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Black Gap

Past Producer in Maricopa county in Arizona, United States with commodities Strontium, 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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Land status
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10060160
MRDS ID TC10117
Record type Site
Current site name Black Gap
Alternate or previous names Montezuma Claims 1, 2, 3, 4, and 5, Gila Bend Celestite
Related records 10113396

Geographic coordinates

Geographic coordinates: -112.74324, 32.79065 (WGS84)
Elevation 323
Location accuracy 2000(meters)
Relative position 15 MILES S OF GILA BEND ON NW SLOPE OF SAUCEDA MTN. AND 3 MILES E OF BLACK ROCK SIDING., Estimated Location, +/- 1 Mi.

Site location context

Political divisions (FIPS codes)

Maricopa(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

South of Gila Bend(quadrangle 1:24,000 scale)

Gila Bend(quadrangle 1:100,000 scale)

Ajo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Gila-Painted Rock Reservoir(hydrologic unit)

Lower Gila-Agua Fria(hydrologic accounting unit)

Lower Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

USAF(Federal land areas administered by USAF)

Geographic areas

Country State County
United States Arizona Maricopa

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 007S 005W 26 Arizona

Comments on the location information

  • PHILLIPS (1987) SPLITS THE BLACK GAP AND MONTEZUMA DEPOSITS; IN AZ BUREAU OF MINES BULLETIN 180 THEY ARE TREATED AS ONE.

Commodities

Commodity Importance
Strontium Primary
Gypsum-Anhydrite Primary

Comments on the commodity information

  • UPPER 8-10 FT MOST PROMISING, THE REMAINDER APPEARS TO BE SANDY.

Materials information

Materials Type of material
Celestite Ore
Gypsum Ore
Strontianite Ore

Analytical data

Result PROBABLY LOW GRADE.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Conglomerate
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff

Nearby scientific data

(1) -112.74324, 32.79065
ListMap

Economic information

Ore body information

  • Strike N 5-20 E
    Dip 45-70 E
    Thickness 15.24M
    Length 1609.3M

Comments on the geologic information

  • VOLCANICS MAY HAVE BEEN STRONTIUM SOURCE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No

Land status

Ownership category Military Reservation
Area name Luke Air Force Range

Ownership information

  • Type Owner
    Owner W. D. Conrad And Lambert Frye Of Gila Bend In 1912.

Comments on the reserve resource information

  • BASED ON THE ASSUMPTION OF LENGTH OF 150 FT., A THICKNESS OF 2 FT., AND A DISTANCE OF 50 FT ON THE DIP. IF, AS IS PROBABLE, THE CELESTITE ZONE EXTENDS FARTHER ALONG THE STRIKE, THE ESTIMATE WOULD BE GREATLY INCREASED.

Comments on development

  • EXAMINED AS A SOURCE OF SR. WORKED IN WWI, BUT THEN ABANDONED.

Reference information

Bibliographic references

  • Deposit

    PHALEN, W.C., 1914, CELESTITE DEPOSITS IN CALIFORNIA AND ARIZONA, IN WHITE, DAVID, CONTRIBUTIONS TO ECONOMIC GEOLOGY: U.S. GEOLOGICAL SURVEY BULLETIN 540, P. 521-533.

  • Deposit

    CELESTITE OCCURS IN BEDS WITHIN THE TUFF AT SEVERAL HORIZONS AND MAY COVER 18,000 SQUARE KILOMETERS. THE PHILLIPS, K.A., 1987, ARIZONA INDUSTRIAL MINERALS: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES MINERAL REPORT 4, 185 P.

  • Deposit

    PEIRCE, H.W., 1990, ARIZONA GEOLOGICAL SURVEY INDUSTRIAL MINERAL FILES.

  • Deposit

    MOORE, B.N., 1936, CELESTITE AND STRONTIANITE, IN HEWETT, D.F., AND OTHERS, MINERAL RESOURCES OF THE REGION AROUND BOULDER DAM: U.S. GEOLOGICAL SURVEY BULLETIN 871, P. 151-162.

  • Deposit

    KEITH, S.B., 1969, GYPSUM AND ANHYDRITE: IN ABM BULLETIN 180, USGS BULLETIN 871, P. 378.

  • Deposit

    AIME TRANSACTIONS, V. 115 (1935), P. 365.

  • Other Database

    CIMRI

  • Reserve-Resource

    MOORE, 1936, P. 154.

General comments

Subject category Comment text
Deposit GYPSUM INTERBEDDED WITH CELESTITE IN 40-50 FT THICK MINERALIZED TUFFACEOUS HORIZON WITHIN SANDSTONES AND CONGLOMERATES. TOWARD THE NORTH, THE BEDS SWERVE TO THE NORTHWEST SLIGHTLY, AND THE STRIKE BECOMES N10-28W, WITH LOWER DIPS RANGING FROM 15-35 E. OUTCROP EXTENDS ABOUT 1 MI.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-89 Bolm, Karen S. U.S. Geological Survey
Updater 01-SEP-91 Carbonaro, Marguerite M. 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.