Lilly-Orphan Boy Group

The Lilly-Orphan Boy Group is a gold, silver, and lead mine located in Powell county, Montana at an elevation of 6,841 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

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: Lilly-Orphan Boy Group
Secondary: Lily-Orphan Boy Group
Secondary: Lily Mine
Secondary: Orphan Boy Mine
Secondary: Twin City Mine

Commodity

Primary: Gold
Primary: Silver
Primary: Lead
Secondary: Zinc
Secondary: Copper

Location

State: Montana
County: Powell
District: Elliston 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: Surface/Underground

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Method: 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

Alteration Type: L
Alteration Text: Quartz Monzonite Altered By Sericitization And Argillization, Hydrothermal

Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous

Analytical Data

Analytical Data: TWIN CITY MINE $3.60/TON AU, AG, CU, PB, PRE 1900.

Materials

Ore: Galena
Ore: Sphalerite
Ore: Gold
Gangue: Quartz
Gangue: Tourmaline
Gangue: Pyrite

Comments

Comment (Deposit): THE WORKINGS ARE SAID TO EXPLORE AN EAST TRENDING HIGH-ANGLE VEIN RANGING IN WIDTH FROM 4.0 TO 6.5 FEET

Comment (Location): 1.1 KM S OF NEWMANS CAMP. ; INFO FROM LAND.ST :(1954)

Comment (Workings): WORKINGS DESCRIBED AS HAVING MANY SURFACE PITS AND CUTS (NO DIMENSIONS GIVEN) AND A 180 FOOT VERTICAL SHAFT WITH THREE LEVELS. TWIN CITY MINE IS A SHAFT 85 FT DEEP AND A 21 FT CROSSCUT AT THE BOTTOM, ALL UNDERWATER.

References

Reference (Deposit): MBMG BULL 98, P. 13, 49.

Reference (Deposit): USGS BULL 842, P. 266

Reference (Deposit): USGS BULL 527, P. 78-79

Reference (Deposit): USGS BULL 1151, PL. 1.

Reference (Production): MBMG BULL 98, P. 49.

Principal Gold Districts of Montana

In Montana, 54 mining districts have each have produced more than 10,000 ounces of gold. The largest producers are Butte, Helena, Marysville, and Virginia City, each having produced more than one million ounces. Twenty seven other districts are each credited with between 100,000 and one million ounces of gold production. Read more: Principal Gold Districts of Montana.