 | Chakravarti, R., Singh, S., Venkatesh, A. S., Patel, K., Sahoo, P. R. (2018) A Modified Placer Origin for Refractory Gold Mineralization Within the Archean Radioactive Quartz-Pebble Conglomerates from the Eastern Part of the Singhbhum Craton, India. Economic Geology, 113 (3) 579-596 doi:10.5382/econgeo.2018.4563 | Journal (article/letter/editorial) | | Mineralization Within the Archean Radioactive Quartz-Pebble Conglomerates from the Eastern Part of the Singhbhum...Mines), Dhanbad 826004, India Abstract Archean quartz-pebble conglomerates are one of the most extensively...prospects of economic grades. Similar quartz-pebble conglomerate horizons have been delineated within...basin within the Singhbhum-Orissa craton. The quartz-pebble conglomerates reported in this work are predominantly...broad terms, the origin of Au within these quartz-pebble conglomerates resembles the modified placer |  | | Report (volume) | | copper-arsenic-antimony (22a) Gold-bearing skarns (?) Epithermal quartz-alunite gold (25e) Other hydrothermal deposits:...(27a) Kuroko massive sulfide (28a) Low-sulfide gold-quartz veins (36a) Polymetallic veins (22c) Residual or...greenstone belts Residual or placer deposits: *Quartz-pebble conglomerate uranium-gold (29a) Magmatic deposits:...descriptive models were based on a single deposit or district and therefore lacked grade-tonnage distributions...........|........................... Quartz-pebble conglomerate gold-uranium deposits............... |  | | Report (issue) | | Laramie Mountains, Albany and Platte Counties, Wyoming By George L» Snyder Open File Report 84- 358^A...Laramie Mountains, Albany and Platte Counties, Wyoming By George L. Snyder This Open-File Report shows...across the central Laramie Mountains of eastern Wyoming. Although the geologic maps are detailed, the mapping...1/2' quadrangle, Wyoming. (AS) C. Geologic map of Dodge Ranch 7 1/2' quadrangle, Wyoming. (DR) D. Geologic...quadrangle, Wyoming. (BCP) E. Geologic map of Moonshine Peak 7 1/2' quadrangle, Wyoming. (MP) F. Geologic |  | | Report (issue) | | IAEA-TECDOC-427 URANIUM DEPOSITS IN PROTEROZOIC QUARTZ-PEBBLE CONGLOMERATES REPORT OF THE WORKING GROUP ON...VIENNA, 1987 URANIUM DEPOSITS IN PROTEROZOIC QUARTZ-PEBBLE CONGLOMERATES IAEA, VIENNA, 1987 IAEA-TECDOC-427...IAEA-TEC-DOC-361 1985 Uranium Deposits in Proterozoic Quartz-Pebble Conglomerates - Desmond Pretorius - (This volume)...project on Uranium Deposits in Proterozoic Quartz Pebble-Conglomerates, and to his colleagues and their...STATES OF AMERICA Favorability of Precambrian quartz-pebble conglomerates in the United States as uranium |  | Snyder, George L., Hausel, W. Dan, Klein, Terry L., Houston, Robert S., Graff, Paul J. (1989) Precambrian Rocks and Mineralization, Southern Wyoming Province - Hartville Uplift to Copper Mountain Area, Wyoming July 19-25, 1989. Field Trip Guidebook T332. American Geophysical Union | Report (issue) | | Mineralization, Southern Wyoming Province Hartville Uplift to Copper Mountain Area, Wyoming July t 9-25, t 989...Ridge, Bull Camp Peak 1 1/2-minute quadrangle, Wyoming. Leaders: George L. Snyder U.S. Geological Survey...Hausel Deputy Directory Theological Survey of Wyoming Box 3008, University Station Laramie, WY 82071...The University of Wyoming Laramie, WY 82071 Paul J. Graff Research Associates of Wyoming 2220 East 17th...PRECAMBRIAN ROCKS AND MINERALIZATION, SOUTHERN WYOMING PROVINCE by George L. Snyder 1, W. Dan Hausel2 |  | | Report (issue) | | Index map of the Placerville area, San Miguel County, Colorado. . 7 2. Geologic map and sections of...of part of the Robinson claims. San Miguel County, Colorado............... *n envelope 3. Geologic map...section of part of the Weatherly property, San Miguel County, Colorado. ............. . In envelope 4. Geologic...map of main adit, Weatherly property, San Miguel County, Colorado ................... 3 9 ILLUSTRATIONS--Continued...from the Robinson pioperty (shaft A), San Miguel County, Colorado. .... 