 | | Report (issue) | | Limestone Shale, 62. Lower Dolomite, Black Rock Dolomite, Black Rock Limestone, 63. Crease Limestone, Gully...INTRODUCTION " AREA, LOCATION AND PHYSICAL FEATURES THE DISTRICT included in 1-in. New Series Geol'ogical sheets... • • • • 50 TRIASSIC Rhaetic: mainly grey-black clay • • • • Keup-er · Keuper Marl, including Tea...Oolite: mainly oolitic limestone Black Rock Dolomite and Black Rock Limestone : dolomites changing laterally...Sandstone Group: red and yellow sandstone with Quartz Conglomerate in one or more bands at base . . |  | | Report (issue) | | and Mineral Resources of the Lemhi Pass Thorium District, Idaho and Montana By MORTIMER H. STAATZ With...chemistry of the thorium veins in the Lemhi Pass district UNITED STATES GOVERNMENT PRINTING OFFICE...and mineral resources of the Lemhi Pass thorium district, Idaho and Montana. (Geology and resources of...acknowledgments ............................. 5 Rocks of the district ............................................................................................ 13 Rock types ......................................... |  | | Journal (article/letter/editorial) | | COMMUNICATIONS GEOLOGY OF THE BOSS MINING AREA, GILBERT DISTRICT, ESMERALDA COUNTY, NEVADA Y. DINER P.O. Box 10522...Building,26 NorthMainStreet,Yerington, Nevada89447 District Geology Introduction The Bossminingareaencompasses... volcanic Monte Cristo Range, southernGilbert district, Es- rocksin the Bossminingareaandin the restof...meraldaCounty,Nevada(Figs. 1 and 2). The Boss Gilbert district for 10 mi north and west. To the south alluvial...The BlackRockzone throughoutthe greaterGilbert district. is a deepergoldoccurrence of differentmineralogy |  | | Report (volume) | | veins in the northeastern part of the Lemhi Pass district J UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...··-··-·-·--·····--···········-··----------------Rock types ________________·------------------------...-----------------------------------------------Quartz latite ... -------------·---------------------...----------------------------------------Barren quartz veins .................... -------------------...only a part of the much larger Lemhi Pass thorium district, is the area of the most abundant thorium veins |  | | Report (issue) | | OF THE BUREAU OF LAND MANAGEMENT'S WINNEMUCCA DISTRICT AND SURPRISE RESOURCE AREA, NORTHWEST NEVADA AND...and Mesozoic Allochthonous Magmatic-Arc Rocks (Black Rock Terrane) ......................................Nevada together comprise the BLM's Winnemucca District. The Surprise RA is located in extreme northwest...California and is part of the BLM's Susanville District, which is administered by the BLM's California...Shaded areas represent ranges and areas of exposed rock. White areas represent alluvium-covered basins. |  | | Report (issue) | | Sanidine crystal tuff ______________ ;_..:._ 79 SO Quartz-sanidine crystal tuff-------~.~,:.::· Vitric tuff... Porphyritic rhyolite _____ _. ____ -'----~.82 Black glass-welded tuff-----------~..:·_ · 84 Red vitric..._______ . ___________ ~ _._ ~...,. -.-·~ · 105 Quartz ___________ ~ ____ ..: ___ :..·-:---~:..·.::_,...Spor Mountain block ___________________ _ Bla.ck Rock Hills block..: _____________ .:. __ _ Castle Mountain..._________ _ Relation of ore deposits to country rock ______ _ Relation of ore deposits to structural |  | | Report (volume) | | ...... 581 581 584 584 585 586 586 586 587 Black Rock mine....................................... ...Page Plate 88. Geologic map and section of the Black Rock mine and vicinity, Mono County, Calif..........pocket 89. Geologic map of levels A, B, C, and D, Black Rock mine............................... In pocket...deposits found prior to 1940, only one, that at the Black Rock mine, has been productive, although another,...favorable for the discovery of other deposits. At the Black Rock mine the limestone and the tactite masses must |  | | Journal (issue) | | & G. Schnorrer-Kohler Arizona's Silver mining district ................................................attach “skivers” or spine labels made of very thin, black, red or dark green leather (legal books, for example...