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Kentucky Derby Mine

Past Producer in Albany county in Wyoming, United States with commodities Copper, Gold, Silver, Platinum, Palladium, Osmium, Iridium
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Geologic information

Identification information

Deposit ID 10098382
MRDS ID M045449
MAS/MILS ID 560010152
Record type Site
Current site name Kentucky Derby Mine
Included sites Centennial Ridge District

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -106.17944, 41.28611 (WGS84)
Elevation 2835
Location accuracy 100(meters)
Relative position 2 MI SOUTHWEST OF CENTENNIAL, Adit labeled on pl. 1 of McCallum (1968, PR-7).
(click for info)

Geographic areas

Country State County
United States Wyoming Albany

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 015N 078W 8 NEAR CENTER OF N2 Wyoming

Commodities

Commodity Importance
Copper Primary
Gold Primary
Silver Primary
Platinum Secondary
Palladium Secondary
Osmium Secondary
Iridium Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Chrysocolla Ore
Gold Ore
Malachite Ore
Pyrite Ore
Limonite Gangue

Alteration

  • (Local) Mineralized Zone Has Been Oxidized

Analytical data

Result AU=TR, AG=0.69 PPM, IR=TR, PD=TR, OS=TR, PT=0.11 PPM. PT=3.5 PPM IN ROCK SAMPLE (ALL VALUES CONVERTED TO PPM FROM OZ/TON)

Host and associated rocks

  • Host or associated Host
    Rock type Tectonite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

Main Entrance (1) -106.17944, 41.28611
ListMap

Geologic structures

Type Description Terms
Local Shear Zones
Regional Mullen Creek-Nash Fork Shear Zone

Ore body information

  • General form VEINS

Controls for ore emplacement

  • Shears

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Centennial Ridge District

Land status

Ownership category National Forest

Comments on the production information

  • NO PRODUCTION FIGURES AVAILABLE; SMALL PRODUCTION PRESUMED

Comments on the workings information

  • SHORT CROSSCUTS

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M045449
U.S. Bureau of Mines Minerals Availability System MAS 560010152 = newMRDS 10229434, merged and deleted

Bibliographic references

  • Deposit

    MCCALLUM, M.E., 1968, THE CENTENNIAL RIDGE GOLD-PLATINUM DISTRICT, ALBANY COUNTY, WYOMING: GEOLOGICAL SURVEY OF WYOMING PRELIMINARY REPORT 7, P. 9, 10.

  • Deposit

    HAUSEL, 1980, GOLD DISTRICTS OF WYOMING: GEOLOGICAL SURVEY OF WYOMING REPORT OF INVESTIGATIONS 23, P. 36.

  • Deposit

    HAUSEL, W.D., 1989, THE GEOLOGY OF WYOMING'S PRECIOUS METAL LODE AND PLACER DEPOSITS: GEOLOGICAL SURVEY OF WYOMING BULLETIN 68, P. 99.

General comments

Subject category Comment text
Deposit ORE OCCURS IN SULFIDE-RICH ZONES; UNPUBLISHED MODEL NAME: NEW RAMBLER CU-AU-PGE.
Deposit "The Kentucky Derby workings are situated in the shear zone along upper Middle Fork near the waterfall which marks an abrupt change in stream flow direction. A short crosscut penetrates strongly shattered and sulphide enriched, dark, dense shear zone tectonites. The minerized zone has been appreciably oxidized and the sulphide masses are characteristically coated with films of limonite and alum. The platinum group metals osmium, palladium, iridium, and platinum along with gold have been reported from these ores (see Table 1). NRRI assays of grab samples collected from the adit show the presence of copper, gold, and silver, but no platinum group metals were recognized." (McCallum, 1968, p. 10)

Reporter information

Type Date Name Affiliation Comment
Reporter 1975-02-01 Blair, Will N. U.S. Geological Survey
Updater 1991-08-01 Peterson, Jocelyn A. U.S. Geological Survey
Editor 2011-08-04 Wilson, Anna B U.S. Geological Survey MAS 0560010152 = newMRDS 10229434, merged and deleted.
Reporter 1983-11-18 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines MAS 0560010152 = newMRDS 10229434