 | | Journal (article/letter/editorial) | | deposits of the Neoproterozoic Mara Rosa magmatic arc, central Brazil Claudinei G. de Oliveira *, Márcio...Universidade de Brası́lia, Brası́lia-DF, 70910.900, Brazil Received 18 August 2003; accepted 24 April 2004...the Neoproterozoic Goiás Magmatic Arc, central Brazil, dates back to the beginning of the 1970s. The...Neoproterozoic juvenile crust, the Arenópolis and the Mara Rosa arcs, are identified. They lie in the southern...values between + 3.0 and + 4.6. In the Chapada – Mara Rosa area, the supracrustal rocks form three individual |  | | Journal (article/letter/editorial) | | Abstract Brazil has been a major but intermittent producer of gold since its discovery in 1500. Brazil led...hosted in Archean rocks produced 66% of the gold in Brazil, whereas deposits in Paleoproterozoic and Neoproterozoic...lia, Brazil E.A. Ladeira Rua Muzambino 355/404, Belo Horizonte, Minas Gerais 30310-280, Brazil Deposits...importance. The Archean and Paleoproterozoic terranes of Brazil largely lack base-metal-rich volcanogenic massive...in the CarajaÂs Mineral Province. Introduction Brazil has been an important producer of gold for centuries |  | Matteini, M., Junges, S.L., Dantas, E.L., Pimentel, M.M., Bühn, B. (2010) In situ zircon U–Pb and Lu–Hf isotope systematic on magmatic rocks: Insights on the crustal evolution of the Neoproterozoic Goiás Magmatic Arc, Brasília belt, Central Brazil. Gondwana Research, 17 (1) 1-12 doi:10.1016/j.gr.2009.05.008 | Journal (article/letter/editorial) | | evolution of the Neoproterozoic Goiás Magmatic Arc, Brasília belt, Central Brazil M. Matteini a,⁎, S.L. Junges...Universidade Federal de Ouro Preto, 35400, Ouro Preto, MG, Brazil Geochronology Laboratory, Instituto de Geociências...Universidade de Brasília, 70910 900, Brasília, DF, Brazil a r t i c l e i n f o Article history: Received...May 2009 Available online 18 May 2009 Keywords: Goiás Magmatic Arc LA-(MC) ICP-MS Hf isotopes Neoproterozoic...a b s t r a c t The Mara Rosa arc constitutes the northern portion of the Goiás Magmatic Arc, an important |  | | Journal (article/letter/editorial) | | StoneLine LateriticProfileof the PosseDeposit, Central Brazil CLAUDIO G. PORTO Universidade FederaldoRiodeJaneiro... CidadeUniversit•ria, RiodeJaneiro, 21910-240, Brazil AND MARTIN HALE International Institute for Aerospace...nearthe town of Mara (McFarlane,1976; Butt, 1981; Nahon, 1986). Although Rosa,Goi•ts, Brazil,some400 kmnorthofBras[lia(Fig...locallysiliceousand tigationshavebeenconductedin Brazil (Michel, 1987; Ol- cancontainseveralintercalationsof...5/a08-14 $4.00 308 Au REDISTRIBUTION,POSSEDEPOSIT,BRAZIL 309 m 0 --LEGEND-- T T T TOPSOILi::•:::':':' |  | | Journal (article/letter/editorial) | | assemblage from Neoproterozoic mélange, Central Brazil Matthew T. Brown, Reinhardt A. Fuck, Elton L. Dantas...assemblage from Neoproterozoic mélange, Central Brazil, Precambrian Research (2019), doi: https://doi...assemblage from Neoproterozoic mélange, Central Brazil Matthew T. Browna*, Reinhardt A. Fucka, Elton L...University of Brasília, Brasília, Federal District, 70910-900, Brazil *Corresponding author. E-mail address:...Abstract The Neoproterozoic Brasília belt, central Brazil, formed during the amalgamation of West Gondwana |  | | Journal (article/letter/editorial) | | late discovery of the phenomenal Cripple Creek district, essentially subsequent to the development of...Analyses of calaverite from the Kirkland Lake district, Ontario, Canada, show up to several tenths of...Solberg 1995). Calaverite is known from the Star mine in Montgomery County, North Carolina, where it occurs...Vindicator mine, Haralson County, and the Consolidated and Singleton mines of the Dahlonega district, Lumpkin...states, it