Maggie Murphy Group Prospect

The Maggie Murphy Group Prospect is a iron mine located in Albany 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

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Site Name

Primary: Maggie Murphy Group Prospect
Secondary: Maggie Murphy Group

Commodity

Primary: Iron
Secondary: Copper
Secondary: Graphite
Tertiary: Zinc

Location

State: Wyoming
County: Albany
District: Esterbrook Area

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.
Administrative Organization: Medicine Bow

Holdings

Not available

Workings

Type: Underground

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Underground
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

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

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Name: Granite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic

Name: Granite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic

Analytical Data

Not available

Materials

Ore: Sphalerite
Ore: Chalcopyrite
Ore: Hematite
Ore: Pyrrhotite
Ore: Marcasite
Gangue: Graphite
Gangue: Hornblende
Gangue: Limonite
Gangue: Mica
Gangue: Quartz
Gangue: Malachite

Comments

Comment (Deposit): "A 107 ft. shaft was sunk on the north side of Horseshoe Creek, in the east-central part of sec. 21, T28N, R71W. "Rusty schist" at the surface gave way to a heavy, shallow body of pyrrhotite. A northeast trending graphite-pyrrhotite schist 1 ft. to 2 ft. thick underlies the pyrrhotite mass with a little chalcopyrite. Hornblende and quartz were mixed with pyrrhotite. Traces of sphalerite also reported." (Bull. 50, p. 39).

Comment (Deposit): "A graphite-pyrrhotite schist was encountered at 107 ft. depth." (Bull. 50, p. 94).

Comment (Location): Maggie Murphy claim is listed in Bull. 50, p. 94 (under Graphite) as being in Albany County, east-central part of sec. 21, T28N, R71W. (Record was plotting in Converse county, but with corrected lat/longs it is now in Albany Co.)

Comment (Commodity): "pyrrhotite sometimes contains commercial quantities of nickel (Bull. 50, p. 119)."

Comment (Deposit): QTZ VEIN BEARING PYRRHOTITE CUTS RED GRANITE, MICA & SCHIST (from deleted record 10182091)

Comment (Commodity): Report of an AEC airborne RA anomaly in the vicinity (from deleted record MAS 0560010074 (10229431).

Comment (Geology): MICA AND HORNBLENDE SCHIST LAYERS IN GRANITE

Comment (Deposit): 5 FT VEIN OF PYRRHOTITE BENEATH OXIDIZED ZONE. ANOTHER SHAFT FOUND PYRRHOTITE MIXED WITH COARSE-GRAINED MARCASITE AND A LITTLE DISSEMINATED CHALCOPYRITE. AT 50 FT PYRRHOTITE BECAME QUARTZOSE. PYRRHOTITE PASSED OUT OF THE SHAFT AT 60 FT.

Comment (Location): NORTH SIDE OF HORSESHOE CREEK

Comment (Location): County is in question. Bull. 50 states that this is Albany Co, and only gives the SW4 of the entire township. Most of the SW4 is in Converse County. The shaft on the map that is presumed to be the Maggie Murphy is in Converse County.

References

Reference (Deposit): WILSON, W.H., 1966, MINERAL RESOURCES OF Wyoming, GEOL SURV WYO BULL. 50, p. 39, 94, 119.
Pages: p. 39, 94, 119.

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