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Caribou Hill iron deposit

Occurrence in Boulder county in Colorado, United States with commodities Titanium, Iron, Vanadium
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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. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10094232
MRDS ID D000225
Record type Deposit
Current site name Caribou Hill iron deposit
Alternate or previous names Caribou Hill Deposits

Geographic coordinates

Point of reference Geographic coordinates: Elevation UTM Precision Relative position Point location
-105.58333, 39.98111 (WGS84)
(click for info)
-105.58083, 39.98278 (WGS84) 100

Site location context

Political divisions (FIPS codes)

Boulder(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nederland(quadrangle 1:24,000 scale)

Denver West(quadrangle 1:100,000 scale)

Denver(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 01S 073W 05, 08 Colorado

Comments on the location information

  • Location is centered on main mass of ultramafic rock (Iron dike) about 1000 ft NW of Caribou.

Commodities

Commodity Importance
Titanium Critical Primary
Iron Primary
Vanadium Critical Tertiary

Comments on the commodity information

  • (1) LEMMON, D. M., (2) TUCKER AND SAMPSON

Materials information

Materials Type of material
Ilmenite Ore
Magnetite Ore
Titaniferous Magnetitite Ore
Diopside Gangue

Mineral occurrence model information

Model code 5
USGS model code 3
Deposit model name Bushveld Fe-Ti-V

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Monzogabbro
    Rock type qualifier (Deleted record DC03398 = 10017388) called this quartz monzonite and cites the same sources).
    Rock unit name Caribou stock
    Stratigraphic age (youngest) Tertiary

Nearby scientific data

(1) -105.58333, 39.98111
ListMap
(2) -105.58083, 39.98278
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: TITANIFEROUS (ILMENITE) MAGNETITE IN MASSES OF PYROXENITE THAT ARE MAFIC SEGREGATIONS IN THE CARIBOU MONZONITE STOCK.
  • AGGREGATE AREA OF 16 ACRES. 36-59 PERCENT IRON, 2.5-3.6 PERCENT TITANIUM

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Mining district

District name Grand Island-Caribou District
District name Caribou

Comments on the production information

  • SMALL TRIAL SHIPMENTS

Comments on the reserve resource information

  • THE MASSES APPEAR SMALL AND WITH THEIR TITANIUM CONTENT ARE NOT ACCEPTABLE AS IRON ORE
  • A TACTITE BED 100 FT. BY 60 FT. WITH A THICKNESS OF 13 FT. IS ESTIMATED TO CONTAIN 7000 TONS. ORE BODIES TOO SMALL TO BE MINED ECONOMICALLY.

Comments on the workings information

  • TOP AND BOTTOM LAYERS ARE POORLY EXPOSED, BUT 2 INTERMEDIATE LAYERS ARE WELL EXPOSED IN DEEP TRENCHES AND IN A 25 FT. SHAFT. AREA TRENCHED IS 80 FT. BY 140 FT.

Reference information

Bibliographic references

  • Deposit

    HARRER, C. M., AND TESCH, W. J., JR., 1959, USBM INF. CIRC. 7918

  • Deposit

    SEE CRIB RECORD DC03389

  • Reserve-Resource

    HARRER, 1959

  • Deposit

    USBM MIN EXAM. FILE

  • Deposit

    HENDERSON, C. W., 1929, GEOLOGY OF THE NORTHEN MAGNETIC DEPOSIT, CARIBOU, BOULDER COUNTY, COLORADO: U.S. BUREAU OF MINES TECHNICAL PAPER 439, P. 4-7.

  • Deposit

    MOORE AND OTHERS, 1957, USGS BULL. 1030-N, p. 548 and FIG. 177.

  • Deposit

    CONSV. DIV. COMP. DATE, 10,62

General comments

Subject category Comment text
Deposit FOUR FLAT LYING LAYERS, SEPERATED BY GRANITE SILLS
Deposit CLAIMS INCLUDE COTTONWOOD NO. 1, NO. 2 AND NO. 3

Reporter information

Type Date Name Affiliation Comment
Reporter 1973-09-01 Fischer, Richard P. U.S. Geological Survey
Updater 2005-12-21 Beach, Richard A. Colorado Geological Survey
Editor 2007-05-29 Melton, Greg U.S. Geological Survey
Editor 2012-01-06 Wilson, Anna B U.S. Geological Survey merged duplicate record 10017388.
Reporter 1974-03-01 Conservation Division Files U.S. Geological Survey DC03398 = 10017388.

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.