 | | Book | | exploration of copper-gold at Reko Diq in Chagai district of Balochistan province has brought Pakistan amongst...and Partisan areas near Krinj village, Chitral district. Stibnite (Sb2S3) is found as veins, lenses and...(Ahmad 1986). All these deposits occur in Chagai District of Balochistan province. Similar deposits may...from Saindak porphyry copper deposits in Chagai district of Balochistan (The production figures are given...discovered by the GSP at Dilband in Kalat district, Uthal in Lasbela district of Balochistan and Nizampur area |  | | Book | | András Nagymarosy • Tibor Szederkényi Geology of Hungary Editor János Haas E€ otv€os Loránd University...Geophysical and Space Science Research Group Budapest Hungary ISBN 978-3-642-21909-2 ISBN 978-3-642-21910-8.... . . . 3.2.2.1 Continental Formations, North Hungary . . . 149 . 151 . 155 . 156 . 156 . 159 . 159... 3.4 4 Brackish to Marine Formations, North Hungary . . . . . . . . . . . . . . . . . . . . . . . ...2.3.1 Northwest Hungary . . . . . . . . . . . . . . . . . 3.2.3.2 Northeast Hungary . . . . . . . . |  | McLemore, Virginia T., Donahue, Kelly, Breese, Michael, Jackson, Meghan I., Arbuckle, Jeffrey, Jones, Glen (2001) Introduction to mineral-resource assessment of Luna County, New Mexico. Open-file Report 459. New Mexico Bureau of Geology and Mineral Resources doi:10.58799/ofr-459 | Report (issue) | | MINERAL-RESOURCE ASSESSMENT OF LUNA COUNTY, NEW MEXICO Virginia T. McLemore, Kelly Donahue, Michael...New Mexico State Land Office 1 SUMMARY Luna County, in southwestern New Mexico (Fig. 1) is not well...metals and nonmetals have been produced from the county from 1876 to 2000. Much of this production has...found in 16 mining districts in the county. The Cooke’s Peak district ranks 5th in lead production in the...state and 9th in zinc production and the Victorio district ranks 7th in lead production in the state. Native |  | | Journal (article/letter/editorial) | | with certainty to the spherulitic and 1)amled rhyolite of Tom's ~Iouse on the west side of Skomer Island...is revealed between St. Ishmaels and Marloes. A rhyolite, which here forms the lowest exposed member of...]taverfordwest, about 10 miles away. I n t h a t district there is practically an u n b r o k e n succession...pre-Cambrian rocks of St. David's or of the Hayscastle~ district are there any rocks that have much in common with...description, and penetrated only by a few basic sills. The suba~rial character of the flows seems to be proved by |  | | Journal (article/letter/editorial) | | coloration in quartz from Llano rhyolite (llanite), north-central Llano County, Texas MrcHl.Br E. Zor,nNsxy...Blue quartz phenocrystsfrom the Llano rhyolite (llanite), Llano County, Texas, derive their coloration from... 3t4 ZOLENSKY ET AL.: BLUE QUARTZ FROM LLANO RHYOLITE ever,in the majority of instances,blue coloration...unusual controversy surrounds blue quartz from Llano County, Texas. In the initial report ofthis occurrence...blue quartz phenocrysts from the Llano rhyolite, from Llano County, Texas, locally called "llanite" (Iddings |  | | Report (issue) | | relating to individual nining properties in the district. Respect{ully subrnitted, Wrr"eun A. NEr.soN...Geologic age ............... 4U Uses ....,........ 4E Rhyolite 4E Occurrence 4E Megascopic characters 49 )u{icroscopic...deposits Igneous rocks............ The mines of the district ?3 74 74 74 75 z6 ................. Gold...and prospects ..................... Culpeper County Culpeper mine . 67 6? 6? 