 | | Report (issue) | | Pleaoc teturn this publication to the Virginia Geologieal Survcy whcn you havc no further uce for it...COMMONWEALTH OF VIRGINIA STATE COMMISSTON ON CONSERVATION AND DEVELOPMENT VIRGINIA GEOLOGICAL SURVEY...Deposits of Virginra BY ARTHUR A. PEGAU UNIVERSITY, VIRGINIA 1932 COMMONWEALTH, OF VTRGINIA STATE COMMISSION...COMMISSION ON CONSERVATION AND DEVELOPMENT VIRGINIA GEOLOGICAL SURVEY ARTHUR BEVAN, State Geologist Bulletin...33 Pegmatite Deposits of Virginia BY ARTHUR A. PEGAU UNIVERSITY, VIRGINIA 1932 RICHMOND: DrvrsroN |  | | Report (issue) | | pegmatite in granite, Short Tom Smith mine, Rockingham County, N. C______ ____ ____________________ ...between pegmatite and granite, E. R. Self mine, Gaston County, N. C____________________ 6. Sinuous discordant...wall, Knight mine, Rockingham County, N. C- ~ -7. Sharp hanging-wall contact, Knight mine ______ _______________...of granite underlain by schist, Hawkins mine, Stokes County, N. C _ _ _ _ _ _ __ _ _ __ _ _ _ _ _ 9....and other units in the Big Bess pegmatite, Gaston County, N. C _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ |  | | Report (issue) | | Brittle-Deformation History of Eocambrian Rocks (Ridgeway Gold Mine, South Carolina), Carolina Terrane Mervin...Bartholomew, Amy E. Whitaker, Chris A Barker 17 The Ridgeway Gold Deposits: A Window to the Evolution of a...Barnett 25 A Field Guide to the Geology of the Ridgeway-Camden Area, South Carolina Piedmont Donald T...Photo: Overview of the North Pit at Ridgeway Gold Mine (Kennecott-Ridgeway Mining Company). CAROLINA GEOLOGICAL...REGIONAL RELATIONSHIPS The oldest rocks in the Ridgeway–Camden area are metaplutonic, metavolcanic, and |  | | Journal (article/letter/editorial) | | VIRGINIA MINERAL LOCAL INDEX Although perhaps best known for its turquoise crystals, apophyllite on...kyanite, Virginia has, in fact, over 150 mineral species. and D. A L L E N P E N I C K , JR. Virginia Division...Mineral Resources P. O. Box 3667 Charlottesville, Virginia 22903 T H I S V I R G I N I A M I N E R A L L...world-wide locality index. The localities are listed by county, followed by a listing of the most prominent minerals...source of information in this Virginia index was Minerals of Virginia (1970) by R . V . Dietrich. A l |  | | Report (issue) | | Electric Co.'s mine; Andrew T. Orr, of the Mica Products Co.; C. W. Bryant, of the Standard mine; L. R. Brown...general information on a number of mines in Grafton County and extended other kindnesses; M. M. Kilton, of...Howard, of East Alstead; in Virginia by P. Lippert and Capt. McCray, of the Ridgeway Mica Co., and several...large sheet mica. The average price paid for run of mine mica, not split or sorted, ranges from $50 to $200...places, however, a variety of plagioclase, either albite or oligoclase, makes up part or all of the feldspar |  | | Journal (issue) | | February 1987 No.1 VIRGINIA MINERAL LOCALITY INDEX D. Allen Penick, Jr. This Virginia mineral locality...world-wide locality index The localities are listed by county, followed by a listing of the most prominent minerals...source of information in this Virginia index was Minerals of Virginia (1970) by R. V. Dietrich. Although...of the index. Some of the famous localities in Virginia, such Updated from Rocks and Minerals, Vol. 60...pegmatite in Amelia County and the Lynch Station locality (turquoise crystals) in Campbell County, are now closed |  | | Journal (article/letter/editorial) | | muscovites are from pegmatites, nine from San Diego County, California. 2 Schaller, W. T., and Stevens, R...abundant almandine garnet. A'B.C' gem mine, Ramona, San Diego County, Calif. 3. Medium grained, resembling...with albitized pegmatite. Victor gem mine, Rincon, San Diego County, Calif. 5. Plumose muscovite in microcline...dike (below the Stewart mine), at east base of Stewart Hill,, Pala, San Diego County, Calif. Although occurring...removed. Ed. Fletcher gem mine, north side of Stewart Hill, Pala, San Diego County, Calif. 