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Crystal Mine

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 10263769
MRDS ID W006938
MAS/MILS ID 0080570002
Record type Site
Current site name Crystal Mine
Alternate or previous names Crystal Fluorspar Mine, Green Crystal

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -106.59093, 40.68217 (WGS84)
Elevation 2867
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Jackson(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pitchpine Mountain(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)

Federal lands

Medicine Bow-Routt 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 Colorado Jackson

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 008 N 082 W 10 NWNW Colorado

Commodities

Commodity Importance
Calcium Tertiary
Fluorine-Fluorite Critical Primary
Silica Tertiary

Materials information

Materials Type of material
Fluorite Unknown
Hematite Unknown
Limonite Unknown
Marcasite Unknown
Pyrite Unknown
Quartz Unknown

Nearby scientific data

Main Entrance (1) -106.59093, 40.68217
ListMap

Economic information

Ore body information

  • Strike N30W
    Dip 54S
    Thickness 3.6M
    Length 900M
    Width 73M
    Area 125HA
    Depth to top 49M
    Field Value
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 BRECCIA FILL
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FRACTURING
    Secondary Ore Control FAULTING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 PYRITIZATION
    Type of Wallrock Alter. #2 SILICIFICATION
    Strike And Dip N30W:54S
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 3
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 125
    Date of Last Modification 820929

Comments on the geologic information

  • THE MAIN VEIN AT ITS SOUTHERN END STRIKES N25-35W AND DIPS 54SW. THIS SEGMENT OF THE VEIN IS 305 M LONG, AND IT INTERSECTS AN ADJOINING FAULT WHICH IT FOLLOWS ALONG A BEARING OF N5W, DIPPING 63W FOR ANOTHER 610 M. TOTAL VEIN LENGTH, THEREFORE, IS ABOUT 915 M. VEIN THICKNESS IS HIGHLY VARIABLE, RANGING FORM A MAXIMUN OF 3.6 M TO A COMPLETE PINCHOUT LOCALLY. IN ADDITION TO PRE-CAMBRIAN FAULTING, FAULTING ALSO IS EVIDENT FROM LARAMIDE AND MIDDLE TO LATE TERTIARY.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Both
Significant Yes
Discovery year 1920
Mining method Shrinkage Methods
Year of first production 1945
Milling method Flotation

Mining district

District name Crystal

Mineral rights holdings

Type of mineral rights Located Claim
Type of mineral rights Patented

Land status

Ownership category National Forest

Ownership information

  • Type Owner-Operator
    Owner Ozark-Mahoning Co. (Pennwalt Corp. Subsidiary)
    Interest 100
    Home office Oklahoma
    Year 1982
    First year 1970

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 MATERIALS.

Comments on the reserve resource information

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

Workings at the site

  • Type of workings Underground
    Length 1135M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method SHRINKAGE METHODS
    Swell Factor .33
    Percent Waste Rock 20
    Percent Recovery 90
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics NO PLANES OF WEAKNESS
    Rock Support Chars. SUPPORTING
    Mine Support Chars. TIMBER
    Avg. Length of Adits (m) 378
    Number of Adits 3
    1st Condition of Workings PART ACCESSIBLE
    Capacity 139
    Capacity Units MT ORE/DAY
    Unit Production Cost 42.05
    Units of Production $/MT ORE
    Operating Days per Year 312
    Operating Shifts per Day 2
    Year of Information 1982

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

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

  • Deposit

    Hail, W.J., Jr., 1965, Geology of norhtwetern North Park, Colorado: USGS Bull. 1188, 133 p.

  • Deposit

    Snyder, G.L., Patten, L.L., and Daniels, J.J., 1987, Mineral resources of the Mount Zirkel Wilderness and northern Park Range vicinity, Jackson and Routt counties, Colorado: U.S. Geological Survey Bulletin 1554, 236 p.

General comments

Subject category Comment text
Deposit THE FIRST COMPLETE INTERMOUNTAIN FIELD OPERATION CENTER (IFOC) EVALUATION OF THIS PROPERTY WAS COMPLETED DURING 1982. NO IFOC 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
Editor 20-JUN-11 Wilson, Anna B U.S. Geological Survey

Beyond USGS

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

External references

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.