 | | Report (issue) | | VIRGINIA GEOLOGICAL SURVEY UNIVERSITY OF VIRGINIA Tnour.s Lnorvanp Warsow, Pn. D. DIRECTOR Bulletin...Geology of the'Titanium and Apatite Depositrs of Virginia Bv Tnorues LuoNeno Wersow eNo Srrpnex Tannp ...Vrncrnre I9I3 ,//l' ,4 BULLE'I'IN III-A VIRGINIA GEOLOGICAI, SUITVEY. Piney Rir-er near Rose's...Geoloeic occurrence. Chemical characters. Norms'of Amherst-Nelson counties Mineralogical characters. Quartz...Pr,lrn L Map of rutile area in Amherst and Nelson Counties, Virginia ' ' in pocket " ' X'rontispiece |  | | Journal (article/letter/editorial) | | PETROLOGY OF THE MONTPELIER AND ROSELAND POTASSIC ANORTHOSITES, VIRGINIA BRENT E. OWENS§ Department of...Geology, College of William and Mary, Williamsburg, Virginia 23187, U.S.A. ROBERT F. DYMEK* Department of...Missouri 63130, U.S.A. ABSTRACT The Montpelier and Roseland plutons are the southernmost, and among the youngest...which Ba levels exceed those of Sr. Montpelier and Roseland are the most potassic of all massif anorthosites...cooccurring plagioclase and pyroxene in Montpelier and Roseland (%An versus %En) lie well off trends defined for |  | | | | Geological Survey, 956 National Center, Reston, VA 20192, USA 4 Camborne School of Mines, School of Geography,...presented of chevkinite-group minerals from Canada, USA, Guatemala, Norway, Scotland, Italy and India. The...cation in the A site. Patchilyzoned crystals from Virginia and Guatemala contain both perrierite and chevkinite... Pegmatitic Bearpaw Mts, Montana Burley Farm, Virginia BjĂžrkedalen, Norway Mt Charles, East Antarctica...the Sierra Nevada, California, pegmatites from Virginia, and metacarbonates from Golden Lake, Ontario |  | | Report (issue) | | known deposits in the United, States only those in Virginia are of commercial importance. These have been...made the subject of a special report 2 by the Virginia Geological Survey, which was preceded by a preliminary...preliminary paper on the rutile deposits of Amherst and Nelson counties.3 1 Clarke, F. W., U. S. Geol....Geology of the titanium and apatite deposits of Virginia: Virginia Geol. Survey Bull. 3-A, 308 pp., 1913. 3...3 Watson, T. L., and Taber, Stephen, The Virginia rutile deposits: tJ. S. Geol. Survey Bull. 430, pp. |  | | Report (issue) | | Acting Director U.S. Geological Survey, Reston, Virginia: 2017 For more information on the USGSâthe Federal...Maryland; Minn., Minnesota; N.Y., New York; Va., Virginia] Deposit class Deposit type1 Typical mineralogy...Albititic/metasomatized Rutile 3 KragerĂž, Norway; Roseland, Va. (in part) Iâ6 Alkalic/metasomatized Perovskite...Weathered anorthositic rocks Ilmenite, rutile 4 Roseland, Va. (in part) Mâ1 Eclogite-hosted Rutile ...metasomatized anorthosite Ilmenite, rutile 4 Roseland, Va. (in part) Mâ5 Metasomatized aluminum-rich |  | | Report (issue) | | INTERIOR TITANIUM DEPOSITS OF NELSON AND AMHERST COUNTIES VIRGINIA GEOLOGICAL SURVEY PROFESSIONAL PAPER 198...OF THE TITANIUM DEPOSITS OF NELSON AND AMHERST COUNTIES, VIRGINIA BY CLARENCE S. ROSS UNITED STATES..._________________________ Quartz monzonite____ _____ ________ Roseland anorthosite____. __________ Primary andesine anorthosite...sphene_____---------_---_ 2 FIGURE 1 . Map of the Virginia titanium region._____________________________...Paragenesis of minerals from the Roseland titanium district, Virginia. nr OCCURRENCE AND ORIGIN OF |  | | Journal (article/letter/editorial) | | with syenite (andesine anorthosite) of Nelson County, Virginia.............................................topographic divisions of the Appalachian ranges. In Virginia the Blue Eidge Mountains form a fairly continuous...feet above sealevel; but southwestward through Virginia the ridge becomes broader and higher, and attains...above the sea are reached at several points in Virginia. The Blue Eidge is composed of a central core...the adjacent portions of the Piedmont Plateau in Virginia one of the dominant igneous rocks of granitoid |  | | Journal (article/letter/editorial) | | 00:39 19 January 2015 Graves Mountain, Lincoln County, Georgia B lack and nearly black minerals-no...ilmenite, anatase, brookite, hematite, quartz, titanite, chlorite, muscovite, kyanite, andalusite, and...near Waterbury, Vermont; at Poker Hill, Providence County, Rhode Island; and in Essex, Orange, and Warren...