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Old Glory (main workings)

Past Producer in Alaska, United States with commodity Gold
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Mineral occurrence model information
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10308607
Record type Site
Current site name Old Glory (main workings)
Alternate or previous names Last Chance

Geographic coordinates

Geographic coordinates: -131.99979, 55.60774 (WGS84)
Relative position The Old Glory mine and adjacent Last Chance prospect are on the southwest foot of Gold Mountain at an elevation of 400-500 feet, and about 1.2 miles northwest of the mouth of Falls Creek. The site is in section 24, T. 72 S., R. 88 E., of the Copper River Meridian. It corresponds to locs. 254-2 to 254-28 and 255 in Maas and others (1995, fig. 46). The location is accurate within 0.1 mile. Also see Additional comments.

Site location context

Political divisions (FIPS codes)

Prince of Wales-Hyder(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ketchikan C-6(quadrangle 1:63,360 scale)

Ketchikan NW(quadrangle 1:100,000 scale)

Ketchikan(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Southern Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Tongass National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Bornite Ore
Chalcopyrite Ore
Pyrite Ore
Quartz Gangue

Alteration

  • The wallrocks adjacent to some of the veins are bleached and pyritic.

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Nearby scientific data

(1) -131.99979, 55.60774
ListMap

Economic information

Comments on the geologic information

  • 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).
  • Age = Late Cretaceous.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Mining district

District name Ketchikan

Comments on the production information

  • 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.

Comments on the workings information

  • 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.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Maas and others, 1995

General comments

Subject category Comment text
Deposit Model Name = Low-sulfide gold-quartz veins (Cox and Singer, 1986; model 36a)
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).

Reporter information

Type Date Name Affiliation Comment
Reporter 30-JUN-1999 H.C. Berg U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.