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Rossi Mine

Producer in Elko county in Nevada, United States with commodity Barium-Barite
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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. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10221439
MRDS ID M232821
MAS/MILS ID 0320070094
Record type Site
Current site name Rossi Mine
Alternate or previous names Dunphy Mine, National Lead Co. Mine, Sage Hen
Related records 10045151, 10310519

Comments on the site names

  • OTHER NAME: SAGE HEN. OPERATOR: TOM NORRIS.

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -116.42623, 41.0674 (WGS84)
Elevation 1770
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Elko(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Santa Renia Fields(quadrangle 1:24,000 scale)

Tuscarora(quadrangle 1:100,000 scale)

McDermitt(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Rock(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management NV)

Bureau of Land Management NV BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Nevada Elko

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 037 N 049 E 22 N2N2 Nevada

Commodities

Commodity Importance
Barium-Barite Critical Primary

Materials information

Materials Type of material
Barite Unknown
Chert Unknown
Witherite Unknown

Nearby scientific data

Main Entrance (1) -116.42623, 41.0674
ListMap

Economic information

Ore body information

  • Strike N55E
    Dip 60N
    Thickness 10M
    Length 1800M
    Depth to top 0M
    Field Value
    MAS Matrix # 3
    MAS Column # 1
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 TABULAR
    Shape of Orebody #2 MASSIVE
    Shape of Orebody #3 IRREGULAR
    Primary mode of Origin SEDIMENTATION
    Secondary mode of Origin HYDROTHERMAL
    Primary Ore Control BEDDING
    Degree of Wallrock Alter. NONE
    Strike And Dip N55E:60N
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830714
  • Area 75HA
    Field Value
    Total Surface Area (HA) 75
    Date of Last Modification 910418

Comments on the geologic information

  • GEOMETRY DESCRIBES SAGE HEN DEPOSIT. ORIGIN OF ROSSI ORE- BODIES DEPOSITIONAL ENVIRONMENT WAS MARINE EXHALATIVE ORIGINATING FROM SUBMARINE HOT SPRINGS WITH BARIUM SULPHATE AND CHERT DEPOSITED SIMULTANEOUSLY.

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Non-metallic
Deposit size Large
Significant Yes
Discovery year 1937
Year of first production 1947
Milling method Jig

Mining district

District name Bootstrap District

Mineral rights holdings

Type of mineral rights Patented

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Operator
    Owner Tom Norris
    ID 2600397
    Home office Nevada
    Year 1982
  • Type Owner-Operator
    Owner Nl Baroid, Inc.
    ID 2600397
    Home office Nevada
    Year 1991

