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  3. Mineral Resource Data System (MRDS)

Unnamed Amethyst 20

Producer in Artigas, Uruguay with commodity Gemstone
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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. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10062200
MRDS ID TC35507
Record type Site
Current site name Unnamed Amethyst 20

Geographic coordinates

Geographic coordinates: -56.63332, -30.40572 (WGS84)
Location accuracy 10000(meters)

Site location context

Political divisions (FIPS codes)

Artigas(province)

Uruguay(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Uruguay Artigas

Comments on the location information

  • AROUND ARTIGAS, TO WEST, SOUTH OF ROUTE 30.

Commodities

Commodity Importance
Gemstone Primary

Comments on the commodity information

  • UP TO 1 M DIAMETER GEODES OF 100-500 KG, AVERAGE 10 CM, AMETHYST CRYSTALS UP TO 10 CM, 10% OF CRYSTALS VIOLET, OTHER 90% PALE VIOLET, INCLUSIONS OF PYRITE.

Materials information

Materials Type of material
Agate Ore
Chalcedony Ore
Quartz Ore

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Rock unit name Arapey Formation
    Rock description Arapey Formation
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -56.63332, -30.40572
ListMap

Economic information

Comments on the geologic information

  • SECTION TOP TO BOTTOM: 50 M OF PAHOEHOE BASALT (NO GEODES), 40 M VARIABLE BUT MAJOR PAHOEHOE (GEODES OF IRREGULAR FORM); 40-50 M AA BASALT (WELL DEVELOPED AMETHYST RICH GEODE ZONE); 6 M OF SAND DUNE SANDSTONES; 10 M + OF COLUMNAR BASALT AND PAHOEHOE (NO GEODES) ; SANDSTONES OF TACUAREMBO FM.

Economic information about the deposit and operations

Development status Producer
Commodity type Non-metallic
Significant No

Mining district

District name Artigas

Comments on the production information

  • ACTIVE PRODUCTION IN 1987.

Comments on the reserve resource information

  • RESERVES ARE FOR ARTIGAS PROVINCE.

Reference information

Bibliographic references

  • Deposit

    BOSSI , JORGE, 1978, RECURSOS MINERALES DEL URUGUAY: ED. DANIEL ALJANATI, IMPRESORA REX S.A., MONTEVIDEO, URUGUAY, 348 P

  • Other Database

    CIMRI

  • Reserve-Resource

    BOSSI (1978).

General comments

Subject category Comment text
Deposit FEW MASSIVE CHALCEDONY NODULES, GOOD INTRICATE NODULES OF AGATE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1992 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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