68 oo 6g ...... j....8 ?8 ?8 Tenr,r or CoNtENts The mines of the district lcontinued) Introduction (continued) Gold mir-res |  | Titley, S., Aiken, D., Barter, C., Jansen, L., West, R. (1986, March) Frontiers in geology and ore deposits of Arizona and the southwest, Field Trip Guidebook 9 - Geology and ore deposits of the Pima Mining District. Guidebook. Arizona Geological Society | Report (issue) | | d Geology and Ore Deposits of the Pima Mining District March 22, 1986 Leaders: S. Titley (U. of A.)...GEOLOGY OF ORE DEPOSITS OF THE PIMA MINING DISTRICT. PIMA COUNTY. March 22. General Leader: S. Associate...GEOLOGY OF ORE DEPOSITS OF THE PIMA MINING DISTRICT, PIMA COUNTY, General Leader: S. R. Co-leaders: D...University of Arizona, am Depart for Pima mining district. 5: 00 pm Drivers: front of Student Union Trip...accessible mines, including Sierrita and mines, district and a review of the geology. at Mission |  | | Journal (article/letter/editorial) | | H., and Hall, C. H., 1975, SPSS primer: McGraw-Hill Book Co., New York, 134 p. Mutschler, F. E., Rougon...-Statisticalpackage for the social sciences (2nd ed.):McGraw-Hill Book Co., New York, 657 p. tlStitttStttttttttt...P|RALKAL|N| OOZ ULTRAHAFZC (GOLOUR INDEX CREATER THAN TS) SUBA~KALZNE RDCKS=.|UBOZV|OEO INTO THOLEZZTZC SER|IS...THOLEIITXG ANDES~TE THOLE]IT|G OAGITE THOLEZITIG RHYOLITE OOS 009 010 011 012 CALCeALKAL]N! SER|ES CA[C-ALKAL|NE |  | | Report (issue) | | particulars, or unquestionably fron1 the same small quarry) made by possibly as a whole. A low summation may...New Jersey, Pennsylvania, Delaware, :Maryland, District. of Columbia, Virginia, Kentucky, North Cn.rolina...Saxony, Silesia. Austria-Hungary: Bohemia, Moravia, Lower Austria, Galicia, Hungary, Bosnia, ~eyrol. Switzerland...omission of some details. such as distances and quarry names. With some exceptions, such as the use of...country is omitted if the State, province, or district is given and is well known, though it is inserted |  | | Journal (article/letter/editorial) | | that alkali feldspar phenoerysts in peralkaline rhyolite,s have lower Ca/(Na + K) ratios than do the associated...~nferred flora data it, Noble (1968). 1. Subatkaline rhyolite from Ethiopia, lecalit~ unknown. 2. Pumice fragment...rocks are 270 Drexler et al. LITHOS16 (1983) SUBA~.KALINE Z _o ,~ MELTS ~I¢// i g " ~ MELTS...silicic rocks cannot be ,produced from a subalkaline rhyolite by feldspar fractionafion alone. Therefore, a...l t a genesis. Detailed studies of subalk~line rhyolite to comendite to pantellerite sequences are needed |  | | Journal (article/letter/editorial) | | and Associated Metamorphic Rocks of the Lake District.--Part II. On the Eskdale and Shap Granites, with...Limestone. J Calcareous Breccia. Coniston Limestone, ~ Rhyolite. ~Lower (StileEnd) Limestone. Upper part of "Borrow-...ashy matrix with rounded and angular fragments of rhyolite. The upper par~ of this breccia consists of a...a limestone with a few more or less rounded rhyolite fragments, whilst the base is to a large extent composed...Below this is a thin ash band, and then a thick rhyolite, nodular at the summit and fissile below. This |  | | Report (issue) | | Saguache County. 2. Geology Colorado Gunnison County. 3. Uranium ores Colorado Saguache County. 4. Uranium...Uranium ores Colorado Gunnison County. I. Title, II. Series: Geological Survey professional paper ; 1457...Regional geology .................... Cochetopa district ................... Geologic setting ...........3 6 6 6 7 10 12 12 13 13 19 23 Marshall Pass district ........................... Geologic setting ........ 