occurs as 5-mm lathlike crytstals in quartz at Rib Mountain, Marathon County, Wisconsin. Calaverite |  | | Book | | Alkmim Editors São Francisco Craton, Eastern Brazil Tectonic Genealogy of a Miniature Continent Regional...Alkmim • Editors São Francisco Craton, Eastern Brazil Tectonic Genealogy of a Miniature Continent 123...Estado do Rio de Janeiro Maracanã, Rio de Janeiro Brazil Fernando F. Alkmim Escola de Minas Universidade...Preto Ouro Preto Brazil Umberto G. Cordani Universidade de São Paulo São Paulo Brazil ISSN 2364-6438...significant contributor to the mining industry in Brazil. This book provides a state of knowledge overview |  | | Journal (article/letter/editorial) | | Mafic-Ultramafic Complexes, western Borborema Province, Brazil: geochemical and isotope constraints for evolution...Mafic-Ultramafic Complexes, western Borborema Province, Brazil: geochemical and isotope constraints for evolution...Mafic-Ultramafic Complexes, western Borborema Province, Brazil: geochemical and isotope constraints for evolution...Brasilia, Brasilia, DF, Brazil ²CPRM – Geological Survey of Brazil, Recife, PE, Brazil *Corresponding author...Brígida domains, Borborema Province, Northeast Brazil. Ultramafic lithologies including metadunites, |  | | Book | | domínio oceânico (em branco) e sedimentares (em rosa); as altas estão representadas em laranja. Também...o caso de um cinturão colisional (continentes em rosa), mas bacias de antepaís se formam também associadas...pequenas aberturas oceânicas e os oceanos formados (Goiás, Borborema, Adamastor e Climene) tinham ligações... que incidiu pelo menos no Rio Grande do Sul e Goiás; o de 650-600 Ma, o mais generalizado no território...reconhecido, com pequena área ex- exposto (escudos, em rosa) e a cobertura de plataforma (em amarelo). O Brasil |  | | Report (issue) | | crystal weighed 455 kilograms. 2m: The Queen Anne mine in Zimbabwe has produced crystals up to 2 meters...some pegmatites. This specimen, from Minas Gerais, Brazil, is housed in the Deutsches Edelstein Museum in...crystals are found in soils and stream gravels in Brazil. On the other hand, at high temperatures and pressures...near Sabsar, on the Gilgit to Skardu Road, Skardu district, Northern Areas, Pakistan. Collection Ty Lawrence;...phosphate type pegmatites, beryl is associated with quartz, microcline, albite, muscovite, biotite, ferrocolumbite |  | | Journal (issue) | | of course, essen ti:11. These arc especially quartz, fe/d,;par, ho, 11blc11dc, /J)'l'OXl'II<' and olivim·...and pyroxene arc Jis tingu1shcd by the former posse sing prismatic ° ° crysr:d and clcal'agc angles...---------------_!________________ + Quartz -Quartz Essential -1- Quartz I • -Quartz Quartz I Minerals +Nephelite Mafic...NephE-lite Syenite Syenite Granodiorite ( 2: Quartz-(!) Monzonite ·----------------'-------_;________;c...aphlnitc if groundm:1.�s 1s gbs:-y. Fclsitic Clastic Quartz-(3) Diorite I Dacitc (Glass porphyry.) I Andcsitc |  | | Journal (issue) | | Albuquerque. 28 Annual Jamboree of Arizona Small Mine operators association at Tucson. C. M. d'Autremont...California Federation of Womens' clubs, southern district, to hold annual convention in El Centro, California...of a Renegade Pahute By GEORGE E. PERKINS 22 GEMS Mine That Has Everything—Except Gem Stones By JOHN W..."lost" Amargosa mine and learned that an old man named Garcia who had discovered the mine was living in...persuaded him to draw a map showing the location of the mine. Egbert and his companion bought a team of horses |  | | Book | | Gold History of the Victor Cripple Creek Mining District by Brian Levine 7 j i : { i t } ' dui}...History and Tales of the Cripple Creek-Victor Mining District By Brian H. Levine 1981 Copyright © 1981 By...for Texasgulf in the