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Alma Mine

Producer in Yavapai county in Arizona, United States with commodities Gold, Silver, Lead, Copper
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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. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Ownership information
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10048266
MRDS ID M800387
Record type Site
Current site name Alma Mine
Alternate or previous names Carlo-Alma, Carlo Shaft
Related records 10113525

Geographic coordinates

Geographic coordinates: -112.41824, 34.47477 (WGS84)
Elevation 2073
Location accuracy 1000(meters)
Relative position 1.1 MILES NW OF SPRUCE MOUNTAIN LOOKOUT TOWER, Estimated From Location Given On Blm District Sheet #248

Site location context

Political divisions (FIPS codes)

Yavapai(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Groom Creek(quadrangle 1:24,000 scale)

Bradshaw Mountains(quadrangle 1:100,000 scale)

Prescott(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Agua Fria(hydrologic unit)

Lower Gila-Agua Fria(hydrologic accounting unit)

Lower Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Prescott National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Arizona Yavapai

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 013N 002W 25 CENTER OF N2 OF S2 Arizona

Comments on the location information

  • UTM TAKEN TO THE CARLO CALIM FOUND ON BLM DISTRICT SHEET #248, ALMA CLAIM IS LOCATED TO THE EAST

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Lead Secondary
Copper Tertiary

Materials information

Materials Type of material
Galena Ore
Gold Ore
Hematite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Minor

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Paleoproterozoic
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
    Rock unit name Green Gulch Volcanics
    Rock description Green Gulch Volcanics
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Meta-Basalt
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) -112.41824, 34.47477
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Foliation In Precambrian Rocks Trends N10e To N20e
Type of structure Local
Structure description Veins Parallel Foliation And Crosscut It By 10-20 Degrees, Trending N20e To N-S

Ore body information

  • General form TABULAR
    Strike N5W
    Dip 87
    Thickness 1.52M

Controls for ore emplacement

  • Faulting, Igneous Activity, Especilly Dike Emplacement

Comments on the geologic information

  • DEPOSIT IS QUARTZ VEIN WHICH CUTS PROTEROZOIC ROCKS

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1907
Year of last production 1947

Mining district

District name Groom Creek District

Ownership information

  • Type Operator
    Owner Alma Mining Co.
    First year 1939
  • Type Operator
    Owner Lemons, J. W.
    First year 1939
  • Type Owner
    Owner Bashford And Burmister , Alma Mining Co
    First year 1918
    Last year 1940
  • Type Operator
    Owner Lake, C. R.
    First year 1939

Workings at the site

  • Type of workings Underground
    Length 182.88M
    Overall depth 60.96M
    Overall length 91.44M

Comments on the workings information

  • CARLO SHAFT 126 FT, 50 FT LEVEL, 300 FT TUNNEL, 116 FT ELVEL, 300 FT TUNNEL. 1000 FT OF DEVELOPMENT WORK AS SHAFTS AND TUNNELS

Comments on development

  • 9 CLAIMS (1918), 10 CLAIMS 1944, TWO CLAIM NAMES ARE CARLO AND ALMA

Reference information

Bibliographic references

  • Deposit

    USBM-ABGMT FILE DATA

  • Deposit

    ABGMT CLIPPINGS FILE DATA

  • Deposit

    ARIZONA DEPARTMENT OF MINERAL RESOURCES FILE DATA

  • Deposit

    YAVAPAI MAGAZINE-1918, V. VI #7, P.3

  • Deposit

    BLM DISTRICT SHEET #248

  • Deposit

    USGS GEOLOGIC QUADRANGLE MAP GQ 997

General comments

Subject category Comment text
Deposit LARGE ORE SHOOT FOUND ON THE CARLO VEIN

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-81 Laraba, Peter (Dewitt, Ed) 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.