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Pennsylvania Lode

Past Producer in Boulder county in Colorado, United States with commodity Tungsten
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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. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Ownership information
  13. Production statistics
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10091323
MRDS ID DC03722
Record type Site
Current site name Pennsylvania Lode

Geographic coordinates

Geographic coordinates: -105.38917, 40.00917 (WGS84)
Relative position NW 1/4

Site location context

Political divisions (FIPS codes)

Boulder(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Gold Hill(quadrangle 1:24,000 scale)

Estes Park(quadrangle 1:100,000 scale)

Greeley(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

St. Vrain(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Arapaho and Roosevelt National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Boulder

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 01N 71W 31 NW4 Colorado

Comments on the location information

  • LATITUDE-LONGITUDE VALUES CALCULATED FROM TOWNSHIP, RANGE, SECTION.
  • Appears to be on the west side of Black Tiger Gulch, north of Sunnyside(settlement).

Commodities

Commodity Importance
Tungsten Critical Primary

Materials information

Materials Type of material
Ferberite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -105.38917, 40.00917
ListMap

Economic information

Comments on the geologic information

  • VEIN OF PEGMATITE MATERIAL, CONTAINS FERBERITE
  • Ferberite as filling in minor fractures; as cement in breccia. (ColoMetalMiningFund, 1960)

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No

Mining district

District name Boulder Co, Tungsten Dist.

Ownership information

  • Type Owner
    Owner Joseph Rafter
    Year 1960
  • Type Operator
    Owner Prime, Batasso, and Hetzer
    Year 1960

Production statistics

  • Year 1944
    Period 1942-1944
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Tungsten Tungsten 2350WO3

Workings at the site

  • Type of workings Underground
    Length 83.82M
    Overall depth 30.48M

Comments on other economic factors

  • Operating at time of 1956 price failure (ColoMetalMiningFund, 1960)

Reference information

Bibliographic references

  • Deposit

    STATE OF COLO. METAL MINING FUND BOARD, 1960, TUNGSTEN MINES OF COLO., 78 p.

  • Deposit

    CONSV. DIV. COMP. DATE, 1,62

General comments

Subject category Comment text
Deposit IN A HIGHLY PRODUCTIVE AREA OF BOULDER CO.

Reporter information

Type Date Name Affiliation Comment
Reporter 1973-03-01 Conservation Division Files U.S. Geological Survey
Editor 2007-05-18 Melton, Greg U.S. Geological Survey
Editor 2013-12-18 Wilson, Anna B U.S. Geological Survey Confirmed that both Pennsylvania mines are DIFFERENT. About 2 1/2 mi. apart.

Beyond USGS

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

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.