Potratz Prospect

The Potratz Prospect is a gold, silver, and copper mine located in Lewis and Clark county, Montana.

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: Potratz Prospect  

State:  Montana

County:  Lewis and Clark

Elevation:

Primary Mineral: Gold, Silver, Copper

Lat, Long: 46.71111, -112.48333

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 Potratz Prospect

Potratz Prospect MRDS details

Site Name

Primary: Potratz Prospect


Commodity

Primary: Gold
Primary: Silver
Primary: Copper
Tertiary: Molybdenum
Tertiary: Tungsten


Location

State: Montana
County: Lewis and Clark
District: Ophir District


Land Status

Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.


Holdings

Not available


Workings

Type: Underground


Ownership

Owner Name: Guy Potratz
Home Office: Avon, Mt.


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

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


Mineral Deposit Model

Not available


Orebody

Not available


Structure

Type: R
Description: Boulder Batholith


Alterations

Not available


Rocks

Name: Limestone
Role: Host
Age Type: Host Rock
Age Young: Late Permian


Analytical Data

Not available


Materials

Ore: Chalcopyrite
Ore: Gold
Ore: Silver
Ore: Scheelite
Gangue: Quartz
Gangue: Magnetite


Comments

Comment (Location): COUNTY NAME CHANGED FROM POWELL TO LEWIS AND CLARK 11/91 BY D.F. SPOKANE MIO. SECTION 16 IS IN LEWIS AND CLARK COUNTY. ALL REFERENCES LOCATE PROPERTY IN SECTION 16 OF T 11 N, R 7 W. USBM - RI-6334 AND MBMG BULLETIN 98 BOTH HAVE SECTION 16 AS LOCATION BUT SAY POWELL COUNTY. ; INFO FROM LAND.ST :(1959)

Comment (Production): ITEM 1: ONLY $1000.

Comment (Deposit): HIGH GARNET-TACTITE ZONE OCCURS ALONG A LIMESTONE-DIORITE CONTACT. SCATTERED SMALL CRYSTALS OF SCHEELITE AND POWLLITE OCCUR ALONG CONTACT.

Comment (Workings): ADIT, SHAFT (CAVED), 12 AND 38 FT SHAFTS, 2 20FT INCLINES


References

Reference (Production): WALKER, 1963, USBM REP. INVES. 6334

Reference (Deposit): USBM RI 6334, P. 6, 50, 51