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Canaan Nepheline Syenite

Prospect in Rio De Janeiro, Brazil with commodity Feldspar
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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. Economic information about the deposit and operations
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10023545
MRDS ID I000656
Record type Site
Current site name Canaan Nepheline Syenite

Geographic coordinates

Geographic coordinates: -43.26559, -22.74741 (WGS84)
Relative position IN THE FOOTHILLS OF PETROPOLIS RANGE, 40 KM FROM THE CENTER OF RIO DE JANEIRO IN THE MUNICIPALITY OF DUQUE DE CAXIAS.

Site location context

Political divisions (FIPS codes)

Rio De Janeiro(province)

Brazil(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Brazil Rio De Janeiro

Commodities

Commodity Importance
Feldspar Primary

Materials information

Materials Type of material
Albite Ore
Nepheline Ore
Biotite Gangue
Pyrite Gangue
Pyrrhotite Gangue
Zircon Gangue

Analytical data

Result TYPICAL ANALYSIS: 0.8% CAO, 6.7% K2O, 9.1% NA2O, 22.9% AL2O3, 55.6% SIO2, 0.09-3.5% FE2O3, 1.0% LOI.

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Alkalic Intrusive Rock > Nepheline Syenite

Nearby scientific data

(1) -43.26559, -22.74741
ListMap

Economic information

Comments on the geologic information

  • THE LITCHFIELDITE HAS A GNEISSIC TEXTURE.

Economic information about the deposit and operations

Development status Prospect
Commodity type Non-metallic
Significant No

Comments on the reserve resource information

  • RESERVES ASSUMMED A RECOVERY OF 80% AND DENSITY OF 2.6 T/CUBIC M.

Reference information

Bibliographic references

  • Deposit

    DE FERRAN, AXEL, 1984, THE CANAAN NEPHELINE SYENITE VENTURE, IN 5TH INTERNATIONAL INDUSTRIAL MINERALS CONFERENCE: LONDON, METAL BULLETIN PLC, P. 101-104

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit THE LITCHFIELDITE IS APPROXIMATELY 50% FELDSPAR (LARGELY MICROCLINE AND PERTHITE), 20% NEPHELINE, AND 15% ALBITE. THE DEPOSIT HAS A DEEP SOIL COVERING AND IS SAID TO BE SIMILAR TO THE BLUE MOUNTAIN NEPHELINE SYENITE DEPOSIT IN CANADA.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1981 Orris, Greta 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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