1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Tocantins Complex Chromite

Producer in Goias, Brazil with commodities Chromium, Platinum, Rhodium, Palladium, Gold, Copper, Nickel
Map
XML
JSON
KML
B
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. Geologic structures
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10038999
MRDS ID M046501
Record type Site
Current site name Tocantins Complex Chromite

Geographic coordinates

Geographic coordinates: -48.4574, -14.36077 (WGS84)
Relative position 248 KM N. N. W. OF ANAPOLIS, 15 KM NORTH OF NIQUELANDIA

Site location context

Political divisions (FIPS codes)

Goias(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Goias

Commodities

Commodity Importance
Chromium Critical Primary
Platinum Critical Primary
Rhodium Critical Tertiary
Palladium Critical Tertiary
Gold Tertiary
Copper Tertiary
Nickel Critical Tertiary

Comments on the commodity information

  • SAMPLES ANALYZED FOR PLATINUM METALS GAVE CONSISTANT RESULTS SUGGESTING THAT PLATINUM METALS ARE VERY FINELY DISPERSED

Materials information

Materials Type of material
Augite Ore
Brucite Ore
Bytownite Ore
Chalcopyrite Ore
Chromite Ore
Chrysotile Ore
Dunite Ore
Hematite Ore
Ilmenite Ore
Magnetite Ore
Pentlandite Ore
Pyrrhotite Ore
Talc Ore

Analytical data

Result TABLE 2.-ANALYSES OF PLATINUM-BEARING CHROMITITE SAMPLES FROM THE TOCANTINS COMPLEX, NIQUELANDIA, GOIAS, BRAZIL\n(ANALYSTS: PT METALS, L. B. RILEY, W. D. GOSS, AND JOSEPH HAFFTY; AU, W. D. GOSS AND J. A. THOMAS; NI, CLAUDE HUFFMAN, JR., AND J. A. THOMAS; AND SEMIQUANTITATIVE SPECTROGRAPHIC DATA, B. W. LANTHORN, U.S. GEOL. SURVEY. \nABBREVIATIONS: G, GREATER THAN 10 PERCENT; L, DETECTED; N, NOT DETECTED)\n 1 2 2A 2B 3 4 4A 4B 5\nQUANTITATIVE ANALYSIS (PARTS PER MILLION)\nPD 0.14 0.30 0.29 0.31 0.037 0.29 0.32 0.31 0.078\nPT .35 2.86 2.58 2.43 .098 1.49 1.44 1.40 .047\nRH .057 .26 .36 .32 .025 .23 .25 .22 *.005\n .55 3.42 3.23 3.06 .160 2.01 2.01 1.93 .13\nAU *.1 .2 *.1 *.1 .05\n* = LESS THAN \n1. W44D-2, MORE WEATHERED FRACTION OF CHANNEL SAMPLE ACROSS CHROMITITE LENSES AND PODS IN OUTCROP ON SLOPE; LENGTH OF CHANNEL 0.6 M, EX\n

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -48.4574, -14.36077
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Horizon Trends N - S

Ore body information

  • General form DISCONTINOUS TABULAR LENSES
    Strike N 10 E
    Dip 40 W
    Thickness 1.98M
    Length 1899.51M

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1970

Mining district

District name Niquelandia

Comments on the reserve resource information

  • 1 = CR IN FRAGMENTS AND SOIL 2 = 4,536 ST CR PER METER OF DEPTH 3 = 500 FT DEPTH X 5511.6 ST/M X 0.0508 TOZ/ST + 0.0508 X 8,267

Comments on development

  • ECON.COM: CHROMITE CONCENTRATED IN LENSES, DISCONTINUOUS LAYERS, AND PODS IN A DISCONTINUOUS TABULAR ZONE 2 - 5 M THICK.

Reference information

Bibliographic references

  • Deposit

    WHITE, R. W., MOTTA, J. & ARAUJO, V. A., 1971, PLATINIFEROUS CHROMITITE IN THE TOCANTINS COMPLEX, NIQUELAN DIA, GOIAS, BRAZIL, U. S. GEOL. PROF. PAPER 750 - D, P. D26 - D33

  • Deposit

    OLIVA E VIEIRA, 1973, PERFIL ANALITICO DA PLATINA: MINISTERIO DAS MINAS E ENERGIA BOLETIM 19, P. 3, 4

  • Deposit

    1971 DIREXPL T. P. THAYE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1975 Balcom, Raymond H. U.S. Geological Survey
Updater 01-NOV-1987 Orris, Greta J. U.S. Geological Survey

Beyond USGS

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

Maps centered on this site