(Gordon 1922). Some of these originated in Chester County and include prismatic crystals to 10 cm from Loganâs...crystalline rocks of Virginia (Dietrich 1990) and has been produced commercially from the Roseland district of |  | | Report (issue) | | Center Reston, Virginia 22092 A. Krishna Sinha Department of Geological Sciences Virginia Polytechnic Institute...Institute and State University Blacksburg, Virginia 24061 Norman Herz Department of Geology The University...core of the Blue Ridge anticlinorium in northern Virginia James W. Clarke Geology and age of the Robertson...8 Rb-Sr age for the Robertson River pluton in Virginia and its implication on the age of the Catoctin...Evolution of the Grenville terrane in the central Virginia ee ee eee ORNS eee i FVein.) A. K. Sinha and M |  | | Report (issue) | | the coverâTurquois 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) | | quantity was also obtained. In addition to the Roseland quarry mentioned above, from which the main output...lower-grade material, is about a fifth of that of the Virginia quarries. Australia.-There have been small outputs...carbon and reduced in the minerals, including titanite, or sphene, a calcium titan electric furnace;...are large deposits of rutile in Virginia, near Roseland in Nelson County, which are worked in open cuts;...the United Slates. The rutile-bearing rock of Roseland has the 27 5 tons of concentrate rutile carrying |  | | Journal (article/letter/editorial) | | quantity was also obtained. In addition to the Roseland quarry mentioned above, from which the main output...lower-grade material, is about a fifth of that of the Virginia quarries. Australia.-There have been small outputs...carbon and reduced in the minerals, including titanite, or sphene, a calcium titan electric furnace;...are large deposits of rutile in Virginia, near Roseland in Nelson County, which are worked in open cuts;...the United Slates. The rutile-bearing rock of Roseland has the 27 5 tons of concentrate rutile carrying |  | | Journal (article/letter/editorial) | | MINERALOGYOF THE VIRGINIA DIABASE Anruun A. Pncau, (Jniaersity oJ Virginia. .' The diabase in Virginia is of a...Geology of the University of Virginia. The occurrencesof diabase in Virginia may be most conveniently discussed...diabanite I Roberts, J. K., The geology of the Virginia Triassic: Va. Geol..Surt:., Bull.29, pp. 43-64...intrusive diabase at Goose Creek, Loudoun County, Virginia: Proc. U. S. Nationatr Museum, vol. 66, Article...aggregation of minerals), epidote, calcite, sericite, titanite, prehnite, datolite, chabazite, stilbite, laumontite |  | Westhues, Anne, Hanchar, John M., Whitehouse, Martin J., Martinsson, Olof (2016) New Constraints on the Timing of Host-Rock Emplacement, Hydrothermal Alteration, and Iron Oxide-Apatite Mineralization in the Kiruna District, Norrbotten, Sweden. Economic Geology, 111 (7) 1595-1618 doi:10.2113/econgeo.111.7.1595 | Journal (article/letter/editorial) | | present study is the first to use zircon, and titanite, for high spatial resolution, large-radius secondary...and contains amygdules ofmagnetite, actinolite, titanite, and locally minor tourmaline (Geijer, 1910)....undulated features in detail (Fig. 2E). Amphibole and titanite are absent; the main gangue phases are apatite...formation at Kiirunavaara (Cliff et al., 1990). Titanite associated with hydrothermal actinolite-calcite...Kiirunavaara footwall and from a coarsegrained, magnetite-titanite vein in the footwall of the Luossavaara deposit |  | | Journal (article/letter/editorial) | | hostrock in the similar titaniferousdepositin Virginia describedby ClarenceRoss. The distributionof the...similar and features that are dissimilar to the Virginia deposit are tabulated and discussed. Photomicrographsof...evidence,but also on the analogy with the depositin Virginia, the xvriter concludesthat the titanium mineralsand...depositwith that in Nelson and AmherstCounty,Virginia, described by ClarenceRoss (27) and C. H. Moore...(22). Rosscalledthe dominantlyfeldsparrock of the Virginia area 758 EDWIN G. P/IULSON '4 Fro. 3. Photograph |  | Johnson, Thomas A., Vervoort, Jeffrey D., Ramsey, Molly J., Southworth, Scott, Mulcahy, Sean R. (2020) Tectonic evolution of the Grenville Orogen in the central Appalachians. Precambrian Research, 346. 105740pp. doi:10.1016/j.precamres.2020.105740 | Journal (article/letter/editorial) | | University, Pullman, WA 99164, USA U.S. Geological Survey, Reston, VA 20192, USA Geology Department, Western...Western Washington University, Bellingham, WA 98225, USA ARTICLE INFO ABSTRACT Keywords: Grenville Orogeny...Santa Barbara, Santa Barbara, California 93106, USA. â https://doi.org/10.1016/j.precamres.2020.105740...Southworth et al. (2010), after Rankin et al. (1990). Virginia, Mesoproterozoic basement comprise the Shenandoah...Crystalline rocks of the Blue Ridge basement in northern Virginia form the core of the north-plunging Blue Ridge |  | | Journal (article/letter/editorial) | | Geological Sciences , Virginia Polytechnic Institute and State University , Rlacksburg, Virginia, 24061 Published...Geological Sciences, Virginia Polytechnic Institute and State University, Rlacksburg, Virginia 24061 Downloaded...