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Pine Flat Mt. Deposits

Prospect in Del Norte county in California, United States with commodities Chromium, Cobalt, Nickel
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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. Mineral occurrence model information
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Reserves and resources
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10211682
MRDS ID M007510
MAS/MILS ID 0060150082
Record type Site
Current site name Pine Flat Mt. Deposits
Alternate or previous names Pine Flat Bench, Diamond Flat
Related records 10109207

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -123.99256, 41.99292 (WGS84)
Elevation 762
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Del Norte(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

High Plateau Mountain(quadrangle 1:24,000 scale)

Happy Camp(quadrangle 1:100,000 scale)

Weed(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Smith(hydrologic unit)

Northern California Coastal(hydrologic accounting unit)

Klamath-Northern California Coastal(hydrologic subregion)

California(hydrologic region)

Federal lands

Six Rivers National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Del Norte

Public Land Survey System information

Meridian Township Range Section Fraction State
Humboldt 019 N 002 E 31 C E2SW California
Humboldt 018N 002E 06 California

Commodities

Commodity Importance
Chromium Critical Tertiary
Cobalt Critical Primary
Nickel Critical Primary

Materials information

Materials Type of material
Chalcedony Unknown
Chromite Unknown
Garnierite Unknown
Goethite Unknown
Hematite Unknown
Kaolin Unknown
Limonite Unknown
Serpentine Unknown
Talc Unknown
Wad Unknown
Chromite Unknown
Serpentine Unknown
Talc Unknown

Mineral occurrence model information

Model code 110
USGS model code 38a
Deposit model name Lateritic Ni

Nearby scientific data

Ore Body (1) -123.99256, 41.99292
ListMap

Economic information

Ore body information

  • Thickness 3.5M
    Length 1620M
    Width 800M
    Area 285HA
    Depth to top 0M
    Field Value
    Type of Orebody #1 OTHER
    Shape of Orebody #1 IRREGULAR
    Type of Orebody #2 DISSEMINATED
    Type of Orebody #3 STOCKWORK
    Primary mode of Origin RESIDUAL CONCENT
    Secondary mode of Origin OXIDATION
    Primary Ore Control LITHOLOGY
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. NONE
    Type of Wallrock Alter. #1 UNKNOWN
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 285
    Date of Last Modification 830316

Comments on the geologic information

  • SERPENTINE (MINERAL NAME)

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant Yes
Discovery year 1950
Milling method Hydrometallurgy Unspecified

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner Hanna Mining Co.
    Interest 100
    Home office Ohio
    Year 1979
  • Type Owner
    Owner Frontier International Group
    Interest 50
    Home office Texas
    Year 1987

Reserves and resources

  • Type In-situ
    Estimate year 1956
    Inferred 4000000mt ore
    Total resources 5000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 0.88 wt-pct Nickel Major 1956
    Cobalt Co 0.01 wt-pct Cobalt Major 1956
    Chromium Cr2O3 0.2 wt-pct Chromium Trace 1956
  • Type In-situ
    Estimate year 1982
    Indicated 32659000mt ore
    Demonstrated 32659000mt ore
    Inferred 32659000mt ore
    Total resources 65318000mt ore
    Commodity Subtype Grade units Group Importance Year
    Nickel Ni 0.85 wt-pct Nickel Major 1982
    Cobalt Co 0.01 wt-pct Cobalt Major 1982
    Chromium Cr2O3 0.2 wt-pct Chromium Trace 1982

Comments on the reserve resource information

  • INTERSTRAT RESOURCES, INC., OF VANCOUVER, B.C., AND A 50 PERCENT OWNER OF PINE FLAT IS PRESENTLY BEING ACQUIRED BY FRONTIER INTERNATIONAL GROUP OF CALBURN, TX, A SUBURB OF DALLAS. THIS IS A DIVERSIFIED COMPANY WITH LAND HOLDINGS SUITABLE FOR DEVELOPMENT NEAR CHANDLER, AZ, 47 OIL AND GAS WELLS, AND A 20 PERCENT OWNERSHIP OF LUNDBERG MINES, A POTASH PRODUCER IN CARLSBAD, NM, AMONG OTHERS. THE PRESIDENT OF THIS COMPANY IS MR. MICHAEL PATMAN. IN 1986, INTERSTRAT COMPLETED THE FIRST PART OF A FEASIBILITY STUDY WITH ASSISTANCE BY DAVY MCGEE CORP. THAT RECOMMENDS DEVELOPMENT OF THE PROPERTY. COST WOULD BE ALMOST $260 MILLION. THERE WOULD BE A 2,270 T/DAY MINE PRODUCING 32,700 T/Y MAGNESIUM, 6,350 T/Y NICKEL, AND 900 T/Y COBALT. MINE LIFE IS EST. TO BE 13 YEARS WITH EMPLOYMENT OF 300. THE SECOND PART OF THIS STUDY SHOULD BE INSTIGATED SOON AFTER FRONTIER COMPLETES ITS ACQUISITION.
  • TONNAGE TAKEN FROM DATA BASE. WFOC FIRST QUARTER FY1980 SHOWS "COMPLETED" REPORT. OTHER NAMES ARE PINE FLAT BENCH AND DIAMOND FLAT.BIBLIOG.INCLUDES USBUMINES RI6206, PINE FLAT & DIAMOND FLAT NICKEL-BEARING LATERITE DEPOSITS,DEL NORTE CTY, CALIF. CHROMITE IS RECOVERABLE BY GRAVITY MEANS FROM TAILINGS LEFT FROM BMRRAL PROCESS TO RECOVER NICKEL AND COBALT.
  • ONE OF SEVERAL DEPOSITS VOL. 97 NO.26 6/86 MINING RECORD APRIL, 1990 UPDATE - MINE ACTIVITY DIGEST, V 17 #2 2/28/90
  • RESERVE DATA FOR GASQUET MTN. CLAIM BLOCK ONLY. NO DATA FOR DF, DAN, JUDY, AND CAM CLAIM BLOCKS.

