1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Mammoth Group

Producer in Pima county in Arizona, United States with commodities Silver, Gold
Map
XML
JSON
KML
B
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. Mining district
  14. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10048096
MRDS ID M800083
Record type Site
Current site name Mammoth Group
Related records 10186062

Geographic coordinates

Geographic coordinates: -111.35986, 31.60902 (WGS84)
Elevation 1158
Relative position 2 1/2 MILES NNW OF ARIVACA TOWNSITE

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Arivaca(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

Bureau of Land Management(Bureau of Land Management AZ)

Bureau of Land Management AZ BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Arizona Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 021S 010E 7 S Arizona

Comments on the location information

  • PROSPECT IN LOWER SOUTH HALF SECTION 7, DEAD CENTER

Commodities

Commodity Importance
Silver Primary
Gold Primary

Comments on the commodity information

  • ARGENIFEROUS GALENA AND AURIFEROUS GALENA FOUND IN GENERAL AREA

Materials information

Materials Type of material
Quartz Gangue

Alteration

  • (Local) Near Surface Enrichment By Oxidation, Weathering

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Amado Granite
    Rock description Amado Granite
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -111.35986, 31.60902
ListMap

Economic information

Controls for ore emplacement

  • Fractures In Granite

Comments on the geologic information

  • MINE NOT MENTIONED IN ABGMT 189. AMADO AREA DESCRIPTIONS USED.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1940
Year of last production 1940

Mining district

District name Amado District

Ownership information

  • Type Operator
    Owner F. C. Keppler

Comments on development

  • ONE YEAR PRODUCTION, 6 TONS AT APROX 1.5 OZ AU/TON AND 24 OZ. AG/TON

Reference information

Bibliographic references

  • Deposit

    ABGMT 189, P 104

  • Deposit

    ABGMT - USBM FILE DATA

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1981 Gest, Don E. Arizona Bureau of Geology and Mineral Technology

Beyond USGS

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

Maps centered on this site

Authoritative Arizona resources

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