Cripple CreekVictor Mining District) Jim Keener (Editor of the Cripple Creek Gold...Colorado Springs. As the owner of the Independence Mine, he ‘‘ruled’’ Little London. By Brian H. Levine...been taken from the Cripple Creek-Victor Mining District. Geological speculations insist there is more |  | | Journal (issue) | | FICTION LANDMARK ART OF LIVING ARTIST C o p p e r Mine in B i n g h a m C a n y o n By JOHN BIGELOW Desert...Cover Contest A w a r d s A n n o u n c e d LOST MINE Big A n t e l o p e Placer, b y JOHN D. MITCHELL...her story of the reopening of the old Keane Wonder mine overlooking Death Valley, Helen Anderson has given...pioneering as the oldtimers knew it. The Keane Wonder mine is a gigantic cavern with its roof and walls held...resembling great toadstools. Beautiful streaks of quartz and sulphide seamed with ore that bears gold, lead |  | | Journal (article/letter/editorial) | | Ti-Fe ___Cr___Cu mineralization in northeastern Brazil H. Beurlen a, A.F. Da Silva Filho b, I.P. Guimar~esb...50000 Recife PE, Brazil bDepartamento de Geologia da UFPE, 50000 Recife PE, Brazil (Received August 3...unusual TiFe _+Cr_+ Cu mineralization in northeastern Brazil. In: G. Ga~l and K. Schulz (Editors), Precambrian...km west of Recife, including the 20 Mt Riacho da Posse deposit show striking similarities with the Bodoc6...The only other eclogite occurrence recorded in Brazil, at Pouso Alegre, state of Minas Gerais, has an |  | Fernández-Lozano, Javier, González-Díez, Alberto, Gutiérrez-Alonso, Gabriel, Carrasco, Rosa, Pedraza, Javier, García-Talegón, Jacinta, Alonso-Gavilán, Gaspar, Remondo, Juan, Bonachea, Jaime, Morellón, Mario (2018) New Perspectives for UAV-Based Modelling the Roman Gold Mining Infrastructure in NW Spain. Minerals, 8 (11) 518 doi:10.3390/min8110518 | Journal (article/letter/editorial) | | González-Díez 1 , Gabriel Gutiérrez-Alonso 2,3 , Rosa M. Carrasco 4 , Javier Pedraza 5 , Jacinta García-Talegón...to a wide conjugate fracture network filled with quartz-bearing from NE-SW to NW-SE trending veins and...the presence of large triangular volumes of white quartz filling the hinge of open folds, such as the Manzaneda...Manzaneda anticline [42]. The origin of these quartz veins and dikes have been explained as related to...large triangular volumesdisperse of whiteveins quartz filling the that hinge of reach over 10 g/t in |  | | Book | | headframe of one of the mines of the Clifford district of central Nye County. All of the 17 interior...hs, wl© ee, Table of Contents Wmelost breviogle Mine. 7 2./07c Mineo s ue amt nein lakes ab! peeOcellardin...|reasure .< ae an, 5... ae es 29 ae LOst. oheepherder Mine, tases weet We. cs ea OZ Soecond Lost: Pegles) Miness...lrainireasure sere 2... .. S. 43 OmLost Barkley Mine gras, saree eee ee ee, cs, 44 HOM Ose eer Hunter...Canyon. aa) LOST BREYFOGLE MINE The famous tale of the lost Breyfogle mine has been in the public eye |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo, Andrea...3. Minerals - Brazil 4. Minerals- Classification 5. Mineralogy 6. Mineralogy - Brazil - History 7. Precious...Precious stones - Brazil I. Bartorelli, Andrea. II. Title. 09-10025 Cover photograph: Crystal of brazilianite...Landmann. CDD-549 Indexes for systematic catalog: 1. Brazil: Minerals and precious stones: Mineralogy and gemology |  | | Journal (issue) | | Tropico Mine, the Lancaster area, a visit to the San Bernardino Museum, Dale Mining District near Twentynine...Twentynine Palms, San Jacinto and Santa Rosa Mountains above Palm Desert, Anza-Borrego Desert State Park...agate, colored by some impurities; followed by quartz (the same mineral as agate, with little or no impurities)...with later depositions of calcite and others. The quartz is usually clear, but may be