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  3. Mineral Resource Data System (MRDS)

El Rosario Perlite Deposit

Occurrence in Cuscatlan, El Salvador with commodity Perlite
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Host and associated rocks
  7. Nearby scientific data
  8. Ore body information
  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 10057211
MRDS ID TC01701
Record type Site
Current site name El Rosario Perlite Deposit

Geographic coordinates

Geographic coordinates: -88.90755, 13.77007 (WGS84)
Elevation 730
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Cuscatlan(province)

El Salvador(country)

North America(continent)

Land(continent)

Geographic areas

Country State
El Salvador Cuscatlan

Commodities

Commodity Importance
Perlite Primary

Comments on the commodity information

  • BULK DENSITY EXPANDED 120-240 G/L (7.5-15 LB/CU FT); BULK DENSITY RAW 1300 G/H (811 LB/CU A); AVERAGE DENSITY 157 G/L (2.8 LB/CU FT). MEETS ALL ASTM REQUIREMENTS FOR CONSTRUCTION PURPOSES.

Analytical data

Result 70.9% SIO2, 13.7% AL203, 1.9% FE2O3, 1.9%CAO, 0.5% MGO, 3.6% NA2O, 3.0% K2O, 3-4% H2O.

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic)
    Stratigraphic age (youngest) Pleistocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Glassy Rock > Obsidian
    Rock unit name Cuscatlan Formation
    Rock description Cuscatlan Formation
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyodacite

Nearby scientific data

(1) -88.90755, 13.77007
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Economic information

Ore body information

  • Thickness 30M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic
Significant No

Comments on the reserve resource information

  • ESTIMATED USING MIXIMUM AREA AND 25 M THICKNESS BY N. PAGE.

Comments on development

  • DETAILED MAPPING 1:10,000 AND 35 CORE BOREHOLES, TOTALLY 954 M DONE BY FEDERAL INSTITUTE FOR GEOSCIENCES AND NATURAL RESOURCES, GERMANY IN COLLABORATION WITH CENTRO DE ESTUDIOS E INVESTIGACIONES GEOTECNICAS OF EL SALVADOR (1975-1977)

Reference information

Bibliographic references

  • Deposit

    LORENZ, W., AND MULLER, P., 1982, PERLITE IN EL SALVADOR, CENTRAL AMERICA: NEW MEXICO BUREAU OF MINES AND MINERAL RESOURCES CIRCULAR 182, P. 103-107

  • Other Database

    CIMRI

  • Reserve-Resource

    LORENZ AND MILLER, 1982.

General comments

Subject category Comment text
Deposit AREA OF PERLITE: GREATER THAN 0 TO GREATER THAN 30 M THICK, ABOUT 2300 M LONG BY 790 M WIDE (MAXIMUM SIZE). AREA ON WEST: OF PERLITE 20 TO GREATER THAN 30 M THICK AND ABOUT 570 X 190 M (MAXIMUM SIZE). ORE ON EAST: 20 TO 30 M THICK AND ABOUT 114M X 160M (MAXIMUM SIZE). AREA = 129,960 SQ METERS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-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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