 | | Journal (article/letter/editorial) | | Provenance of Fossil and Recent Monazite Depositsin Brazil O. H. LEONARDOS, J•t. Abstract The study of m...quartziteswhereasthoseof Rio de Janeiro, Espirito Santo, and Bahia have the Tertiary clayishsedimentsof...from the mineral assemblages(see Leo- Espirito Santo,and Bahia. Over fifty papershave been written dealing...Janeiroand Espirito Santo,for instance,may carry mostof the easterncoastof Brazil, mainly alongthe up...variableamounts niques. of ilmenite,magnetite,zircon,spinel,sillimanite,and garnet. These horizonsare in generala |  | | Journal (issue) | | Articles The Golconda District, Minas Gerais, Brazil .................................................11.9 cm, from the Golconda I mine, Minas Gerais, Brazil Brice Gobin (Mineral Art) and Emanuele Marini (Nimeral...China, South Africa, Namibia, Chile, Peru, Bolivia, Brazil and Mexico. His first exchange of specimens with...September–October, 2019 The Golconda District Minas Gerais, Brazil Carlos Cornejo1 Andrea Bartorelli2 Wendell E. Wilson3...important specimen-producing districts in all of Brazil. INTRODUCTION The Golconda Pegmatite Field is a |  | | Journal (issue) | | Myanmar|Pyrite and other sulphides from Peru|Purple spinel from Badakhshan, Afghanistan| Windmill-cut topaz...Articles 708 Coloured Stone Mining and Trade in Brazil: A Brief History and Current Status By Aurélien...Collection V. L. Villani photo p. 758 Cover Photo: Brazil is the source of a variety of coloured stones,...pink diamonds (natural, synthetic and treated), spinel, What’s New corundum, alexandrite, tanzanite...topics, including diamond, tourmaline, demantoid, spinel, emerald, corundum and instrumentation. CMS oration |  | | Report (issue) | | though a minor source is baddeleyite, mined only in Brazil. Zircon is an accessory mineral in igneous, metamorphic...sillimanite, kyanite, andalusite, xenotime, green spinel, corundum, hematite, brookite, hornblende, and...Commercial deposits of heavy minerals are worked in Brazil, Australia, India, Ceylon, Egypt, the east and...Florida. Six other alluvial samples included 1 from Brazil, 2 from Australia, 1 from Egypt, 1 from the Panamanian...Canal Zone, and 1 from Ceylon. The sample from Brazil was contributed by William D. Johnston, Jr., of |  | | Report (issue) | | Monazite localities-Continued South America-Continued Brazil-Continued Beach placers _________________________...Rio de Janeiro _____________________ _ Espirito Santo _____________________ _ Bahia ____________________________...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...international importance. Stream placers in the interior of Brazil are virtually unexplored; they may constitute an |  | | 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 | | da Barita by Ministério das Minas e Energia in Brazil; and the numerous commodity profiles and reports...Considerations damage, Soviet Union Canada Chrysotile Brazil Zimbabwe Chrysotile South Africa Amosite Crocidolite...and gem materials in the past. Brazil Production of asbestos in Brazil, which has reached about 200,000...USA (a) Turkey India West Germany Morocco Italy Brazil (b) Iran (c,e) United Kingdom Romania (e) Irish...diaspore and minor gibbsite. Paleozoic 20 Guinea Brazil Australia Jamaica India Guyana Cameroon Greece |  | | Book | | economic growth in countries such as China, India, and Brazil. Petroleum and natural gas continue to be the most...due to its high titanium content. Mineral of the spinel group with both divalent and trivalent iron: Fe2+(Fe3+)2O4...semimetallic Streak color Dark brown Mineral of the spinel group. Most important chromium ore; see Box 3.8...particularly massively in emerging countries such as Brazil, India, and above all China. If a country’s infrastructure...tiny crystals such as corundum, perovskite, and spinel. Meteorite researchers refer to them as Ca–Al-rich |  | | Book (volume) | | Nhambicuara Indians BT Indians of South America—Brazil NT Mamainde Indians Nambicuara language (May Subd...language Nhambicuara language BT Brazil—Languages Indians of South America—Brazil— Languages NT MamaindS dialect...literature (Not Subd Geog) Nathan Brazil (Fictitious character) USE Brazil, Nathan (Fictitious character)...Monument (Ariz.) — Brazil NT Itaquatiara do Ingi Monumento Arqueologico Nacional (Brazil) — California NT...Cumberland Road National Order of Merit Medal (Brazil) USE Ordem do M6rito National Organ and Tissue |  | | Book (volume) | | oxide, quartz, silica, thoria, zirconia, lime, spinel, kyanite, sodium aluminate, dolomite, boric acid...olivine [(Mg.Fe)2SiO,], pyroxene [(Ca,Mg)SiOs]. spinel (MgALO,), and garnet (Mg3Al,Si;0,2). These are...of corundum with magnetite or with hematite and spinel. Emery has been used for centuries as an abrasive...corundum. See CORUNDUM; HEMATITE; MAGNETITE; SPINEL. Since early times emery has been recovered from...are regions (such as California, Australia, and Brazil) where the disintegrated granite (locally Engineering |
|
