The Sumdum Prospect is a copper and zinc 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
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.
Sumdum Prospect MRDS details
Site Name
Primary: Sumdum Prospect
Commodity
Primary: Copper
Primary: Zinc
Secondary: Silver
Secondary: Lead
Location
State: Alaska
District: Petersburg 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
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1958
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: M
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Form: TABULAR, LENTICULAR
Structure
Type: R
Description: Regional Nw-Trending Foliation
Type: L
Description: Isoclinal Folds Overturned To Sw, Numerous Minor Folds On Limbs Of Larger Folds
Alterations
Alteration Type: L
Alteration Text: Secondary Iron Minerals
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Sphalerite
Ore: Galena
Ore: Bornite
Ore: Malachite
Ore: Chalcopyrite
Ore: Chalcocite
Gangue: Albite
Gangue: Calcite
Gangue: Pyrrhotite
Gangue: Barite
Gangue: Quartz
Gangue: Pyrite
Comments
Comment (Location): ADJACENT TO (& BENEATH ?) SUMDUM GLACIER LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Development): EXPLORED BY DIAMOND DRILLING & TRENCHING
Comment (Workings): DIAMOND DRILLING & SURFACE EXPLORATION ONLY
Comment (Geology): PROTOLITH AGE OF MET ROCKS MAY BE AS OLD AS PALEOZOIC. METAMORPHISM MAY BE AS YOUNG AS EARLY TERTIARY.
Comment (Deposit): TABULAR ORE BODIES ARE PARALLEL OR SUBPARALLEL TO FOLIATION IN HIGHLY FOLDED METAMORPHIC ROCKS, ORE SOMEWHAT LOCALIZED BY FOLDS & FAULTS. SNOW & GLACIER COVER CONCEALS MUCH OF DEPOSIT.
References
Reference (Deposit): USGS B 1108-E, P. E1-E31
Reference (Deposit): USGS OFR 78-698, P. 28-29
Reference (Deposit): USGS OFR 77-649, P. 4, 128-129, 205-212, 258-259
Reference (Reserve-Resource): USGS OFR 77-649
The Top Ten Gold Producing States
These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.
