Cleve-Avon Group

Producer in Beaverhead county in Montana, United States with commodities Silver, Lead, Gold
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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  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 10110437
MRDS ID W007444
Record type Site
Current site name Cleve-Avon Group
Alternate or previous names Franklin Mine, Cleve - Avon Mine
Related records 10220792

Geographic coordinates

Geographic coordinates: -112.91617, 45.60406 (WGS84)
Elevation 2560
Relative position 12 MILES WEST OF MELROSE AT BASE OF CLEVE MOUNTAIN.

Site location context

Political divisions (FIPS codes)

Beaverhead(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Tahepia(quadrangle 1:24,000 scale)

Butte South(quadrangle 1:100,000 scale)

Dillon(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Big Hole(hydrologic unit)

Missouri Headwaters(hydrologic accounting unit)

Missouri Headwaters(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Beaverhead-Deerlodge 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 Montana Beaverhead

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 003S 011W 02 Montana

Commodities

Commodity Importance
Silver Primary
Lead Primary
Gold Secondary

Materials information

Materials Type of material
Galena Ore
Tetrahedrite Ore
Quartz Gangue

Analytical data

Result AVG. ORE ASSAYS BETWEEN 1896-1900: 45-167 OZ AG/TON, .5-10% CU, 8-34% PB, AND 7-16% ZN, PLUS SILICA, LIME AND IRON

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Late Cambrian
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite
    Rock unit name Hasmark
    Rock description Hasmark

Nearby scientific data

(1) -112.91617, 45.60406

Economic information

Geologic structures

Type of structure Local
Structure description Three Separate Sets Of Fractures, Tight Folds, Great Fault, Pioneer Batholith

Ore body information

  • General form CHIMNEY-LIKE DEPOSITS, BEDDING DEPOSITS
    Strike NE-SW
    Dip 90
    Plunge 35
    Plunge direction NE
    Depth to top 0M
    Depth to bottom 150M

Controls for ore emplacement

  • Intersection Of Source Fissures With Favored Stratigraphic Horizons (Blue Limestone Horizon)

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1873
Discoverer Noah Armstrong And Others
Year of first production 1877

Mining district

District name Hecla (Bryant) District

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Lively'S, Inc., Melrose, Mt.

Comments on the production information

  • CLEVE-AVON WAS WORKED CONTINUOUSLY FROM 1877 TO 1901 BY THE HECLA CO. PRODUCTION WAS SECOND ONLY TO THE LION MTN. GROUP. LESEES OPERATED THE MINE SPORATICALLY FROM 1901-1938.

Workings at the site

  • Type of workings Underground
    Length 1500M
    Overall depth 160M

Comments on the workings information

  • INITIAL DEVELOPMENT WAS BY ADITS 300 FT. ABOVE THE MOUNTAIN BASE. THESE WERE EXTENDED DOWNWARD BY INCLINES AND SHAFTS. LATER THE LOWER CLEVE TUNNEL WAS DRIVEN IN THE MOUNTAIN AT IT'S BASE. THREE LOWER LEVELS WERE OPENED AT 250, 350, AND 375 FT. BELOW THE TUNNEL LEVEL. THE BARBOUR WORKINGS REACHED A DEPTH OF NEARLY 500 FEET BEFORE MINING CEASED. MUCH OF WORKINGS ARE OPEN BUT FLOODED

Comments on development

  • SEVERAL PATENTED CLAIMS JOINED GROUP BETWEEN 1880 AND 1925. THE ONLY PRODUCING CLAIMS WERE THE CLEVE, AVON, AND FRANKLIN. ; ECON.COM: KNOWN DEPOSITS ESSENTIALLY EXHAUSTED, DEVELOPMENT HANDICAPPED BY OFFSET OF THE ORE LEADS, NEED FOR CONSTANT PUMPING IN LOWER LEVELS

Reference information

Bibliographic references

  • Deposit

    MBMG BULL 85.

  • Deposit

    LAWSON, D. C., 1974, DIRECTORY OF MINING ENTERPRISES FOR 1974, MT. BUREAU OF MINES & GEOLOGY BULL. 95

  • Deposit

    USGS BULL 574, P. 85.

  • Deposit

    MBMG MEM 25, P. 69-74.

  • Deposit

    1914 RECON WINCHELL, A.N., U.S.G.S. BULL. 574

  • Deposit

    1948 COMPILE M.B.M.G. MEM. 25

  • Deposit

    1972 COMPILE M.B.M.G. BULL. 85

General comments

Subject category Comment text
Deposit ORE DEPOSITS ARE IN LIMESTONE WHICH HAS BEEN FOLDED INTO AN ANTICLINAL STRUCTURE PLUNGING ABOUT 35NE, TERMINATED ON THE NORTHEAST BY THE GREAT FAULT. THE ORE BODIES SPREAD OUT FROM ORE-FILLED VERTICAL FISSURES, WHICH FORM TWO SETS, ONE OF WHICH STRIKES NE, (AVON-BARBOUR WORKINGS) AND THE OTHER NW (CLEVE INCLINE-HULL WORKINGS).

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1975 Mlynarczyk, Meg S. U.S. Geological Survey
Updater 01-JUL-1980 Loen, Jeffrey S. (Pearson, Robert C.) U.S. Geological Survey

Beyond USGS

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