(1987) modeled the data available for onshore Virginia, including the data previously analyzed by James...operation in the Valley and Ridge near Franklin, West Virginia, at distance 475 km along the transect. Using...modeled by Holbrook et al. (1994). Onshore in Virginia, James et al. (1968) correlated the regional-scale |  | | Journal (article/letter/editorial) | | quantity was also obtained. In addition to the Roseland quarry mentioned above, same district several...than copper, lead, zinc, or any of the common Virginia quarries. to give slags, mentioned rare metals...carbon and reduced in the minerals, including titanite, or sphene, a calcium titan electric furnace;...titanic oxide. treating cast iron. Roseland in Nelson County, which are worked in open or only the...crystalline There are large deposits of rutile in Virginia, near cuts; smaller deposits have Slates. |  | | Journal (article/letter/editorial) | | California; in the Petaca district of Rio Arriba County, New Mexico; from the Harney Peak region of South...Reagan mining district, Kern range, White Pine County, Nevada. SULFUR, S, occurs very rarely in pegmatites...sulfide, has been found in the Ben Nevis ville, Union County, Georgia. It has been mine on San Augustin Peak...tains, New Mexico, with argentite in a Randolph County, Alabama; and from a sulfide zone near the center...Fairplay, Eldorado County, California; and three miles west of Buntingville, Lassen County, in the same state |  | | Book | | held in Blacksburg, Virginia, U .S.A., June 1997 Edited by A. KRISHNA SINHA Virginia Polytechnic Institute...Institute arul State Vniversity, Blacksburg, Virginia, V.SA. SPRINGER SCIENCE+BUSINESS MEDIA, B.V. A C...of the Grenville basement in the Blue Ridge of Virginia (from Sinha and Bartholomew, 1984 in The Grenville...Interpretations for the Precambrian, Midcontinent USA M.P. Car/son, S.B.Treves, R.J. Goble, A. Xu ......the Grenvillian Event of the Hudson Highlands, NY, USA A.E. Gates .... ............................... |  | | 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 |  | | Journal (article/letter/editorial) | | and a dyke have been dated by the U/Pb method on titanite to 456±4 Ma. In low melt fraction areas minor...silica-undersaturated gabbro. We also present a U/Pb titanite age for the dykes. 2. Regional geological setting...for metagabbro, but such lenses contain abundant titanite and one of the dated fractions comes from such...apatite, muscovite, biotite, iron-oxides/-sulphides, titanite and epidote or clinozoisite. Quartz is never present...Accessory minerals are FeâTi-oxides, sulphides and titanite. The amphibolites consist of 70â100% amphibole |  | | Report (issue) | | George Washington University Washington, D.C. 20052 USA Louise Corriveau Geological Survey of Canada GSC-QuĂ©bec...Skidmore College Saratoga Springs, New York 12866 USA Mervin J. Bartholomew Department of Earth Sciences...Tennessee 38152 USA Memoir 197 3300 Penrose Place, P.O. Box 9140 â Boulder, Colorado 80301-9140, USA 2004 MWR197...Place, P.O. Box 9140, Boulder, Colorado 80301-9140, USA. Copyright is not claimed on any material prepared...Place, P.O. Box 9140, Boulder, Colorado 80301-9140, USA www.geosociety.org Printed in U.S.A. GSA Books Science |  | | Report (issue) | | Arkansas: Pulaski and Saline Counties. Arkansas, Sal1ne CountY-----Arkansas, Magnet Cove------- 9 Arkansas,...3.0 ~ Colorado, Iron Hill-------Idaho, Lemhi CountY--------New Hampshire, Bartlett-----New Jersey,...the W~SEiSWi sec. 11, T. 2 S., R. 14 W., Saline County. Oxidized ferruginous granitic-textured bauxite...Co., NEtSWi sec. 16,. T. 2 S., R. 14 W., Saline County. Red bauxite with black pisolites ("birds-eye ore")...Co., SEiSWi sec. 16, T. 2 S., R. 14 W , Saline County. Grs.ni tic- textured bauxite (1' sponge ore") |  | | Journal (article/letter/editorial) | | from Llano rhyolite (llanite), north-central Llano County, Texas MrcHl.Br E. Zor,nNsxy Planetary Materials...phenocrystsfrom the Llano rhyolite (llanite), Llano County, Texas, derive their coloration from Rayleigh scattering...summarized. The blue quartzes of the Roselanddistrict, Virginia, have been examined by Robertson(1884, 1885)and...unusual controversy surrounds blue quartz from Llano County, Texas. In the initial report ofthis occurrence...phenocrysts from the Llano rhyolite, from Llano County, Texas, locally called "llanite" (Iddings, 1904) |
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