1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Comstock/Mountain Lion

Producer in Iron county in Utah, United States with commodity Iron
Map
XML
JSON
KML
A
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Production statistics
  16. Reserves and resources
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10299835
MRDS ID D005354
MAS/MILS ID 0490210041
Record type Site
Current site name Comstock/Mountain Lion
Alternate or previous names Mountain Lion Mine, Mountain Lion, Comstock
Related records 10011116, 10300473

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -113.3597, 37.64827 (WGS84)
Elevation 2037
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Iron(county)

Utah(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Desert Mound(quadrangle 1:24,000 scale)

Cedar City(quadrangle 1:100,000 scale)

Cedar City(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Escalante Desert(hydrologic unit)

Escalante Desert-Sevier Lake(hydrologic accounting unit)

Escalante Desert-Sevier Lake(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Federal(land status)

Geographic areas

Country State County
United States Utah Iron

Public Land Survey System information

Meridian Township Range Section Fraction State
Salt Lake 036 S 013 W 30 NW Utah

Comments on the location information

  • THE COORDINATES OF THE MILL (CRUSHING PLANT) ARE APPROXIMATE

Commodities

Commodity Importance
Iron Primary

Materials information

Materials Type of material
Apatite Unknown
Calcite Unknown
Hematite Unknown
Magnetite Unknown
Quartz Unknown

Nearby scientific data

Ore Body (1) -113.3597, 37.64827
ListMap

Economic information

Ore body information

  • Strike N25E
    Dip 30E
    Thickness 45M
    Length 610M
    Width 305M
    Depth to top 150M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 FISSURE VEIN
    Shape of Orebody #2 OTHER
    Primary mode of Origin CONT METASOMATIC
    Primary Ore Control LITHOLOGY
    Degree of Wallrock Alter. SLIGHT
    Strike And Dip N25E:30E
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 5
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 820122
  • Area 61HA
    Field Value
    Total Surface Area (HA) 61
    Date of Last Modification 910418

Comments on the geologic information

  • FISSURE TYPE OF ORE DEPOSITS ARE NOT FOUND BUT IN VERY MINOR AMOUNTS IN THE MOUNTAIN LION MINE. THE DIP AND STRIKE OF THE OREBODY AT THE MOUNTAIN LION MINE ARE ESTIMATES FROM THE LITERATURE AND FROM WHAT WAS OBSERVED IN A VISIT TO THE MINE.
  • THE ORE IS KNOWN TO CONTAIN MINOR AMOUNTS OF HEMATITE, WHICH IS MIXED WITH MAGNETITE; HOWEVER, THE PERCENT OF HEMATITE IS UNKNOWN.

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Metallic
Deposit size Medium
Significant Yes
Discovery year 1902
Mining method Open Pit
Year of first production 1970
Milling method Sizing

Mining district

District name Pinto

Mineral rights holdings

Type of mineral rights Patented

Land status

Ownership category Federal

Ownership information

  • Type Owner-Operator
    Owner Geneva Steel Corp.
    Interest 100
    Home office P. O. Box 2500, Provo, Ut 84603
    Year 1991

Comments on the ownership information

  • THE ORE IS KNOWN TO CONTAIN MINOR AMOUNTS OF HEMATITE, WHICH IS MIXED WITH MAGNETITE; HOWEVER, THE PERCENT OF HEMATITE IS UNKNOWN. GENEVA STEEL (FORMERLY KNOWN AS BASIC MFG & TECHNOLOGIES OF UTAH) PURCHASED THE MOUNTAIN LION PROPERTY FROM USX CORP IN 1987. IN 1990, GENEVA STEEL PURCHASED THE ADJACENT PROPERTY, COMSTOCK, (SEE MAS DATA BASE SEQ NO 0490210007). THE COMSTOCK AND MOUNTAIN LION MINES ARE NOW CONSIDERED AS ONE MINE, THE COMSTOCK/MT LION.