Production statistics

  • Year 1947
    Description Direct Shipping Ore/ Sage Hen Deposit 48172 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 48172mt
  • Year 1948
    Description Direct Shipping Ore/ Sage Hen Deposit 13538 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 13538mt
  • Year 1949
    Description Direct Shipping Ore/ Sage Hen Deposit 42838 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 42838mt
  • Year 1950
    Description Direct Shipping Ore/ Sage Hen Deposit 23029 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 23029mt
  • Year 1951
    Description Direct Shipping Ore/ Sage Hen Deposit 33654 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 33654mt
  • Year 1952
    Description Direct Shipping Ore/ Sage Hen Deposit 50946 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 50946mt
  • Year 1953
    Description Direct Shipping Ore/ Sage Hen Deposit 32393 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 32393mt
  • Year 1954
    Description Direct Shipping Ore/ Sage Hen Deposit 47284 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 47284mt
  • Year 1956
    Description Direct Shipping Ore/ Sage Hen Deposit 42546 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 42546mt
  • Year 1960
    Description Direct Shipping Ore/ Sage Hen Deposit 87503 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 87503mt
  • Year 1962
    Description Direct Shipping Ore/ Sage Hen Deposit 34417 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 34417mt
  • Year 1963
    Description Direct Shipping Ore/ Sage Hen Deposit 11682 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 11682mt
  • Year 1964
    Description Direct Shipping Ore/ Sage Hen 1209 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 1209mt
  • Year 1966
    Description Direct Shipping Ore/ Sage Hen 16724 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 16724mt
  • Year 1967
    Description Direct Shipping Ore/ Sage Hen 19994 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 19994mt
  • Year 1968
    Description Direct Shipping Ore/ Sage Hen 71503 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 71503mt
  • Year 1969
    Description Direct Shipping Ore/ Sage Hen 82846 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 82846mt
  • Year 1970
    Description Direct Shipping Ore/ Sage Hen 13612 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 13612mt
  • Year 1971
    Description Direct Shipping Ore/ Sage Hen Deposit 9086 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 9086mt
  • Year 1972
    Description Direct Shipping Ore/ Sage Hen Deposit 12054 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 12054mt
  • Year 1973
    Description Direct Shipping Ore/ Sage Hen Deposit 14149 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 14149mt
  • Year 1974
    Description Direct Shipping Ore/ Sage Hen Deposit Tonnes Annual Production
  • Year 1975
    Description Direct Shipping Ore/Sage Hen Deposit 35865 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 35865mt
  • Year 1976
    Description Flotation Concentrates/ Queen Lode Depos 34404 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 34404mt
  • Year 1976
    Description Direct Shipping Ore/ Sage Hen Deposit 80167 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 80167mt
  • Year 1977
    Description Jigged Ore Produced/ Sage Hen Deposit 21398 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 21398mt
  • Year 1977
    Description Flotation Concentrates/ Queen Lode Depos 7705 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 7705mt
  • Year 1977
    Description Direct Shipping Ore/ Sage Hen Deposit 21398 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 21398mt
  • Year 1978
    Description Jigged Ore Produced/ Sage Hen Deposit 37935 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 37935mt
  • Year 1978
    Description Direct Shipping Ore/ Sage Hen Deposit 210287 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 210287mt
  • Year 1979
    Description Direct Shipping Ore/ Sage Hen Deposit 148376 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 148376mt
  • Year 1980
    Description Jigged Ore Produced/ Sage Hen Deposit 91741 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 91741mt
  • Year 1980
    Description Flotation Concentrates/ Queen Lode Depos 28773 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 28773mt
  • Year 1980
    Description Direct Shipping Ore/ Sage Hen Deposit 260955 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 260955mt
  • Year 1981
    Description Flotation Concentrates/ Queen Lode Depos 9871 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 9871mt
  • Year 1981
    Description Direct Shipping Ore/ Sage Hen Deposit 272155 Tonnes Annual Production
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Barium-Barite Barium 272155mt

Comments on the production information

  • IT IS ASSUMED HERE THAT ALL THE ORES OF DIFFERENT SPECIFIC GRAVITY IS FINALLY REDUCED AT THE DUNPHY MILL TO A SINGLE PRODUCT - GROUND MUD GRADE BARITE, SPECIFIC GRAVITY 4.2T. IN ACTUALITY, DEPENDING ON MARKET DEMAND AND ECONOMICS, ANY ONE OR COMBINATION OF FIVE PRODUCTS WILL BE PRODUCED; HIGH-GRADE DIRECT SHIPPED ORE, HIGH-GRADE/FIND GROUND, LOW-GRADE JIGGED/SHIPPED, LOW-GRADE JIGGED/FINE GROUND, AND/OR LOW-GRADE FLOATED/FINE GROUND. OPERATING COSTS IN DOLLARS PER TONNE ORE MINED FOR THE ABOVE PRODUCTS ARE AS FOLLOWS: (DUNPHY PLANT PROCESS COST) A) HIGH-GRADE DIRECT SHIPPED = $ 2.77 B) HIGH-GRADE, FINE GROUND = $13.53 C) LOW-GRADE JIGGED, SHIPPED = $ 1.04 D) LOW-GRADE JIGGED, FINE GROUND = $ 6.94 E) LOW-GRADE FLOATED, FINE GROUND= $19.61

