The Boundary Creek Occurrence is a molybdenum and silver mine located in Alaska.
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
Boundary Creek Occurrence MRDS details
Site Name
Primary: Boundary Creek Occurrence
Commodity
Primary: Molybdenum
Primary: Silver
Secondary: Copper
Location
State: Alaska
District: Juneau
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
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1967
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Analytical Data: USGS CIRC 615, P. 15, TABLE 2
Analytical Data: SAMPLE ACF 460,GRAB SAMPLE WITH VISIBLE MOLYBDENITE: 1000 PPM MO, 0.9 PPM AG, 7 PPM CU
Analytical Data: SAMPLE ACF 459, COMPOSITE CHIP SAMPLE OF IRON-STAINED ROCK WITH VISIBLE MOLYBDENITE: 1000 PPM MO, 9.6 PPM AG, 300 PPM CU
Materials
Ore: Molybdenite
Comments
Comment (Deposit): 100 FT WIDE ZONE OF INTENSELY IRON STAINED APLITE CONTAINING LOCALLY VISIBLE PYRITE AND MOLYBDENITE IS EXPOSED OVER 300 FT SLOPE DISTANCE; WITHIN A LARGE DIKELIKE BODY OF APLITE AND GRANODIORITE AT LEAST 2 MI LONG AND EXPOSED OVER A 2000 FT VERTICAL DISTANCE; SAMPLED AREA WITH VISIBLE MOLYBDENITE IS 6 FT WIDE, EXPOSED FOR VERTICAL DISTANCE OF 12 FT
Comment (Deposit): DATA ARE NOT ADEQUATE TO ASSESS ECONOMIC POTENTIAL; FURTHER STUDY WARRANTED ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Comment (Geology): COUNTRY ROCK IS METAMORPHIC TERRANE OF MESOZOIC (?) SCHISTOSE BIOTITE HORNFELS, HORNBLENDE HORNFELS, CALC-SILICATE HORNFELS AND MINOR MARBLE, FOLDED ABOUT N TO W TRENDING AXES AND CUT BY CRETACEOUS (?) TONALITIC INTRUSIVES AND A LARGE DIKE-LIKE BODY OF TERTIARY (?) APLITE AND ALTERED GRANODIORITE
Comment (Location): BEST LOCATION: USGS CIRC 615, P. 14, FIG. 10, SAMPLES ACF 459 AND ACF 460 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Development): DISCOVERED AUG. 5, 1967 DURING GEOLOGIC FIELD STUDIES OF THE JUNEAU ICEFIELD AREA CONDUCTED BY USGS PERSONNEL
References
Reference (Deposit): USGS CIRC 615, P. 12-15
Reference (Deposit): USGS OFR 85-717, P. 311, NO. T002
Reference (Other Database): BAG-OFR-85-717-T002
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