 | | Report (issue) | | Gold, base-metal, and related deposits of North Carolina 1011 by Gwendolyn W. Luttrell 12 U.S. Geological... Gold, base-metal, and related deposits of North Carolina Abstract Gold, silver, copper, lead, zinc,...barite, and rare-earths have been mined in North Carolina. Gold, with by-product silver, occurs in veins...along the borders of a granite body in Halifax 18 County. 19 and Vanoe Counties. 20- Tungsten minerals...minerals occur with copper sulfide ores in Cabarrus Barite occurs in quartz veins and associated with sulfide |  | | Report (edition) | | Information Circular GOLD RESOURCES OF NORTH CAROLINA by P. A. Carpenter, D oc ms C% M:*L Raleigh...for the general welfare of the citizens of North Carolina. The section conducts a number of basic and...Geological Survey Section, P.O. Box 27687, Raleigh, North Carolina 26711. Jeffrey C. Reid Chief Geologist Cover...3 Mining Methods and Recovery 3 Gold in North Carolina 5 History of Mining 5 Production 7 General...Deposits of North Carolina 12 Eastern Carolina Belt 12 Portis Mine 14 Other Mines 14 Carolina Slate |  | | Journal (article/letter/editorial) | | Copyright 0 1996 Elsevier Science Ltd Printed in the USA. All rights reserved 0016.7037/96 $15.00 + .OO PI1...Isotopic evidence for distinct crustal sources of North Sudbury Igneous Complex and South Range ores, ...associated silicate phases from nine mines on the North and South Ranges of the Sudbury Igneous Complex...magmatic origin for lead in the ore. Data from the North Range are also consistent with a magmatic origin...composition of country rocks adjacent to the South and North ranges, respectively. Furthermore, there is a close |  | | Journal (article/letter/editorial) | | Copyright © 1998 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/98 $19.00 1 .00 Pergamon...‘‘Isotopic evidence for distinct crustal sources of North and South Range ores, Sudbury Igneous Complex’’... 3600 Bay Area Boulevard, Houston, Texas 77058, USA Grieve (1994) interpret the Sublayer as a basal...compositions are uniform in the norite and quartz gabbro of the Main Mass of the SIC. An abrupt chemical...SIC. The lower units of the SIC, namely quartz gabbro, norite and Sublayer at these locations, however |  | | Journal (article/letter/editorial) | | Copyright © 1998 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/98 $19.00 1 .00 Pergamon...‘‘Isotopic evidence for distinct crustal sources of North and South Range ores, Sudbury Igneous Complex’’...within an ultramafic inclusion in the Creighton mine (sample C13) continue to yield an initial osmium...within error of massive Sublayer ores from this mine. Hence, these data continue to support an entirely...Table 1. Sm/Nd data for Sudbury Breccias. Sample North Range SB4.9 SB5.6 SB8.6 South Range SB2 SB3 SB5 |  | | Report (issue) | | IN NORTH CAROLINA INFORMATION CIRCULAR 29 DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES ...agencies for the general welfare of the dtizens of North Carolina. The Section conducts basic and applied research...Resources, at Post Office Box 27687, Raleigh, North Carolina 27611-7687, or call (919) 733-2423. Jeffrey...Chief Geologist GOLD NORTH CAROLINA IN . by P. Albert Carpenter III NORTH CAROLINA GEOLOGICAL SURVEY INFORMATION...INFORMATION CIRCULAR 29 STATE OF NORTH CAROLINA James B. Hunt, Jr., Governor DEPARTMENT OF ENVIRONMENT |  | | Journal (article/letter/editorial) | | 1977; Kuo and Crocket, 1979; Rao et al., 1984; Faggart et al., 1985; Walker et al., 1991 ). These studies...exclusivelycrustal melt resulting from meteorite impact (Faggart et al., 1985; Grieve et al., 1991; Dickin et al...rocks of the Superior Province are exposed to the north of the SIC. They comprise mixed tonalitic gneiss...margins of the SIC, and granitic rocks further to the north (Dressier, 1984). The metamorphosed rocks of the...footwall rocks which comprise the Levack Gneiss on the North Range and the Huronian Formation on the South Range |  | | Report (chapter) | | The total value of impact-related resources in North America is estimated at US$18 billion per year....terrestrial simple impact structure, Barringer, Arizona, USA. terraced, inwardly