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Twenty - One and Twenty - Seven Fluorspar Mines

Producer in Cibola county in New Mexico, United States with commodities Fluorine-Fluorite, Quartz, Calcium
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Production statistics
  17. Reserves and resources
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10069412
MRDS ID W006931
Record type Site
Current site name Twenty - One and Twenty - Seven Fluorspar Mines
Related records 10296247, 10296495

Geographic coordinates

Geographic coordinates: -107.98506, 34.97589 (WGS84)
Elevation 2249
Relative position 23 KM. SOUTHWEST OF GRANTS.

Site location context

Political divisions (FIPS codes)

Cibola(county)

New Mexico(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Arrosa Ranch(quadrangle 1:24,000 scale)

Acoma Pueblo(quadrangle 1:100,000 scale)

Socorro(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North Plains(hydrologic unit)

Rio Grande-Elephant Butte(hydrologic accounting unit)

Rio Grande-Elephant Butte(hydrologic subregion)

Rio Grande(hydrologic region)

Federal lands

Cibola 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 New Mexico Cibola

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 009N 011W 21,27 New Mexico

Comments on the location information

  • TWENTY - SEVEN LIES ABOUT 2 KM. SOUTHEAST OF TWENTY - ONE. ALTITUDE GIVEN ABOVE IS FOR 27 MINE. THE 21 MINE IS AT 2341 M. LATITUDE AND LONGITUDE FOR THE 27 MINE ARE GIVEN ABOVE; THOSE FOR THE 21 MINE ARE 34 DEG 59 MIN 22 SEC N, 107 DEG 59 MIN 58 SEC W.

Commodities

Commodity Importance
Fluorine-Fluorite Critical Primary
Quartz Tertiary
Calcium Tertiary

Comments on the commodity information

  • SMALL AMOUNTS OF BARITE, SPHALERITE, GALENA AND CHALCOPYRITE EXIST LOCALLY.

Analytical data

Result 27 VEIN - 40.0% CAF2, 25.0% SIO2, 34.0% CACO3. 21 VEIN - 55% CAF2, 14.0% SIO2, 25.0% CACO3

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
  • Host or associated Associated
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Gneissic Granite;Dikes-Monzonite, Diorite, Hornblendite Etc
    Rock description Gneissic Granite;Dikes-Monzonite, Diorite, Hornblendite Etc
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) -107.98506, 34.97589
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Zuni Mountains To The Northwest
Type of structure Local
Structure description Strong Northwest Trending Faults - The 21 And 27 Faults Are In Direct Contact With These Faults. The General Structure Of The District Is That Of An Elongate Dome Of Precambrian Rocks Surrounded By Gently Outward - Dipping Permian Sedimentary Rocks. Faults Partly Bound The Precambrian Area, And Near These Faults The Permian Rocks Have Been Dragged So That They Dip Steeply, And In Places Are Overturned.

Ore body information

  • General form LINEAR

Comments on the ore body information

  • THE DEPOSITS OCCUPY NARROW FAULT ZONES THAT CONTAIN HORSES OF ROCK AND MUCH GOUGE THAT IS PRINCIPALLY ON THE FOOTWALLS. THE FISSURES GENERALLY TREND N 50 - 60 DEG E., BUT AT IRREGULAR INTERVALS THEY BRANCH EASTWARD FOR SHORT DISTANCES AND USUALLY DIVERT THE VEIN FROM THE MAIN FISSURE TO ONE PARALLEL WITH IT. THE VEINS ARE CUT BY CROSS FAULTS WHICH ARE USUALLY OF SMALL DISPLACEMENT. THE TWENTY - SEVEN VEIN DIFFERS FROM THE TWENTY - ONE VEIN IN THAT IT WAS EXTENSIVELY FAULTED AFTER FLUORSPAR DEPOSITION AND LATER RECEMENTED WITH MORE FLUORITE. AS A RESULT, THE 27 VEIN IS WIDER BUT OF LOWER OVER - ALL GRADE DUE TO THE ROCK GOUGE AND CLAY IMPURITIES. THE CONTAINING FAULTS ARE SO PERSISTANT IN LENGTH AND HAVE SHATTERED THE ROCK SO INTENSELY THAT THEY PROBABLY EXTEND TO MUCH GREATER DEPTHS THAN EXPLORED IN THE WORKINGS. AS NO SIGNIFICANT CHANGE HAS BEEN NOTED IN THE CHARACTER OF THE ORE ON THE LOWER LEVELS AS COMPARED TO THAT ON THE UPPER LEVELS, THE FLUORSPAR MAY BE EXPECTED TO PERSIST AT
  • DEPTH IN THESE FRACTURES (ROTHROCK 1946)

Controls for ore emplacement

  • Fault Zone - The Distribution Of The Ore Bodies Along The Veins Seems To Be Controlled Chiefly By Abrupt Changes In Strike. In The Veins Of Northeasterly Trend, Where The Southeast Wall Has Moved Southwest, The More Easterly - Trending Parts Of The Vein Fissures Tend To Be More Open Than The Rest Of The Vein And These Parts Generally Contain The Principal Ore Bodies. The More Northeasterly Trending Parts Of These Veins Are Relatively Narrow And Of Low Grade.

