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Fluorspar Vein Properties

Past Producer in Jackson county in Colorado, United States with commodities Calcium, Fluorine-Fluorite, Silica
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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. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10287911
MRDS ID W006943
MAS/MILS ID 0080570033
Record type Site
Current site name Fluorspar Vein Properties
Alternate or previous names Fluorspar Vein, Fluorspar Claims, Fluorspar Mine, Northgate, Northgate Mine, Northgate Fluorspar, Cherry Open Pit, Northgate Ozark, Feldspar claim

Comments on the site identification

  • The Fluorspar Vein properties includes the Gero and Penber Mines, and the Springer Pit.

Geographic coordinates

Point of reference Geographic coordinates: Elevation UTM Precision Relative position Point location
Main Entrance -106.27702, 40.92937 (WGS84) 2653 100 Coordinates for main pit shown on topo.
(click for info)
Pit -106.27472, 40.92417 (WGS84) 10 Gero Mine symbol shown on topo.
Pit -106.27361, 40.92389 (WGS84) 10 Penber Mine symbol labeled on topo. In extreme NW of SW of Sec. 16, less than 100 m SE of Gero Mine.
Pit -106.27694, 40.93417 (WGS84) 10 Springer Pit labeled on topo.

Site location context

Political divisions (FIPS codes)

Jackson(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Northgate(quadrangle 1:24,000 scale)

Walden(quadrangle 1:100,000 scale)

Craig(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North Platte Headwaters(hydrologic unit)

North Platte(hydrologic accounting unit)

North Platte(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Colorado Jackson

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 011 N 079 W 17 E2NE Colorado
6th Principal 011N 079W 16 NW4 of SW4 Colorado
6th Principal 011N 079W 8 E2 Colorado

Commodities

Commodity Importance
Calcium Tertiary
Fluorine-Fluorite Critical Primary
Silica Tertiary

Materials information

Materials Type of material
Barite Unknown
Chalcedony Unknown
Fluorite Unknown
Limonite Unknown
Microcline Unknown
Pyrite Unknown
Quartz Unknown

Nearby scientific data

Main Entrance (1) -106.27702, 40.92937
ListMap
Pit (2) -106.27472, 40.92417
ListMap
Pit (4) -106.27361, 40.92389
ListMap
Pit (5) -106.27694, 40.93417
ListMap

Economic information

Ore body information

  • Strike N10W
    Dip 85E
    Thickness 305M
    Length 1220M
    Width 250M
    Depth to top 122M
    Field Value
    MAS Matrix # 1
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 LENTICULAR
    Type of Orebody #2 SHEAR ZONE
    Shape of Orebody #2 IRREGULAR
    Type of Orebody #3 BRECCIA FILL
    Shape of Orebody #3 TABULAR
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FRACTURING
    Secondary Ore Control FAULTING
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 SERICITIC
    Strike And Dip N10W:85E
    Minimum Depth to Top .6
    Avg. Thick. Unconsol. Mat. 3
    Min. Thick. Unconsol. Mat. .6
    Date of Last Modification 820929
  • Area 195HA
    Field Value
    Total Surface Area (HA) 195
    Date of Last Modification 910418

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Both
Significant Yes
Discovery year 1900
Discoverer Frank Heaton
Mining method Shrinkage Methods
Year of first production 1922
Milling method Flotation

Mining district

District name Northgate

Mineral rights holdings

Type of mineral rights Patented
Type of mineral rights Located Claim

Land status

Ownership category Federal

Ownership information

  • Type Owner-Operator
    Owner Ozark-Mahoning Co. (Pennwalt Corp. Subsidiary)
    Interest 100
    Home office Oklahoma
    Year 1982
  • Type Owner
    Owner Colorado Fluorspar Corp.
    Year 1947
    First year 1922
  • Type Operator
    Owner W.D. Tripp Mining Co.
    Year 1971
  • Type Owner
    Owner Western Fluorspar Corp.

Comments on the production information

  • ACTUAL RECOVERIES FOR THE ACID GRADE FLUORSPAR CONCENTRATE (PA) AND THE BRIQUETTES (PB) ARE 44.5 AND 43.6 PERCENT, RESPECTIVELY, FOR THE FLOURSPAR. ACTUAL SIO2 ORE-TO-CONCENTRATE RECOVERY FOR CONCENTRATE-TO- BRIQUETTE RECOVERY IS 0.306 PERCENT. SIO2 IS EXPECTED TO INCREASE FROM THE FLUORSPAR CONCENTRATE TO THE BRIQUETTES BECAUSE OF IMPURITY SIO2 CONTAINED IN THE CA(OH)2 ADDED AS ONE OF THE BRIQUETTE BINDER MATERI- ALS.

Comments on the reserve resource information

  • NO PUBLISHED OZARK-MAHONING RESERVE DATA COULD BE FOUND AT THE TIME OF THIS 1982 MAS PROPERTY EVALUATION. There are no reported reserves.

