic...erosion above an elevation of 300 m where rock outcrops are only slightly weathered, in contrast with...Sandstone, quartzite, phyllitic shale, slate, and limestone. Unnamed Argillite, quartzite, slate, phyllite...rocks including phyllitic shale and sandstone, quartzite, slate, and limestone which were previously included |
