The Reef Titanium/Iron Occurrence

The The Reef Titanium/Iron Occurrence is a mine located in Lewis and Clark county, Montana at an elevation of 5,000 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

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.

Site Name

Primary: The Reef Titanium/Iron Occurrence

Commodity

Tertiary: Iron
Tertiary: Titanium, Metal

Location

State: Montana
County: Lewis and Clark

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 Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: M

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: The Reef

Mineral Deposit Model

Not available

Orebody

Form: TABULAR

Structure

Not available

Alterations

Not available

Rocks

Name: Sandstone
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cretaceous

Name: Sandstone
Role: Host
Age Type: Host Rock
Age Young: Late Cretaceous

Analytical Data

Analytical Data: MAGNETITE AND ILMENITE MAKE UP 95% OF DEPOSIT, OTHER MINERAL GRAINS 1%, CEMENT 4%

Materials

Ore: Ilmenite
Ore: Magnetite
Gangue: Feldspar
Gangue: Chert
Gangue: Sphene
Gangue: Quartz
Gangue: Zircon

Comments

Comment (Location): ON E. FLANK OF THE RIDGE KNOWN AS THE REEF

Comment (Geology): OCCURRENCE IS IN TOP OF VIRGELLE SANDSTONE

Comment (Deposit): BEDS ARE A DARK REDDISH-BROWN COLOR AND ARE FIRMLY CEMENTED

References

Reference (Analytical Data): SRC.REF: SCHMIDT, ROGER G., 1979, USGS BULL. 1441, P. 68

Reference (Deposit): SCHMIDT, ROGER G., 1979, ROCKS AND MINERAL RESOURCES OF THE WOLF CREEK AREA, LEWIS AND CLARK AND CASCADE COUNTIES, MONTANA: USGS BULL. 1441, P. 6

Reference (Deposit): 1966 RECON R.G. SCHMIDT: BULL. 144

Principal Gold Districts of Montana

In Montana, 54 mining districts have each have produced more than 10,000 ounces of gold. The largest producers are Butte, Helena, Marysville, and Virginia City, each having produced more than one million ounces. Twenty seven other districts are each credited with between 100,000 and one million ounces of gold production. Read more: Principal Gold Districts of Montana.