 | | 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 (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 |  | Connor, Jon J., Bartel, Ardith J., Brandt, E.L., Briggs, P.H., Danahey, S., Fey, D.L., Hatfield, D.B., Malcolm, M.J., Merritt, V., Riddle, G.O., Roof, S., Stewart, K.C., Storey, J., Taggert, Joseph E., Vaughn, R.B. (1990) Geochemical stratigraphy of the Yellowjacket Formation (Middle Proterozoic) in the area of the Idaho Cobalt Belt, Lemhi County, Idaho, Part A - Discussion. Open-File Report Vol. 1990 (90-234) US Geological Survey doi:10.3133/ofr90234a | Report (issue) | | Proterozoic) in the area of the Idaho Cobalt Belt, Lemhi County, Idaho Part A. Discussion By Jon J. Connor with...atypical rock .............. Geochemical analyses of scapolite and pyrite .................. 24 26 28 30 ABSTRACT...high-angle, reverse fault (the Leesburg fault of Shockey, 1957, p. 16). The Leesburg fault is shown in figure...p. 214). Throw across both the Moyer Creek and Leesburg faults is probably not large (as suggested on...reflect Sevier-type compression. The footwall of the Leesburg fault is occupied locally by the Big Creek Quartzite |  | | 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 (volume) | | assachusetts, Connecticut, New jersey, Pennsylvania, Virginia , Maryland , North Carolina, and other Eastern...Massachusetts, Connecticut, New Jersey, Pennsylvania, Virginia, Maryland , North Carolina, and South Carolina...appropriate, the applicable early Mesozoic basin, State, county, or 7 1/2minute USGS topographic quadrangle covered...the State are cited. More than one basin, State, county, or quadrangle may appear for an entry. A State...C.-S.C.) Deep River (N.C.) Durham (N.C.) Davie County (N.C.) Dan River and Danville (N.C.-Va.) Scottsburg |  | | Journal (article/letter/editorial) | | the tourmaline is everywhere associated with scapolite. I t also occurs in the gypsum-anhydrite-albi... C.). Datolite from North Plainfield, Somerset County, New Jersey. Amer. Journ. Sci., 1915, ser. 4,vol...intrusive Triassic diabase at Goose Creek, Loudoun County, Virginia. Proc. U.S. Nat. iKnsetun, 1924, vol....conglomerate metamorphosed by intrusive diabase at Leesburg, Virginia. Proc. U.S. Nat. Museum, 1925, vol. 66, art |  | | Journal (article/letter/editorial) | | MINERAL ZONING IN THE NEW JERSEY-PENNSYLVANIA-VIRGINIA W. H. TRIASSIC AREA. NEWHOUSE. INTRODUCTION...different parts of the New Jersey-Pennsylvania-Virginia Triassic region,but no attempthas apparentlybeenmade...beds. Coal seams are included in the seriesin Virginia and North Carolina. The commonred color of the...Woodworth,J. B.: Geologyof the Richmond Basin, Virginia. U.S. Geol. Surv., x9th Ann. Rept. 385-515, x899;...x899; Roberts, J. K.: The Geology of the Virginia Triassic. Va. Geol. Surv., Bull. 29, x9•8. 6x6 W |  | | Journal (article/letter/editorial) | | Belt, USA J.T. Nash and J.J. Connor US Geological Survey, Box 25046, MS 973, Denver, CO 80225, USA Received:...supersaline fluid inclusions, by Cl-rich biotite and scapolite (as much as 1.87 percent CI in Fe-rich biotite)...Unlike some metasedimentary rocks containing scapolite and high C1, the Yellowjacket Formation lacks...analyses. The Blackbird mine is located in Lemhi County, Idaho, about 35 km west of Salmon (Fig. 1). Production...contents of black biotite, commonly accompanied by scapolite outside of ore zones, by very unusual bulk WA |  | | Journal (article/letter/editorial) | | of the petrified trees that had been found at Leesburg, Lemhi Co., Idaho Pasco Co., Fla. (see R & M,...yellow brown to olive brown and the cial trip to Leesburg in the spring and largest prism is % inch long...Georgia, but so far as is known, this job on this Leesburg wood. My thanks specimen is the first colored...Georgia. The Cobb p:bbles have been found in Chicago, County specimen was collected by Bob Cook Co., III., on...away." Delphi is in the western part of Carroll County in the central part of the state. IOWA — A nice |  | | Journal (article/letter/editorial) | | new silicate (Eakle) . .66, 97 Hoegbomite from Virginia (Wat44 Fossilbone (Rogers) 1 son).. . intercepts...