Brazil Mine

8/4/2019 Brazil Mine

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MINING REPORT ON BRAZILMINING REPORT ON BRAZIL

bybyKalilKalilK.K. ElawarElawar

edited by J. Wolfedited by J. WolfKuehnKuehn


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AbstractAbstract

The region in which coloured gems are produced, as well as the major

geological features are shown in maps and tables for different kinds

of gems: emerald, chrysoberyl, aquamarine, tourmalines, imperial topazand amethyst.

Gems are still found at random in Brazil and its mining techniques are

mostly very primitive. Only very few working mines make use of modernmining techniques.

Brazil continues to have an immense gem potential. The country now offers

a favorable atmosphere for the entry of efficient and well organized gem mi-

ning companies, due to recent deregulations by the government andthe advances in geological and geophysical prospecting.


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Regions with Potential for Gem Production in BrazilRegions with Potential for Gem Production in Brazil

Areas of low potential

Areas of high potential


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Gem Potential in BrazilGem Potential in Brazil

40% of Brazilian territory has crystalline rocks which

may have pegmatite deposits.

There has been only limited research on gems in Brazil.

The discovery of large deposits has almost always been

accidental.

The mining of pegmatite gems has been done with

rudimentary techniques, with the deposits giving a

low yield.


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Eastern PegmatiteProvince

PROJETO LESTE - FASE 1

pegmatites(441)


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ProductionProduction

Modes of OccurrenceModes of Occurrence

river

alluvial deposit

alluvial deposit

colluvial deposit

derrama

gem pocket

pegmatite

pocket


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Extraction TechniquesExtraction Techniques

ProductionProduction

Lowlands (alluvial) : pits, suction pumps, trenches.

Slopes (colluvial) : pits, water cannons, trenches, pipes.

Plateaus (alluvial) : pits, pipes, trenches.

Pegmatite deposits (vein) : galleries, pipes, trenches.


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Regions with production of gemstones

in Minas Gerais

Am

Tm

Aq

Alex/Cats

Em

Tp

AqTm

Tm

Aq


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Production Regions :Production Regions : where gems are being mined.

Areas of Occurrence:Areas of Occurrence: where gems are reported and

there is no mining activity, orwhere production is small and

discontinuous.


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EMERALDEMERALD


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Production Regions:Production Regions:

Bahia - Carnaba, Salininha

Gois - Santa Terezinha

Minas Gerais - Nova Era (Capoeirana, Belmont)

Main Areas of Occurrence:Main Areas of Occurrence:

Bahia - Vitria da Conquista, Brumado

Tocantins - Monte Santo (recent discovery - May/1997)

Minas Gerais - So Domingos do Prata, Antnio Dias, So Jos

da Safira


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CHRYSOBERYLCHRYSOBERYL

AlexandriteAlexandrite / Cat/ Cats eyes eye


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Minas Gerais - Nova Era, Antnio Dias

Malacacheta (Crrego do Fogo)

Padre Paraso (Fasca, Gil, Cilindro)

Santo Antnio do Jacinto

Esprito Santo - Colatina (Crrego Alegre)


Bahia - Itamaraju, Teixeira de Freitas, Itanhm, Prado


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AQUAMARINESAQUAMARINES


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Minas Gerais - Tefilo Otoni (Marambaia, Catugi)

Pedra Azul

Medina

Coronel Murta

Araua - Capelinha

Governador Valadares

Bahia - Itamb Rio de Janeiro - Itabapoana

Rio Grande do Norte - So Tom

Acar

Lages Pintadas Paraba - Serid

Pedra Lavada

So Mamede


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TOURMALINESTOURMALINES


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Minas Gerais - Governador Valadares (Cruzeiro, Golconda,

Santa Rosa e Jonas).

Araua-Salinas (Xanda, Limoeiro, Morro

Redondo, Toca do Ona).

Paraba - Salgadinho (Batalha).


Cear - Solonpole, Quixeramobim, Quixad.

Gois - Minau, Peixe, Formoso, Crixs, Xambioc, Pium.


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AMETHYSTAMETHYST


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Rio Grande do Sul - Santa Maria, Ira

Par - Alto Bonito, Vila Esperana

Bahia - Jacobina (Grota Coxo)

Gois - Minau

Minas Gerais - Uberaba.


Minas Gerais - Itamarandiba

Gois - Cavalcanti


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IMPERIAL TOPAZIMPERIAL TOPAZ


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Production RegionsProduction Regions :


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is work was coordinated by Kalil K. Elawar and Jorge Pereira Raggi (Geoconmica Minas Ltda.

d executed by the geologists Luciana Felcio Pereira and Nelson Baptista Oliveira de Resende

e team was also composed by the following people: Leonardo Pittella, Lcia E. Vida Ampli,

trcia Hamdan and Micheline Vicente.

ecial Thanks to: Otvio Curtiss Silviano Brando, Joo Henrique Grossi Sad, Roberto Cardoso

azilian Company of Research in Mineral Resources - CPRM.

e technical information presented was acquired from K. Elawar Ltd., Geoconmica Minas Ltd. a

m Brazilian and international bibliography about gems deposits and occurrences.

------------ K. Elawar Ltda. -------------------------- Phone: 55-33-522.4251 Fax: 55-33-521.5028Rua Epaminondas Otoni, 689 - cj.401/2 - Tefilo Otoni - MG - Brazil - Postal Code: 39800-000


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MINING REPORT ON BRAZILMINING REPORT ON BRAZIL


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Brazil Mine

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