Workings at the site

  • Type of workings Underground
    Overall depth 37M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method SHRINKAGE METHODS
    Swell Factor .33
    Percent Waste Rock 0
    Percent Recovery 90
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics NO PLANES OF WEAKNESS
    Rock Support Chars. SUPPORTING WHEN DRY
    Mine Support Chars. TIMBER
    1st Condition of Workings PLUGGED
    Capacity 195
    Capacity Units MT ORE/DAY
    Unit Production Cost 32.55
    Units of Production $/MT ORE
    Operating Days per Year 312
    Operating Shifts per Day 2
    Year of Information 1982

Comments on the workings information

  • RAW WATER IS PUMPED TO THE FLUORSPAR VEIN PROPERTIES AND THE ADJOINING NORTHGATE MILL FROM TWO SOURCES: (1) A 15 CENTIMETER DIAMETER, 1830 METER WATER LINE BRINGS WATER FROM PINKHAM CREEK WHICH IS SOUTH OF THE PROPERTY. THIS LINE HAS A 10 CENTIMETER BACK-UP LINE. (2) A 20 CENTIMETER LINE BRINGS WATER 5490 METERS FROM THE NORTH PLATTE RIVER. CLAIM PATENT DESCRIPTIONS DESCRIBE THE MINING DISTRICT AS THAT OF COPPER RIDGE, A NAME FORMERLY APPLIED TO A LARGE, INDEFINITE AREA IN NORTHERN COLORADO AND SOUTHERN WYOMING. THIS NAME HAS BEEN DROPPED FROM LOCAL USAGE, AND THE MORE RESTRICTED AREA IN THE VICINITY OF THE FLUORSPAR DEPOSITS NOW IS CALLED THE NORTHGATE DISTRICT, AFTER THE SHIPPING POINT OF NORTHGATE ON THE UNION PACIFIC RAILROAD.

Reference information

Bibliographic references

  • Deposit

    CARLSON, J. W., 1970, OZARK-MAHONING COMPANY, NORTHGATE, COLORADO: DECO TREFOIL, DENVER EQUIPMENT DIVISION, JOY MANUFACTURING COMPANY, SUMMER 1970 ISSUE, P. 9-16.

  • Deposit

    Steven, T.A., 1960, Geology and fluorspar deposits, Northgate district, Colorado: USGS Bull. 1082-F, p. 323-422.

  • Deposit

    Van Alstine, R.E., 1947, Fluorspar Investigations -- Northgate District, Jackson County, in Vanderwilt, J.W., Mineral Resources of Colorado: State of Colorado Mineral Resources Board, p. 457-465.

  • Deposit

    WARNE, J. D., 1947, NORTHGATE FLUORSPAR, JACKSON COUNTY, COLO.: U.S. BUREAU OF MINES RESEARCH INVESTIGATIONS RI-4106, 23 p.

  • Deposit

    Neubert, J.W., and Dersch, J.S., 1994, Mineral Appraisal of Routt National Forest, Colorado: USBM MLA 13-94, 64 p., 6 appendices.

  • Deposit

    COLO. BU. OF MINES 1956 RPT.

  • Deposit

    COLO. SCH. OF MINES QUART., V. 44 NO. 2, 1949, P. 187-188.

  • Deposit

    CONSV. DIV. COMP. DATE, 1,62.

  • Deposit

    Cox, D.C., Benson, W.E.B., Steven, T.A., and Van Alstine, R.E., 1948, Flurospar deposits of the Northgate District, Jackson County, Colorado: U.S. Geological Survey Strategic Minerals Investigations Report 3-220, 14 p. [(200)St8pr no.3-220]

General comments

Subject category Comment text
Deposit THE FIRST COMPLETE INTERMOUNTAIN FIELD OPERATION CENTER (IFOC) EVALUATION OF THIS PROPERTY WAS COMPLETED DURING 1982. NO INSPECTION OF THIS FACILITY WAS MADE PRIOR TO OR DURING THIS EVALUATION.

Reporter information

Type Date Name Affiliation Comment
Reporter 02-MAR-95 Witkowsky, Dan U.S. Bureau of Mines
Updater 16-JUN-11 Wilson, Anna B U.S. Geological Survey merged and deleted multiple duplicate records.
Reporter 25-NOV-83 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines MAS 0080570038 = newMRDS 10142218, MAS 0080570108 = newMRDS 10288107, also, 17-nov-1983 MAS 080570127 = newMRDS 10263580.
Reporter 01-DEC-72 Conservation Division Files U.S. Geological Survey MRDS DC01737 = newMRDS 10016640, MRDS DC01736 = newMRDS 10091125, MRDS DC01739 = newMRDS 10091126, MRDS DC01733 = newMRDS 10016638, MRDS DC01738 = newMRDS 10016641

Beyond USGS

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

Maps centered on this site

Authoritative Colorado resources

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