19 2. Photomicrographs of polished |  | | Report (issue) | | PROTEROZOIC QUARTZITE AND CONGLOMERATE IN CENTRAL IDAHO FOR QUARTZ-PEBBLE CONGLOMERATE URANIUM DEPOSITS By......1 Geologic setting of uraniferous quartz-pebble conglomerate.........! Purpose of 1nvestigati on....area..........................12 Quartzite and conglomerate of the Lowell-Elk City area................12...sandstones that are possible hosts of Precambrian quartz-pebble-type (placer-type) uranium deposits...........evaluation of recognition criteria for Precambrian quartz-pebble-type uranium deposits in the Lowell-Elk City |  | Milesi, J.P, Ledru, P, Marcoux, E, Mougeot, R, Johan, V, Lerouge, C, Sabaté, P, Bailly, L, Respaut, J.P, Skipwith, P (2002) The Jacobina Paleoproterozoic gold-bearing conglomerates, Bahia, Brazil: a “hydrothermal shear-reservoir” model. Ore Geology Reviews, 19 (1) 95-136 doi:10.1016/s0169-1368(01)00038-5 | Journal (article/letter/editorial) | | indicated by a widespread alteration with gold-bearing quartz lodes, conglomerates showing a sulphide – gold...existence of a gold preconcentration within the quartz – pebble conglomerates, is supported by the lithological...pebbles (e.g. cataclastic quartz, quartz – pyrite mylonite and rare fuchsite-bearing rocks) that had been...for postsedimentary mesothermal quartz – tourmaline – muscovite/fuchsite lodes, which constitute a possible...chromite, Cr – rutile, linnaeite, Cr – tourmaline and fuchsite) and euhedral pyrite that crystallized over andalusite |  | | Journal (article/letter/editorial) | | VOL.42,JT]LY-AUGUST 1957 FUCHSITE FROM A SILURIAN (?) QUARTZ CONGLOMERATE, ACWORTHTOWNSHIP,NEW HAMPSHIRE...emerald-greenchromian muscovite fuchsite was discovered in the Clough qtrartz conglomerate (of Lower Silurian (...Acworth-Langdon townline with State Highway 123. The fuchsite is in flakes up to 1 mm. in diameter and, in the...respectively) in the granular qtrartz matrix of a quartz-pebble conglomerate. Fine-grained chromite and qlrartz are...Despite the fact that the TiOz in the Acworth fuchsite may be extraneous, such an impurity has not actually |  | Ledru, P., Mile´si, J.P., Johan, V., Sabate´, P., Maluski, H. (1997) Foreland basins and gold-bearing conglomerates: a new model for the Jacobina Basin (Sa˜o Francisco province, Brazil) Precambrian Research, 86 (3) 155-176 doi:10.1016/s0301-9268(97)00048-x | Journal (article/letter/editorial) | | breccias and early dyke swarms. In this context the conglomerate layers found in the basin formations correspond...alteration within mineralized conglomerates (sulphide, fuchsite, tourmaline, chromite, rutile), leaching of ultrabasic...basins. © 1997 Elsevier Science B.V. Keywords: Conglomerate; foreland basin; gold; Palaeoproterozoic *...basement of the Gavi~o Block and comprising: • A quartz-muscovite schist formation with retrograde metamorphosed....... M.-. °e,,,.. ........ .0o,. I ~ ° I conglomerate ~ ower F. . . . :~ , I , ff S.... doMeio |  | | Journal (article/letter/editorial) | | VOL.42,JT]LY-AUGUST 1957 FUCHSITE FROM A SILURIAN (?) QUARTZ CONGLOMERATE, ACWORTHTOWNSHIP,NEW HAMPSHIRE...emerald-greenchromian muscovite fuchsite was discovered in the Clough qtrartz conglomerate (of Lower Silurian (...Acworth-Langdon townline with State Highway 123. The fuchsite is in flakes up to 1 mm. in diameter and, in the...respectively) in the granular qtrartz matrix of a quartz-pebble conglomerate. Fine-grained chromite and qlrartz are |  | | Journal (article/letter/editorial) | | and hydroxides locally reacted with the organic carbon to produce Fe-carbonates. Primary carbonates were...availability of dissolved CO2, 02, particulate carbon and clastic input in the different parts of the...unconformably overlies basement with a quartz pebble conglomerate (QPC), quartzites and/or arkoses which...1981; Radhakrishna and Naqvi, 1986). A quartz pebble conglomerate forms the basal unit of the Dharwar Supergroup...unconformably rests on Peninsular gneisses. This quartz pebble conglomerate is followed by a succession of quartzites |  | | Journal (article/letter/editorial) | | indicate either diachroneity in the cessation of quartz arenite deposition across the realm of the Central...Superior [4], Zimbabwe [5], Yilgarn [6,7], and Wyoming cratons [8]. Hence, a detailed study of the CSCG...continue development of provenance analysis of quartz-rich Archean metasedimentary rocks, in particular...typically consists of a well-rounded quartz pebble conglomerate with a fuchsitic quartzite matrix (Fig...primarily of quartz, and for which structural and textural evidence suggests derivation from a quartz are- |  | | Report (chapter) | | Rogers 1987). These workers studied the Talya conglomerate of the Chitradurga schist belt and observed...