7. Sheets of muscovite |  | | Journal (article/letter/editorial) | | Economic Geology Vol. 98, 2003, pp. 1637–1666 The Ridgeway Gold-Copper Deposit: A High-Grade Alkalic Porphyry...79, Hobart, Tasmania 7001, Australia Abstract Ridgeway is a high-grade gold-copper porphyry deposit (54...volcanic arc. Alteration and mineralization at Ridgeway are zoned around a vertically attenuated intrusive...quartz-orthoclase veins. Propylitic and sodic (albite-pyrite) alteration assemblages are peripheral to...inclusions, suggests that the mineralizing fluids at Ridgeway were nonboiling hypersaline brines that exsolved |  | | Report (issue) | | ................... 1 The Haile Gold Mine, South Carolina, USA James M. Berry, Reid M. Mobley, Kenneth............................ 44 STOP 5: Haile Gold Mine Core and Poster Presentation (Lunch) .............Figure 8. Geologic map of the Winnsboro Mills-Ridgeway-Longtown region. Modified from Secor and others...October 24-25, 2015 Figure 9. Winnsboro Mills-Ridgeway-Longtown Cross sections. Modified from Secor and...meta-granites [the Longtown metagranite in the Ridgeway and Longtown quadrangles (Figure 8) and the Simpson |  | | Report (issue) | | the cover—Turquois crystals from Lynch Station, Virginia; x ca.; pho tograph by Neal Ycdlin; color plates...C. A. Michael. COLD NUGGET FROM SPOTSYLVANIA COUNTY: Longest dimension approximately 13 cm., photograph...of Virginia R. V. DIETRICH* Professor of Geology and Associate Dean of Arts & Sciences, Virginia Polytechnic...Polytechnic Institute Research Division Bulletin 47 Virginia Polytechnic Institute, Blacksburg, Va. 24061 *... © R. V. Dietrich and the Research Division of Virginia Polytechnic Institute, 1970 Printed and bound |  | | Journal (article/letter/editorial) | | The district comprises four porphyry deposits (Ridgeway, Cadia Quarry, Cadia Hill, and Cadia East) and...centers. Sulfide mineralization is strongly zoned at Ridgeway and Cadia East, with Editorial handling: F. Bierlein...isotopic zonation patterns have been identified at Ridgeway, Cadia Hill, and Cadia East. The deposit cores...hosts four alkalic porphyry gold–copper deposits (Ridgeway, Cadia Quarry, Cadia Hill, and Cadia East; Fig...combined total of more than 980 tonnes of gold. The Ridgeway deposit has an exceptional average gold grade |  | Cooke, D. R., Wilson, A. J., House, M. J., Wolfe, R. C., Walshe, J. L., Lickfold, V., Crawford, A. J. (2007) Alkalic porphyry Au – Cu and associated mineral deposits of the Ordovician to Early Silurian Macquarie Arc, New South Wales. Australian Journal of Earth Sciences, 54 (2) 445-463 doi:10.1080/08120090601146771 | Journal (article/letter/editorial) | | Earth (Figure 1) (Cooke et al. 2005). Furthermore, Ridgeway and Cadia East (underground) are two of the world’s...(1998) Wolfe (2001) Jensen and Barton (2000) m, mine; p, prospect. In the last ten years, only the recent...defined late magmatic assemblage of magnetite, albite, quartz and minor bornite and chalcopyrite in the...Low-sulfidation gold deposits Endeavour 42 (E42) is the newest mine in the Macquarie Arc, having recently been brought...are associated with composite intrusive pipes (Ridgeway: Harper 2000; Wilson et al. 2003) and dyke swarms |  | Holliday, John, Wilson, Alan, Blevin, Philip, Tedder, Ian, Dunham, Paul, Pfitzner, Michael (2002) Porphyry gold-copper mineralisation in the Cadia district, eastern Lachlan Fold Belt, New South Wales, and its relationship to shoshonitic magmatism. Mineralium Deposita, 37 (1) 100-116 doi:10.1007/s00126-001-0233-8 | Journal (article/letter/editorial) | | Discovered in 1992 by Newcrest Mining Limited, pre-mine resources in the district were in excess of 585...principal porphyry deposits (Cadia Hill, Cadia Ridgeway, Cadia East/Cadia Far East and Cadia Quarry) as...Canberra, ACT 0200, Australia