(Rogers, Reed) . 68 Saponite 4I2 Saxen,M. 180 Scapolite;Kanda(Baklund) ... . 20 Schaller,W.T.... .. 131...444 =Tetradymite; ldaho. . . . r98 Xonotlite; Leesburg, Va t2 Sillimanite... .. 253 S i m p s o n ,E...Watanab6,M.... 22 Watson,T. L.. . . 1 Hoegbomitefrom Virginia 54 MemorialoI, (Ries). . . 52 Winchell, A. N |  | Nash, J.T., Connor, J.J., Currey, K.J., Papp, C.S. (1990) Anomalous chlorine in iron-rich strata, Yellowjacket Formation, Lemhi County, Idaho; analytical data and discussion. Open-File Report Vol. 1990 (90-721) US Geological Survey doi:10.3133/ofr90721 | Report (issue) | | IRON-RICH STRATA, YELLOWJACKET FORMATION, LEMHI COUNTY, IDAHO: ANALYTICAL DATA AND DISCUSSION By J.T...IRON-RICH STRATA, YELLOWJACKET FORMATION, LEMHI COUNTY, IDAHO: ANALYTICAL DATA AND DISCUSSION By J.T...correlates with biotite content, and locally with scapolite, with Fe and K, but not with F. Microprobe analyses...Unlike some metasedimentary rocks containing scapolite and high Cl, there is no evidence for evaporitic...more than 50 percent biotite or biotite plus scapolite. Mafic dikes altered and metamorphosed to biotite-rich |  | | Journal (issue) | | website: http://www.novamineralclub.org/ Northern Virginia Mineral Club members, Wayne Sukow November 16...Towers), 3548 South Jefferson St. (intersecting Leesburg Pike), Falls Church, VA Phone: 703-671-7507 Reservations...Gilgit. The pegmatite at Morefield Mine in Amelia County, VA, has also produced topaz. Imperial topaz (see...Today, I stay in the midAtlantic region, mainly in Virginia, Maryland, and Pennsylvania. If you have attended...colors. Wernerite is a fluorescent variety of scapolite. Sources: Wikipedia (top); Mindat (bottom). November |  | | Report (volume) | | BUIJLETIN 528 GEOLOGY AND ORE DEPOSITS 1 OF LEMHI COUNTY, IDAHO BY JOSEPH B. UMPLEBY WASHINGTON GOVERNMENT.......................... 74 Mineralogy of Lemhi County ores....................................... 74...in Lemhi County.......................................... Mining districts of Lemhi County.............96 98 0 CONTENTS. Mining districts of Lemhi County Continued. Page. Texas district Continued. Mines...127 127 CONTENTS. 7 Mining districts of Lemhi County Continued. Page. Gibbonsville district. ...... |  | | Report (issue) | | and C.M. Sears U.S. Geological Survey Reston, Virginia 22092 Open-File Report 92-448 This report is...Site Number, Site Name ...................... 6 County, State, Quadrangle, Latitude, Longitude .........Occurrences located in the Culpeper basin, Maryland and Virginia ..................... 168 H. Section H: Occurrences...Occurrences located in other areas of Virginia. ... 185 I. Section I: Occurrences located in North Carolina...given in the categories of : 1. name and location ( county, state, quadrangle, latitude, and longitude) 2 |  | | Journal (article/letter/editorial) | | Survey, National Center, Mail Stop 954, Reston, Virginia 20192 Abstract Mineralogical and geochemical...Fe-Co-Cu-Au-Bi-Y-REE deposits of the Idaho cobalt belt in Lemhi County, east-central Idaho. The focus is on the Blackbird...coeval Yellowjacket Formation locally contains scapolite-rich rocks and carbonate strata that record shallow-water...contain porphyroblasts of marialitic (Na-Cl) scapolite (Connor, 1990; Nash and Connor, 1993). Early studies...tuffs. Given the presence of abundant marialitic scapolite in biotitite units distal from the deposits (Nash |  | Lund, K., Tysdal, R. G., Evans, K. V., Kunk, M. J., Pillers, R. M. (2011) Structural Controls and Evolution of Gold-, Silver-, and REE-Bearing Copper-Cobalt Ore Deposits, Blackbird District, East-Central Idaho: Epigenetic Origins. Economic Geology, 106 (4) 585-618 doi:10.2113/econgeo.106.4.585 | Journal (article/letter/editorial) | | National Center, 12201 Sunrise Valley Dr., Reston, Virginia 20192 Abstract The Cu-Co ± Au (± Ag ± Ni ± REE)...feldspar-quartz metasandstone, lesser siltite, scapolite marble and calc-silicate mineral