Helmer

The Helmer is a uranium mine located in Crook county, Wyoming.

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

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.

Site Name

Primary: Helmer
Secondary: Helmer (Sec. 19)
Secondary: Anomaly 2
Secondary: C. Helmer Property

Commodity

Primary: Uranium

Location

State: Wyoming
County: Crook
District: Aladdin uranium mining district

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Cris Helmer
Info Year: 1955

Production

Not available

Deposit

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

Physiography

General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Black Hills

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Not available

Comments

Comment (Deposit): "This depoist is low in the Fall River formation and on the west flank of a small anticline. The host rock is a massive, gray-to-buff, fine-grained, limonite-stained sandstone containing abundant carbon. Carnotite type minerals are found as interstitial fillings and as coatings on sand grains. High radioactivity is found across a 6-foot thickness and extends for approximately 75 feet along the outcrop." [RME-1061, p. 9] "Another area of high radioactivity, several hundred feet southeast of this deposit, shows sparse uranium mineralization in a 2-foot thick sandstone bed of the Fall River formation" [RME-1061, p. 11].

Comment (Analytical Data): 1 channel, 5 chip samples [RME-1061, p. 11]: channel 0.10% U3O8, 0.28% V2O5, 2 chip samples: 0.07% U3O8, 0.15% V2O5 and 0.29% U3O8, 0.32% V2O5. 2 chip samples yielded just "trace" of both U and V, one chip sample had none of each.

Comment (General): Moved coordinates from SW4 of Sec. 19 to C of E edge to mines shown but not labeled on topo.

Comment (Geology): HIGH RADIOACT. ZONE 6 FT THICK.

Comment (Deposit): UP TO .29% U OXIDE and 0.32% V2O5.

References

Reference (Deposit): CONSV. DIV. COMP. DATE, 12-15-1961

Reference (Deposit): Nash, A.L., 1955, Airborne reconnaissance of eastern flank of the Black Hills, South Dakota, U.S. Atomic Energy Commission Report RME-1061, 16 p. [note that this publication is in the USGS library restricted section].
Pages: p. 9, 11, Anomaly 2.

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