Unnamed Ruthenium Occurrence

Occurrence in Saline county in Arkansas, United States with commodity Ruthenium

Geologic information

Identification information

Deposit ID 10048678
MRDS ID MP00293
Record type Site
Current site name Unnamed Ruthenium Occurrence

Geographic coordinates

Geographic coordinates: -92.71489, 34.77734 (WGS84)
Elevation 177
Location accuracy 100(meters)
Relative position NEAR PARON, Acc Utm Coordinates Are Very Approximate
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Geographic areas

Country State County
United States Arkansas Saline

Public Land Survey System information

Meridian Township Range Section Fraction State
5th Principal 016W 002N 33 CENTER OF N2 Arkansas

Comments on the location information

  • AT WEST END OF JENNINGS MOUNTAIN. LAT APPROXIMATED USING PHOTOCOPY OF PART OF 7.5-MINUTE QUADRANGLE TOPOGRAPHIC MAP SUPPLIED BY J.M. HOWARD, ARKANSAS GEOLOGICAL COMMISSION, ON WHICH LOCATION IS ACCRUATELY PLOTTED

Commodities

Commodity Importance
Ruthenium Primary

Comments on the commodity information

  • DISCOVERED BY DR. CHARLES MILTON AND ED DWORNIK THROUGH SCANNING ELECTRON MISCROSCOPY IN OCTOBER OF 1987

Materials information

Materials Type of material
Barite Gangue
Galena Gangue
Monazite Gangue
Pyrite Gangue
Quartz Gangue
Rutile Gangue
Sphalerite Gangue
Xenotime Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Porphyry > Lamprophyre
    Stratigraphic age (youngest) Mississippian
    Stratigraphic age (youngest) Mississippian
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Stanley Shale
    Rock description Stanley Shale

Nearby scientific data

(1) -92.71489, 34.77734

Ore body information

  • General form GRAINS WITHIN CONCRETION-LIKE STRUCTURES

Comments on the geologic information

  • PART OF UNIT WAS ORIGINALLY VOLCANIC ASH. LAMPROPHYRE IS A FEW HUNDRED METERS FROM MAIN SITE AND IS LOWER IN THE STANLEY SHALE.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1987
Discoverer Charles Milton And Ed Dwornik

Comments on the workings information

  • SAMPLE COLLECTION FOR SCIENTIFIC STUDY ONLY

Comments on development

  • RU OCCURRENCE HAS NO KNOWN ECONOMIC VALUE. IT WAS FOUND AS PART OF A SCIENTIFIC STUDY

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS MP00293

Bibliographic references

  • Deposit

    J. MICHAEL HOWARD, ARKANSAS GEOLOGICAL COMISSION, WRITTEN COMMUN., 1994

  • Deposit

    HOWARD, J.M., 1987, MINERAL SPECIES OF ARKANSAS, A DIGEST: ARKANSAS GEOLOGICAL COMMISSION, ADDENDA INSERT.

  • Deposit

    MILTON, CHARLES, STONE, C.G., AND DWORNIK, E.J., 1986, AN ENIGMATIC SILICEOUS ROCK FROM THE STANLEY SHALE, ARKANSAS: GEOLOGICAL SOCIETY OF AMERICA ABSTRACTS WITH PROGRAMS, V. 18, NO. 3, P. 255.

General comments

Subject category Comment text
Deposit OVOID CONCRETION-LIKE STRUCTURES 5-30 CM LONG IN SHALE ABOUT 20-35 M ABOVE BASE OF STANLEY SHALE ARE NEAR TOP OF HOT SPRINGS SANDSTONE MEMBER. ALTHOUGH STURCTURES RESEMBLE CORALS, NO DEFINITIVE BIOGENIC ORIGIN HAS BEEN ACCEPTED. GRAINS OF NATIVE RUTHENIUM WERE FOUND BY SEM EXAMINATION OF THESE CONCRETIONS
Deposit KNOWN OCCURRENCES OF NATIVE RUTHENIUM ARE EXTREMELY RARE ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-95 Peterson, Jocelyn A. U.S. Geological Survey