slumped and structurally complex...the pre-existing target rocks (Jahn et al. 1978; Faggart et al. 1985). In general, even Fig. 4. Approximately...Diameter (km) *Ames, USA *Avak, USA *Barringer, USA Beyenchime-Salaatin,Russia *Calvin, USA Boltysh, Ukraine...Canada *Chicxulub, Mexico *Crooked Creek, USA Decaturville, USA Ilyinets, Ukraine Kaluga, Russia Kara, Russia |  | | Journal (article/letter/editorial) | | becoming sul®de saturated. The Jinchuan deposit of north central China occurs within a 6 kmlong dyke-like...which is bordered by the Khatanga trough to the north and the Yenesei trough to the west. Their emplacement...only been intersected in the western part of the mine area, where it is seen to narrow upward and merge...to 5± 20 m of unmineralised olivine gabbro (Feeder Olivine Gabbro or FOG), which quickly passes downward...the Eastern Deeps observed so far, the Olivine Gabbro. A feeder sheet intersects the base of the Eastern |  | | Journal (article/letter/editorial) | | Copyright© 1996 ElsevierScienceLtd Printed in the USA. All rights reserved 0016-7037/96 $15.00 + .00 Pergamon...Institute, 3600 Bay Area Boulevard, Houston, TX 77058, USA 2Bundesanstalt ftir Geowissenschaften und Rohstoffe...being the impact melt and the norite and quartz gabbro beneath it representing an impact-triggered magmatic...of these rocks up to a distance of about 80 km north of the SIC (Dressier, 1984; Peredery and Morrison...to 30 km north of the Grenville Province. Gneissic rocks of the Superior Province to the north of the structure |  | Latypov, Rais, Morse, Tony, Robins, Brian, Wilson, Richard, Cawthorn, Grant, Tegner, Christian, Holness, Marian, Lesher, Charles, Barnes, Steve, O’Driscoll, Brian, Veksler, Ilya, Higgins, Michael, Wilson, Allan, Namur, Olivier, Chistyakova, Sofya, Naslund, Richard, Thy, Peter (2015) A fundamental dispute: A discussion of “On some fundamentals of igneous petrology” by Bruce D. Marsh, Contributions to Mineralogy and Petrology (2013) 166: 665–690. Contributions to Mineralogy and Petrology, 169 (2) doi:10.1007/s00410-015-1108-9 | Journal (article/letter/editorial) | | University of Massachusetts, 611 North Pleasant Street, Amherst, MA 01003‑9297, USA B. Robins Department of Earth...California, One Shields Avenue, Davis, CA 95616, USA S. Barnes CSIRO Earth Science and Resource Engineering...State University of New York, Binghamton, NY 13902, USA 13 20 Page 2 of 10 Introduction The principle...mafic norite is ignored, and the central quartz gabbro is dismissed as “a dense collection of materials...mineralogical variations from norite through quartz gabbro to 20 granophyre, a stratigraphic increase in |  | | Journal (article/letter/editorial) | | hosted by Archean gneisses of the Superior Province (North Range) cluster around 206 Pb/204Pb1850 14.8 and...closely matches the Pb isotope compositions of North Range Offset Dyke samples, whereas in the South Range...Office of the Principal, University of St Andrews, North Street, St Andrews, Fife KY16 9AJ, Scotland. 0016-7037/$...crustal origin (Dickin et al., 1992, 1996, 1999; Faggart et al., 1985; Hurst and Wetheril, Shallow impact:...continental crust Nd isotope evolution curve (Faggart et al., 1985), and a significant contribution of |  | | Journal (article/letter/editorial) | | Introduction RECENT studies of the felsic norite, quartz gabbro, and granophyre units, which constitute the main...upper crust in response to meteorite impact (e.g., Faggart et al., 1985; Golightly, 1994; Grieve, 1994). Another...entirely different sources. As first pointed out by Faggart et al. (1985) and Naldrett et al. (1986), both...composition 0361-0128/98/000/000-00 $6.00 between North and South Range offsets. Moreover, the quartz diorite...felsic norite, the quartz gabbro (also termed the “transition zone quartz gabbro”), and the granophyre (Naldrett |  | | Report (issue) | | ............................................18 North Range Deposits ...................................rocks], just north of the Grenville Province (Figure 1). It comprises norites, quartz gabbro, and granophyres...which are very widespread and occur up to 80 km north