(metapelites), calc-silicates, metavolcanics and fuchsite quartzite. However, the status of the Javanahalli...underlying gneisses. These supermature basal quartz pebble conglomerates indicate deposition of the Dharwar...belt consists of amphibolite, fuchsite quartzite, metabasalts, conglomerate, dolomitic limestone, phyllite...north-central and northwestern parts are made up of conglomerate, phyllite and various types of volcanics, BIFs |  | Ishwar-Kumar, C., Windley, B.F., Horie, K., Kato, T., Hokada, T., Itaya, T., Yagi, K., Gouzu, C., Sajeev, K. (2013) A Rodinian suture in western India: New insights on India-Madagascar correlations. Precambrian Research, 236. 227-251 doi:10.1016/j.precamres.2013.07.023 | Journal (article/letter/editorial) | | garnet-biotite, fuchsitehaematite, chlorite-quartz, quartz-phengite schists, biotite augen gneiss, marble...estimations and the high-Si phengite composition of quartz-phengite schist suggest a near-peak condition of...decompression. The detrital SHRIMP U–Pb zircon ages from quartz-phengite schist give four age populations ranging...ranging from 3280 to 2993 Ma. Phengite from quartz-phengite schist and biotite from garnet-biotite schist...Electron microprobe-CHIME ages of in situ zircons in quartz-phengite schist (ca. 3750 Ma and ca. 1697 Ma) are |  | Haugaard, Rasmus, Ootes, Luke, Creaser, Robert A., Konhauser, Kurt O. (2016) The nature of Mesoarchaean seawater and continental weathering in 2.85 Ga banded iron formation, Slave craton, NW Canada. Geochimica et Cosmochimica Acta, 194. 34-56 doi:10.1016/j.gca.2016.08.020 | Journal (article/letter/editorial) | | facies, such as fuchsitic quartzite and pebble-to-cobble conglomerate, that confirm a near-shore depositional...remarkably uniform, comprising mostly microcrystalline quartz (chert), magnetite, hematite, and Ferich silicate...and shoreline-type deposits, such as quartz pebble-conglomerate and fuchsitic quartzite (Padgham and...components are fuchsitic quartzite ± quartz-pebble conglomerate ± semipelite ± BIF ± rare ultramafic...white-green weathered, metamorphosed and recrystallized quartz arenite (as used in Mueller and Pickett, 2005; |  | Reddy, K. Mahender, Mishra, Niharika, Simi, T. S., Rath, Sonali, Paul, Arijit, Sari, S. (2023) Special Publication Vol. 1-I (77), A Manual of the Geology of India : Precambrian Part I, Southern part of the peninsula (5th ed.) Geological Survey of India | Report (edition) | | follows: 1. Peninsular Region which comprises the Hill Ranges and the Plateaus. 2. Northern Himalayan Mountain...southeast. 1) Peninsular Region A) Hill Ranges The most important Hill ranges of the Peninsula are: 1.The...The Western Ghats (Sahyadri) is a hill range that starts near Sonagadh in Gujarat south of Tapti river...biological diversity in the world. 4.The Vindhya Hill Range (inclusive of Bhander and Kaimur ranges) lies...Ghats are a discontinuous hill ranges along the east coast of India. These hill ranges extend from Odisha |  | | Journal (volume) | | sea. Clay was probably carried into the sea with quartz sand, separated there by weve and current action...consists of a lower Segozerian section of quartzites, quartz conglomerates, and diabases and an upper Onegian...Qtzite [] Qnartzite ~ § Sehist / . 