Comments on the reserve resource information

  • M3C1=M1C1+M2C1. M5C1=M1C1+M2C1+M4C1. M5C2=M1C1+M2C1. TONNAGE AND GRADE OF MATRICES ARE ESTIMATED BASED ON 1981 RESERVE OF 7.2 MILLION SHORT TON OF +4.2 SPECIFIC GRAVITY BARITE SALEABLE PRODUCT FROM ORES ORIGINATING FROM SAGE HEN AND QUEEN LODE DEPOSITS ONLY. DIVISION OF THIS RESERVE INTO SEPARATE DEPOSITS IS BASED ON PRODUCTION CAPACITIES FOR DIFFERENT ORE GRADES AND ADDITIONS OF ESTIMATED BARITE LOSSES IN THE MILLING PROCESSES. FALL 1982 FIELD VISIT BY ROBERT WELDIN AND AREL MC MAHAN, OF WFOC. MATRIX ONE (COL 1) REFLECTS SAGE HEN DIRECT SHIPPING CRUDE ORE TONNAGE AND GRADE. SPECIFIC GRAVITY (S.G.) EQUALS 4.2. MATRIX TWO (COL 1) REFLECTS SAGE HEN JIGGING GRADE ORE. S.G.= 3.9 MATRIX THREE (COL 1) REFLECTS COMBINED DIRECT SHIPPING AND JIGGING ORE OF SAGE HEN. S.G.= 4.02. MATRIX THREE (COL 2) REFLECTS SAGE HEN DIRECT SHIPPING RESOURCE ONLY. S.G.= 4.2. MATRIX FOUR (COL 1) REFLECTS QUEEN LODE RESOURCES (FLOTATION ORE). S.G.= 3.65. MATRIX FIVE (COL 1) REFLECTS COMBINED RESOURCES OF SAGEHEN DIRECT SHIPPING, SAGE HEN JIGGING ORE, AND QUEEN LODE FLOTATION ORE. AVERAGE (WEIGHTED) S.G.= 4.0. MATRIX FIVE (COL 2) REFLECTS COMBINED RESOURCES OF SAGEHEN DIRECT SHIPPING ORE AND SAGE HEN JIGGING ORE. S.G.= 4.02 MATRIX FIVE (COL 3) REFLECTS SAGE HEN DIRECT SHIPPING ORE ONLY. S.G.= 4.2. M9C4=M5C1=M1C1+M2C1+M4C1. MATRIX NINE (COL 4) REFLECTS WFOC COMBINED SAGEHEN DIRECT SHIPPING, SAGEHEN JIGGING GRADE, AND QUEEN LODE FLOTATION GRADE RESOURCES.

Workings at the site

  • Type of workings Surface
    Area 14HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Swell Factor .45
    Percent Waste Rock 78.9
    Hardness of Ore M-HARD ROCKS
    Max. Pit Slope (degrees) 45
    Capacity 464
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 14.27
    Units of Production $/MT ORE
    Operating Days per Year 280
    Operating Shifts per Day 1
    Year of Information 1983
  • Type of workings Surface
    Area 3HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Swell Factor .45
    Percent Waste Rock 78.9
    Hardness of Ore M-HARD ROCKS
    Max. Pit Slope (degrees) 45
    Capacity 196
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 0
    Unit Production Cost 14.27
    Units of Production $/MT ORE
    Operating Days per Year 280
    Operating Shifts per Day 1
    Year of Information 1983

Reference information

Bibliographic references

  • Deposit

    77. CARLSON, G. N., AND R. A. BAUER. BARITE - U.S.

  • Deposit

    PRODUCTION CONTINUES STRONG, SETS RECORD AT 2.4 MILLION

  • Deposit

    S.T. ENG. AND MIN. J., V. 183, NO. 3, 1982, PP. 135-136.

  • Deposit

    87. CLARKE, G. (ED.). BAYRITES IN NEVADA - BACK TO

  • Deposit

    PRE-1974 LEVELS. IND. MIN. (LONDON), NO. 200, MAY 1984,

  • Deposit

    PP. 53-61.

  • Deposit

    95. COOPE, B. M. (ED.). WORLD BARYTES PRODUCERS - A

  • Deposit

    REVIEW. IND. MIN. (LONDON), NO. 130, 1978, PP. 39-40.

