 | | 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 |  | | Report (volume) | | the ruby, sapphire, spinel, emerald, rutile, and quartz of gem quality have been synthesized. The best...Fluorite Apatite . 6. 7. 8. 9. 10. Orthoclase Quartz Topaz Corundum Diamond The numbers preceding each...of silica (quartz, 7 on Moh's scale) particles, a gem stone should be harder than quartz. Some minerals...react to heat are: violet quartz (amethyst) changing to orange brown, smoky quartz to yellow, pale-green...sapphire, star sapphire, star ruby, rutile, and quartz are gem stones that have been successfully synthesized |  | | 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. |  | | Book (edition) | | gem stones mon dull are as hard or harder than quartz, a com- mineral everywhere present as dust which...Hardness Scale 6. Orthoclase 1. Talc 2. Gypsum 7. Quartz Topaz Corundum 10. Diamond 3. Colcite 8. 4...Your will scratch orthoclase feldspar but not quartz. In making hardness appears to be a scratch paper...the general arrange- ment of these surfaces. Quartz and amethyst, for example, are frequently crystallized...SPODUMENE DANBURITE DATOLITE GARNET FLUORITE QUARTZ CRYSTALS SPINEL STAUROLITE •^^ VESUVIANITE |  | | Report (issue) | | Mineral Deposits of the Roseland District of Central Virginia U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1371...Mineral Deposits of the Roseland District of Central Virginia By NORMAN HERZ and ERIC R. FORCE U.S. GEOLOGICAL...titanium-mineral deposits in Nelson and Amherst Counties in the Blue Ridge of Virginia UNITED STATES GOVERNMENT...mineral deposits of the Roseland district of central Virginia. (U.S. Geological Survey professional paper; 1371)...p. Supt. of Docs, no.: I 19.16:1371 1. Geology-Virginia-Roseland Region. 2. Mines and mineral resourcesVirginia-Roseland |  | | Book | | CHAPTER 4 Maryland ... 3 CHAPTER 5 Virginia 4 1 CHAPTER 6 West Virginia 5 CHAPTER 7 Kentucky 6 CHAPTER...streams and rivers f o r epidote, unakite, blue quartz, agate, chalcedony, petrified wood and other gemstones...Virginia's noted Rutherford Mine. Photograph by Dr. Virginia Lee Blackford. ical pearls in delicate pastel...dollars at the noted locality of Cowee Valley, Macon County, North Carolina. An enthusiastic family found and...the well known old Rutherford mine in Amelia County, Virginia, and found bright spessartine garnets, glowing |  | | Book (edition) | | MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...Diamond M Tourmaline fQl Ruby, O Sapphire Quartz crystal 'y^ Garnet — Azu rite, Malachite, Chrysocolla...from Derbyshire or, perhaps, a pyramid of smoky quartz from Cumberland. The next it may be rock crystal...Talc 6. Orthoclase feldspar 2. Gypsum 7. Quartz 3. Calcite 8. Topaz 4. Fluorite 9. Corundum...faces are placed with respect to one another. The quartz gems, for example, such as amethyst, form crystal |  | | 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 |  | | Book (volume) | | ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...townships of Washington, Virginia, Bedford, Jackson, Jefferson, Bethlehem, Monroe and Clark; on regional...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay |  | | Book (volume) | | ASHTABULA COUNTY CONNEAUT, area pits, quarries, rd. cuts, etc.⎯cone-in-cone Calcite. CLERMONT COUNTY MILFORD...CLINTON COUNTY WILMINGTON, area of Todd’s Ford, a mineral deposit⎯Hematite. COSHOCTON COUNTY AREA, townships...townships of Washington, Virginia, Bedford, Jackson, Jefferson, Bethlehem, Monroe and Clark; on regional...CUYAHOGA COUNTY CHAGRIN FALLS (on Geauga Co. line), area quarries⎯oilstone. DELAWARE COUNTY DELAWARE...nodules⎯Pyrite (crystals sharply cubic). FRANKLIN COUNTY COLUMBUS, area countywide exposures of blue clay |  | | Book | | HfiRIN COUNTY FREE LIBRfiRY 311110G386652Q I V Russell P MacFal A COLOR TREASUF FOR COLLECTORS...to Hunting Locations ? i 9 GIVEN TO THE MARIN COUNTY LIBRARY BY MARI N L MTNF.RAT. SOCTETY DAVID...Geological Surveys Distribution Branch. 1200 Virginia 22202. Those S for Eads Street. Arlington...may be able to buy specimens. map of Keweenaw County. Mich- Part of the U.S. Geological Survey topographic...grained granite rugated cardboard where of the quartz t it hits your ribs; then layer of newspaper |  | | 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...characters. Norms'of Amherst-Nelson counties Mineralogical characters. Quartz ....i...i 16l f93 Megascopic...General statement. Principal rock groups. Hypersthene quartz syenite. . . .;. . . General character. .. 233 |  | | Journal (issue) | | ........187 by P. B. Moore The origin of faden quartz .................................................wide range of interests, from pyroluminescence in quartz to extensive studies on contact metamorphism in...Schacht (who was bom Horace Greele} Schacht in the USA), President of the German Reichsbank. In du< course...INTRODUCTION The defining characteristic of faden quartz crystals is the presence of a white thread-like...“ fah-den” ), which means “ thread.” 