00° ~ Conglomerate , m Granitie gneiss basement ~ 200 100...N 20° W. Fig. 4. Contact of Sariolian basal conglomerate and granitic gneiss basement at Kiihtelysvaara...zone appears dark and eroded, and overlying conglomerate (nearly vertical) is at the bottom left. 14 |  | | Report (issue) | | replacement 6.1 6.2 6.3 6.4 6.5 6.6 6.7 Quartz pebble conglomerate Au-U-Os-Ir Diamond placer (and pipes)...basalt-andesite-rhyolite (island-arc); basalt-limestone; conglomerate-sandstone-tuff-gypsum. Textures Age Range Cambrian...lena+bornite+ tetrahedrite+cobaltite+cubanite. Quartz, carbonate, albite, white mica, chlorite, amphibole...coronadite, Fe oxides, manganocalcite, calcite, quartz chalcedony, barite, zeolites. Texture/Structure...ite+wadj^anganite^rhodonitejfbraunite+calcite+ quartz+barite+f luorite^jasperj4|manganocalcite^yrite |  | | Journal (article/letter/editorial) | | Klein, 1990; Derry and Jacobsen, 1990). Oxygen, carbon and sulphur isotopic data on the Archaean BIF and... These BIFs are associated with QPC (quartz pebble conglomerate), current bedded-ripple marked quartzites...FERRUGINOUS o[i fie ) VOLCANICS QUARTZITES AND O,TZ. PEBBLE BASAL CONGLOMERATES UNCONFORMITY ,dlV Q. s) ...IC GNEISSES (3.5 Ga) HIGH AI- Mg -- SEDIMENTS FUCHSITE QUARTZITES BANDED IRON FORMATION (BIF 1) MAFIC...1988. ) LEGEND ~ Conglomerate Fuchsite Quor Mongoniferous Greywacke Quartz and Ar kosic Arenit |  | | Book | | Solutions: Veindikes / 205 The Ore Magmas. McGraw-Hill, New York, 1923, pp. 1-3 9-lB SPURR,J.E.:TheOriginofFissureVeins...:TheOriginofFissureVeins / 207 The Ore Magmas. McGraw-Hill, New York, 1923, pp. 707-709 9-2 FARM IN, R.: Host-Rock...Igneous Rocks / 235 Gold Deposits o/the World, McGraw-Hill, New York, 1937, pp. 12-37 10-2 MOORE, E. S.: Genetic... 315 318 CHAPTER 14: GOLD DEPOSITS-QUARTZ-PEBBLE CONGLOMERATE AND QUARTZITE TYPE 335 The Witwatersrand...Supergene Transport of Gold, Calhoun Mine, Lumpkin County, Georgia I 581 Econ. Geology 66:178 (1971) References |  | | Report (chapter) | | profound unconformity represented by a quartz pebble conglomerate; this supergroup has been divided into...of mafic and ultramafic rocks interbedded with fuchsite quartzite and currentbedded quartsite (Table 1)...by the Deogiri formation which begins with a conglomerate of unknown origin followed by current-bedded...Stromototitic F'e-Mn Carbonate 4 Quartzite and Quartz pebbte Conglomerate 3 Metobosolts and Amphibolites 2 Metapyroxenite...Pyroclastic breccia Volcanic agglomerate Conglomerate Metabasalt Fuchsite quartzite Greywackes and argillite |  | | Journal (article/letter/editorial) | | northeastward (see Fig. 2). Ultramafic rocks, fuchsite-bearing quartzite and mica schists, persistent...carbonaceous phyllite, quartzite and deformed conglomerate are the major litho-units of the IOG. The rocks...tectonic movements in the area. Basal quartz pebble conglomerate with few chert clasts, wave-rippled sandstone...of white and black chert pebbles in the basal conglomerate of the western sedimentary succession suggests...and Lilam sections, respectively (Fig. 2A). The pebble composition of the conglomerates is represented |  | | Journal (article/letter/editorial) | | deposits are hosted within, or in close proximity to, quartz veins that are syn- to late-tectonic, and to a...associated with gold. Non-metallic minerals are mainly quartz and carbonates Žankerite, calcite, siderite., associated...minor chlorite, epidote, albite, muscovite and fuchsite. Silica, carbonate, propylitic and potassic alteration...for the gold-bearing veins Že.g. Kilometro 88 district, Gray et al., 1993.. In Guyana, the Barama–Mazaruni...not been mapped. However, the thick Ž) 1.5 km. conglomerate–graywacke succession and associated mafic volcanic |  | | Journal (article/letter/editorial) | | volcanics with rare felsic volcanics, interlayered fuchsite bearing quartzites/schists and barite lenses,...Group. The Bababudan Group comprises oligomictic conglomerate (QPC), cross-bedded mature sandstones, mafic...sedimentary succession which starts with a polymictic conglomerate and grades to greywacke–pelite alternations...the Bababudan sedimentary succession; namely, conglomerate–sandstone facies association and sandstone–mudstone... The conglomerate–sandstone facies association comprises oligomictic quartz-pebble conglomerate facies |
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