Dike Lode

The Dike Lode is a feldspar, mica, beryllium, and lithium mine located in Pennington county, South Dakota at an elevation of 4,600 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: Dike Lode
Secondary: Dyke Lode

Commodity

Primary: Feldspar
Primary: Mica
Primary: Beryllium
Primary: Lithium

Location

State: South Dakota
County: Pennington
District: Keystone District

Land Status

Land ownership: National Forest
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.
Administrative Organization: Black Hills

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Owner Name: John Fisher Of Custer, Sd
Years: 1944 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Black Hills

Mineral Deposit Model

Not available

Orebody

Form: PEAR-SHAPED

Structure

Not available

Alterations

Not available

Rocks

Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic

Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic

Analytical Data

Analytical Data: AMBLYGONITE SAMPLE=9.18% LI2O. SPODUMENE SAMPLE=6% LI2O

Materials

Ore: Feldspar
Ore: Beryl
Ore: Muscovite
Ore: Amblygonite
Ore: Spodumene
Gangue: Quartz

Comments

Comment (Workings): AN INCLINED SHAFT CONNECTED TO A GLORY HOLE IN THE BOTTOM OF THE PIT

Comment (Production): PRODUCTION TO JUNE, 1945

Comment (Development): RESERVES OF SPODUMENE AND AMBLYGONITE APPEAR MODERATELY LARGE

Comment (Deposit): 3 ZONES, ONE UNPATENTED LODE CLAIM

References

Reference (Deposit): USGS PP 247, P. 101-102

Reference (Deposit): USBM INFO CIRC 7707, P. 69-70

Reference (Production): USGS PP 247, P. 101

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