propylitic and silica–albite assemblages. Petrological studies and major and...Cadia Ridgeway (Holliday et al. 1999) and Cadia Far East in 1996 (Tedder et al. 2001). Pre-mine resources...of copper. Cadia Ridgeway is being developed as an underground sub-level cave mine with planned production |  | | Report (issue) | | Arrington Mine Carolina Slate 'Belt 25 27 2 Gold Hill Mine 28 Placer ~lXlsits 2 Howie Mine 29 !me...me Del"'sits 2 Reed Mine 31 S<>urces and Prtxluction 5 Silver Hill Mine 31 World Sources and...Production 5 Phoenix Mine 33 United States Sources and Production 5 Hoover Hill Mine 33 Mineralogy and...Gardner Hill Mine 33 Uses 7 Fentress Mine 34 Prices 8 Mining Methc:xis 9 Rudisil Mine 34 OJ:>en-Pit...OJ:>en-Pit Mining 9 St. Catherine Mine 35 Underground Mining 9 Capps Mine 35 9 Kings Mountain Belt |  | Moore, Joseph, Adams, Michael, Allis, Richard, Lutz, Susan, Rauzi, Steven (2005) Mineralogical and geochemical consequences of the long-term presence of CO2 in natural reservoirs: An example from the Springerville–St. Johns Field, Arizona, and New Mexico, U.S.A. Chemical Geology, 217 (3) 365-385 doi:10.1016/j.chemgeo.2004.12.019 | Journal (article/letter/editorial) | | Anhydrite beds and mudstones act as local seals. The Ridgeway Arizona Oil Corp. is presently developing the...(T. White, personal communication, 2003). The Ridgeway Arizona Oil Corp. cut 210 m of conventional core...Older deposits southeast of Lyman Lake and near Ridgeway Arizona Oil Corp. well 1 Plateau Cattle are found...Power Co. data). The scatter in pressures from the Ridgeway Arizona Oil Corp. wells is consistent with localized...analyses provided by Tucson Electric Power Co. and Ridgeway Arizona Oil Corp. and analyses of waters collected |  | | Journal (article/letter/editorial) | | Even the common minerals of microcline, bladed albite, and smoky quartz are enhanced by a purple or green...near Red Stone quarry, Conway, Carroll County, New Hampshire. Henry Minot specimen and photo. Mark Ivan...Teller and Park counties, CO, USA Crystal Park–Bear Creek, El Paso County, CO, USA Pikes Peak Granite NYF... 3 Mount Antero and Mount White, Chaffee County, CO, USA Mount Antero Granite NYF Miarolitic beryl...Mountains, Boise, Custer and Elsmore counties, ID, USA Sawtooth Granite in the Idaho batholith NYF Miarolitic |  | | Journal (article/letter/editorial) | | DISCUSSIONS 177 THE RIDGEWAY GOLD-COPPER DEPOSIT: A HIGH-GRADE ALKALIC PORPHYRY DEPOSIT IN THE LACHLAN...commentary on the Wilson et al. (2003) paper on the Ridgeway alkalic porphyry Au-Cu deposit, Smith (2005) highlights...the Ordovician volcanic sequence of the wider Ridgeway-Cadia region (zones 1, 2, and 3 of Smith, 1969)...hydrothermal alteration zones documented from Ridgeway and other porphyry deposits of the Cadia district...calc-potassic) alteration assemblages in the core of the Ridgeway deposit (Wilson et al., 2003). This spatial arrangement |  | Zukowski, W., Cooke, D. R., Deyell, C. L., McInnes, P., Simpson, K. (2014) Genesis and Exploration Implications of Epithermal Gold Mineralization and Porphyry-Style Alteration at the Endeavour 41 Prospect, Cowal District, New South Wales, Australia. Economic Geology, 109 (4) 1079-1115 doi:10.2113/econgeo.109.4.1079 | Journal (article/letter/editorial) | | Barrick 3 Mineral Gold of Australia, Cowal Gold Mine, New South Wales, Australia Deposit Research Unit...N-trending group of gold deposits is described by mine geologists as the “gold corridor.” The deposits...2 km wide. The Cowal gold mine exploits the E42 deposit and is the only mine in the district, having commenced...resource of 82.8 Mt at 0.99 g/t gold (2.88 Moz; Henry et al., 2014). The E41 gold prospect is located...Geology of the Cowal Igneous Complex (adapted from Henry et al., 2014). images of the Cowal district (Fig |  | | Journal (article/letter/editorial) | | Economic Geology, v. 100, pp. 175–178 DISCUSSION THE