(bars and lettering can usually be stamped in gold, black or white, or some of each). They will generally...the crystal drawings: calcite (2,544 drawings), quartz (855), barite (739), pyrite (691), orthoclase (633)...at least ‘A inch thick, resting upon a matrix of rock associated with actinolite. The color is rich brown |  | Doebrich, Jeff L., Albino, G.V., Barker, C.E., Duffield, W.A., Dunn, V.C., Hanna, W.F., McFarlan, J.P., McGuire, D.J., Miller, M.S., Peters, S.G., Plouff, Donald, Raines, G.L., Sawatasky, D.L., Spanski, G.T. (1994) Resource assessment of the Bureau of Land Management's Winnemucca District and Surprise Resource Area, Northwest Nevada and Northeast California. Open-File Report Vol. 1994 (94-712) US Geological Survey doi:10.3133/ofr94712 | Report (issue) | | OF THE BUREAU OF LAND MANAGEMENT'S WINNEMUCCA DISTRICT AND SURPRISE RESOURCE AREA, NORTHWEST NEVADA AND...the Bureau of Land Management's (BLM) Winnemucca District and Surprise Resource Area, an area covering 13...example, the proposed 1.2 million acre High Rock/Black Rock National Conservation Area), and the impact...part of their Resource Management Plan for the District/Resource Area or for other planning units such...includes metallic mineral resources, industrial rock and mineral resources, and sand and gravel resources |  | | Report (issue) | | ...................................... Silver district. ........................................................................................... Black Rock mine ..........................................65 65 65 65 66 67 67 68 68 70 3 PAGE Eureka district............................................................................................... Quartz veins............................................galena-fluorite veins........................................ Quartz veins........ ................. ....... ... .. |  | | Report (volume) | | Mineral Resources of the Black Rock Desert Wilderness Study Area, Humboldt County, Nevada U.S. GEOLOGICAL...1726-E Chapter E Mineral Resources of the Black Rock Desert Wilderness Study Area, Humboldt County...Cataloging-in-Publication Data Mineral resources of the Black Rock Desert Wilderness Study Area, Humboldt County...and mineral resources Nevada Black Rock Desert Wilderness. 2. Black Rock Desert Wilderness (Nev.) I. Calzia...the results of a mineral survey of part of the Black Rock Desert Wilderness Study Area (NV-020-620), Humboldt |  | | Journal (article/letter/editorial) | | measurements of ages of different minerals from the same rock obtained from the available radioactive decay schemes...discordant results. The granites and pegmatitites at Quartz Creek, Colorado, are such examples. More recent...others (1958) has shown the response of a Precambrian rock to the Appalachian orogenic event or events. Fig...the types of discordance which have been found at Quartz Creek and for one of the mantled gneiss domes near...ages which combines those found at Baltimore and Quartz Creek. This comparison shows that no simple ordering |  | | Book | | possibly need, carrying rock hammers in luggage, and bringing tons of rock home from vacations! We also...Fossil Saber-Tooths 226 Central Florida Phosphate District 228 Where the Buffalo Roamed, and the Deer and...to Maine. These Florida coasts include the pure quartz sands of the barrier islands and dune fields in...canoe-accessible streams expose some of the best natural rock outcrops in the state, so some of these areas receive...Abundant larger foraminifera and some reefs | present. Quartz-rich sediments and clays deposited in panhandle |  | | Report (issue) | | .................... 29 CHAPTER IlL-SWISSHELM DISTRICT. By F . W. GALBRAITH AND W. B. LORING _... __...Mining Company ........ References, Swisshelm District .......... _.. _...................................... :.~.-..1 CHAPTER V.-ORO BLANCO OF RUBY DISTRICT. ..................................................................... Production, Oro Blanco District ................................... _........... _..... ___ ... __ ._. References, Oro Blanco District . ____ ._ ... __.. __ .. ___ __ __ . __ ._. _____ |  | | Book | | this book is a systematic look at the mineral and rock materials that have been used from prehistoric times...extensive mineral and rock species index to see all references to a specific rock or mineral. This book...(practicing and in training) who deal regularly with rock and mineral artifacts. Geoarchaeologists, diverse...properties. There is some overlap in the coverage of rock materials in this chapter with Chap. 6, which covers...chapter important uses are noted, e.g., examples of rock sculptures are discussed in both Chaps. 6 and 11 |  | | Report (issue) | | is a compilation of 200 areas of exposed granitic rock within the State of Nevada. Data were compiled on...Department of Energy to be used in assessing granitic rock as a potential medium for the subsurface storage...Factors considered for each area of exposed granitic rock are general location, coordinates, land classification...compilation. Granitic Rock.--Broadly applies to any holocrystalline, quartz-bearing plutonic rock. In this report...report, the term is restricted to rock types ranging in composition from granite to diorite (table 1). Textural |  | | Book | | petrographic microscope in of the constituents of the rock and to serve as a guide to the more advanced students...because they show the geological relations of the rock in question. The arrangement and classification...Colorado Mass. Felsite (Aporhyolite) Quartz-Felsite Porphyry Mass. Quartz-Felsite Porphyry Virginia Rhyolite...33. 