The Mill Creek Occurence is a beryllium mine located in Deer Lodge county, Montana at an elevation of 8,999 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
Elevation: 8,999 Feet (2,743 Meters)
Commodity: Beryllium
Lat, Long: 46.07861, -113.08889
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.
Mill Creek Occurence MRDS details
Site Name
Primary: Mill Creek Occurence
Commodity
Primary: Beryllium
Tertiary: Fluorine-Fluorite
Location
State: Montana
County: Deer Lodge
District: Anaconda Range Area
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Deposit Type: Contact Metasomatic
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
Not available
Alterations
Not available
Rocks
Name: Limestone
Role: Host
Age Type: Host Rock
Age Young: Late Cambrian
Analytical Data
Analytical Data: LARGEST ZONE: 0.074 AND 0.119 % BEO
Materials
Ore: Idocrase
Gangue: Fluorite
Gangue: Quartz
Gangue: Garnet
Gangue: Calcite
Comments
Comment (Deposit): THE STOCK IS 2.5 MI LONG AND 0.6 MI WIDE. THE CONTACT OF THE LIMESTONE AND GRANODIORITE EXTENDS FOR MORE THAN 2 MI ALONG THE S EDGE OF THE STOCK. THE LARGEST BERYLLIUM-BEARING ZONE OUTCROPS FOR 900 FT ACROSS A TRIBUTARY DRAW. A 50 FT WIDEAPLITE-PEGMATITE BODY OUTCROPS NEAR THE CENTER OF THE DRAW. THE ZONE IS 60-75% MASSIVE IDOCRASE AND 25-40% SCHIST. ANOTHER ZONE IS 800 FT DOWN THE SLOPE. IT STRIKES N85E AND DIPS 40 N. IT OUTCROPS FOR 147 FT AND AVERAGE THICKNESS IS 21 FT. THE IDOCRASE COMPRISES 50-70% OF THE ZONE. A FEW 100 FT W ON THE W SLOPE A THIRD BERYLLIUM-BEARING ZONE OCCURS. IT OUTCROPS FOR 250 E M110 FT. IT IS 30 FT THICK AND STRIKES N 82 E AND DIPS 61N. THE OUT CROP IS TERMINATED BY FOLD TO THE EAST. IT CONSISTS OF INTERCALATED BANDS OF MASSIVE IDOCRASE AND GNEISS. ANOTHER BERYLLIUM-BEARING ZONE OCCUR ABOUT 1 MI N AND 1 MI E.
Comment (Location): 7 MI SW FROM ANACONDA
References
Reference (Deposit): USBM R1 7148, P. 150-52
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.
