The Dolcoath Dike is a tin 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
Dolcoath Dike MRDS details
Site Name
Primary: Dolcoath Dike
Commodity
Primary: Tin
Secondary: Fluorine-Fluorite
Location
State: Alaska
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: Dike Offset By Major Fault To The W Of Mineralized Portion
Alterations
Alteration Type: L
Alteration Text: Dike Heavily Sericitized, Clay Altered And Limonite-Stained
Rocks
Not available
Analytical Data
Analytical Data: UP TO 1.15% SN REPORTED
Materials
Ore: Cassiterite
Gangue: Chlorite
Gangue: Danburite
Gangue: Topaz
Gangue: Pyrite
Gangue: Mica
Gangue: Tourmaline
Gangue: Quartz
Gangue: Labradorite
Unknown: Fluorite
Comments
Comment (Deposit): HIGHLY ALTERED, METALLIZED DIKE TRACED FOR ABOUT 7000 FT ALONG N SLOPE OF CASSITERITE CR.; MAINLY LABRADORITE AND QUARTZ IN FINE GRAINED MATRIX WITH TOURMALINE, MICA, DANBURITE, CHLORITE, PYRITE, ARSENOPYRITE, MICROCRYSTALLINE CASSITERITE AND TOPAZ; LIMESTONE WALL ROCK CONTACT METAMORPHOSED AND MINERALIZED WITH DANBURITE, FLUORITE, TOPAZ, ARSENOPYRITE, CASSITERITE AND TOURMALINE.
Comment (Workings): 100 FT "TUNNEL," 25 FT SHAFT; TUNNEL 1300 FT E OF SHAFT.
Comment (Location): SHORT SHAFT ON DALCOATH DIKE, USGS BULLETIN 733, P. 52, FIG. 5; USGS BULETIN 1129, PLATE 1. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Development): ACTIVE BEFORE 1918.
References
Reference (Deposit): USGS BULLETIN 358, P. 51-52.
Reference (Deposit): USGS BULLETIN 733, P. 76-78.
Reference (Deposit): USGS BULLETIN 1129, P. 55-56.
Reference (Other Database): BAG-MF-426-08
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