RIDGEWAY GOLD-COPPER DEPOSIT: A HIGH-GRADE ALKALIC PORPHYRY...paper on the Ridgeway Au-Cu deposit, describe hydrothermal alteration about the Ridgeway porphyry ore...volcanic sequences, including the hosts to the Ridgeway deposit, based on district and regional zonation...follows: zone 1, quartz-albite-chlorite-epidotecarbonate; zone 2, quartz-albite-chlorite-epidote-prehnitecarbonate;...zone 3, quartz-albite-chlorite-epidote-prehnitepumpellyite-carbonate; zone 4, quartz-albite-chlorite-ep |  | | Journal (article/letter/editorial) | | silicification and H (sericite), CO2 (calcite-ankerite), Na (albite), B (tourmaline), and S (pyrite) metasomatism....and NW of Mt. Ophir (Ball 1901; Dunstan 1911; Ridgeway 1936). Recent exploration has concentrated on...sericite-quartz-albite-carbonatep yrite-(arsenopyrite-barite) ,r ~ quartz-albite-carbonate-pyrite...alteration only is shown. Less intense quartz-albite-carbonate-sericite-pyrite alteration is present...chlorite (ripidolite with F e : F e + Mg = 0.35-0.451)-albite (An1 -2)futile _+essen1 The editors have requested |  | | Report (volume) | | General features____________________________ Coosa County _________ ____________________ Randolph County...Cherokee County_____________________________ 72 Elbert County _____________________________ 75 Hall County__...County_______________________________ 76 Hart County. ___ __ __________________ 77, Lumpkin and Union counti...___________ S3 Pickens County _______-______________________ 83 Rabun County-_____________________________...____________ 86 Troup County ________________________________ 86 Upson County _______________________________ |  | | Journal (article/letter/editorial) | | Geology and ore deposits of the Alma district, Park County' . e o l .S u n e y , B u l l . 3 , p . 4 6 , t...Buckfield, Maine' made in the Amelia district in Virginia where a few pegmatites have been worked to a depth...pegmatites of the Amelia, Goochland, and Ridgeway areas, Virginia: Amer. Jour. ol Sci. (5),17,p' 543,1929...Madagascar, central Maine, Llano County, Texas, and San Diego County, California. On the other hand, cavities...Goranson, E. A., The hiddenite deposit in Alexander County, North Carolina: Am. M.ineralogist, lS, pp. 2gG-302 |  | | Journal (issue) | | the Virginia Polytechnic Institute, Engineering Experiment Station Series, dealing with Virginia Mineral...Mineral Localities: Virginia Mineral Localities (1960 Edition) Virginia Mineral Localities (Supplement...(Supplement I) Virginia Mineral Localities (Supplement II) Virginia Minerals and Rocks (3rd Edition) Ex LIBRIS...\I i! II II BULLETIN OF THE ·, I !V I ii VIRGINIA POLYTECHNIC INSTITUTE Engineering Experiment Station...Series No. 151 Ii !I ·1 " ii :c H I I I I ! VIRGINIA MINERAL LOCALITIES ( SUPPLEMENT II ) By Richard |  | | Report (issue) | | Uranium occurrences in non-sedimentary rocks of Virginia ........... 96 Table 18 Selected references arranged...occurrences in non-sedimentary rocks of southwestern Virginia.........................98 Figure 23. Uranium...occurrences in non-sedimentary rocks of north-central Virginia........................99 INTRODUCTION Uranium...deposit occurs as a thin seam in graphitic Cleburne County. The property is, about 11.2 SINE phyllite which...radioactivity is 5 to 7 times background. Hill copper mine. RM 1968. Source ol informal Phyllite Location |  | | Report (issue) | | Wilmington Wilmington, N.C. William S. Henika Virginia Division of Mineral Resources Charlottesville.... . . . . . . . . iii Sandy Level Quadrangle, Virginia: Its Geology and Regional Interpretation (C.R.... 7 Metamorphic Gradients in Pittsylvania County, Virginia (J. P. Gregory). . . . . . . . . . . . . ... 49 Cataclastic Zone Associated with the Davie County Triassic Basin (D. V. Milton). . . . . . . . ....from the Dan River (North Carolina) - Danville (Virginia) Basin (E. I. Robbins and A. Traverse). . . . |
|
