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  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Coal Creek Area

Occurrence in Gillespie county in Texas, United States with commodity Talc-Soapstone
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Mineral occurrence model 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. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10065112
MRDS ID TC40134
Record type Site
Current site name Coal Creek Area

Geographic coordinates

Geographic coordinates: -98.59755, 30.49743 (WGS84)
Elevation 366
Relative position 3.7 MI N15W OF BLOWOUT.

Site location context

Political divisions (FIPS codes)

Gillespie(county)

Texas(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Blowout(quadrangle 1:24,000 scale)

Pedernales River(quadrangle 1:100,000 scale)

Llano(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Buchanan-Lyndon B. Johnson Lakes(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 Gillespie
United States Texas Llano

Comments on the location information

  • JOHN QUIRK SURVEY.

Commodities

Commodity Importance
Talc-Soapstone Primary

Materials information

Materials Type of material
Talc Ore
Chlorite Gangue
Magnetite Gangue

Mineral occurrence model information

Model code 20
USGS model code 8f
Deposit model name Ultramafic hosted magnesite

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Big Branch Gneiss
    Rock description Big Branch Gneiss
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Mesoproterozoic
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Packsaddle Schist
    Rock description Packsaddle Schist

Nearby scientific data

(1) -98.59755, 30.49743
ListMap

Economic information

Ore body information

  • General form LENSE

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic
Significant No

Land status

Ownership category Private

Reference information

Bibliographic references

  • Deposit

    BARNES, V.E., 1945, SOAPSTONE AND SERPENTINE IN THE CENTRAL MINERAL REGION OF TEXAS, IN TEXAS MINERAL RESOURCES: UNIVERSITY OF TEXAS PUBLICATION 4301, P. 55-91

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit TALC LENSES IN SCHIST ALONG CONTACT WITH SERPENTINITE AND AS XENOLITHS IN GNEISS. OTHER LENSES IN SCHIST APPEAR TO BE ALTERED BASIC DIKES AND SILLS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1994 Long, Keith R. U.S. Geological Survey

Beyond USGS

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

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