of the Igneous Complex. The footwall rocks are Archean...gneisses and granitic and mafic igneous rocks to the north, west, and east of the Complex, and metavolcanic...Dikes and the Contact Sublayer are composed of gabbro to quartz diorite and feature a multitude of inclusions |  | Morgan, John W., Walker, Richard J., Horan, Mary F., Beary, Ellyn S., Naldrett, Anthony J. (2002) 190Pt-186Os and 187Re-187Os systematics of the Sudbury Igneous Complex, Ontario. Geochimica et Cosmochimica Acta, 66 (2) 273-290 doi:10.1016/s0016-7037(01)00768-2 | Journal (article/letter/editorial) | | Copyright © 2002 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/02 $22.00 ⫹ .00 Pergamon...University of Maryland, College Park, Maryland, 20742, USA Department of Earth Resources, Colorado State University...University, Fort Collins, Colorado 80523, USA 3 Department of Terrestrial Magnetism, Carnegie Institution...20015, USA 4 National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA 5 Department...Sudbury Structure has been reported. At the Whistle mine S-poor olivine melanorite inclusions with high Ni |  | | Journal (article/letter/editorial) | | bottom) traditionally termed “granophyre,” “quartz gabbro,” “norite,” and “contact sublayer” (sulfide- and...following the IUGS system of nomenclature, quartz gabbro samples are in fact quartz monzogabbros, a few...composition of the Sudbury Igneous Complex, from North Range data, is granodioritic. Continuous and gradational...missing core 2400 Drill Core Locations Quartz Gabbro and Norite Transition Zone Onwatin and Chelmsford...Archean Metagranitic and Metavolcanic Rocks Quartz Gabbro Onaping Formation Huronian Supergroup (metasedimentary |  | | Journal (article/letter/editorial) | | strong Pb and Sr isotope contrasts between the North and South ranges of the Sudbury Igneous Complex...finer details of isotopic decoupling between the North and South ranges. In terms of mean Pb isotope compositions...confirm the previously established picture that North Range Main Mass rocks and associated Ni-Cu-PGE sulfide...sulfide in the Sudbury Igneous Complex. First, North Range sulfide ores and Main Mass silicates are more...(∆207Pb/204Pb), the North Range Main Mass ores range from +130 to +421 and North Range ores range from |  | Deutsch, A., Grieve, R.A.F., Avermann, M., Bischoff, L., Brockmeyer, P., Buhl, D., Lakomy, R., M�ller-Mohr, V., Ostermann, M., St�ffler, D. (1995) The Sudbury Structure (Ontario, Canada): a tectonically deformed multi-ring impact basin. Geologische Rundschau, 84 (4) doi:10.1007/bf00240561 | Journal (article/letter/editorial) | | east of the SIC, whereas the basement rocks to the north and west are granulite-facies Archean Levack Huronian...bordered by granite-greenstone lithologies. To the north, erosional remnants of the Huronian Supergroup are...Mass of SIC remained unclear. Nd isotope data by Faggart et al. 6. Basal Member of the Onaping Formation...(e.g. Cintala and Grieve 1994; Melosh 1989; the North Range of the SIC. Four types of breccia Schultz...Formation [~SlC E~ Sublayer SIC m Onapina Form. E~ FB-North Range E~ Levack Gneiss 100O -5 *E II "O o 0 |  | Dickin, A.P, Richardson, J.M, Crocket, J.H, McNutt, R.H, Peredery, W.V (1992) Osmium isotope evidence for a crustal origin of platinum group elements in the Sudbury nickel ore, Ontario, Canada. Geochimica et Cosmochimica Acta, 56 (9) 3531-3537 doi:10.1016/0016-7037(92)90396-z | Journal (article/letter/editorial) | | International Nickel Company’s (INCO) Creighton Mine, Sudbury, were analysed for osmium isotope ratios...nonfractionation-corrected ) data from our study of the Creighton mine were presented by RICHARDSONet al. ( 1990). Subsequently...isotope analyses of sulphide ores from the Creighton Mine, as well as from crustal units in the vicinity of...the silicate rocks of the SIC were presented by FAGGART et al. ( 1985 ) and NALDRETTet al. ( 1986). Both...EXPERIMENTAL Sample Selection INCO’s Creighton Mine has yielded over 150 million tons of NiCu-PGE ore |  | Kawohl, Alexander, Frimmel, Hartwig E., Bite, Andrejs, Whymark, Wesley, Debaille, Vinciane (2019) Very distant Sudbury impact dykes revealed by drilling the Temagami geophysical anomaly. Precambrian Research, 324. 