The Hirst-Chichagof Mine is a gold 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
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.
Hirst-Chichagof Mine MRDS details
Site Name
Primary: Hirst-Chichagof Mine
Secondary: Hirst
Secondary: Bahrt
Commodity
Primary: Gold
Primary: Silver
Secondary: Lead
Tertiary: Zinc
Tertiary: Copper
Tertiary: Arsenic
Location
State: Alaska
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Not available
Production
Year: 1938
Time Period: 1922-1938
Material type: AU
Description: Cp_Grade: ^1.3 Oz Au/Ton (Average 1938)
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Year First Production: 1922
Year Last Production: 1943
Discovery Year: 1905
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Form: TABULAR
Structure
Type: L
Description: Hirst Fault Localizes Ore Shoots
Alterations
Alteration Type: L
Alteration Text: Porphyry Dike Alogn Footwall Is Altered
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Gold
Ore: Galena
Ore: Sphalerite
Gangue: Calcite
Gangue: Quartz
Comments
Comment (Location): 1 1/2 MILES FROM CHICHAGOFF MINE LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Deposit): SIMILAR TO CHICHAGOFF. ORE RUNS LESS THAN 1% SULFIDES. DEPOSITS ARE QUARTZ BODIES UP TO 10 FT THICK IN HIRST FAULT & IN SPLITS FROM IT. SHOOTS LOCALIZED ALONG INTERSECTIONS OF FAULTS & BEDDING PLANES AND IN WARP IN MAIN FAULT.
Comment (Workings): SEVERAL THOUSAND FT OF WORKINGS ON AT LEAST 12 LEVELS.
References
Reference (Deposit): USGS OFR 78-450, P. 58-61
Reference (Deposit): USGS B 929, P. 78-81, 101-118
Reference (Production): USGS B929
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.