3. Generalized geology of the Cochetopa district, Saguache and Gunnison Counties, Colorado ... |  | | Journal (article/letter/editorial) | | (Rittmann, 1962; Macdonald, 1972; Moore, 1975). Suba queous eruptions of andesite lava also yield similar...others). Even in the case of subaqueous dacite and rhyolite, pillow lavas have been rarely reported (Snyder |  | | Report (issue) | | latite tuffs of the Spears Ranch member and the rhyolite tuffs of the Hells Mesa member of the Datil formation...and the volcanics, which he called trachyte and rhyolite intrusives. In 1913 Dean E. Winchester made a...te rn Soco rro Cou n ty and e as te rn C a tron County , Ne w Me xico . The quad ra ngle was de si g na...from a typical exposure on Mesa Verde, Montezuma County, Colorado. He divided the group into a "Lower Escarpment"...rkose . The a rko se is m ade up la rge l y o f suba ngul a r g ra in s th a t a re poo rl y so rte d |  | | Journal (article/letter/editorial) | | granite Medium grained granite Granite porphyry Rhyolite Aplite Quartz veins Alluvium Fig. 2 Geological...phase and represented by granite porphyry and rhyolite. At places Degana Granite is greisenized. A brecciated... 373–408. Narayana, B. I., Malikharjuna, R. J., Suba, R. M. V., Murthy, N. N. and Divakara, R. V. (2000)...of the McConnochie greisenized granite, Reefton district, Westland, New Zealand. New Zealand Jour. Geol...modelling of the Degana tungsten deposit, Nagaur district, Rajasthan (India). Unpubl. PhD Thesis, Jammu |  | | Journal (article/letter/editorial) | | THE RHOBELL FAWR DISTRICT. 46~ 16. T H ~ GEOLOOY 0]c l h e I{I[OBELL FAWR DISTRICT ( M E R I O ~ET~)...shown in the appended sketch-map (.fig. 1). The district examined lies within the parish of Llanfachreth...Thomas Belt, 1 several references are made to the district including Rhobell Fawr, and the broad distribution...part of the area, and, even more so than in the district south of the Mawddach Estuary, give rise to unusually...'On the p. 536. Lingu~a Fl~gs of the Dolgelley District' Geol. Mag. 1867, 212 Downloaded from http://jgslegacy |  | | Journal (article/letter/editorial) | | nicols, scale bar: 0.1 mm). (f): Groundmass of rhyolite composed of clear glass and plagioclase microlites...with an irregular contact (Fig. 2e). Rhyolites: Rhyolite samples are usually massive, 9.1 Amp=amphibole...Ga 0 uLQ2 ti o0 1 p 0 8 alkaline •r • suba 06 N Y • 04 z d 00 2 0 50 55 60 65 70...Trough basalt and rhyolite magmas; that is, by mixing of BAB basalt and IA rhyolite magmas. There are...of this mixing process. (1) BAB basalt and IA rhyolite magmas were contemporaneously generated from the |  | | Report (issue) | | Peak is large dome at right. Part of residential district of Town of Mammoth Lakes at right center. See...Wilson kept him busy there for decades, and Dave Hill drew him into Mammoth Mountain investigations in...geologic map provided a guide to our investigations. Hill and Margaret Mangan have ably overseen USGS research...reviewed by Charlie Bacon, Margaret Mangan, and Dave Hill. iv Contents Acknowledgments............................................15 Early Postcaldera Rhyolite.............................................. |  | | Journal (article/letter/editorial) | | diatrmm~s ~%rs subaerial lava flows suba~eous lava flows VOLCANIC I suba~eous ex~losive vole. subglacial...breccias associated with ore, Warren (Bisbee) mining district, Arizona. Econ. Geol., 63: 1-12. Bryant, D.G....Geology and ore deposits of the Warren mining district. In: S.R. Titley and C.L. Hicks (Editors), Geology...1515-1522. Busby-Spera, C.J., 1984. Large-volume rhyolite ash flow eruptions and submarine caldera collapse...origin of massive sulphide deposits, Gossan Lead District, Virginia. Econ. Geol., 79: 1483-1520. Garner |  | | Journal (article/letter/editorial) | | et al. 2010). Numerous small dykes (e.g., Skalka Hill near Bánov) or small bodies (like trachyandesite...trachyandesite