220-235 doi:10.1016/j.precamres.2019.02.014 | Journal (article/letter/editorial) | | of the largest unexplained magnetic features in North America. It is similar in size and shape to the...which is one of the largest magnetic anomalies in North America, covering an area of 1,200 km2 and having...widespread mafic sills of the 2.22 Ga Nipissing Gabbro Suite (Corfu & Andrews 1986; Noble & Lightfoot...Ma to 1238 Ma (Dudas et al. 1994). The Nipissing Gabbro (also referred to as Nipissing Diabase) is of specific...Major rock type is a hypersthene-bearing tholeiitic gabbro, but highly differentiated varieties in the form |  | Hao, Libo, Zhao, Xinyun, de Boorder, Hugo, Lu, Jilong, Zhao, Yuyan, Wei, Qiaoqiao (2014) Origin of PGE depletion of Triassic magmatic Cu–Ni sulfide deposits in the central-southern area of Jilin province, NE China. Ore Geology Reviews, 63. 226-237 doi:10.1016/j.oregeorev.2014.05.017 | Journal (article/letter/editorial) | | Orogenic Belt, with the Jiamusi Massif to the north and the North China Craton (NCC) to the south (Wu et al...major rock types of the ore-bearing intrusions are gabbro, pyroxenite, pyroxene peridotite, olivine pyroxenite...pyroxenite, pyroxene peridotite, pyroxenite, and gabbro. The boundaries between rock types are gradational...consists of pyroxene peridotite, pyroxenite, and gabbro. The boundaries between rock types are gradational... The intrusion consists of olivine pyroxenite, gabbro and amphibole pyroxenite which contains most of |  | | Journal (article/letter/editorial) | | (1996) © Meteoritical Society, 1996. Printed in USA. Impact melt dikes in the Sudbury multi-ring basin...Precambrian basement rocks. Neodymium isotope data (Faggart et ai., 1985) indicated for the first time that...(Abitibi Subprovince) of the Superior Province in the north (Fig. I, upper; Dressler, 1984). Proceeding inwards...21 Ma with a highly negative initial ENd value (Faggart et al., 1985). The age of the Sudbury event is...the North Range (Deutsch et al., 1989), in pseudotachylites of the Sudbury Breccia -29 km north of the |  | | Journal (article/letter/editorial) | | 1111/maps.12497 The Basal Onaping Intrusion in the North Range: Roof rocks of the Sudbury Igneous Complex...data from two drill cores and field data from the North Range of the Sudbury structure, which suggests that...(Deutsch and Grieve 1994) and can be divided into North, South, and East Ranges. At the present exposure... metavolcanic and metasedimentary rocks in the north and west (Dressler 1984). The SIC is what remains...impact melt sheet at the Sudbury impact structure (Faggart et al. 1985; Grieve et al. 1991; Dickin et al. |  | | Journal (article/letter/editorial) | | broken up at ~ 2.15 Ga after intrusion of widespread gabbro sheets and dykes including Nipissing diabase. The...silica in quartz arenites. Intrusions ofNipissing gabbro near Sudbury contain minor Ni-Cu mineralization...its sedimentary iron and native copper ores, the north shore of Lake Huron for its paleoplacer uranium...derived mainly from the Archean terrane to the north. Deposition of the Huronian Supergroup (Fig. 2 )...AND K.D. CARD sic volcanics and emplacement of gabbro-anorthosite intrusions between 2496 and 2450 Ma |  | Darling, J.R., Hawkesworth, C.J., Lightfoot, P.C., Storey, C.D., Tremblay, E. (2010) Isotopic heterogeneity in the Sudbury impact melt sheet. Earth and Planetary Science Letters, 289 (3) 347-356 doi:10.1016/j.epsl.2009.11.023 | Journal (article/letter/editorial) | | Principal, University of St Andrews, College Gate, North Street, St Andrews, Fife KY16 9AJ, UK. 0012-821X/$...the study area is outlined. Footwall rocks to the North Range of the complex are Archean Superior Province...Southern Province to the South Range. Significant north–south shortening has occurred along shear zones...typically consists of quartz monzogabbro to quartz gabbro, whilst the Upper Unit is granitic. Although highly...melting of the crust (Hurst and Wetheril, 1974; Faggart et al., 1985; Walker et al., 1991; Dickin et al |
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