The Old Glory (main workings) is a 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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Old Glory (main workings) MRDS details
Site Name
Primary: Old Glory (main workings)
Secondary: Last Chance
Commodity
Primary: Gold
Location
State: Alaska
District: Ketchikan
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Low-sulfide Au-quartz vein
Orebody
Not available
Structure
Not available
Alterations
Alteration Text: The wallrocks adjacent to some of the veins are bleached and pyritic.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Bornite
Ore: Chalcopyrite
Ore: Pyrite
Gangue: Quartz
Comments
Comment (Deposit): Other Comments = The locations of the Old Glory and Last Chance sites in Elliott and others (1978, locs. 34 and 35) have been revised in this report to agree with the locations of the sites in Maas and others (1995, figs. 46 and 48).
Comment (Production): Production Notes = Maas and others (1995, table 26) report production of 0.3 kg Au and 0.8 kg Ag from the Old Glory mine.
Comment (Deposit): Model Name = Low-sulfide gold-quartz veins (Cox and Singer, 1986; model 36a)
Comment (Reference): Primary Reference = Maas and others, 1995
Comment (Geology): Age = Late Cretaceous.
Comment (Workings): Workings / Exploration = The Old Glory mine was developed in the early 1900s by underground workings totalling about 2800 feet; the Last Chance prospect was explored by two adits, one 21 feet long and one 93 feet long (Maas and others, 1995, table 26). Maas and others (1995, table 25) report the following average metal contents in their samples from the main workings of the Old Glory mine: 2.29 ppm Au, 0.30 ppm Ag, 143 ppm Cu, 14.0 ppm Pb, and 83 ppm Zn. Samples from the Last Chance prospect contain: 6.73 ppm Au, 1.26 ppm Ag, 1338 ppm Cu, 13.5 ppm PB, and 43 ppm Zn. The high copper content in the Last Chance deposit supports the early reports of copper minerals in the veins there. Maas and others (1995, table 24) also compare average gold values of the quartz veins with those of the pyritic schist at the Old Glory mine. Their results show 1.7 ppm Au in the quartz and 17.6 ppm Au in the altered schist next to the veins.
Comment (Geology): Geologic Description = The country rocks near this site are andesitic and basaltic metavolcanic rocks that gradationally intertongue with subordinate flyschlike metasedimentary rocks (Berg and others, 1988, p. 17-19). The strata were regionally metamorphosed to greenschist-grade phyllite and semischist in Late Cretaceous time (Brew, 1996, p. 27). Their premetamorphic age is uncertain. Berg and others (1988, p. 17) state that they closely resemble Upper Jurassic to mid-Cretaceous marine flysch and volcanic rocks nearby on Gravina Island. The Old Glory and Last Chance deposits consist of quartz fissure veins and stringer lodes in massive to schistose metavolcanic rocks (greenstone) (Maas and others, 1995, p. 183-184). Brooks (1902, p. 57) described two systems of quartz veins on the Last Chance claim: one strikes N-S, parallel to the foliation of the schist; the other strikes N60E. The veins contain pyrite and free gold, and the schistose country rocks adjacent to some of the veins are bleached and pyritic for a distance of up to 4.5 feet from the veins. Brooks also reported small amounts of chalcopyrite and bornite in the Last Chance veins, in addition to the pyrite and gold. The Old Glory mine was developed in the early 1900s by underground workings totalling about 2800 feet; the Last Chance prospect was explored by two adits, one 21 feet long and one 93 feet long (Maas and others, 1995, table 26). Maas and others (1995, table 25) report the following average metal contents in their samples from the main workings of the Old Glory mine: 2.29 ppm Au, 0.30 ppm Ag, 143 ppm Cu, 14.0 ppm Pb, and 83 ppm Zn. Samples from the Last Chance prospect contain: 6.73 ppm Au, 1.26 ppm Ag, 1338 ppm Cu, 13.5 ppm PB, and 43 ppm Zn. The high copper content in the Last Chance deposit supports the early reports of copper minerals in the veins there. Maas and others (1995, table 24) also compare average gold values of the quartz veins with those of the pyritic schist at the Old Glory mine. Their results show 1.7 ppm Au in the quartz and 17.6 ppm Au in the altered schist next to the veins. Fluid inclusion studies of quartz vein material from several of the Helm Bay lodes suggest that the veins formed at temperatures and pressures consistent with conditions during the Late Cretaceous greenschist-grade regional metamorphism (Maas and others, 1995, p. 184).
References
Reference (Deposit): Elliott, R.L., Berg, H.C., and Karl, Susan, 1978, map and table describing metalliferous and selected nonmetalliferous mineral deposits, Ketchikan and Prince Rupert quadrangles, Alaska: U.S. Geological Survey Open-file Report, 78-73-B,17 p., scale 1:250,000.
Reference (Deposit): Berg, H.C., Elliott, R.L., and Koch, R.D., 1988, Geologic map of the Ketchikan and Prince Rupert quadrangles, southeastern Alaska: U.S. Geological Survey Mineral Investigations Series Map MF-1807,27 p., scale 1:250,000.
Reference (Deposit): Maas, K.M., Bittenbender, P E., and Still, J.C., 1995, Mineral investigations in the Ketchikan mining district, southeastern Alaska: U.S. Bureau of Mines Open-File Report 11-95, 606 p.
Reference (Deposit): Brooks, A.H., 1902, Preliminary report on the Ketchikan mining district, Alaska, with an introductory sketch of the geology of southeastern Alaska: U.S. Geological Survey Professional Paper 1, 120 p.
Reference (Deposit): Brew, D.A., 1996, Geologic map of the Craig, Dixon Entrance, and parts of the Ketchikan and Prince Rupert quadrangles, southeastern Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2319, 53 p., 1 sheet, scale 1:250,000.
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