 | | Journal (article/letter/editorial) | | AMERICAN MINERALOGIST AN OCCURRENCE OF XONOTLITE AT LEESBURG,VIRGINIAI Museum E,q,Rr U, S. Nationatr V. Srranlrow...Triassic limestone conglomerate, at Leesburg, Loudoun County, Virginia. The minerals and the metamorphic...was picked up as a loose mass on the floor of the quarry by Dr. Waldemar T. Schaller while on a visit to...which may be silica from the decomposition of wollastonite fibers. The interstices between the xonotlite...xonotlite areas are filled with pearly granular wollastonite. This xonotlite, like those previously described |  | | Report (issue) | | JL / Culpfeper and B arbour sville Basins, Virginia and Maryland C7 ll.S. / PAPER Triassic-Jurassic...Stratigraphy of the Culpeper and Barboursville Basins, Virginia and Maryland By K.Y. LEE and AJ. FROELICH U.S...stratigraphy of the Culpeper and Barboursville basins, Virginia and Maryland. (U.S. Geological Survey professional...Geology Culpeper Basin (Va. and Md.) 4. Geology Virginia Barboursville Basin. I. Froelich, A.J. (Albert............................................. 16 Leesburg Member....................................... |  | | 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) | | Geology of the Waterford Quadrangle, Virginia and Maryland, and the Virginia Part of the Point of Rocks Quadrangle...Ridge province and Culpeper basin in northern Virginia and Maryland UNITED STATES GOVERNMENT PRINTING...Geology of the Waterford quadrangle, Virginia and Maryland, and the Virginia part of the Point of Rocks quadrangle...references. Supt. of Docs. no.: I 19.3:2095 l. Geology-Virginia. 2. Geology-Maryland. I. Burton, William C. (William............................................. .. Loudoun Formation .................................... |  | | Report (issue) | | Association: apophyllite. Tobermorite, clinohedrite, wollastonite, diopside, thaumasite, laumontite, stilbite...Xonotla, Puebla, Mexico. In the USA, at Leesburg, Loudoun Co., Virginia; from Franklin, Sussex Co., New...New Jersey; in the Hunting Hill quarry, Rockland, Montgomery Co., Maryland; on Isle Royale, Lake Superior |  | | Report (issue) | | ^ Anne Arundel County 43 Baltimore County 45 Howard County - Montgomery County 88 Prince Georges...Georges County Virginia 74 . 120 129 Arlington County 129 Fairfax County 131 Fauquier County 139...139 Loudoun County 143 Prince William County 149 Diabase quarries of northern Virginia 155 CAPTIONS...forming a ridge north of Route 7 near Dranesville, Virginia. Figure 7. Locations of mineral deposits in...mines in the Soldiers Delight region, Baltimore County, Maryland. Adapted from Pearre and Heyl , 19.60 |  | | Report (issue) | | metamorphosed rocks of the northern Culpeper basin, Virginia by K. Y. Lee and A. J. Froelich Open-File Report...1. Index map of Culpeper basin and vicinity, Virginia and Maryland, showing location of Figure 3. Figure...metamorphosed rocks of the northern Culpeper basin, Virginia by K. Y. Lee and A. J. Froelich Geology of the...north from the Rapidan River near Madison Mills, Virginia, across the Potomac River and terminates near...in the northern part of the Culpeper basin in Virginia, one from the thermally metamorphosed aureole |  | | Journal (article/letter/editorial) | | 共basalt兲 in the Goose Creek quarry, Leesburg, Loudoun County, Virginia, USA 共Dunn et al., 1980兲. It was...reported: as exceptional crystals from the Pandulena quarry, Nasik, Maharashtra, India and from nearby localities...Oberbaumühle quarry, Windischeschenbach, Bavaria, Germany 共Hampel and Keck, 1990兲; from the Jensen quarry, Riverside...Riverside County, CA 共Gaines et al., 1997兲. The crystal structure of goosecreekite was solved by Rouse...minimize loss of water. Probe standards were wollastonite 共Ca, Si兲, synthetic Al2 O3 共Al兲, albite 共Na兲 |  | | Journal (article/letter/editorial) | | 28,1923. Several miner4l localities near Leesburg, Virginia were visited. Ten members, W. S. Burbank...Wherry and R. W. G. Wyckhofi, took part. At a quarry in Leesburg a vein of datolite cut the Crystallized specimens...At Shear planes carry prehnite, Goose Creek the quarry is cut by a diabase sill. apophyllite, laumontite...quarries of Stoneham proved to be a very pure wollastonite sometimes stained by epidote' The green stained |  | | Journal (article/letter/editorial) | | Umpleby, J. B., Geologic and ore deposits of Lemhi County, Idaho; I/. S. G e o l .S u r o e y ,B u l l ....28,1923. Several miner4l localities near Leesburg, Virginia were visited. Ten members, W. S. Burbank...Wherry and R. W. G. Wyckhofi, took part. At a quarry in Leesburg a vein of datolite cut the Crystallized specimens...At Shear planes carry prehnite, Goose Creek the quarry is cut by a diabase sill. apophyllite, laumontite...quarries of Stoneham proved to be a very pure wollastonite sometimes stained by epidote' The green stained |  | | Journal (article/letter/editorial) | | 464+ 1 .468 | 47 New Jersey (Brown) New Mexico Virginia Ducktown Av. .s00+ .505 1.468 1.51 1 .505 1...United States, as follows: New Jersey-West Virginia-Leesburg Paterson and Great Notch 6 Thaumasite (easily...Tennessee-Ducktown New Mexico-Magdalena Utah-Beaver County California-Riverside and San Bernardino counties...Hickory mine in Beaver County.l0 In San Bernardino County, California, thaumasite forms narrow veins in metamorphosed...Magdalena district, Socorro County, New Mexico.l2 At Leesburg, Virginia, thaumasite was foundl3 in xonotlite |  | | 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 |  | | Journal (article/letter/editorial) | | brief reference was made to the occurrence of wollastonite and xonotlite associated with the flint nodules...is veined by narrow stringers consisting of wollastonite crystals. Smaller crystals are also found enclosed...fibres in which are set clear pearly laths of wollastonite ranging in size up to 15 • l m m . Where the...coloured assemblage in which porphyroblasts of wollastonite can be readily recognized by the unaided eye...sheaves of xoDotlite surrounding porphyroblasts of wollastonite. These xonotlite sheaves vary in colour from |  | | Book (volume) | | ..........................................499 Virginia .....................................................................................525 West Virginia ...............