Minas gerais map

    • The Geology of Central Minas Geraes, Brazil

      FIG. I.-Map showing the location of the iron-ore district of Minas Geraes, Brazil are being discovered today the still more remarkable deposits of high-grade iron ore which seem destined to develop a great industry in the future. GENERAL GEOLOGY GENERAL DISTRIBUTION, SUCCESSION, AND STRUCTURE OF FORMATIONS


    • [PDF File]Gem Pegmatites of Minas Gerais, Brazil: The Tourmalines of ...

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      The first article in this series discussed the history of gem miningin Minas Gerais from the colonialperiod to thepresent, the nature of granitic pegmatites and derived deposits yielding gemstones, and the important deposits of aquamarine and other gem beryls.


    • [PDF File]QUADRILÁTERO FERRÍFERO, MG, BRAZIL: REGIONAL CHARACTERISTICS ...

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      State of Minas Gerais, this area of about 7.000km. 2 is surrounded by crests with altitudes of 1.300-1.600m, belonging to four mountain ranges (FIG. 1). Rock formations in QF date from the Archean to the Paleo-proterozoic (3.31.7Ga), and - represent meaningful processes in the Earth’s evolution. Briefly, its geodiversity includes




    • [PDF File]Chrysoberyl and Alexandrite from Pegmatite Districts

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      CHRY SOBERYL AND ALEXANDRITE FROM THE PEGMATITE DISTRICTS OF MINAS GERAIS, BRAZIL. By Keith Proctor. This fourth article in the author's series on the pegmatite districts of Minas Gerriis, Bmzil, focuses on chrysoberyl, particr~larly the rare but coveted varieties cat's-eye and alexandrile.


    • [PDF File]USGS Publications Warehouse

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      ferrÍfero, minas gerais, map variations, scale 000 datum is mean sea level quadrilÁtero brazil 10 15 kilometers 5 miles . created date: 4/18/2011 7:49:19 pm ...


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