Llano Region

Occurrence in Llano county in Texas, United States with commodities Tungsten, Garnet
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10008874
MRDS ID D001356
Record type Site
Current site name Llano Region

Geographic coordinates

Geographic coordinates: -98.71701, 30.70021 (WGS84)

Site location context

Political divisions (FIPS codes)

Llano(county)

Texas(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Llano South(quadrangle 1:24,000 scale)

Llano(quadrangle 1:100,000 scale)

Llano(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Llano(hydrologic unit)

Middle Colorado-Llano(hydrologic accounting unit)

Lower Colorado-San Bernard Coastal(hydrologic subregion)

Texas-Gulf(hydrologic region)

Geographic areas

Country State County
United States Texas Llano

Commodities

Commodity Importance
Tungsten Critical Primary
Garnet Primary

Materials information

Materials Type of material
Epidote Ore
Garnet Ore
Scheelite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) -98.71701, 30.70021

Economic information

Comments on the geologic information

  • HR.AGE.MV: BETWEEN GNEISS AND LIMESTONE

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both
Significant No

Reference information

Bibliographic references

  • Deposit

    LEMMON, D.M., UNPUBLISHED DATA.

  • Deposit

    LEMMON, D.M., AND TWETO, O.L., 1962, TUNGSTEN IN THE U.S., USGS MAP, MR-25.

  • Deposit

    PAIGE, S., 1912, USGS GEOL. ATLAS, FOLIO 183.

  • Deposit

    BARNES, V.E., ET AL., 1942, TEXAS UNIV. BUR. ECON GEOL., MIN. RES. CIRC. 20.

General comments

Subject category Comment text
Deposit FIVE SAMPLES TAKEN BY THE U.S. BUREAU OF MINES FROM A DEPOSIT ON THE AUGUST OTTO RANCH (ABOUT 16 MI. WEST OF LLANO) ASSAYED LESS THAN 0.05 PERCENT OF WO3 AND ONE, 0.35 PERCENT. THREE SAMPLES TAKEN BY THE U.S. BUREAU OF MINES FROM A PROSPECT ON THE G.A. PARKINSON RANCH (6 MI. SOUTHWEST OF LLANO) CONTAINED LESS THAN 0.05 PERCENT OF WO3 AND ONE GRAB SAMPLE CONTAINED 1.05 PERCENT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Elliott, James E. U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 09-JUN-1995 Mosier, Dan U.S. Geological Survey

Beyond USGS

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