Lost Horse Group

Past Producer in Pima county in Arizona, United States with commodities Copper, Silver, Gold, Molybdenum, Lead, Zinc
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Production statistics
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10037129
MRDS ID M030519
Record type Site
Current site name Lost Horse Group
Alternate or previous names Henshaw

Geographic coordinates

Geographic coordinates: -111.57737, 31.84234 (WGS84)
Elevation 1410
Relative position ON RIDGE NE OF FRESNAL CANYON SPRING.

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Baboquivari Peak(quadrangle 1:24,000 scale)

Sells(quadrangle 1:100,000 scale)

Nogales(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Brawley Wash(hydrologic unit)

Santa Cruz(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

BIA(Federal land areas administered by BIA)

Geographic areas

Country State County
United States Arizona Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 018S 007E 24 CENTER Arizona

Comments on the location information

  • MAY BE IN PAPAGO INDIAN RESERVATION. ; INFO FROM LAND.ST :1964

Commodities

Commodity Importance
Copper Primary
Silver Primary
Gold Primary
Molybdenum Primary
Lead Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Wulfenite Ore

Alteration

  • (Local) Oxidation To Shallow Depths Along Fault Zone

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock
    Rock unit name Pitoikam Formation
    Rock description Pitoikam Formation
    Stratigraphic age (youngest) Early Jurassic
    Stratigraphic age (youngest) Early Jurassic

Nearby scientific data

(1) -111.57737, 31.84234

Economic information

Controls for ore emplacement

  • Quartz-Calcite Veins In Strong Fault Zone

Economic information about the deposit and operations

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

Production statistics

  • Year 1938
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^3% Cu, 64 Oz/T Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 1807g/mt
    Ore Copper Copper 3wt-pct

Comments on the workings information

  • SHALLOW TUNNELS AND SHAFTS, ABOUT 200 FT OF UNDERGROUND WORKINGS.

Reference information

Bibliographic references

  • Deposit

    KEITH, 1974, ABM BULL 189

  • Deposit

    ABM FILE DATA

  • Deposit

    NOWLAN, G.A., HAXEL, G.B., HANNA, W.F., PITKIN, J.A., DIVELEY-WHITE, D.V., MCDONNELL, J.R., JR., AND LUNDBY, WILLIAM, 1989, MINERAL RESOURCES OF THE BABOQUIVARI PEAK AND COYOTE MOUNTAINS WILDERNESS STUDY AREAS, PIMA COUNTY, ARIZONA: U.S. GEOLOGICAL SURVEY BULLETIN 1702, 30 P.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit FRACTURE FILLING IN FAULT ZONE CUTTING METASEDIMENTARY ROCKS.
Deposit THIS RECORD WAS TAKEN FROM RECORD M030519 OF JAN WILT IN MOLYBDENU M FILE, CONTACT PERSON T.G. THEODORE, USGS ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1983 Peterson, Jocelyn A. U.S. Geological Survey
Updater 01-MAR-1993 Orris, Greta J. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Authoritative Arizona resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.