Production statistics

  • Year 1974
    Description Direct-Shipment Iron Ore 432440 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 432440mt
  • Year 1975
    Description Direct-Shipment Iron Ore 65944 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 65944mt
  • Year 1977
    Description Direct-Shipment Iron Ore 554928 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 554928mt
  • Year 1978
    Description Direct-Shipment Iron Ore 740823 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 740823mt
  • Year 1979
    Description Direct-Shipment Iron Ore 351041 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 351041mt
  • Year 1982
    Description Direct-Ship Iron Ore 200660 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 200660mt
  • Year 1983
    Description Direct-Ship Iron Ore 65240 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 65240mt
  • Year 1986
    Description Direct-Ship Iron Ore 409322 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Iron Iron 409322mt
  • Year 1988
    Description Comstock/Mt Lion Production Combined 206840 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 206840mt
  • Year 1989
    Description Direct-Ship Iron Ore (Comstock/Mt Lion) 465000 Metric Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Iron Iron 465000mt

Comments on the production information

  • SINCE THERE IS NO BENEFICIATION INVOLVED, THE YIELD DATA SET SHOWS THE CRUSHED ORE GRADE WITH 100-PERCENT RECOVERY.

Reserves and resources

  • Type In-situ
    Estimate year 1993
    Indicated 13600000mt ore
    Demonstrated 13600000mt ore
    Total resources 13600000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe3o4 54 wt-pct Iron Major 1993

Comments on the reserve resource information

  • UPDATED PEFR REPORT MARCH 1991

Workings at the site

  • Type of workings Surface
    Area 168HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Swell Factor .75
    Percent Waste Rock 51.2
    Avg. Overburden Thickness 0
    Primary Material Cover M-HARD ROCKS
    Percentage 100
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 13
    Max. Pit Slope (degrees) 60
    Capacity 1680
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 7.6
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 1
    Year of Information 1990
  • Type of workings Surface
    Area 168HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Percent Waste Rock 51.2
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 13
    Max. Pit Slope (degrees) 60
    Capacity 1240
    Capacity Units MT ORE/DAY
    Unit Production Cost 7.6
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 1
    Year of Information 1990
  • Type of workings Surface
    Area 168HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 3
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Percent Waste Rock 51.2
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 13
    Max. Pit Slope (degrees) 60
    Capacity 2800
    Capacity Units MT ORE/DAY
    Unit Production Cost 7.6
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 1
    Year of Information 1990

Comments on other economic factors

  • FISSURE TYPE OF ORE DEPOSITS ARE NOT FOUND BUT IN VERY MINOR AMOUNTS IN THE MOUNTAIN LION MINE. THE DIP AND STRIKE OF THE OREBODY AT THE MOUNTAIN LION MINE ARE ESTIMATES FROM THE LITERATURE AND FROM WHAT WAS OBSERVED IN A VISIT TO THE MINE.

Reference information

Bibliographic references

  • Reserve-Resource

    HAWES, BILL. GENEVA MAKES OLD USX OPERATIONS PROFITABLE.

  • Reserve-Resource

    PAY DIRT MAGAZINE (ROCKY MOUTAIN EDITION), DEC. 1992, PP.

  • Reserve-Resource

    4A-6A.

  • Deposit

    BULLOCK, K.C. IRON DEPOSITS OF UTAH. UTAH GEOLOGICAL AND

  • Deposit

    MINERAL SURVEY (AFFILIATED WITH THE COLLEGE OF MINES AND

  • Deposit

    MINERAL INDUSTRIES), UNIVERSITY OF UTAH, SALT LAKE CITY,

  • Deposit

    UTAH. BULL. 88, DEC. 1970, 102 PP.

  • Deposit

    CAPITAL AND OPERATING COST ESTIMATING SYSTEM HANDBOOK.

  • Deposit

    STRAAM ENGINEERS, INC. USBM CONTRACT J0255026. REV. ED.,

  • Deposit

    JUNE 1979, 374 PP.

  • Deposit

    ENGINEERING AND MINING JOURNAL. UTAH'S IRON SPRINGS DISTRICT

  • Deposit

    IS A MAJOR WESTERN RESOURCE. NOV. 1974, PP. 152-153.

