May and Jump Claims

The May and Jump Claims is a copper, gold, and silver mine located in Fremont county, Wyoming at an elevation of 8,599 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Name: May and Jump Claims  

State:  Wyoming

County:  Fremont

Elevation: 8,599 Feet (2,621 Meters)

Commodity: Copper, Gold, Silver

Lat, Long: 42.53333, -108.70833

Map: View on Google Maps

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Satelite image of the May and Jump Claims

May and Jump Claims MRDS details

Site Name

Primary: May and Jump Claims


Primary: Copper
Primary: Gold
Primary: Silver


State: Wyoming
County: Fremont
District: South Pass

Land Status

Not available


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Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Significant: N


General Physiographic Area: Rocky Mountain System
Physiographic Province: Middle Rocky Mountains

Mineral Deposit Model

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Name: Gabbro
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic

Analytical Data

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Comment (Identification): Unclear if this is the same as May Gold Placer Claims (owned as of the mid 1980s by Nugget Exploration Inc.). This property is NOT mentioned in either of the supposed references (GQ-460 or Bull. 50).

Comment (General): Atlantic City-South Pass "district" contains both gold vein and gold placer deposits. Presumably, May and Jump claims are placers. However, there is no mention of either claim in the cited references. A proprietary subscription to Metals Economics Group ( lists a "deposit" called the "May Gold Placer Claims." There is no proof that this is the same deposit, but for further information, the user may wish to pursue this possible lead.


Reference (Deposit): WYO GEOL SURVEY BULL 50 [note: ABW was unable to locate mention of this mine/claim in this publication].

Reference (Deposit): Bayley, Richard W., 1965, Geologic map of the Miners Delight quadrangle, Fremont County, Wyoming: USGS Geologic Quadrangle Map GQ-460, scale 1:24,000.

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