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Lower South Mine

Past Producer in Fremont county in Colorado, United States with commodities Mica, Feldspar, Beryllium
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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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10013523
MRDS ID D009873
MAS/MILS ID 80430309
Record type Site
Current site name Lower South Mine
Alternate or previous names Whisper ? Mine, Colorado Feldspar Company
Related records 10166801

Geographic coordinates

Point of reference Pit
Geographic coordinates: -105.48778, 38.6843 (WGS84)
Elevation 2530
Location accuracy 10(meters)
Relative position 4.7 MILES S 66 E OF GUFFEY. Prospect X shown but not labeled on topo. Agrees with fig. 7 in PP-227.

Site location context

Political divisions (FIPS codes)

Fremont(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cover Mountain(quadrangle 1:24,000 scale)

Pikes Peak(quadrangle 1:100,000 scale)

Pueblo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Arkansas Headwaters(hydrologic unit)

Upper Arkansas(hydrologic accounting unit)

Upper Arkansas(hydrologic subregion)

Arkansas-White-Red(hydrologic region)

Geographic areas

Country State County
United States Colorado Fremont

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 016S 072W 6 NE OF SW Colorado

Comments on the location information

  • NEAR BASE OF EASTERN WALL OF MAC GULCH, ABOUT 250 FT EAST OF COLORADO STATE HIGHWAY 9. ; INFO FROM LAND.ST :(1976)

Commodities

Commodity Importance
Mica Primary
Feldspar Primary
Beryllium Critical Tertiary

Materials information

Materials Type of material
Microcline Ore
Muscovite Ore
Biotite Gangue
Beryl Trace

Mineral occurrence model information

Model code 32
USGS model code 13
Deposit model name Pegmatites

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

Pit (1) -105.48778, 38.6843
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Currant Creek Fault Zone
Type of structure Regional
Structure description Southern Front Range, Thirtynine Mile Volcanic Field

Ore body information

  • General form BLUNTLY TERMINATED ON SOUTH, TAPERING TO NORTH
    Strike N 10 E
    Dip EAST 20 NW; WEST 60 NE
    Plunge 22 DEG
    Plunge direction N 49 W
    Thickness 15.24M
    Length 60.96M
    Width 30.48M
    Depth to top 0M
    Depth to bottom 15.24M
  • General form BLUNTLY TERMINATED ON SOUTH, TAPERING TO NORTH
    Strike N 10 E
    Dip EAST 20 NW; WEST 60 NE

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Discovery year 1950
Year of first production 1950

Mining district

District name Micanite District

Land status

Ownership category BLM Administrative Area

Comments on the production information

  • SCRAP MICA NEARLY MINED OUT

Comments on the reserve resource information

  • TOTAL RESERVES OF SCRAP MICA AND MICROCLINE ESTIMATED AT ONLY A FEW TENS OF TONS (1950)

Workings at the site

  • Type of workings Unknown
    Area 0.145HA
    Length 45.72M
    Overall depth 9.14M
    Overall length 45.72M
    Overall width 33.53M

Comments on the workings information

  • OPEN CUT 46X39X30 FT DEEP; FLOOR OF OPEN CUT ON TWO LEVELS, ONE 11 FT LOWER THAN OTHER; 19-FT VERTICAL SHAFT FROM BOTTOM OF LOWER LEVEL; 2 DRIFTS OFF SHAFT, ONE 15 FT LONG, OTHER 50 FT LONG; 20X11 FT ROOM IN SOUTH WALL, 9 FT LOWER THAN 11-FT LEVEL; ALSO 9 SHALLOW PROSPECT PITS AND TRENCHES

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit FINE-GRAINED BORDER ZONE SAME COMPOSITION AS WALL ZONE IS QUARTZ-MICROCLINE-MUSCOVITE, PLAGIOCLASE-BIOTITE PEGMATITE; CORE IS QUARTZ-MICROCLINE PEGMATITE
Deposit 100 FT EAST OF MINE IS NEARLY CIRCULAR, UNZONED PEGMATITE ABOUT 30-FT IN DIAMETER

Reporter information

Type Date Name Affiliation Comment
Reporter 1982-12-01 Collins, Donna B. Colorado Geological Survey
Editor 2012-10-03 Wilson, Anna B U.S. Geological Survey merged and deleted duplicate record. confirmed location.
Reporter 1991-12-30 Martin U.S. Bureau of Mines MAS 0080430309

Beyond USGS

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

External references

Maps centered on this site

Authoritative Colorado resources

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