Southern Cross Mine

Past Producer in Deer Lodge county in Montana, United States with commodities Gold, Silver, Copper, Bismuth, Arsenic
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. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Production statistics
  19. Reserves and resources
  20. Workings at the site
  21. Links to other databases
  22. Bibliographic references
  23. General comments
  24. Reporter information

Geologic information

Identification information

Deposit ID 10069779
MRDS ID W007461
Record type Site
Current site name Southern Cross Mine
Alternate or previous names George Town, Red Nell, Cable

Geographic coordinates

Point of reference Geographic coordinates: Elevation UTM Precision Relative position Point location
-113.24258, 46.211 (WGS84) 2118 1.25MI NE OF GEORGETOWN.
(click for info)
Town -113.23306, 46.20917 (WGS84) 25 Mi W Of Anaconda

Site location context

Political divisions (FIPS codes)

Deer Lodge(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Silver Lake(quadrangle 1:24,000 scale)

Philipsburg(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Flint-Rock(hydrologic unit)

Pend Oreille(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(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 Deer Lodge

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 005N 013W 04 SE OF SW Montana

Comments on the location information

  • INFO FROM LAND.ST :(1971)

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Secondary
Bismuth Critical Tertiary
Arsenic Critical Tertiary

Materials information

Materials Type of material
Argentite Ore
Chalcopyrite Ore
Chrysocolla Ore
Malachite Ore
Tennantite Ore
Gold Ore
Azurite Ore
Calcite Gangue
Hematite Gangue
Limonite Gangue
Magnetite Gangue
Pyrrhotite Gangue
Quartz Gangue

Alteration

  • (Local) Ferruginous And Oxidized

Analytical data

Result ANALSIS OF ORE: 3.1/OZ AU, 3.4OZ AG, 53.9% FE
Result SILICEOUS- 1.47OZ AU, 1.5OZ AG, 24.9% FE
Result 2ND CLASS- 0.48OZ AU, 0.4OZ AG, 38.5% FE
Result HEAVEY FE ORE- 0.59OZ AU, 0.2OZ AG, 57% FC.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock type qualifier dolomitic LIMESTONE
    Rock unit name Hasmark Formation
    Rock description Hasmark Formationt
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Late Cambrian

Nearby scientific data

(1) -113.24258, 46.211
Town (2) -113.23306, 46.20917

Economic information

Geologic structures

Type of structure Regional
Structure description Philipsburg Batholith
Type of structure Local
Structure description Cable Stock

Ore body information

  • General form IRREGULAR AND COMPLEX
    Strike N01-10E
    Dip 50W
    Width 9.14M
    Depth to top 0M
  • General form Tabular
    Dip 60 degrees East
    Thickness 9.14M
    Length 91.44M
    Width 91.44M
    Area 1052.22HA

Comments on the geologic information

  • STRATA IN THE HASMARK, RED LION, & MAYWOOD FMS. ALL STRIKE NORTHWARD AND DIP 40 TO 50 DEG N.COUNTRY ROCK IS GREATLY DISTURBED AND IS TRANSVERSED BY A LARGE NUMBER OF FAULTS

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant Yes
Discovery year 1866
Year of first production 1872
Year of last production 1942

Mining district

District name Georgetown (Southern Cross, Cable) District

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Sentinel Mines, Inc., Sheridan, Mt.
  • Type Owner
    Owner Anaconda Copper Mining Co.

Production statistics

  • Year 1968
    Period 1872-1968
    Material ore
    Ore mined 404000mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major AU Gold Gold 6531731.01g
    Major AG Silver Silver 7464835.44g
    Minor CU Copper Copper 362873.89mt

Reserves and resources

  • Type In-situ
    Estimate year 1993
    Total resources 2794000mt ore
    Remarks USGS OFR 2004-1038.
    Commodity Subtype Grade units Group Importance Year
    Gold 8.98 g/mt Gold Primary 1993

Workings at the site

  • Type of workings Underground
    Length 5000M
    Overall depth 200M

Comments on the workings information

  • INCLINED SHAFT WITH 5 LEVELS, ON 150 FT LEVEL A 300 FT CROSSCUT TUNNEL CONNECTS WITH THE WORKINGS ON THE EAST VEIN, WHICH HAD A SHAFT AND 3 LEVELS.

Comments on development

  • CLAIM FIRST LOCATED 1866 BUT ALLOWED TO LAPSE, LATER RELOCATED BY SALTON CAMERON IN THE 1870'S

Reference information

Bibliographic references

  • Deposit

    MBMG BULL 84, P. 34, 35, 37.

  • Deposit

    USGS PP 74, P. 231-34.

  • Deposit

    MBMG MEM 31, P. 21.

  • Deposit

    USGS-USBM MINERAL YEARBOOKS 1905-1942.

  • Deposit

    1906 GEOLMAP EMMONS AND CALKINS

  • Deposit

    GEOLMAP MBMG EARLL

  • Production

    MBMG BULL 84

General comments

Subject category Comment text
Deposit FISSURE VEINS OF IRREGULAR WIDTH WHICH LIE APPROX. IN THE BEDDING PLANE OF THE COUNTRY ROCK OR CUTS STEEPLY ACROSS IT. W VEIN (MOST PRODUCTIVE) DESCRIBED ABOVE HAS A VERTICAL DEPTH OF 200 FT. ORE WAS RICHER A FEW FT BELOW THE SURFACE THAN AT THE OUTCROP. THE E VEIN CUTS THE COUNTRY ROCK AT A LARGE ANGLE ALONG BOTH STRIKE AND DIP. IT IS NOT SO WIDE, OF A LOWER GRADE, AND MORE PERSISTENT THAN THE W VEIN. ITS STRIKE IS 50 W, DIPS 60 NE AND HAS BEEN FOLLOWED FOR GT 400 FT ALONG ITS STRIKE. A THIRD VEIN IS LOCATED BETWEEN THE OTHER TWO AAND DIPS 50 E.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1975 Mlynarczyk, Meg S. U.S. Geological Survey
Updater 01-NOV-1980 Wise, Kristine K. (Elliott, James E.) U.S. Geological Survey

Beyond USGS

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