1. Mineral Resources
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  3. Mineral Resource Data System (MRDS)

Horseshoe, Comstock, Holland, and Roxbury Lodes

Occurrence 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. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Land status
  12. Ownership information
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10017535
MRDS ID DC03723
Record type Site
Current site name Horseshoe, Comstock, Holland, and Roxbury Lodes
Alternate or previous names Hershoc, Comstock, Holland & Roxburg Lodes, Horseshoe Comstock Holland Roxbury

Geographic coordinates

Point of reference Claim
Geographic coordinates: -105.3756, 40.00259 (WGS84)
Location accuracy 1000(meters)
Relative position May be the cluster of prospecs north of Boulder Creek, northeast of Sunnyside, NEAR SE COR. OF SEC. 31, SEVEN MI. W. OF BOULDER.

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 SE4 Colorado

Comments on the location information

  • LATITUDE-LONGITUDE VALUES CALCULATED FROM TOWNSHIP, RANGE, SECTION.

Commodities

Commodity Importance
Tungsten Critical Primary

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

Claim (1) -105.3756, 40.00259
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: FISSURE VEIN, N79E 75 SE, IN GRANITE SHOWING GOUGE AND OXIDIZED MATERIAL BUT NO MINERALIZATION.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Mining district

District name Boulder Tungsten

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner TONY GIRARDO
    Year 1983

Comments on the production information

  • WORKINGS-20 FT. SHAFT AND A 6FT DEEP CUT

Reference information

Bibliographic references

  • Deposit

    USBM MINERAL EXAM. FILE

  • Deposit

    CONSV. DIV. COMP. DATE, 1,62

General comments

Subject category Comment text
Deposit 3 PATENTED, 1 UNPATENTED, CLAIMS)

Reporter information

Type Date Name Affiliation Comment
Reporter 1973-03-01 Conservation Division Files U.S. Geological Survey
Editor 2013-12-19 Wilson, Anna B U.S. Geological Survey merged and deleted duplicate record. corrected name.
Reporter 1983-11-17 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines MAS 0080130948 = 10262841

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.