  • Deposit

    123. DUNHAM, A. C., AND J. S. HANOR. CONTROLS ON BARITE

  • Deposit

    MINERALIZATION IN THE WESTERN UNITED STATES. ECON. GEOL.

  • Deposit

    AND BULL. SOC. ECON. GEOL., V. 62, NO. 1, 1967,

  • Deposit

    PP. 82-94.

  • Deposit

    226. GRANGER, A. E., M. M. BELL, G. C. SIMMONS, AND F.

  • Deposit

    LEE. GEOLOGY AND MINERAL RESOURCES OF ELKO COUNTY,

  • Deposit

    NEVADA. NV BUREAU OF MINES AND GEOL. BULL. 54, 1957, 190

  • Deposit

    PP.

  • Deposit

    278. HOPE, R. A., AND R. R. COATS. PRELIMINARY GEOLOGIC

  • Deposit

    MAP OF ELKO COUNTY, NEVADA. U.S. GEOL. SURV. OPEN-FILE

  • Deposit

    MAP 76-779, 6 SHEETS, 1976, SCALE 1:100,000.

  • Deposit

    392. MAHONEY, S. R. BARITE INDUSTRY CUTS BACK, FACES

  • Deposit

    SEVEN NEGATIVE FACTORS. NV MIN. ASSOC. BULL., V. 6,

  • Deposit

    NO. 3, 1982, PP. 4-5.

  • Deposit

    449. MITCHELL, A. W. GEOLOGY OF SOME BEDDED BARITE

  • Deposit

    DEPOSITS IN NORTH CENTRAL NEVADA. M.S. THESIS, UNIV. NV,

  • Deposit

    RENO, NV, 1977, 58 PP

  • Deposit

    546. PAPKE, K. BARITE DEPOSITS IN NEVADA. NV BUREAU OF MINES

  • Deposit

    AND GEOL. BULL. 98, 1984, 125 PP.

  • Deposit

    669. SMITH, R. M. MINERAL RESOURCES OF ELKO COUNTY,

  • Deposit

    NEVADA. U.S. GEOL. SURV. OFR 76-56, 1976, 194 PP.

  • Deposit

    688. STATE OF NEVADA. DIRECTORY OF NEVADA MINE OPERATIONS

  • Deposit

    ACTIVE DURING CALENDAR YEAR 1982. DEP. IND. RELATIONS, NV

  • Deposit

    DIV. MINE INSP., 1983, 60 PP.

  • Deposit

    775. WARREN, R. E. MINE CLOSURES SIGNAL DRAMATIC

  • Deposit

    TURN-DOWN IN MINING INDUSTRY. NV MIN. ASSOC. BULL., V. 6,

  • Deposit

    NO. 3, 1982, PP. 1-3, 20.

  • Deposit

    778. WATSON, I. BARYTES - U.S. DRILLING DOWNTURN WEIGHS

  • Deposit

    HEAVILY ON THE MARKET. IND. MIN. (LONDON), NO. 183, 1982,

  • Deposit

    PP. 21-57.

  • Deposit

    WHITE, L. NEVADA BARITE OUTPUT UP SHARPLY IN '70'S. PAPER

  • Deposit

    ENGINEERING AND MINING JOURNAL OPERATING HANDBOOK OF

  • Deposit

    MINERAL SURFACE MINING AND EZPLORATION, R. HOPPE, ED.

  • Deposit

    MCGRAW-HILL, V. 2, 1978, PP. 444-445.

  • Deposit

    NEV. DIV. MINE INSPECTION, 1991, DIRECTORY OF NEVADA MINE

  • Deposit

    OPERATIONS ACTIVE DURING CALENDAR YEAR 1990, P. 21.

Reporter information

Type Date Name Affiliation Comment
Reporter 28-JUL-97 Spear, James M. 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 07/29/2003
MSHA mine ID2600397
Mine name (MSHA)Rossi Mine
Current operatorN A Degerstrom Inc
Current controller (parent)N A Degerstrom
Mine typeSurface (Metal / non-metal)

MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.

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

External references

Maps centered on this site

Authoritative Nevada resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.