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Guadalupe Numero 2

Occurrence in Baja California, Mexico with commodities Manganese, Graphite, Silica
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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. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Reserves and resources
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10049234
MRDS ID MX00501
Record type Site
Current site name Guadalupe Numero 2
Related records 10278677

Geographic coordinates

Geographic coordinates: -116.25083, 32.48341 (WGS84)
Relative position 21 KM SW OF LA RUMEROSA, 43 KM SE OF TECATE.

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

San Diego(quadrangle 1:250,000 scale)

Geographic areas

Country State
Mexico Baja California

Comments on the location information

  • ESTIMATED TO NEAREST 1 MINUTE.

Commodities

Commodity Importance
Manganese Critical Primary
Graphite Critical Secondary
Silica Secondary

Comments on the commodity information

  • EXTREMELY HIGH SILICA CONTENT.

Materials information

Materials Type of material
Graphite Ore
Psilomelane Ore
Pyrolusite Ore
Garnet Gangue
Quartz Gangue

Analytical data

Result COMPOSITE SAMPLE OF MN VEIN: 16.56% MN, 59.95% SILICA, 1.67% C, 1.10% PB, TRACE CU, 0.10% ZN, 6.00% AL, 3.11% FE
Result COMPOSITE SAMPLE OF GRAPHITE LENSES: 10.70% C.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -116.25083, 32.48341
ListMap

Economic information

Ore body information

  • Strike N 10 E TO N 15 W
    Dip 63-72 W
    Thickness 5M
    Length 600M
    Depth to bottom 20M

Controls for ore emplacement

  • 1> Proximity Of Granitic Intrusive, 2> Planes Of Schistosity, 3> Impermeable Quartzite Layer In Schist.

Comments on the geologic information

  • COUNTRY ROCK IS MUSCOVITE-QUARTZ-FERROMAGNESIAN-SCHIST INTRUDED BY HORNBLENDE GRANITE. SCHIST FORMATION IS CUT BY NUMEROUS THIN (1-3 CM) QUARTZ VEINLETS, MN-GRAPHITE LAYERS, AND GARNET-TOURMALINE-PEGMATITE VEINS INTRUDED ALONG PLANES OF SCHISTOSITY. MAIN MN-GRAPHITE ZONE APPEARS TO HAVE BEEN LOCALIZED BY AN IMPERMEABLE QUARTZITE LAYER 1 M WIDE IN SCHIST. SCHIST CORRELATED TO SIMILAR ROCKS IN THE U.S. OF TRIASSIC AGE. GRANITE CORRELATES ROCKS FOUND IN THE SIERRA NEVADA BATHOLITH.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both
Deposit size Small
Significant No

Reserves and resources

  • Type In-situ
    Estimate year 1956
    Total resources 9000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Manganese Mn 16.6 wt-pct Manganese Major 1956
    Silica SiO2 60 wt-pct Silica Minor 1956

Comments on the reserve resource information

  • OUTCROP STRIKE LENGTH: 600 M; AVE. WIDTH OF VEIN: 2.5 M; PROB. MINIMUM DEPTH: 20 M; DENSITY OF ORE + QUARTZ GANGUE: 3 G/CC.

Comments on the workings information

  • FIVE OPEN CUTS.

Reference information

Bibliographic references

  • Deposit

    MAPES-VASQUEZ, E., 1956, EL YACIMIENTO DE MANGANESO DE GUADALUPE NO. 2, BAJA CALIFORNIA IN GONZALEZ R., J., (ED.), 1956, SYMPOSIUM SOBRE YACIMIENTOS DE MANGANESO, TOMO III: CONGRESO GEOLOGICO INTERNACIONAL, XX, MEXICO, 1956, P. 157-168

General comments

Subject category Comment text
Deposit MN-GRAPHITE VEIN IN MUSCOVITE SCHIST. 1.5 TO 5.0 M WIDE. AVE: 2.5 M. OUTCROPS TRACEABLE FOR 600 M ALONG STRIKE. VEIN FOLLOWS SCHISTOSITY: N 10 E TO N 15 W, 63-72 W. MINERALIZATION CONSISTS OF PYROLUSITE, PSILOMELANE AND MINOR BRAUNITE ASSOCIATED WITH FINELY DISSEMINATED GRAPHITE. MN OXIDES FORM A THIN FILM ON CRYSTALS OF QUARTZ, FERROMAGNESIAN MINERALS AND GARNETS. LENSES OF MASSIVE GRAPHITE UP TO 1 M WIDE OCCUR ALONG HANGING-WALL OF VEIN, ASSOCIATED WITH A THIN (2 CM) BED OF FERRUGINOUS SANDSTONE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1988 Leonard, Kenneth R. (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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