The Hillside-Sierra Group is a manganese mine located in Sierra county, New Mexico at an elevation of 5,210 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
Elevation: 5,210 Feet (1,588 Meters)
Commodity: Manganese
Lat, Long: 32.9025, -107.22417
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Hillside-Sierra Group MRDS details
Site Name
Primary: Hillside-Sierra Group
Secondary: Claims: Sierra Nos. 1 To 8
Secondary: Hillside Nos. 1 To 4
Commodity
Primary: Manganese
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: Sierra Mining Co.
Home Office: Albuquerque, N.M.
Years: 1958 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1943
Year Last Production: 1952
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: PODS
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Silicified Limestone
Rocks
Name: Limestone
Role: Host
Age Type: Host Rock
Age Young: Late Ordovician
Analytical Data
Not available
Materials
Ore: Wad
Ore: Psilomelane
Ore: Pyrolusite
Gangue: Calcite
Comments
Comment (Location): LOCATED ON THE SOUTHWEST FLANK OF THE CABALLO MOUNTAINS NEAR THE BASE OF THE ESCARPMENT.
Comment (Production): 86.5 LONG TONS OF SORTED ORE AVERAGING 18.9 % MN WAS PRODUCED DURING 1952-1953; 12 TONS OF 31.3 % MN AND 18 TONS OF UNKNOWN GRADE WERE REPORTEDLY PRODUCED IN 1943.
Comment (Deposit): DEPOSITS OCCUR AS SMALL PODS, IRREGULAR MASSES, STRINGERS AND DISSEMINATED PARTICLES ASSOCIATED WITH STEEPLY DIPPING, NORTHWEST STRIKING FRACTURE ZONES. DEPOSITS RANGE IN LENGTH FROM 30 FT. TO 100 FT., ARE 6 FT. TO 30 FT. WIDE, AND ARE UP TO 20 FT. THICK. 12 UNPATENTED CLAIMS.
Comment (Workings): WORKINGS REPORTED IN 1961 CONSISTED OF SEVERAL OPEN CUTS AND A 100 FT. ADIT.
Comment (Geology): FOR REGIONAL GEOLOGY SEE SIERRA CABALLOS DISTRICT.
References
Reference (Production): FARNHAM, L.L., 1961 P. 125; AND NMBMMR GENERAL FILE DATA
Reference (Deposit): FARNHAM, L.L., 1961 USBM IC-8030, P. 125-126
Reference (Deposit): NMBMMR GENERAL FILE DATA
Reference (Deposit): KELLEY, V.C., AND SILVER, C., 1952 U.N.M. PUB. 4, P. 199, FIG.2
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