  • Deposit

    ERSPAMER, T.R. MAGNETIC BENEFICIATION UTAH IRON ORES.

  • Deposit

    SKILLING'S MINING REVIEW, APRIL 25, 1964, P. 35.

  • Deposit

    GRANGER, A.E. CONSULTING GEOLOGIST. THE IRON PROVINCE OF

  • Deposit

    SOUTHWESTERN UTAH. GUIDEBOOK TO THE GEOLOGY OF SOUTHWEST-

  • Deposit

    ERN UTAH, INTERMOUNTAIN ASSOCIATION OF PETROLEUM GEO-

  • Deposit

    LOGISTS. TWELFTH ANNUAL FIELD CONFERENCE,SALT LAKE CITY,

  • Deposit

    1963, PP. 146-150.

  • Deposit

    MACKIN, J.H. IRON ORE DEPOSITS OF THE IRON SPRINGS DISTRICT,

  • Deposit

    SOUTHWESTERN, UTAH. ORE DEPOSITS OF THE UNITED STATES,

  • Deposit

    1933-1967, GRATON-SALES EDITION, VOL. 1, 1968, PP. 992.

  • Deposit

    MACVICHIE, D. IRON FIELDS OF THE IRON SPRINGS AND PINTO

  • Deposit

    MINING DISTRICTS, IRON COUNTY, UTAH. TRANSACTIONS OF THE

  • Deposit

    AMERICAN INSTITUTE OF MINING AND METALLURGICAL ENGINEERS,

  • Deposit

    VOL. 74, 1927, PP. 163-173.

  • Deposit

    MACKIN, J.H. SOME STRUCTURAL FEATURES OF THE INTRUSIONS IN

  • Deposit

    THE IRON SPRINGS DISTRICT. GUIDEBOOK TO THE GEOLOGY OF

  • Deposit

    UTAH, NO. 2. UTAH GEOLOGICAL AND MINERAL SURVEY REPRINT

  • Deposit

    98, 1974, 62 PP.

  • Deposit

    MINERAL COMMODITY SUMMARIES. USBM (WITH RESOURCE INFORMA-

  • Deposit

    TION BY THE GEOLOGICAL SURVEY, UNITED STATES DEPARTMENT OF

  • Deposit

    THE INTERIOR), 1981, P. 76.

  • Deposit

    U.S. MINERALS YEARBOOK, VOL. I, 1976, PP. 647-652.

  • Deposit

    U.S. MINERALS YEARBOOK, VOL. II, 1976, PP. 745-758.

  • Deposit

    U.S. MINERALS YEARBOOK, VOL. II, 1978-79, PP. 519-527.

  • Deposit

    PARK JR.,C.F. AND MACDIARMID. ORE DEPOSITS, THIRD EDI-

  • Deposit

    TION, 1966, PP. 280-286.

  • Deposit

    USBM PRODUCTION STATISTICS: IRON ORE, UTAH, MOUNTAIN LION

  • Deposit

    MINE, REPORT 1, 1973 THROUGH REPORT 1, 1979.

  • Deposit

    YOUNG, W.E. IRON DEPOSITS, IRON COUNTY, UTAH. USBM RI 4076,

  • Deposit

    1947, 102 PP.

General comments

Subject category Comment text
Deposit PROPERTY UPDATED FEB 1991. COMSTOCK PROPERTY (SEQ NO. 0490210007) COMBINED WITH MT LION PROPERTY. BOTH MINES ARE NOW UNDER SEQ NO. 0490210041.

Reporter information

Type Date Name Affiliation Comment
Reporter 10-OCT-96 Hite, Alan G. U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Current status (per MSHA)

StatusAbandoned since 12/16/2015
MSHA mine ID4202624
Mine name (MSHA)Comstock/Mountain Lion
Current operatorCML Metals
Current controller (parent)Luxor Capital Group; Palladon Ventures Ltd
Mine typeFacility (Metal / non-metal)

Inferred by coordinate + name similarity (1877 m, 1.00 match). Confirm against MSHA if precision matters — non-USGS-curated cross-references may occasionally point at a neighbouring mine.

Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.

Maps centered on this site