lightly colored, or...interior. A radiating group of perfectly clear quartz crystals, with the tips of the individual crystals |  | | Journal (issue) | | other than Earl Parot, who is a personal friend of mine and whom I esteem very highlyOf course you have...along with you there will be no difficulty. —K.H. Mine was Too Rich . . . Pasadena, California Dear Mr...traveling on foot towards Needles from the Black Metal mine of Pete McGuire down the river, he came upon the... b y M A R S H A L S O U T H LOST MINE Lost 'Captain Dick' Mine By JOHN D. MITCHELL . . . . 25 Masonic...cowboy, and he was a good one—trustcers in the posse which finally ran the by this time." worthy and |  | | Journal (issue) | | Lytle Coleman, Owner/Operator Mine Owner of Lava Cap Thunderegg, Mine Shaft Thunderegg, Eggzilla Thunderegg...726 Durham St. Hellertown, PA 18055 ROUGH GEMS MINE-DIRECT FACETING ROUGHS & MINERAL DIAMOND PACIFIC...objects. Quartz is mainly used, including the favorite amethyst, carnelian, citrine, rose quartz, tigereye...snow fantasy; Karen’s ruby in zoisite beads on a quartz crystal base gem tree looks like a painting of...with a flat bottom. Drusy amethyst geodes, or quartz crystals, are often chosen. Then the trunk is built |  | Liu, Chao, Hystad, Grethe, Golden, Joshua J., Hummer, Daniel R., Downs, Robert T., Morrison, Shaunna M., Ralph, Jolyon P., Hazen, Robert M. (2017) Chromium mineral ecology. American Mineralogist, 102 (3) 612-619 doi:10.2138/am-2017-5900 | Journal (article/letter/editorial) | | Mammoth-Saint Anthony Mine (Mammoth-St Anthony Mine; Mammoth Mine; St. Anthony Mine), St. Anthony Deposit...Deposit, Tiger, Mammoth District, Pinal Co., Arizona, U.S.A. 3 Callenberg North Open Cut (No. 1), Callenberg...Negev, Israel 5 Red Ledge Mine, Washington, Washington District (Omega District), Nevada Co., California...Kamakusa, Mazaruni District, Guyana 7 Red Lead Mine, Dundas Mineral Field, Zeehan District, Tasmania, Australia...Anchor Mine (Aggravation Mine; East Vulture Mining Co. Mine), Hummingbird Spring, Osborn District, Big |  | | Journal (issue) | | drawings $1.00 The Emigrant Trail and a Lost Gold Mine . . . TERRIBLE TRAIL: THE MEEK CUTOFF 1845 by Keith...reactivation in 1854. If you have never seen an open pit mine, this is a good chance. Turn off the highway at...across from the Trading Post is a road north to Santa Rosa Village. Just west of it is Ventana Cave; and here... Mountains northwest of Tombstone. As head of a large posse which included his brother Warren, the youngest...been bending over a pot of stew when Wyatt and the posse rode into the outlaw camp. When Curly Bill jumped |  | | Journal (issue) | | up to date on Maricopa County's Historic Sites Posse—certainly a worthwhile organization the like of...their fortunes, were lured into the area by the quartz-rich hills lying north and east of Bear Valley...escarpment of the San Bernardino, San Jacinto and Santa Rosa Mountains on the west. Patton himself spent only...northeast across the McCoy Mountains to the Arlington Mine and the almost deserted company town of Midland...MAGAZINE P.O. Box 1318 Palm Desert, Calif. 92260 12 Quartz chips mark a lasting replica of the U.S. Seal at |  | | Journal (issue) | | the privilege to share them with you has enriched mine. Choral Pepper TWO GUIDES TO COLORADO'S COLORFUL...young man, was pretty well fixed. He was scouting a mine up our way for a large concern in San Francisco...Highway 62 about a half mile east of the business district, to Utah Trail, then about four blocks south to...location was known, originally, as the Oasis of Mara (mara is an Indian word, meaning "much grass and little...this area in 1855, first came upon the Oasis of Mara, he found ample evidence that only Indians had lived |
|