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ......................................................................22 Arizona County Map .......................................... |  | | Book (volume) | | ..........................................408 Virginia .....................................................................................429 West Virginia ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a |  | | Book (volume) | | ..........................................408 Virginia .....................................................................................431 West Virginia ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a |  | | Journal (article/letter/editorial) | | condensed assemblages magnetite+wollastonite, kirschsteinite (CaFe2+Si04)+wollastonite and kirschsteinite+xonotlite...under equilibrium conditions. The hydration of wollastonite to xonotlite occurs at much lower temperatures...bars. Inasmuch as the growth of xonotlite from wollastonite + H2O was never accomplished, this high temperature...They are andradite, hedenbergite, magnetite, wollastonite, kirschsteinite, xonotlite, quartz, ilvaite...Hvaite Iron Kirschsteinite Magnetite Quartz Wollastonite Xonotlite Vapor (fluid) Hdo Wo u MH NNO FMQ |  | | Book (volume) | | 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...minesColumbite, Gold, Silver, etc.; and (2) Old Marble Quarry on the Needles Hwy. 5.5 mi. NEScheelite, and deep |  | | Book | | be minerals. Microcline, Crystal Peak, Colorado, USA * 12 x 9x 5 om MINERALS: PRODUCTS OF A CHANGING...zeolites. Calcite (septarian nodule), San Juan County, Utah, USA * 18 x 24x Bem 14 | MINERALS: PRODUCTS...Madagascar e(2x23x3em Quartz, Mount Ida, Arkansas, USA ° 14x 15 x 10 cm Corundum, Mozambique * 17 x 11...typical crystal shape. Goethite, Tintic, Utah, USA * 16.5 x 3.5 x 2.5 om Drusy These minerals have...linarite, Bingham, New Mexico, USA * 9x 75 x 2.cm Arborescent copper, Michigan, USA * 35 x 8 x 1 cm Radiating |  | Esteban, J. J., Cuevas, J., Tubia, J. M., Yusta, I. (2003) XONOTLITE IN RODINGITE ASSEMBLAGES FROM THE RONDA PERIDOTITES, BETIC CORDILLERAS, SOUTHERN SPAIN. The Canadian Mineralogist, 41 (1) 161-170 doi:10.2113/gscanmin.41.1.161 | Journal (article/letter/editorial) | | truscottite and gyrolite, or by the hydration of wollastonite (Roy 1958, Harker 1964). In the samples studied...V. (1925): An occurrence of xonotlite at Leesburg, Virginia. Am. Mineral. 10, 12-13. SHAW, S., HENDERSON |  | | Journal (article/letter/editorial) | | r m a l silicate zone b y a narrow sheath of wollastonite. Not only the width b u t a]so the nature of...Merwinite Gehlenite Spinel Magnetite Perovskite Wollastonite Xonotlite Gyrolite Afwillite Ettringite Perovskite...and ]arnite give place to a narrow fringe of wollastonite, and this mineral also forms small veins through...to an assemblage consisting of xonotlite and wollastonite. Xonotlite.--This mineral forms aggregates of...crystals enclosing comparatively large blades of wollastonite up to 3 ram. in length. The optical properties |  | | Catalog/List | | enlarged photograph of a piece of Obsidian, from Lake County, Oregon, which shows a Conchoidal fracture. t...ALBITE (sodium aluminum trisilicate Xline mass; Virginia ............................. . Cleavage, showing...aluminum, iron and cerium orthosilicate Massive; Virginia or N. Carolina ......... ... ...... . Orthite...California. . . . . . . Massive, brown, with Wollastonite ; New York . . . . Essonite XJ. gemmy, Brazil.... . . . . . . . . . . . Xline, with Fuchsite; Virginia . . . . . . . . . . . . . . . . . . . . . . . |  | | Book | | fluorite, gypsum, topaz, pectolite, wernerite, wollastonite, calcite, witherite, strontianite, aragonite...for field use. Since a vast expanse of rock in a quarry, mine dump, or mine itself will usually need to...on active collecting in the field. Collecting in quarry, mine dump, or mine itself is an essential, indispensable...rocks blaze forth in their full luminous glory. The quarry heap or mine dump, if it is of the right kind,...interesting visit to the benitoite mine in San Benito County, California. It is located on a ridge on the coastal | | | Book | | fluorite, gypsum, topaz, pectolite, wernerite, wollastonite, calcite, witherite, strontianite, aragonite...for field use. Since a vast expanse of rock in a quarry, mine dump, or mine itself will usually need to...on active collecting in the field. Collecting in quarry, mine dump, or mine itself is an essential, indispensable...rocks blaze forth in their full luminous glory. The quarry heap or mine dump, if it is of the right kind,...interesting visit to the benitoite mine in San Benito County, California. It is located on a ridge on the coastal |  | | Report (volume) | | ............................................. Virginia......................................................................................... West Virginia.................................................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;...following localities : Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20 S., R. 7 E.; |
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