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

Roberts Prospect

Occurrence in Llano county in Texas, United States with commodity Arsenic
Map
XML
JSON
KML
C
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Host and associated rocks
  7. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Land status
  10. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10065145
MRDS ID TC40176
Record type Site
Current site name Roberts Prospect
Alternate or previous names Boyd, San Saba, Honey Creek Cove

Geographic coordinates

Geographic coordinates: -98.55727, 30.61965 (WGS84)
Elevation 360
Location accuracy 500(meters)
Relative position 11 MI S35E OF LLANO, Est, Within 15 Secs, Est, Within 15 Secs

Site location context

Political divisions (FIPS codes)

Llano(county)

Texas(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Click(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

Comments on the location information

  • 50 FT WEST OF RILEY MOUNTAIN FAULT

Commodities

Commodity Importance
Arsenic Critical Primary

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Honeycut Formation
    Rock description Honeycut Formation
    Stratigraphic age (youngest) Early Ordovician
    Stratigraphic age (youngest) Early Ordovician

Nearby scientific data

(1) -98.55727, 30.61965
ListMap

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1756
Discoverer Bernardo De Miranda

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Roberts

Comments on the production information

  • INACTIVE OCCURRENCE

Comments on the workings information

  • OPEN PIT

Comments on development

  • THE DISCOVERY OF ARSENOPYRITE AT THIS LOCALITY BY EARLY SPANISH COLONISTS HAS GIVEN RISE TO MANY UNFOUNDED LEGENDS OF THE LOST SAN SABA SILVER MINE. WERE UNDER EXPLORATION IN 1909.

Reference information

Bibliographic references

  • Deposit

    UTEX PUB 3401, V. 2, P. 402-403.

  • Deposit

    PAIGE, S., 1912, GEOLOGIC ATLAS OF THE UNITED STATES, LLANO-BURNET FOLIO, TEXAS: USGS FOLIO 183, 12 P.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit GOSSAN 20 FT DEEP AND AT LEAST 25 FT LONG AND 15 FT WIDE UNDERLAIN BY ARSENOPYRITE WHICH APPEARS TO REPLACE LIMESTONE ALONG PREFERRED BEDS DIPPING TO WEST AWAY FROM RILEY MOUNTAIN FAULT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-94 Long, Keith R. 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