to trachydacite cedar-tree laccolith on Bučník Hill near Komňa, Fig. 2a–d) intruded the flysch sediments...Bučník Hill quarry: a – Part of the cedar-tree laccolith exposed in the quarry on the Bučník Hill (photo...Trachybasalt enclaves in trachyandesite from the Bučník Hill; c – Gabbro enclave in trachydacite; d – Leucocratic...Buriánek, Kamil Kropáč F 15 a b Phonolite Rhyolite Na2O+K2O 10 Foidite Tephriphonolite Trachyte |  | | Report (issue) | | interpreted most of the volcanics of the formation as rhyolite lavas that were emplaced in a marine environment...R Tufts of the Capel Curig Volcanic Formation Rhyolite, intrusive Section 1 DEGANWY CONWY CAPELULO...Third Mer11ber � Fourth Member 22 21 20 10 Rhyolite 14 f'igure 2 Correlation of the tuff members...sedimentary intercalations. On Tryfan a thick rhyolite intrusion occurs within the lower inter calation...correlation can be made (p. 1 0) . In the Capel Curig district (Francis and Howells, 1973) the forr11ation , |  | Lawrie, K.C., Mernagh, Terrence P., Ryan, Christopher G., Achterbergh, Esme van, Black, Lance P. (2007) Chemical fingerprinting of hydrothermal zircons: an example from the Gidginbung high sulphidation Au-Ag-(Cu) deposit, New South Wales, Australia. Proceedings of the Geologists' Association, 118 (1) 37-46 doi:10.1016/s0016-7878(07)80045-9 | Journal (article/letter/editorial) | | et al., 1993) and in hydrothermal veins within rhyolite domes (Johnson & McIntyre, 1986). Zr mobility...geological map of the West WyalongTemora -Adelong district in New South Wales, Australia . similar REE patterns...suggest that the breccia s formed in a high-energy, suba queo us enviro nment, with clast s re-sedimented...high-sulfidation Cu-Au mineralization in the Nansatsu district, Japan. Economic Geology, 89, 1-30. de Hoog, J...volcanic subsidence in the 45 Custer graben, Custer County, Idaho. Journalo[Geochemical Exploration, 25, 247-248 |  | | Report (issue) | | . _.... ____ ...... _... ___ .............. . Rhyolite ............ __ .. _..................... -.-.... .. _... _________ ·___________ ...... . 124 Rhyolite ..................... __ -_. ___ . ____ ... __....... _.. _... __ : . ·- ... ___ ... ___ _ 134 Rhyolite .... . ...... _.. _. ___ ....... _______ ........... .... ......... ........ ·.... . 141 Cherry Hill and Shands ....................... ...............____________ .. _................... . American Hill ... _.. _-.... ___ .. ____ . __ .. _. ________________ |  | | Journal (article/letter/editorial) | | the entire spectrum from basalt to high-silica rhyolite and occurs as two units: a dark-coloured unit...light-coloured unit encompassing dacite-rhyodacite-rhyolite. The latter unit is made up largely of ash flow...profiles are consistent with a fractionated basalt to rhyolite calc-alkaline magma series. It is a typical calc-alkaline...rocks include porphyries of andesite, dacite and rhyolite, as well as tuffs and moderately to highly welded...California, San Diego, 1979) for some Dokhan andesite-rhyolite rocks near Qena-Safaga road. Ressetar & Monrad |  | | Journal (article/letter/editorial) | | ................ (a) General Structure of the District. (b) Detailed Description of the Succession. III...only roads within the district mapped. North of the Llyn Gwernan Valley a smaller hill-range, or rather a...Series). M v attention was first drawn to this district, as a member of a field-class conducted by Prof...History of Previous Research. The Cader Idris district has long been regarded as one of the :areas in...Arenig epoch, until finally there were flows of rhyolite similar in character to the Bala rhyolites of |
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