Johnny Miller Prospect

The Johnny Miller Prospect is a gold, silver, arsenic, and lead mine located in Sanders county, Montana at an elevation of 5,400 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: Johnny Miller Prospect
Secondary: Miller Property

Commodity

Primary: Gold
Primary: Silver
Primary: Arsenic
Primary: Lead
Secondary: Zinc

Location

State: Montana
County: Sanders
District: Swamp Creek 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: Montana Coeur D'Alene Co.

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1905
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Coeur D'Alene Mountains

Mineral Deposit Model

Not available

Orebody

Form: PODS, BLEBS

Structure

Type: R
Description: Nw Plunging Anticline (Swamp Creek) With Steep Overturned Beds.

Type: L
Description: Diabase Dike

Alterations

Not available

Rocks

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

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

Name: Diabase
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic

Name: Diabase
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic

Analytical Data

Analytical Data: DUMP SAMPLE ASSAYED 0.001 OZ/TON AU, 0.07 OZ/TON AG, 1.10 % PB & 0.825 % AS

Materials

Ore: Gold
Ore: Galena
Ore: Silver
Ore: Sphalerite
Gangue: Quartz
Gangue: Hematite
Gangue: Pyrite
Gangue: Chalcopyrite
Gangue: Siderite

Comments

Comment (Location): ALONG BANK OF WEST FORK OF SWAMP CREEK

Comment (Development): DEVELOPMENT WAS RENEWED IN 1961 , BUT MINE IS CURRENTLY INACTIVE.

Comment (Deposit): TWO NARROW QUARTZ VEINS ARE EXPOSED AT SURFACE AND CONTAIN ONLY A FEW SCATTERED GRAINS OF GALENA. SPECIMENS ON THE DUMP CONTAIN IRREGULAR BLEBS OF SIDERITE, PYRITE, ARSENOPYRITE, GALENA AND HEMATITE. IN GENERAL, PODS OF ORE ARE RARE.

Comment (Workings): DEVELOPMENT CONSISTS OF SEVERAL CAVED ADITS AND A FEW SHALLOW SHAFTS, ALL OF WHICH WERE INACCESSIBLE AS OF 1961 . SIZE OF DUMP INDICATES THERE WERE 800 - 1000 FT OF WORKINGS.

References

Reference (Deposit): WALLACE, R. E. AND HOSTERMAN, J. W., 1956 , RECONNAISANCE GEOLOGY OF WESTERN MINERAL COUNTY, MONTANA: US GEOLOGICAL SURVEY BULL. 1027-M, P. 608 .

Reference (Analytical Data): SRC.REF: CROWLEY, F. A., 1963: MONTANA BUREAU OF MINES AND GEOLOGY, BULL. 34

Reference (Deposit): CROWLEY, F. A., 1963 , MINES AND MINERAL DEPOSITS (EXCEPT FUELS) SANDERS COUNTY, MONTANA: MONTANA BUREAU OF MINES AND GEOLOGY BULL. 34 , PP. 18 - 19 .

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.