 | | 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 |  | | 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...of twinned calaverite crystals from the Cresson mine, Cripple Creek, Teller County, Colorado. Dave Bunk |  | | 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 | | 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) | | 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...that it has a composition between ulvospinel, magnetite, and chromite and has a zonation of Cr-Mg enrichment...km west of Recife, including the 20 Mt Riacho da Posse deposit show striking similarities with the Bodoc6 |  | | 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;...and quartz; 15 cm from the Shigar Valley, Skardu district, Northern Areas, Pakistan Because it is associated |  | | Journal (article/letter/editorial) | | PaNnr.{ GuruanIos, Suroey,State oJ Minas Gerais, Brazil' Geological Chernist, INrnonucrroN While traveling...niobium-tantalate family, found on the Posse farm, in the Brejariba district. The geologicaloccurrenceof the...with quartz veins; decomposedgarnet; columbite; magnetite; monazitel samarskite; and tourmaline. In addition |  | | 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 |  | | 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 |  | | Book (volume) | | Empire 1nay be classified as follows : (1) Banded magnetite-hrematite-quartz-scbists associated with cherts...compaxable with those of the Lake Superior region, Brazil and elsewhere. (2) Bands and nodules of clay ironstone...after approaching t.he southern border of the district, turns sharp t-0 the west. Flux will be brought...situated at Jamshedpur (Sakchi) in the Singhbhum district to the north of Tatanagar CKalimati) railway station...slight.ly richer and purer ore-bodies in the Raipur district, supplies of ore are at present drawn from the |  | | 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...twenty-five inches tall. Many are made and imported from Brazil. The number of gemstones on those trees ranges...collected at their Yellow Gem Mine, in Idaho. PHOTO BY YELLOW GEM MINE This exotic common opal from...black manganese oxide dendrites. PHOTO BY YELLOW GEM MINE selling rocks, minerals, and her own jewelry. Karen |  | | Journal (article/letter/editorial) | | of secondary minerals at the Spring Creek copper mine, on the flank of Mount Remarkable, near Wilmington...quartz – feldspar – tourmaline rock in an abandoned mine at Sierra Gorda, near Antofagasta, Chile. Schlüter...discovery locality, the Brandholz-Goldkronach mining district, Germany. Found as a product of alteration of...Fürstenzeche lode, Brandholz-Goldkronach mining district, in the western part of the Fichtelgebirge, Bavaria...locality. Found at the Cerchiara manganese (braunite) mine, Val di Vara, eastern Liguria, Italy. Basso, R. |  | Crósta, A.P., Reimold, W.U., Vasconcelos, M.A.R., Hauser, N., Oliveira, G.J.G., Maziviero, M.V., Góes, A.M. (2019) Impact cratering: The South American record – Part 1. Geochemistry, 79 (1) 1-61 doi:10.1016/j.chemer.2018.06.001 | Journal (article/letter/editorial) | | State University of Campinas, Brazil University of Brasília, Brazil Natural History Museum – Leibniz...d Federal University of Bahia, Brazil e University of São Paulo, Brazil b c A R T I C LE I N FO A B...Universitária ‘Zeferino Vaz’, Campinas, SP, CEP 13083-855, Brazil. E-mail address: alvaro@ige.unicamp.br (A.P. Crósta)...xxx–xxx A.P. Crósta et al. offshore region of Brazil. Once again, this number of impact structures in...research and meteoritics have been presented in Brazil and Argentina by renowned researchers in the field |  | | Journal (issue) | | Fe. June 2—Park Lake Day and Fishing Derby, Santa Rosa, New Mexico. June 2-3—Morongo Valley, California...Mexico State Championship High School Rodeo, Santa Rosa, New Mexico. June 16—Desert Catalpa Club Hospitality...lull in the fighting ensued until August 18 when a posse of nine men, headed by Deputy Sheriff J. B. Simpson...suffered damage except to their reputations—the posse being criticized rather freely for the tactics employed...Receiving less than half the wage paid to common mine laborers, the charcoal camp employee lived in crude |  | | Journal (article/letter/editorial) | | (Altburg). Associated minerals are: hematite, magnetite, titanite, götzenite, clinopyroxene, nepheline...borehole at the Korshunovskoye boron deposit, Irkutsk district, Siberia, Russia. Occurrence: In dolomite marble...Bi3+24Cr6+8O57(OH)6•3H2O T RIGONAL Locality: São José mine, Lavra da Posse, São José de Brejaúba, Conceição do Mato...Mato Dentro County, Minas Gerais, Brazil. Occurrence: Associated minerals are: pucherite, schumacherite...)3, a new mineral from Brejaúba, Minas Gerais, Brazil: description and crystal structure. American Mineralogist |  | | Journal (article/letter/editorial) | | massive sulfide (VMS) deposit in the Golden Grove district, Western Australia. A deep weathering profile...the Gossan Hill deposit within the Golden Grove district, followed by the discovery of what was thought... 