layers Mm- to...laminations, mudchips, mudcracks, and loadcasts Tidal. Scapolite marble originated as evaporite Lower to middle...based on the presence of marialite (Na-rich) scapolite (Tysdal and Desborough, 1997). When published...manifested by silicification, chloritization, and scapolite porphyryblasts. The zone was reactivated as a |  | | 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.... . . . . . . . . . . . Xline, with Fuchsite; Virginia . . . . . . . . . . . . . . . . . . . . . . ....lb... .26 .60 .25 *Amazonstone, cleavage, pale; Virginia .............. .3 6 .60 .25 *Cleavage, bluish-green |  | | Book (volume) | | Dahlonega Co. and Rabum Co., and the McDuffie County Belt extending through portions of McDuffie, Warren...Sphalerite. BALDWIN COUNTY MILLEDGEVILLE, at state farmjasper. BANKS COUNTY COMMERCE, along Hwy. 59...along adjoining Co. linerock crystal. BARROW COUNTY WINDER, along rd. to Jefferson and 1½ mi. inside...Guide for Rock Hounds in the United States BARTOW COUNTY AREA, Saltpeter Cave, as floatjasper. CARTERSVILLE:...agate, (banded, various colors), jasper. BIBB COUNTY MACON: at Holton Quarry, 7½ mi. NWagate; N |  | | 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 |  | | Book | | interesting visit to the benitoite mine in San Benito County, California. It is located on a ridge on the coastal...Hampshire, Connecticut, Pennsylvania, through Virginia and the Carolinas to Georgia. In the West, well-known...Cave-in-Rock, 17 miles apart on the Ohio River in Hardin County. It is from mines at these locations, and Elizabethtown...virtually identical fluorite is found in Black Hawk County. Again, the fluorite contains internal phantom...calcite deweylite forsterite foshagite plombierite scapolite strontianite thaumasite tobermorite (crestmoreite) | | | Book | | interesting visit to the benitoite mine in San Benito County, California. It is located on a ridge on the coastal...Hampshire, Connecticut, Pennsylvania, through Virginia and the Carolinas to Georgia. In the West, well-known...Cave-in-Rock, 17 miles apart on the Ohio River in Hardin County. It is from mines at these locations, and Elizabethtown...virtually identical fluorite is found in Black Hawk County. Again, the fluorite contains internal phantom...(centrallasite) harkerite hyalite microcline plombierite scapolite strontianite thaumasite to bermorite (crestmoreite) |  | | Book | | of Saratoga in Now York, by Doct. John H. Steel. county A (Steel.') 1822." (N. G.) " New Farmer and...Limestone. Hornblende Slate. Slate. (Sil 5.272.; Scapolite ? in great quantities, associated with quartz...) slate. (Hall.) VERMONT. 23 GUILFORD. Scapolite 3 in abundance ; has been called tremolite...limestone, ( C.) in distinct concretions, and Scapolite, fine specimens, massive, crystallized in veins...softer and much more glassy in its fracture than scapolite. (Annals of Philos. Loud. May, 1824,) Phosphate |  | | Book (edition) | | MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...Maine, New Hampshire, Connecticut, New Jersey, Virginia, and North Carolina. In the West, the Rockies...corners of the claimed area, and filing in the county land agent's office. In addition he has to show...called bediasites from Bedias, a town in Grimes county. Gold is a subject by itself, but because the gem...the East, Georgia, North and South Carolina, and Virginia have been the major gold producers, mostly from |  | | Report (issue) | | principle component in all three, but calcite, scapolite, biotite, epidote, chlorite, amphiboles, plagioclase...Montana. Shockey (1957) mapped two formations in the Leesburg Quadrangle, a phyllite formation and an impure...where he used the terms Panther Creek phyllite and Leesburg quartzite. These terms are approximately equivalent...35 percent of the Other minerals present are scapolite, biotite, rauscovite, chlorite, epidote, amphiboles...thin section are seen to be large crystals of scapolite choked with inclusions of quartz and feldspar |
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