The Jefferson County Iron Mines is a iron mine located in Jefferson county, Colorado at an elevation of 7,100 feet.
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
Elevation: 7,100 Feet (2,164 Meters)
Commodity: Iron
Lat, Long: 39.63583, -105.21222
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Jefferson County Iron Mines MRDS details
Site Name
Primary: Jefferson County Iron Mines
Commodity
Primary: Iron
Location
State: Colorado
County: Jefferson
District: Morrison Area
Land Status
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1880
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: Front Range Uplift
Type: L
Description: Bear Creek Shear Zone
Alterations
Not available
Rocks
Name: Schist
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Schist
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Analytical Data
Analytical Data: HIGHER GRADE SAMPLE CONTAINED 20.56% FE AND 0.069%
Materials
Ore: Magnetite
Comments
Comment (Workings): THREE SMALL PROSPECT PITS
Comment (Location): ALONG STRAIN GULCH, 2000 FT ABOVE MOUTH ACCORDING TO HARRER AND TESCH BUT EXACT LOCATION IS UNCERTAIN ; INFO FROM LAND.ST :(1975)
Comment (Development): HARRER AND TESCH CONSIDERED DEPOSIT TO BE NONCOMMERCIAL
Comment (Deposit): HARRER AND TESCH DESCRIBE DEPOSIT AS OCCURRING IN PEGMATITIC AMPHIBOLE SCHIST. GABLE'S MAP AND ROCK-UNIT DESCRIPTIONS SUGGEST THAT FE COULD OCCUR IN ONE OF SEVERAL UNITS AS ACCESSORY MINERAL: MICROCLINE-QUARTZ-PLAGIOCLASE-BIOTITE GNEISS, PEGMATITE, OR CORDIERITE-BEARING BIOTITE GNEISS.
References
Reference (Deposit): HARRER, C.M., AND TESCH, W.J., JR., 1959, RECONNAISSANCE OF IRON OCCURRENCES IN COLORADO: USBM IC 7918, P. 45.
Reference (Deposit): SCOTT, G.R., 1972, GEOLOGIC MAP OF THE MORRISON QUADRANGLE, JEFFERSON COUNTY, COLORADO: USGS MAP I-790-A
Reference (Deposit): GABLE, D.J., 1968, GEOLOGY OF THE CRYSTALLINE ROCKS IN THE WESTERN PART OF THE MORRISON QUADRANGLE, JEFFERSON COUNTY, COLORADO: USGS BULL. 1251-E.
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