1988; Whitford and Ashley 1992). No massive magnetite mineralization has been identified, in contrast...of the Golden Grove Formation. The Golden Grove district and the Archean VMS deposits have been subjected...from bleached kaolinitic saprolite near Scuddles mine indicate an older weathering event assigned pre-late |  | | Report (issue) | | Blue Ridge province _____________ _ Spruce Pine district ____________ Madison County and Haywood County...County _____________________ _ Zirconia district ___________ ----Macon, Jackson, and Clay Counties __ ----...Monazite localities-Continued South America-Continued Brazil-Continued Beach placers _________________________...and Idaho. Most of the world output has come from Brazil, India, and the Republic of South Africa, but 12...beaches and elevated bars along the southern coast of Brazil were the world's main source of commercial monazite |  | | Journal (issue) | | CLOSE-UPS About those who write for Desert 16 LOST MINE Lost Blue Bucket Gold By JOHN D. MITCHELL 17 ...Valley 18 August 15-17—Quay County Sheriff's Posse Rodeo. Tucumcari, New Mexico. CONTEST Prizes for...children were entitled to schooling, a school district was formed and fine modern class rooms were built...seen everywhere. Contra Costa county's mounted posse has taken prizes in parades for their costumes and...wood known as Jet is likely to be found in—Copper mine dumps Quartz veins Iron deposits Coalmines 6—Yucca |  | | Book | | deposits. Lode mining began in 1852 at the Washington Mine. Even with the discovery and working of the lode...The most productive district lode gold has been the French Gulch-Deadwood district of Shasta and Trinity...mining in northwestern California and the La Grange mine west of Weaverville was one of the largest hydraulic...sand. The black sand is generally principally magnetite, but some of the other minerals you will find... Hornblende 3.2 Garnet 30 Corundum 4.0 Magnetite a2. Silver rahe Gold 19.2 Due to its insolubility |  | | Journal (issue) | | area along US-6 between Spanish Fork and Price, UT. Mine dumps can be seen from the highway on the north...the Pleasant Valley Coal Company's Winter Quarters mine (famous for an explosion on May I", 1900, that killed...mineral species from the Middle Buttes/Cactus Gold Mine. Scorodite from the Shumake deposit was described...During the summers of 1987 and 1988 1worked at the mine as a summer student intern while working on my master's...Burnett, J. L., and Brady, J, 1990, Cactus Gold Mine, Kem County, California, California Geology, April |  | | Journal (issue) | | Mexico. Oct. 1 5-17—Luna county fair and Sh :riffs Posse rodeo, Deming, N< w Mexico. Oct. 15-17—Greenlee...HOUSE Desert Magazine's New Home Is Open LOST MINE New Clues to the Pegleg Gold By H. E. W. WILSON...we told you about the melting snow on the Santa Rosa mountains—and the pure snow water which filters...what this town is?" he growled at me. "This map of mine has a name for every dog-house for 300 miles and...sudden. I tried to figure it out. There's nothing to mine in that sand, and anyway, they were clearing the |  | | Journal (issue) | | :e. To the serious student of geology the and magnetite) deposited in the shalMichigan icon ranges, especially...the teresting rocks and minerals. Lake Superior district began in 1848; the Minerals are beautiful in themselves...Ramsay is over 3,500 feet in depth. In a typical mine the processes.s involved are :ts follows: the ore...(largely produced by the alteration of olivine) and magnetite. Specimen No. 2. Altered peridotite. The specimen...here we go to the Athens Mine. At the railroad track, due north of the mine shaft, is an outcrop of cherty |  | | Journal (issue) | | Gressman tom.gressman@minrec.org The Tintic District: Juab and Utah Counties, Utah...................COVER: CLINOCLASE, 3.9 cm, from the Mammoth mine, Tintic District, Utah. Rock Currier collection; Jeff Scovil...holds a sample of a pascoite group mineral at a mine in Grand County, Utah. Died, Alex Earl, 26 Jayson...over the American West. A trip to the Blue Bell mine near Baker, California, in 2016 was particularly...Phurcalite with brochantite, 2-mm view, from the Posey mine, San Juan County, Utah. Alex Earl collection and |
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