Workings at the site

  • Type of workings Surface
    Area 285HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN PIT
    Swell Factor .86
    Percent Waste Rock 63
    Avg. Overburden Thickness .3
    Hardness of Ore SAND, SILT
    Avg. Bench Height (meters) 6
    Max. Pit Slope (degrees) 35
    Capacity 4000
    Capacity Units MT ORE/DAY
    Preprod. Stripping Vol. 868.7
    Unit Production Cost 2.56
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 2
    Year of Information 1979

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOLOGY, V. 48, NO. 4, OCT. 1952, P. 291

  • Production

    MINING JOURNAL. 6/20/86, P. 451, PINE FLAT FEASIBILITY STUDY.

  • Deposit

    USGS B. 995-PL. 11

  • Geology

    CATER, F.W., JR., 1953, GEOLOGY AND MINERAL RESOURCES OF THE GASQUET QUADRANGLE, CALIFORNIA--OREGON: USGS BULL. 995-C

  • Deposit

    CALIF. B. 134, PT. 1, CH. 1, P. 32,PL. 1

  • Geology

    HOTZ, P.E., 1964, NICKELIFEROUS LATERITES IN SOUTHWESTERN OREGON AND NORTHWESTERN CALIFORNIA: ECON. GEOL. V 59, NO. 3

  • Geology

    CUMBERLIDGE, J.T., , GEOLOGY OF THE NICKEL MOUNTAIN MINE RIDDLE, OREGON: AIME- ORE DEPOSITS OF THE U.S., V2, 3ED

  • Geology

    ROWE, W.A., 1976, GEOLOGY OF THE NICKEL MOUNTAIN MINE,RIDDLE, ORE.: PAPER PRESENTED AT SME-AIME FALL MTG, DENVER

  • Geology

    CHANDREA, D., 1976, CHARACTERIZATION STUDY OF DOMESTIC NICKELIFEROUS LATERITES BY ELECTRON OPTICAL AND X-RAY TECHNIQUES: U.S. Bureau of Mines Open-File Report 95-76

  • Reserve-Resource

    APPLING, R.N., JR., 1956, A RECONNAISSANCE OF NICKEL DEPOSIT OF SOUTHWEST OREGON AND NORTHWEST CALIFORNIA: USBM OPEN-FILE REPORT, UNPUBLISHED.

  • Reserve-Resource

    BENSON, W.T., 1963, PINE FLAT AND DIAMOND FLAT NICKEL-BEARING LATERITE DEPOSITS, DEL NORTE COUNTY, CALIFORNIA: U.S. Bureau of Mines, Report of Investigations 6206

  • Reserve-Resource

    E&MJ , PP 35-39, JUNE, 1981.

  • Deposit

    IRWIN,W.P.,1960,GEOLOGIC RECONNAISSANCE OF THE NORTHERN COAST RANGES & KLAMATH MTS.,CALIFORNIA,WITH A SUMMARY OF THE MINERAL RESCOURCES: CAL DIV. OF MINES BULL.179, 80 p.

  • Deposit

    RICE,S.J.,1956,NICKELIFEROUS LATERITES IN NORTHWESTERN

  • Deposit

    USGS CRIB NO. MO07510

  • Deposit

    USGS CRIB NO. MO20416

  • Deposit

    Rice, S.J., 1957, Nickel in Mineral Commodities of California: CAL. DIV. OF MINES BULL. 176 p. 391-399

  • Deposit

    CALIFORNIA STATE MINING AND GEOLOGY BOARD, 1972, STATE POLICY FOR SURFACE MINING AND RECLAMATION PRACTICE: CAL.DIV. OF MINES SPEC. PUB. 51

General comments

Subject category Comment text
General Is this the same thing as the Gasquet Mountain deposit (Dep_ID 10284620)? Look at statement in Comments, Reserve-Resource line 4.

Reporter information

Type Date Name Affiliation Comment
Reporter 22-JUN-94 Ridenour, James U.S. Bureau of Mines
Updater 27-OCT-10 S.W. Nicholson U.S. Geological Survey verified location, consolidated records 10033770 and 10109207 into this one. Record 10033771 is a related record (eastern extension of Pine Flat Mt. Deposits)

Beyond USGS

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

External references

Maps centered on this site

Authoritative California resources

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