Comments on the geologic information

  • GRANITE IS PINKISH TO MEDIUM GRAY, FINE - TO COARSE - GRAINED, LOCALLY PORPHYRITIC. COMPOSED OF ORTHOCLASE, QUARTZ, OLIGOCLASE AND ABUNDANT HORNBLENDE AND BIOTITE. APPARENTLY PART OF A BATHOLITH.

Economic information about the deposit and operations

Development status Producer
Commodity type Non-metallic
Significant No
Year of first production 1918

Mining district

District name Zuni Mountains District

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Zuni Milling Co.
  • Type Owner
    Owner Shattuck - Denn Corp.

Production statistics

  • Year 1943
    Period 1941 - 1943
    Material F
    Accuracy Accurate
    Description Cp_Grade: ^17 - 81 % Caf2
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major CaF2 Fluorine-Fluorite Fluorine 49wt-pct
  • Year 1944
    Period 1943 - 1944
    Material F
    Accuracy Accurate
    Description Cp_Grade: ^17 - 77 % Caf2
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major CaF2 Fluorine-Fluorite Fluorine 47wt-pct
  • Year 1953
    Period 1941 - 1953
    Material F
    Accuracy Accurate
    Description Cp_Grade: ^Probably Avg. 45 - 50 % Caf2 (See Analytical Data)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major CaF2 Fluorine-Fluorite Fluorine 48wt-pct

Comments on the production information

  • ITEM 8 REPORTS THRU NOV. 1943; ITEM 9 REPORTS NOV. 1943 THRU DEC. 31, 1944.

Reserves and resources

  • Type In-situ
    Estimate year 1943
    Total resources 58538000mt ore
    Commodity Subtype Grade units Group Importance Year
    Fluorine-Fluorite CaF2 74.3 wt-pct Fluorine Major 1943
    Quartz SiO2 7 wt-pct Silica Trace 1943

Comments on the reserve resource information

  • SEPTEMBER, 1943 ESTIMATE. PRODUCTION SINCE THEN HAS REMOVED APPROXIMATELY THIS TONNAGE BUT OF LOWER GRADE (PROBABLY 45 - 50% CAF2)
  • SEPTEMBER, 1943 ESTIMATE. PRODUCTION SINCE THEN HAS REMOVED APPROXIMATELY THIS TONNAGE BUT OF LOWER GRADE (PROBABLY 45 - 50% CAF2).

Comments on the workings information

  • THE 27 VEIN CROPS OUT FOR A DISTANCE OF OVER 1200M. THE 27 - 3 TUNNEL IS 341 M. LONG, MUCH OF IT HAS A MINABLE WIDTH OVER 1.2 M. TUNNEL 27 - 2 IS LOCATED 137 M. NORTHEAST OF THE END OF 27 - 3 AND IS 73 M. LONG BY 0.75 TO 1.8 M. WIDE. 27 - 1 IS 260 M. NORTHEAST OF THE 27 - 2 PORTAL AND IS 158 M. LONG AND .6 M. WIDE FOR 55 M. OF THAT LENGTH. THE 21 VEIN CAN BE TRACED FOR ABOUT 975 M. AT THE SURFACE AND HAS A DRIFT 265 M. LONG AT THE 61 M. LEVEL, MOST OF WHICH IS 0.76 M. WIDE. IT HAS BEEN EXPLORED TO A DEPTH OF 116 M.

Comments on development

  • ECON.COM: ORE SHIPPED BY RAIL TO LOS LUNAS MILL ABOUT 100 KM EAST

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit THE STRONG FAULT MENTIONED IN SIGNIFICANT LOCAL STRUCTURES TRENDS N 40 - 80 DEG W AND DIPS STEEPLY. IT REARS A STRONG RESEMBLANCE TO THE BRECCIA REEF FAULTS OF THE COLORADO FRONT RANGE MINERAL BELT (LOVERING AND GODDARD, 1950, USGS PROF. PAPER 223) ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-75 Schruben, Paul G. U.S. Geological Survey
Updater 01-FEB-82 Menzie, David New Mexico Bureau of Mines and Mineral Resources

Beyond USGS

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

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