Forty-One and Riverside Claims

The Forty-One and Riverside Claims is a manganese mine located in Sierra county, New Mexico at an elevation of 4,800 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: Forty-One and Riverside Claims

Commodity

Primary: Manganese
Tertiary: Fluorine-Fluorite

Location

State: New Mexico
County: Sierra
District: Sierra Caballos District

Land Status

Land ownership: BLM Administrative Area
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

Type: Surface/Underground

Ownership

Owner Name: Blanchard Hanson
Home Office: Truth Or Consequences, N.M.
Years: 1960 -

Owner Name: Caballo Manganese Corp.
Years: 1956 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1952
Year Last Production: 1954
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Mexican Highland

Mineral Deposit Model

Not available

Orebody

Form: TABULAR

Form: TABULAR

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Silicified Limestone

Rocks

Name: Granite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Ordovician

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

Name: Granite
Role: Associated
Age Type: Host Rock
Age Young: Late Ordovician

Analytical Data

Not available

Materials

Ore: Pyrolusite
Ore: Psilomelane
Ore: Fluorite
Ore: Wad
Gangue: Calcite
Gangue: Quartz

Comments

Comment (Deposit): DEPOSITS OCCUR ON THE FORTY-ONE CLAIMS AS NORTH-STRIKING FLUORSPAR VEINS CROSSED BY EAST-STRIKING MANGANESE VEINS IN COUNTRY ROCK OF GRANITIC COMPOSITION. DEPOSITS ON THE RIVERSIDE CLAIMS OCCUR AS SEAMS, VEINLETS AND SMALL PODS IN TWO OR MORE NORTH-STRIKING SILICEOUS FRACTURE ZONES IN LIMESTONE COUNTRY ROCK. THE RIVERSIDE ZONES RANGE FROM 5 FT. TO 12 FT. WIDE AND ARE COVERED BY 5 UNPATENTED CLAIMS.

Comment (Workings): WORKINGS REPORTED IN THE 1960'S CONSISTED OF A 130 FT. CROSSCUT ADIT AND THREE OPENCUTS. THE OPENCUTS RANGE FROM 40 FT. TO 60 FT. LONG AND REACH A MAXIMUM DEPTH OF 20 FT. WORKINGS ON THE FORTY-ONE CLAIMS ARE OPENCUTS.

Comment (Geology): RIVERSIDE CLAIMS ARE LOCATED IN LIMESTONE AND THE FORTY-ONE CLAIMS ARE IN PRECAMBRIAN GRANITE. FOR REGIONAL GEOLOGY SEE SIERRA CABALLOS DISTRICT.

Comment (Deposit): THIS RECORD CONTAINS DATA FROM RECORD D010095 BY RONALD G. WORL WHICH HAS BEEN DELETED FROM MRDS. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Location): ACCURATE LOCATION IS FOR THE FORTY-ONE CLAIMS WHICH ARE LOCATED ABOUT 1000 FT. EAST OF THE RIVERSIDE CLAIMS. ; INFO FROM LAND.ST :(1975)

Comment (Production): PRODUCTION FROM 1952 TO 1954 IS REPORTED TO AMOUNT TO 315 LONG TONS OF SORTED ORE AVERAGING 22% MN.

References

Reference (Deposit): ROTHROCK, H.E., JOHNSON, C.H., AND HAHN, A.D., 1946 NMBMMR BULL 21, P. 158

Reference (Deposit): KELLEY, V.C., AND SILVER, C., 1952 U.N.M. PUB. 4, P. 199, FIG. 2

Reference (Deposit): FARNHAM, L.L., 1961 USBM IC-8030, P. 121-122

Reference (Deposit): WILLIAMS, F.E., 1966 USBM IC-8307, P. 119

Reference (Production): FARNHAM, L.L., 1961 P. 121

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