The Armstrong Mine is a iron mine located in Iron county, Utah at an elevation of 6,001 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: 6,001 Feet (1,829 Meters)
Commodity: Iron
Lat, Long: 37.71389, -113.23167
Map: View on Google Maps
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Armstrong Mine MRDS details
Site Name
Primary: Armstrong Mine
Commodity
Primary: Iron
Location
State: Utah
County: Iron
District: Iron Springs
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: Utah International, Inc.
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Operation Type: Unknown
Year First Production: 1948
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Form: TABULAR
Structure
Type: R
Description: Sevier Thrust System
Type: L
Description: Granite Mtn. Pluton
Alterations
Alteration Type: L
Alteration Text: Limonitization
Rocks
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Jurassic
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Jurassic
Analytical Data
Analytical Data: IRON 59.2%
Materials
Ore: Limonite
Ore: Hematite
Ore: Magnetite
Gangue: Quartz
Gangue: Calcite
Gangue: Apatite
Comments
Comment (Commodity): ARMSTRONG ORE IS SOMEWHAT HARDER, MORE MASSIVE, HIGHER IN MAGNETITE, SILICA AND PHOSPHOROUS THAN ADJACENT DEPOSITS ON EAST GRANITE MTN.
Comment (Location): SECTION SUBDIVISIONS SE 1/4 SW 1/4 NW 1/4
Comment (Workings): BENCH MINE, DISTURBED AREA EXTENT 160 ACRES
Comment (Deposit): ANGULAR BLOCKS OF QUARTZ MONZONITE ARE ASSOCIATED WITH FAULT BRECCIA. THE FAULT BRECCIA IS IMPREGNATED WITH MAGNETITE AND DOUBTLESS SERVED AS A CONDUIT OR FEEDER FOR THE ARMSTRONG ORE BODY. THE LITTLE ALLIE, ARMSTRONG AND LINDSAY ORE BODIES FORM A MORE OR LESS CONTINUOUS ORE ZONE PERHAPS SEPERATED BY FAULTS. ; INFO.SRC : 1 PUB LIT; 3 FIELD OBSERV
Comment (Deposit): LENS-SHAPED ORE BODY AT SURFACE, NARROWING BELOW SURFACE AND EXTENDING DOWNWARD ALONG FAULT ZONE TO AN UNDETERMINED DEPTH. AT ABOUT 350 FEET THE ORE AVERAGES 40 FEET THICK AND BECOMES A BRECCIA FILLING AND REPLACEMENT
References
Reference (Deposit): MACKIN, J. HOOVER, 1947, SOME STRUCTURAL FEATURES OF THE INTRUSIONS IN THE IRON SPRINGS DISTRICT, UTAH: UTAH GEOL. SOC. GUIDEBOOK TO THE GEOLOGY OF UTAH, NO. 2, 62P.
Reference (Deposit): YOUNG, W.E., IRON DEPOSITS, IRON COUNTY, UTAH: U.S. BUREAU OF MINES REPORT OF INVESTIGATION 4076, 102P.
Reference (Deposit): BULLOCK, KENNETH C., 1976, IRON DEPOSITS OF UTAH: UTAH GEOL. AND MINERAL SURVEY BULLETIN 88, P 23-63.
Reference (Deposit): MACKIN, J. HOOVER AND ROWLEY, PETER D., 1976, GEOLOGIC MAP OF THE CEDAR CITY NW QUADRANGLE, IRON COUNTY, UTAH: U.S. GEOLOGICAL SURVEY MAP GQ-1295.
Reference (Deposit): 1947 DIREXPL U.S. BUREAU OF MINES, RI 4076
Reference (Deposit): 1947 RECON MACKIN, UTAH GEOL SOC. GUIDEBOOK #2
Reference (Deposit): 1954 GEOLMAP MACKIN, MINERAL INVESTIGATIONS MAP MF-14
Reference (Deposit): 1967 RECON BLANK AND MACKIN, PROF. PAPER 516-B
Reference (Deposit): 1976 GEOLMAP MACKIN AND ROWLEY, MAP GQ-1295
Reference (Deposit): 1976 RECON BULLOCK, UGMS BULLETIN 88
Reference (Production): STEGEN, R. J. 1979, GEOLOGIST
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