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Pacific Mine

Past Producer in Utah county in Utah, United States with commodities Lead, Silver, Gold, Copper, Zinc, 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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10097932
MRDS ID D011972
Record type Site
Current site name Pacific Mine
Alternate or previous names Pacific Gold Mining and Milling Co., Blue Rock Mine

Geographic coordinates

Geographic coordinates: -111.59467, 40.54133 (WGS84)
Elevation 2377
Relative position 7350 FT S 80 E FROM MILLER HILL

Site location context

Political divisions (FIPS codes)

Utah(county)

Utah(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Brighton(quadrangle 1:24,000 scale)

Salt Lake City(quadrangle 1:100,000 scale)

Salt Lake City(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Utah Lake(hydrologic unit)

Jordan(hydrologic accounting unit)

Great Salt Lake(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Uinta-Wasatch-Cache 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 Utah Utah

Public Land Survey System information

Meridian Township Range Section Fraction State
Salt Lake 003S 003E 15 SW OF NW OF SE Utah

Comments on the location information

  • UTM COORDINATES GIVEN FOR CARD ARE FOR THE LOWER TUNNEL. UTM COORDINATES OF OTHER OPENINGS ARE AS FOLLOWS: LOWER BLUE ROCK TUNNEL-4487920 N, 449550 E, UPPER BLUE ROCK TUNNEL - 4487930 N, 449450 E. ; INFO FROM LAND.ST :1983

Commodities

Commodity Importance
Lead Primary
Silver Primary
Gold Secondary
Copper Secondary
Zinc Critical Secondary
Barium-Barite Critical Tertiary

Materials information

Materials Type of material
Galena Ore
Gold Ore
Sphalerite Ore
Tetrahedrite Ore
Quartz Gangue
Barite Unknown

Alteration

  • (Local) Oxidation

Analytical data

Result EARLY ORE AVERAGED 30 OZ/TON AG AND 15% PB

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Tintic Quartzite;Ophir Shale
    Rock description Tintic Quartzite;Ophir Shale
    Stratigraphic age (youngest) Late Cambrian
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale

Nearby scientific data

(1) -111.59467, 40.54133
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Uinta-Cottonwood Arch, Cordilleran Hingeline, Sevier Overthrust Belt
Type of structure Local
Structure description Mountain Dell Fault And Numerous Local Splays

Ore body information

  • General form TABULAR
    Dip 50 NW
    Length 365.76M
    Depth to top 0M

Controls for ore emplacement

  • Northeast Striking Faults

Comments on the geologic information

  • HOST FOR ORE IS HIGHLY SHATTERED QUARTZITE AND SHALE ON A SHALLOWLY DIPPING, NORTHEAST STRIKING SPLAY OF THE MOUNTAIN DELL FAULT. HOSTING FAULT DIPS 50 TO 60 DEGREES TO THE NORTHWEST.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Discovery year 1900
Year of first production 1905
Year of last production 1936

Mining district

District name American Fork District

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner East Utah Mining Co.
    Home office Reno, Nv.

Comments on the production information

  • NO ESTIMATES OF TONNAGE OF PRODUCTION COULD BE FOUND. EARLY GRADES WERE 30 OZ/TON AG AND 15% PB. PRODUCTION BETWEEN 1916 AND 1918 BY FISSURES EXPLORATION CO., WHO LEASED THE MINE, RESULTED IN A LEAD CONCENTRATE CONTAINING 55 CENTS/TON AU, 14.9 OZ/TON AG, AND 30.1% PB. ZINC, 2.15%, WAS NOT RECOVERED. ANOTHER ESTIMATE OF AVERAGE CONCENTRATE GRADES WAS 17 CENTS PER TON AU, 15.88 OZ/TON AG, 34.99% PB, AND .34% CU.

Workings at the site

  • Type of workings Underground
    Length 568.76M

Comments on the workings information

  • THREE ADITS AND TWO PROSPECT PITS SHOWN ON MAP. WORKINGS CONSIST OF INTERCONNECTED ADITS, SHAFTS AND RAISES WHICH FOLLOWED THE PACIFIC FISSURE ON SEVERAL LEVELS OVER A STRIKE LENGTH OF 1200 FT.

Comments on development

  • FAIRLY CONSTANT DEVELOPMENT FROM 1905 UNTIL 1918. INTERMITTENT ACTIVITY FROM 1918 TO 1936 BY LEASEES

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit DEPOSIT WAS A PERSISTONT FISSURE VEIN CALLED THE PACIFIC VEIN. MINERALIZATION WITHIN THE VEIN WAS IN SMALL SHOOTS AND LENTICULAR PODS. WIDTH OF VEIN CONTROLLED BY WIDTH OF SHATTERED ZONE OF QUARTZITE NEXT TO FAULT
Deposit Discovery Year: NEAR 1900

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1984 Shubat, Michael A. Utah Geological and Mineral Survey

Beyond USGS

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

External references

Maps centered on this site