Segerstrom-Heizer Mine

The Segerstrom-Heizer Mine is a iron mine located in Pershing county, Nevada at an elevation of 4,259 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: Segerstrom-Heizer Mine
Secondary: NBMG Sample Site 2586

Commodity

Primary: Iron

Location

State: Nevada
County: Pershing
District: Mineral Basin District

Land Status

Land ownership: Private
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

Ownership

Owner Name: Southern Pacific Co.-Santa Fe Minerals
Years: 1985 -

Owner Name: Segerstrom And Heizer

Production

Year: 1961
Time Period: 1957-1961
Material type: FE
Description: Cp_Grade: ^60%
Year: 1966
Time Period: To 1966
Material type: ORE FE
Description: Cp_Grade: ^60%
Year: 1966
Time Period: 1962-1966
Material type: FE
Description: Cp_Grade: ^60%

Deposit

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

Physiography

Not available

Mineral Deposit Model

Model Name: Skarn Fe

Orebody

Form: MASSIVE, VEIN, DISSEMINATED

Structure

Type: R
Description: Major Faults

Type: L
Description: Main Fault And Cross Faults

Alterations

Alteration Type: L
Alteration Text: Scapolitized; Chloritized

Rocks

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Late Jurassic

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Late Jurassic

Analytical Data

Analytical Data: NBMG SAMPLE 2586, DUMP SAMPLE OF GABBRO WITH CHLORITE, SCAPOLITE, MAGNETITE, PYRITE, APATITE.

Materials

Ore: Magnetite
Ore: Pyrite
Ore: Marcasite
Ore: Hematite
Gangue: Chlorite
Gangue: Calcite
Gangue: Apatite
Gangue: Actinolite

Comments

Comment (Deposit): DRILLING INDICATES THAT MASSIVE ORE OCCURS TO DEPTH OF 500 FT AND EXTENDS 1800 FT E-W AND 600 FT N-S OF PIT. ORE IS MAGNETITE WITH MINOR HEMATITE IN VEINS AND IRREGULAR MASSES; THE ORE BODIES FORMED AS REPLACEMENT BODIES IN GABBRO. ORE LOCALIZED BY MAJOR NE STRIKING, NW-DIPPING FAULT. MINOR NORTH TO NW-STRIKING FAULTS OFFSET MAIN FAULT AND FORMED BRECCIATED ZONES WHERE IRREGULAR MASSES OF MAGNETITE ARE LOCALIZED. DISSEMINATED MAGNETITE OCCURS IN BEDROCK GABBRO. IRON ORE RANGES FROM PURE MAGNETITE (72.4%) TO A MIXTURE OF MAGNETIZED AND CHLORITIZED HOST ROCK WITH 50-60% FE CONTENT.

Comment (Deposit): OWNED BY SOUTHERN PACIFIC CO. LEASED TO SEGERSTROM AND HEIZER; DODGE CONSTRUCTION 1945-61; NEVADA BARTH 1962-66, LARGE OPEN PIT. DRILLING INDICATES THAT MASSIVE ORE OCCURS TO DEPTH OF 500 FEET AND EXTENDS 1800 FEET E-W AND 600 FEET N-S OF OPEN PIT. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV

Comment (Location): EXCELLENT ACCESSIBILITY. NORTH-CENTER SEC. 15.; PREVIOUS QUAD DESIGNATION = BUFFALO MOUNTAIN (1954) 1:625000

Comment (Reserve-Resource): ORE EXTENDS TO 500 FEET IN DEPTH & EXTENDS 1800 EAST-WEST AND 600 FEET NORTH-SOUTH OF OPEN PIT

Comment (Production): TOTAL PRODUCTION TO 1966 WAS 1.2 MILLION TONS

Comment (Development): LEASED TO DODGE CONSTRUCTION 1945-61 AND TO NEVADA BARTH 1962-66.NO ACTIVITY IN 1985 AT TIME OF EXAMINATION

Comment (Workings): LARGE OPEN PIT

Comment (Geology): MAGNETITE WITH MINOR HEMATITE IN VEINS AND IRREGULAR MASSES, FORMED AS REPLACEMENT BODIES IN GABBRO. ORE LOCALIZED BY MAJOR NE STRIKING, NW-DIPPING FAULT. MINOR NORTH TO NW-STRIKING FAULTS OFFSET MAIN FAULT AND FORMED BRECCIATED ZONES WHERE IRREGULAR MASSES OF MAGNETITE ARE LOCALIZED. DISSEMINATED MAGNETITE OCCURS IN BEDROCK GABBRO. IRON ORE RANGES FROM PURE MAGNETITE (72.4%) TO A MIXTURE OF MAGNETIZED AND CHLORITIZED HOST ROCK WITH 50-60% FE CONTENT.

References

Reference (Deposit): CAMERON, E.N., 1939, GEOLOGY AND MINERALIZATION OF THE NORTHEASTERN HUMBOLDT RANGE, NEVADA; GSA BULL. VOL. 50, P 563-634.

Reference (Deposit): BONHAM, H. F., JR., 18 JUL 85, NBMG FIELD EXAMINATION REPORT AND SAMPLE ANALYSIS.

Reference (Deposit): NBMG STAFF, 1985, NBMG OFR 85-3.

Reference (Production): JOHNSON, 1977

Reference (Deposit): MOORE, 1971, CALIFORNIA-NEVADA IRON RESOURCES AND IRON ORE MARKETS: USBM 1C 8511

Reference (Deposit): REEVES AND KRAL, 1955, IRON ORE DEPOSITS OF NEVADA, PART A, GEOLOGY AND IRON ORE DEPOSITS OF THE BUENA VISTA HILLS, CHURCHILL AND PERSHING COUNTIES, NEVADA: NBMG BULL. 53

Reference (Deposit): JOHNSON, M.G., 1977, GEOLOGY AND MINERAL DEPOSITS OF PERSHING COUNTY, NEVADA: NBMG BULL. 89

Nevada Gold

Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.