The Annex Number 1 is a silver and gold 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
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Annex Number 1 MRDS details
Site Name
Primary: Annex Number 1
Commodity
Primary: Silver
Primary: Gold
Secondary: Tin
Secondary: Zinc
Location
State: Alaska
District: Juneau (Skagway subdistrict)
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Polymetallic veins
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Based on similarity to the Golden Eagle (SK047) and other prospects in the area, the tan to gray altered dikes are probably mafic dikes that have been altered to silica-carbonate rock.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Pyrite
Gangue: Quartz
Comments
Comment (Exploration): Status = Probably inactive
Comment (Workings): Workings / Exploration = This prospect was discovered by Jerry Fabrizio, a local prospector, in 1983 (Still and others, 1991).
Comment (Reference): Primary Reference = Still and others, 1991
Comment (Deposit): Model Name = There is little information, but the brief description by Still and others (1991) mentions polymetallic veins in dikes (Cox and Singer, 1986; model 22c).
Comment (Geology): Geologic Description = The following description is from Still and others (1991). Pyrite-bearing quartz veins are associated with tan to gray altered dikes. Samples of narrow, discontinuous veins in the margins of dikes and in slate contain from 0.2 to 114.1 ppm gold. Samples of dike and slate contain from 0.005 ppm to 0.315 ppm gold. Selected high-grade (vein?) samples also contain up to 9 ppm silver, 840 ppm zinc, 100 ppm tin, and 0.8% arsenic. These quartz-sulfide veins occur within the northwest-trending zone of quartz-sulfide veining in sediments and slates in the Skagway B-4 quadrangle that is described by Wright (1904 [B 225 and B 236], Eakin (1918 and 1919), and MacKevett and others (1974). Other similar occurrences in the area include the McKinley Falls (SK046) and Golden Eagle (SK047) prospects, and the unnamed zone of veining near the mouth of Cahoon Creek (SK042). This prospect may be within the zone of veining referred to in SK042.
Comment (Geology): Age = Unknown, but probably Cretaceous or younger based on age of intrusives in area (MacKevett and others, 1974).
References
Reference (Deposit): Still, J.C., Hoekzema, R.B., Bundtzen, T.K., Gilbert, W.G., Wier, K.R., Burns, L.E., and Fechner, S.A., 1991, Economic geology of Haines-Klukwan-Porcupine area, southeastern Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 91-4, 156 p., 5 sheets, scale 1:63,360.
Reference (Deposit): Gilbert, W.G., and Redman, E.C., 1989, Lode deposits, prospects, and occurrences of the Porcupine mining area, southeast Alaska: U.S. Bureau of Mines Open-File Report 17-89, 1 sheet, scale 1:39,600.
Reference (Deposit): MacKevett, E.M., Jr., Robertson, E.C., and Winkler, G.R., 1974, Geology of the Skagway B-3 and B-4 quadrangles, southern Alaska: U.S. Geological Survey Professional Paper 832, 33 p.
Reference (Deposit): Eakin, H.M., 1919, The Porcupine gold placer district, Alaska: U.S. Geological Survey Bulletin 699, 29 p.
Reference (Deposit): Wright, C.W., 1904, The Porcupine district, Alaska: U.S. Geological Survey Bulletin 236, 35 p.
Reference (Deposit): Wright, C.W., 1904, The Porcupine placer mining district, Alaska in Emmons, S.F., and Hayes, C.W., eds., Contributions to economic geology 1903: U.S. Geological Survey Bulletin 225, p.60-63.
Reference (Deposit): Eakin, H.M., 1918, Gold placer mining in the Porcupine district: U.S. Geological Survey Bulletin 662-B, p. 93-100.
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