Little Bonanza Mine

The Little Bonanza Mine is a gold and silver mine located in Lawrence county, South Dakota at an elevation of 5,919 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: Little Bonanza Mine

Commodity

Primary: Gold
Primary: Silver

Location

State: South Dakota
County: Lawrence
District: Ruby Basin District

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Golden Reward Gold Mining Co.

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
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

Not available

Structure

Type: L
Description: Folding And Minor Faulting. To The East Is A North - South Trending Dike

Alterations

Alteration Type: L
Alteration Text: Ore Was Of The Blue Variety, Unoxidized

Rocks

Name: Phonolite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene

Name: Phonolite
Role: Associated
Age Type: Host Rock
Age Young: Late Cambrian

Name: Phonolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cambrian

Name: Phonolite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Analytical Data

Not available

Materials

Ore: Gold
Ore: Silver

Comments

Comment (Location): SW 1/4 , ON DIVIDE BETWEEN STEWART AND FANTAIL GULCHES

Comment (Deposit): SEVERAL ORE SHOOTS

Comment (Geology): THE FOLDING AND FAULTING SPLIT THE ORE INTO SEVERAL BODIES.

References

Reference (Deposit): US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART I, BUREAU OF MINES INFORMATION CIRCULAR 7688 .

Reference (Deposit): SHAPIRO, L. H., AND GRIES, J. P., 1970 , ORE DEPOSITS IN ROCKS OF PALEOZOIC AND TERTIARY AGE OF THE NORTHERN BLACK HILLS, SOUTH DAKOTA, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY.

Reference (Deposit): SHAPIRO, L. H., AND GRIES, J. P., 1970 , ORE DEPOSITS IN ROCKS OF PALEOZOIC AND TERTIARY AGE OF THE NORTHERN BLACK HILLS, SOUTH DAKOTA, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOG

Reference (Production): US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART I, BUREAU OF MINES INFORMATION CIRCULAR 7688

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