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  3. Mineral Resource Data System (MRDS)

Fortuna Mine Area

Occurrence in Yuma county in Arizona, United States with commodities Mica, Kaolin, Gypsum-Anhydrite
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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. Ore body information
  12. Economic information about the deposit and operations
  13. Land status
  14. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10060247
MRDS ID TC10230
Record type Site
Current site name Fortuna Mine Area
Alternate or previous names Gila Mountains Mica
Related records 10283853

Geographic coordinates

Geographic coordinates: -114.31606, 32.55565 (WGS84)
Relative position 2.25 MI E OF THE FORTUNA MINE.

Site location context

Political divisions (FIPS codes)

Yuma(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Fortuna Mine(quadrangle 1:24,000 scale)

Yuma(quadrangle 1:100,000 scale)

El Centro(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Yuma Desert(hydrologic unit)

Lower Colorado(hydrologic accounting unit)

Lower Colorado(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

USAF(Federal land areas administered by USAF)

Geographic areas

Country State County
United States Arizona Yuma

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 010S 020W 15 Arizona

Comments on the location information

  • PHILLIPS REPORTS LOCATION AS SEC. 23, T10S, R20W.

Commodities

Commodity Importance
Mica Primary
Kaolin Tertiary
Gypsum-Anhydrite Tertiary

Comments on the commodity information

  • THIN BOOKS OF MUSCOVITE PLATES UP TO 3 IN ACROSS. MICA IN DECOMPOSED PORTION OF VEIN EASILY CONCENTRATED BY WASHING. THE MICA IS RULED AND PLICATED, PROBABLY COULD ONLY BE USED FOR GRINDING. FLAKY MUSCOVITE AND COARSE GRAINED SERICITE.

Materials information

Materials Type of material
Muscovite Ore
Sericite Ore
Gypsum Gangue
Kaolin Gangue

Alteration

  • (Local) Schist Shows Intense Alteration To Coarse-Grained Sericite And, For Up To 150 Ft On Each Side, Is Marked By Brown And Yellow Limonitic Stain.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Paleocene
  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -114.31606, 32.55565
ListMap

Economic information

Ore body information

  • General form DIKE

Comments on the geologic information

  • GRANITIC INTRUSIONS ARE SMALL.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic
Deposit size Small
Significant No

Land status

Ownership category Military Reservation

Ownership information

  • Type Owner
    Owner Claims Held By S. E. Montgomery In 1933

Comments on the workings information

  • A FEW CUTS AND SHORT TUNNELS IN 1929.

Reference information

Bibliographic references

  • Deposit

    PHILLIPS, K.A., 1987, ARIZONA INDUSTRIAL MINERALS: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES MINERAL REPORT 4, 185 P.

  • Deposit

    USGS, AZ BUREAU OF MINES, AND U.S. BUREAU OF RECLAMATION, 1969, MINERAL AND WATER RESOURCES OF ARIZONA: ARIZONA BUREAU OF MINES BULLETIN 180, 638 P.

  • Deposit

    WILSON, E.D., 1933, GEOLOGY AND MINERAL DEPOSITS OF SOUTHERN YUMA COUNTY, ARIZONA: ARIZONA BUREAU OF MINES BULLETIN 134, 236 P.

  • Deposit

    PEIRCE, H.W., 1990, ARIZONA GEOLOGICAL SURVEY INDUSTRIAL MINERALS CARD FILE.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit IRREGULAR DECOMPOSED PEGMATITE DIKE THAT FOLLOWS FAULT ZONE FOR 1.5 MI WSW FROM DIVIDE 2.25 MI EAST OF FORTUNA MINE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1990 Bolm, Karen S. U.S. Geological Survey
Updater 01-DEC-1992 Orris, Greta J. U.S. Geological Survey

Beyond USGS

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

Maps centered on this site

Authoritative Arizona resources

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