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La Limena

Past Producer in Sonora, Mexico with commodities Antimony, Gold
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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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Production statistics
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10104182
MRDS ID MX00452
Record type Site
Current site name La Limena
Related records 10304827

Geographic coordinates

Geographic coordinates: -112.58989, 30.73793 (WGS84)

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

Geographic areas

Country State
Mexico Sonora

Comments on the location information

  • ESTIMATE TO WITHIN 0.5 KM.

Commodities

Commodity Importance
Antimony Critical Primary
Gold Primary

Materials information

Materials Type of material
Gold Ore

Alteration

  • (Local) Wall Rock Of Main Ore Bodies Bleached For As Much As 50 Cm From The Vein.

Analytical data

Result MOST OF THE ORE CONTAINED ONLY 5-15% SB
Result SOME ORE COULD BE HAND-SORTED TO SHIPPING GRADE PRODUCT CONTAINING MORE THAN 40% SB.

Mineral occurrence model information

Model code 180
USGS model code 27d
Deposit model name Simple Sb (veins, pods, etc)

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone
    Rock unit name Monos Formation
    Rock description Monos Formation
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Jurassic

Nearby scientific data

(1) -112.58989, 30.73793
ListMap

Economic information

Ore body information

  • Strike N 20-70 W
    Dip 17-78 SW
    Thickness 1M
    Length 230M
    Width 60.4M
    Depth to bottom 60.4M

Controls for ore emplacement

  • Ore Bodies Controlled Entirely By Strike And Dip Of Vein. Best Ore Found In More Flatly Dipping And More Northerly Striking Parts Of Vein.

Comments on the geologic information

  • VEIN IS CUT BY SIX SMALL FAULTS, ON FIRST TO THIRD MINE LEVELS. FAULTS STRIKE NE TO NW AND DIP MODERATELY TO THE E AND W. ALL ARE OF SMALL DISPLACEMENT. EXCEPT FOR INCONSPICUOUS OUTCROP ABOUT 100 M E OF THE MAIN SHAFT, VEIN WAS ENTIRELY COVERED BY GRAVELS LOCALLY UP TO 3-4 M THICK.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name El Antimonio/La Montana

Production statistics

  • Year 1943
    Period -1943
    Material ORE SB
    Accuracy Estimate
    Description Cp_Grade: ^40% Sb
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Antimony Antimony 40wt-pct

Comments on the production information

  • TOTAL PRODUCTION (BEFORE 1943) ESTIMATED AT 2,000 TO 5,000 TONS OF HIGH-GRADE SHIPPING ORE (GENERALLY HAND-SORTED ORE CONTAINING 40-45% SB).

Workings at the site

  • Type of workings Underground
    Length 1000M
    Overall depth 60.4M

Comments on the workings information

  • SYSTEMATICALLY DEVELOPED FROM 5 MAIN LEVELS: 15 M, 24.5 M, 33 M, 47 M, AND 56.5 M BELOW SURFACE. LEVELS AND SUBLEVELS CONTAIN ABOUT 1,000 M OF DRIFTS AND HUNDREDS OF METERS OF STOPES, RAISES, AND WINZES. LOWEST MINE LEVEL IS JUST ABOVE WATER TABLE.

Comments on development

  • ONE OF THE MOST PRODUCTIVE MINES IN THE DISTRICT. IN 1943 IT WAS PRODUCING ABOUT 1 TON OF HIGH-GRADE ORE AND 3 TONS OF MILLING ORE PER DAY.

Reference information

Bibliographic references

  • Deposit

    WHITE, D.E. AND GUIZA, REINALDO, 1949, ANTIMONY DEPOSITS OF EL ANTIMONIO DISTRICT, SONORA, MEXICO: U.S. GEOLOGICAL SURVEY BULLETIN 962-B, P.100-101, PLATES 15, 17

  • Production

    WHITE AND GUIZA, 1949.

General comments

Subject category Comment text
Deposit SB-BEARING VEIN CUTS ACROSS BEDDING AT LOW TO MODERATE ANGLES. KNOWN LENGTH: 230 M. WIDTH: 10 CM - 1.0 M, AVE. 40 CM. MINED TO VERTICAL DEPTH OF 60.4 M. VEIN CONSISTS OF BANDED COARSE-GRAINED QUARTZ, ANTIMONY OXIDES, AND INCLUSIONS OF WALL ROCK ORIENTED PARALLEL TO THE WALLS. NATIVE GOLD IN QUARTZ NEAR ANTIMONY ORE.
Deposit INFLUENCE OF DIP VARIATIONS ON ORE DEPOSITION: AVE. DIP OF VEIN IN WORKINGS NW OF MAIN SHAFT IS 41 DEGREES ON THE FIRST LEVEL, 45 ON THE SECOND LEVEL, 55 ON THE THIRD LEVEL, AND 70 ON THE FIFTH LEVEL. NO ORE WAS FOUND BELOW THE THIRD LEVEL WEST OF THE SHAFT. AVE. DIP IN WORKINGS EAST OF SHAFT IS 68 DEGREES ON THE THIRD LEVEL, 66 ON THE THIRD SUBLEVEL, 64 ON THE FOURTH LEVEL, AND 65 ON THE FIFTH LEVEL. MOST ORE FOUND BELOW THIRD LEVEL EAST OF THE SHAFT, SUGGESTING THAT EVEN SMALL VARIATIONS IN DIP HAD A SIGNIFICANT EFFECT ON ORE DEPOSITION. ; INFO.SRC : 1 PUB

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1987 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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