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Chico Dentista

Past Producer in Minas Gerais, Brazil with commodity Mica
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Ownership information
  13. Reserves and resources
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10066242
MRDS ID TC42359
Record type Site
Current site name Chico Dentista
Alternate or previous names Mexeriqueira Group

Geographic coordinates

Geographic coordinates: -41.94363, -20.69218 (WGS84)
Location accuracy 1000(meters)
Relative position 11 KM SSW OF ESPERA FELIZ, 4 KM W OF CAIANA.

Site location context

Political divisions (FIPS codes)

Minas Gerais(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Minas Gerais

Comments on the location information

  • ON MORRO HICKS.

Commodities

Commodity Importance
Mica Primary

Materials information

Materials Type of material
Muscovite Ore
Biotite Gangue
Kaolin Gangue
Microcline Gangue
Plagioclase Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Plutonic Rock > Pegmatite

Nearby scientific data

(1) -41.94363, -20.69218
ListMap

Economic information

Ore body information

  • General form IRREGULAR WITH ARM-LIKE OFF SHOOTS
    Thickness 15M
    Length 35M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No
Discovery year 1922

Mining district

District name Espera Feliz

Ownership information

  • Type Owner
    Owner Francisco Martins De Oliveira
    First year 1940

Comments on the production information

  • ORE (1) AND (2) ARE MINE-CRUDE MICA; UP TO 500 KG AND UP PER MONTH (1944).

Reserves and resources

  • Type In-situ
    Estimate year 1944
    Commodity Subtype Grade units Group Importance Year
    Mica Mic 2 wt-pct Mica Major 1944

Comments on the reserve resource information

  • ORE IS PEGMATITE

Comments on the workings information

  • ACCESSIBLE WORKINGS IN 1944 TOTALLED 601 M OF WHICH 181 M WERE IN PEGMATITE. THESE REPRESENT ONLY 50% OF THE TOTAL WORKINGS.

Reference information

Bibliographic references

  • Deposit

    PECORA, W.T., KLEPPER, M.R., LARRABEE, D.M., BARBOSA, A.L.M., AND FRAYHA, RESK, 1950, MICA DEPOSITS IN MINAS GERAIS, BRAZIL: U.S. GEOLOGICAL SURVEY BULLETIN 964-C, P. 205-305.

  • Deposit

    LARRABEE, D.M., KLEPPER, M.R., AND FRAYHA, RESK, 1944, THE CHICO DENTISTA GROUP OF MICA MINES, MUNICIPIO OF ESPERA FELIZ, MINAS GERAIS, BRAZIL: U.S. GEOLOGICAL SURVEY UNPUBLISHED REPORT, 19 P.

  • Other Database

    CIMRI

  • Production

    PECORA ET AL (1950); UNPUBLISED DATA.

General comments

Subject category Comment text
Deposit IRREGULARLY SHAPED DISCORDANT PEGMATITE IN LOCALLY GARNET-MICA SCHIST AND GNEISS; MICA CONCENTRATIONS IN ROLLS OF HANGING WALL CONTACT.
Deposit Discovery Year: EARLY 1920'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1994 Page, Norman J. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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