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Monte Amarillo

Producer in Salta, Argentina with commodities Boron-Borates, Gypsum-Anhydrite, Arsenic
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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. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10024185
MRDS ID I010134
Record type Site
Current site name Monte Amarillo

Geographic coordinates

Geographic coordinates: -66.69112, -24.71139 (WGS84)
Elevation 3900
Location accuracy 5000(meters)
Relative position 15 KM S OF THE SIJES MINING CAMP ON THE WESTERN SLOPE OF THE SIJES RANGE.

Site location context

Political divisions (FIPS codes)

Salta(province)

Argentina(country)

South America(continent)

Land(continent)

Geographic areas

Country State
Argentina Salta

Commodities

Commodity Importance
Boron-Borates Primary
Gypsum-Anhydrite Tertiary
Arsenic Critical Tertiary

Materials information

Materials Type of material
Ulexite Ore
Orpiment Gangue
Realgar Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Mudstone
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Mudstone > Claystone
    Rock unit name Sijes Formation
    Rock description Sijes Formation
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Evaporite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff

Nearby scientific data

(1) -66.69112, -24.71139
ListMap

Economic information

Ore body information

  • Strike NNE-SSW
    Dip 30 (AVE)
    Length 2500M

Comments on the geologic information

  • THIS IS THE LARGEST DEPOSIT IN THE PASTOS GRANDES DEPRESSION AND THE LARGEST HYDROBORACITE RESERVE IN THE WORLD.

Economic information about the deposit and operations

Development status Producer
Commodity type Both
Deposit size Small
Significant No

Mining district

District name Serrania De Sijes

Reference information

Bibliographic references

  • Deposit

    ALONSO, R.N., 1986, OCCURRENCE, STRATIGRAPHIC POSITION, AND GENESIS OF THE BORATE DEPOSITS OF THE PUNA REGION OF ARGENTINA: SALTA, UNIVERSIDAD NACIONAL DE SALTA, UNPUBLISHED PH.D DISSERTATION, 196 P

General comments

Subject category Comment text
Deposit THE DEPOSIT IS IN THE LOWER THIRD OF THE SIJES FM AND OCCURS OVER A STRATIGRAPHIC INTERVAL OF 137 M. THE HYDROBORACITE IS WHITISH YELLOW AND RESISTANT TO EROSION. THE GANGUE IS LARGELY TUFFACEOUS. INDIVIDUAL BEDS OF HYDROBORACITE ARE UP TO 2 M THICK (WHERE TECTONICALLY THICKENED). THE BASIN IS ZONED LATERALLY FROM HYDROBORACITE IN/NEAR THE MIDDLE OF THE BASIN TO HYDROBORACITE + GYPSUM, TO GYPSUM + HYDROBORACITE, TO CLASTIC SEDIMENTS AT THE PERIPHERY. ALONSO ESTIMATES THAT THE B-MINERALIZING PULSE LASTED 600,000 YEARS.

Reporter information

Type Date Name Affiliation Comment
Reporter 02-NOV-94 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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