Hugo Mine

The Hugo Mine 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: Hugo Mine
Secondary: Sarah Group

Commodity

Primary: Feldspar
Primary: Mica
Primary: Beryllium
Primary: Lithium
Secondary: Niobium (Columbium)
Secondary: Tantalum

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 National Forest

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Hugh Reinbold

Owner Name: Hough And Judson

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1923
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: OVAL

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

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

Analytical Data

Not available

Materials

Ore: Beryl
Ore: Muscovite
Ore: Spodumene
Ore: Amblygonite
Gangue: Apatite
Gangue: Lepidolite
Gangue: Cassiterite
Gangue: Quartz
Gangue: Fluorite
Gangue: Montmorillonite
Gangue: Halloysite
Gangue: Cleavelandite
Unknown: Albite

Comments

Comment (Location): NE 1/4, NE 1/4 OF SEC. 17 INTO SE 1/4, SE 1/4 OF SEC. 8

Comment (Deposit): 4 ZONES: WALL ZONE - SHEET MUSCOVITE AND BERYL; INTERMEDIATE ZONE - POTASH FELDSPAR AND SCRAP MICA; INNER ZONE - AMBLYGONITE, FELDSPAR, MICA; CORE - SPODUMENE WITH QUARTZ

Comment (Workings): OPEN CUTS ON SEVERAL LEVELS AND TWO HAULAGE TUNNELS WHICH CONNECT TO THE OPEN CUTS BY MEANS OF RAISES.

Comment (Development): LOCATED ON THE SPODUMENE PATENTED LODE CLAIM

References

Reference (Deposit): U. S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707

Reference (Deposit): ROBERTS, W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18

Reference (Deposit): U.S. GEOLOGICAL SURVEY, U.S. BUREAU OF RECLAMATION, AND SOUTH DAKOTA GEOLOGICAL SURVEY, 1975, MINERAL AND WATER RESOURCES OF SOUTH DAKOTA, SOUTH GEOLOGICAL SURVEY BULLETIN 16

Reference (Deposit): BIENIEWSKI, C.L., AND AGNEW, A.F., 1964, THE MINERAL INDUSTRY OF SOUTH DAKOTA IN 1962, SOUTH DAKOTA GEOLOGICAL SURVEY MINERALS REPORT 10 / BIENIEWSKI, C. L., AND MCGREGOR, DUNCAN J., 1965, THE MINERAL INDUSTRY OF SOUTH IN 1963, SOUTH DAKOTA GEOLOGICAL SURVEY MINERALS REPORT 11

Reference (Production): U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707 / BIENIEWSKI,C.L., AND AGNEW, A.F., 1964, THE MINERAL INDUSTRY OF SOUTH DAKOTA IN 1962. SOUTH DAKOTA GEOLOGICAL SURVEY MINERALS REPORT 10/ BIENIEWSKI, C.L., AND MCGREGOR, D.J., 1965, THE MINERAL INDUSTRY OF SOUTH DAKOTA IN 1963, SOUTH DAKOTA GEOLOGICAL SURVEY MINERALS REPORT 11

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