34. Granodiorite New York 24. 25. 26. Quartz-Syenite New York Hornblende-Syenite Vermont Monzonite...Maine Massachusetts Dacite-Quartz-Diorite Series: Colorado Minnesota Quartz-Monzonite Porphyry VI. Colo |  | | Book | | ddtachdes Coloured ink (i.e. other than blue or black)/ Encre de couleur (i.e. autre que bleue ou noire)...prism terminated by a&ix-sided pyramid. In the " Black Rock" of Cape Diamond (a carbonaceous Clay-slate,)...) (Note 2.) the following varities of quartz occur of quartz ac^ Ist. Acirular, or needle shaped crystals—...of the rock. Amethystine Quartz. Lakes Superior and Huron. — — Dr. B. do. Huron. Black Quartz. Granular...Granular Quartz. Forming an aggregate with black crystaUized Hornblende— Montreal mountain, —Dr. B. (Note |  | | Report (issue) | | Corps Gunnery Range Yuma to the Silver Bell Mining District Martinez Lake Turnoff to Quartzsite Quartzsite...Society 1979 Spring Field Trip . STOPS - DAY 1 * BLACK ROCK MINE - DAY 2 , THIS PAGE INTENTIONALLY BLANK...highway and the Picacho Mountains to the right. RED ROCK ROAD, MP 225 Northward from this point, the view...of the summit. Three isolated mounds of black-appearing rock occur in the pass and are best seen from...the interchange. The most distant outcrop of this rock lies atop a gneissic ridge extending southeastward |  | | Journal (issue) | | Vertical Force Magnetic Survey of the Coalisland District, Co. Tyrone, Northern Ireland, by W. Bullerwell...Gravimeter Survey of the Ston Easton-Harptree District, East Somerset. by W. Bullerwell, B.Sc., Ph.D...IV.-Notes on the Geology of the Alton Pancras district, Dorset, by J. G. 0. Smart, B.Sc. ... • V.-Notes...-Sketch map showing the geology of the Alton Pancras district , .. ... 48 V PLATE III.-Hilger-Gramop.t arc...distribution of Carboniferous rocks in the Bristol District 2-3 FIG. 2.-Lithological subdivisions of the |  | | Report (volume) | | -_--_--_-------_ Black Rock (Shotwell) deposit.._._......_.._....._._._._._.. Black Jack (Skougard) claims...County__________________________________________________ Black Jack (Gregory) claims__-_____________________________...(Neilson) claims_______._--_____-----_--__---__ Black Jack (Kendall-Duvall) claims________--____---________...property___-_-____-_________________--_____-________ Black Ledge claims-___-_____-_-_____--___-_--___-__-__-l__... Staats and Pratt mines (Black Boy group)_-____--_-_____. Guy group (Black Jack mine)_____-_-___-,-_-___-____- |  | | Book | | labradorite; obsidian; onyx (chalcedony and marble); opal, quartz (agate, jasper, and chalcedony) ; rhyolite ("wonderstone");...amateur and professional collectors. Since the 1960s, "rock hounding" has become a popular hobby and hundreds...M-Malachite Ob-Obsidian Op-Opal Q-Cryptocrystalline quartz (one or more var ieties : agate , chal cedony,... jasper, petrified wood) Qa-Amethyst Qs-Smoky quartz R-Banded rhyolite S-Scheelite T-Topaz V-Variscite...Millard County 21. Black Rock (obsidian), Millard County 22. Mineral Mountain (smoky quartz, scheelite), Beaver |  | | Report (issue) | | • PETROGRAPHY OF THE PIOCHE DISTRICT, LINCOLN COUNTY, NEVADA By' JOSEPH L. GILLSON LOCATION AND...Pioche, Nev., has been studied by memb~rs of the rock was intensely endomorphosed by these of the United...brIef emanations and throughout the body of the rock summary of the results, by Westgate and Knopf,!...writer had the pleasure THE QUARTZ MONZONITE of serving in the district with Professor Westgate DisTRIBUTION...lies in the As shown on Figure 11, a granitoid quartz monzonite southern part of the Bristol Range quadrangle |  | | Journal (article/letter/editorial) | | The mines at Butte in Silver Bow County and the Black Pine mine in Granite County have produced many fine...camps sprung up all over the territory, and hard-rock mining followed shortly after. About the Index Many...1901–02: graphite (massive in marble) (Geach 1972). Black Rock deposit, E1/2 sec. 21, T. 10 S., R. 15 W.: fluorapatite...(Staatz et al. 1979). Browns Lake mine, Rock Creek district, sec. 3 and 4, T. 4 S., R. 10 W. Mined from...1972). Calvert mine = Red Buttons, Wise River district, sec. 12, T. 1 N., R. 13 W. The pit is reached |  | | Journal (article/letter/editorial) | | the best anywhere. Handsome specimens of barite, quartz, rhodochrosite, silver, and numerous other species...only comprehensive mineralogical study of the district. This work is as valuable today as it was 37 years...extraction technology originally conceived in the district were considered the state-of-the-art around the...1957). By the winter of 1864 the Summit Valley district (Butte’s original name) had been organized, with...placer gold deposits were located close to their hard-rock source (Blake, 1887b). Prospecting for this primary |
|
