The Caribou Hill iron deposit is a iron and titanium mine located in Boulder county, Colorado.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
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Caribou Hill iron deposit MRDS details
Site Name
Primary: Caribou Hill iron deposit
Secondary: Iron Dike
Secondary: Cottonwood No. 1, No. 2 and No. 3 Claims
Secondary: Caribou Hill Deposits
Commodity
Primary: Iron
Primary: Titanium
Tertiary: Vanadium
Location
State: Colorado
County: Boulder
District: Caribou
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Deposit
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Model Name: Bushveld Fe-Ti-V
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Monzogabbro
Role: Host
Description: (Deleted record DC03398 = 10017388) called this quartz monzonite and cites the same sources).
Age Type: Host Rock
Age Young: Tertiary
Analytical Data
Not available
Materials
Ore: Titaniferous Magnetitite
Ore: Magnetite
Ore: Ilmenite
Gangue: Diopside
Comments
Comment (Commodity): (1) LEMMON, D. M., (2) TUCKER AND SAMPSON
Comment (Deposit): FOUR FLAT LYING LAYERS, SEPERATED BY GRANITE SILLS
Comment (Deposit): CLAIMS INCLUDE COTTONWOOD NO. 1, NO. 2 AND NO. 3
Comment (Geology): GEOL.DESC: TITANIFEROUS (ILMENITE) MAGNETITE IN MASSES OF PYROXENITE THAT ARE MAFIC SEGREGATIONS IN THE CARIBOU MONZONITE STOCK.
Comment (Geology): AGGREGATE AREA OF 16 ACRES. 36-59 PERCENT IRON, 2.5-3.6 PERCENT TITANIUM
Comment (Location): Location is centered on main mass of ultramafic rock (Iron dike) about 1000 ft NW of Caribou.
Comment (Production): SMALL TRIAL SHIPMENTS
Comment (Reserve-Resource): THE MASSES APPEAR SMALL AND WITH THEIR TITANIUM CONTENT ARE NOT ACCEPTABLE AS IRON ORE
Comment (Reserve-Resource): 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.
Comment (Workings): 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.
References
Reference (Reserve-Resource): HARRER, 1959
Reference (Deposit): CONSV. DIV. COMP. DATE, 10,62
Reference (Deposit): USBM MIN EXAM. FILE
Reference (Deposit): SEE CRIB RECORD DC03389
Reference (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.
Pages: p. 4-7.
Reference (Deposit): MOORE AND OTHERS, 1957, USGS BULL. 1030-N, p. 548 and FIG. 177.
Pages: p. 548
Reference (Deposit): HARRER, C. M., AND TESCH, W. J., JR., 1959, USBM INF. CIRC. 7918
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