1 Fa den quartz crystals are usually tabular due to uneven development |  | | Report (volume) | | Deposits of minerals of wide distribution, such as quartz and calcite, have been omitted, except those that............Prof. George H. Perkins, Burlington. Virginia...........Dr. Thomas L. Watson, Charlottesville...Washington....... Prof. Henry Landes, Seattle. West Virginia... .Dr. I. C. White, Morgantown. Wisconsin......See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton; |  | | Book (volume) | | from 18’ to 27’ long. In addition, gem Garnets, Quartz crystals, Topaz and Tourmaline add to the fascination...beds, excavations, etc.Selenite roses. BRULE COUNTY AREA: in the Oacoma zone of the Pierre Fm. On Elm...gray Barite rosette up to 5 or 6 inches. CAMPBELL COUNTY MOUND CITY, W to the Missouri R., regional hillsides...gravels, etc.petrified wood, wood opal. CORSON COUNTY LITTLE EAGLE: area ridges, slopes, stream beds...Guide for Rock Hounds in the United States CUSTER COUNTY AREA: The November Mine, 1.2 mi. SE of the Needles | | | Book | | D1stn but1on Branch 1200 S Eads Street Arl Ington Virginia 22202 Those for areas west of the M1ssIssIppI...topographic map of the Delaware q uadrangle o f Keweenaw County, Michigan This ,s an example o f the more picturesque...frlled with geodes lined with glittering calcite or quartz. Otten these can be found where they have been...known as pegmat1te Prospectors look for pieces of quartz and mica then try to trace the long narrow pegmat1te...looking for stains or changes In the pattern of the quartz and feldspar mass that would lead to a pocket of |  | | Journal (issue) | | Vochten & G. Brizzi The Alice Glory Hole, Clear Creek County, Colorado ................................185 by...M. Kohler & L. Minnaar Garnet Hill, White Pine County, Nevada .........................................Carolina by J. S. White & J. E. Nelen 203 An unusual quartz crystal from Zaire ..............................inclusions as negative crystals within quartz from Fonda, Montgomery County, New York. Notice that these also...making up a habit much like that of a distorted quartz crystal. In three of the cavities are visible round |  | | Report (volume) | | ............................................. Virginia......................................................................................... West Virginia.................................................of minerals that are widely distributed, such as quartz and calcite, have been omitted, except those that...See Bauxite and Halloysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton; |  | | Book (edition) | | great many very interesting and unique forms of quartz crystals and rutiles, and has added a great number... me some and to, lias of the novel forms of quartz crys- furnished some valuable notes also of...25. Chalcopyrite. 64. 26. Barnhardtite. 65. Quartz. 108. Saponite. 27. Marcasite. 66. Opal. 109...ities and suggestions from Mrs. H, A. Burdick county, of Mr. J. of A. D. Stephenson of Statesville...localities throughout the State, generally in quartz veins of the gneissic, granitic and dioritic rocks |  | | Book (edition) | | Molyhdite. 104. Deweylite. 29. Arsenopyrite. 65. Quartz. 105. 30. Nagyagite. 66. Opal. 106. Genthite...Burdiek, Macon Prof. J. T. I From am of county, of Mr. J. A. D. Stevenson, of States- Humphreys...numerous localities throughout the erally in quartz veins of the gneissic, granitic also in those of...their size, Cabarrus county, the Montgomery with have been Crump Mine county, (at the lat- octahedral...the Gaston county, and the Little John Caldwell county, and Pax Hill in Burke county. Very Shemwell |  | | Journal (issue) | | specimens show some da m ag e from $4.50 to $12.50 Quartz • Japan la w twins • N arushim a, N agasaki-ken... A N ew M ineral from the Gem Mine, San Benito County, California: A Progress R e p o rt...............Bowie, Md. ■ Mi ■M Elbaite, from Pala, San Diego County, California. This fine specimen has long been considered...the exhibitor’s failure to label his colorless quartz - Q uartz variety Rock Crystal. Certainly rock...exception exhibitors could not place colorless quartz, rose quartz, amethyst, etc. in the same case; with it |  | | 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 |  | | Book | | Geology and Virginia Richard V. Dietrich Professor of Geology and Dean School of Arts and Sciences,...University Press of Virginia Charlottesville Qt z.^.z THE UNIVERSITY PRESS OF VIRGINIA Copyright © 1970...by the Rector and Visitors of the University of Virginia First published 1970 Standard Book Number: 8139-0289-4...America To Frances, Rick, Kurt, Krista, and Virginia 161781 Digitized by the Internet Archive in...natives of Virginia and visitors to the Commonwealth—who are interested in geology and in Virginia. It attempts |  | | Book (volume) | | variety and wealth of locality information concerning quartz gemstones are recognized in a separate chapter...referring to any locality in the book. JS: Arlington, Virginia. June, 1959 Acknowledgments Tue successful...Royal Ontario Museum, Carl B. Gerber of Arlington, Virginia, and in the case of gemstone deposits in British...Kobuk jade locality. Descriptions of San Diego County, California, gemstones and the mines in which they...the generous assistance of many residents of that county. My special thanks are extended to Elbert H. McMacken |  | | Book | | United States by Bookcrafters, Fredericksburg, Virginia. PREFACE The end of 1994 marked the close of...Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54 AFGHANISTAN...Iron-manganese phosphates of the Williams pegmatites, Coosa County, Alabama (by P. B. Leavens & T. A. Simpson) 6:66-73...ALICE GLORY HOLE The Alice glory hole, Clear Creek County, Colorado (by T. A. Hanson & W. B. Craft) 18:185187...--and W. Hunt: The Tonopah-Belmont mine, Maricopa County, Arizona 19:139-144 ALLGOOD, GENNE MYERS --and |
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