Mine detail: Hirst-Chichagof Gold Mine

Previously called 'Hirst-Chichagof Mining Co.-12 Patented Lode Claims'

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Location

Lat / long: 57.68471, -136.10593

Resource(M)

Primary: Gold
Secondary: Silver
Tertiary: Lead, Zinc, Copper
Ore: Chalcopyrite, Sphalerite
Gangue: Pyrite, Quartz
Orebody form: LENS, RIBBON
Discovery year: 1905

Production

Operation type: Unknown
Production size: Small
Development status: Producer
First production started: 1922
Last production ended: 1943

Geology

Host rock:Sitka Graywacke;
Host type:Siltstone
Structure:Hirst Fault Zone Trends N 28 Degrees W, Dips 72 Degrees Sw, Graywacke Bedding Strikes N 65 Degrees W, Dips 64 Degrees Sw
Tectonic:Chugach Terrain

References

MRDSA013265
DEP10002348
Reference{Deposit:: USGS B 929, P. 60, 65-71, 78-81, 101-118, PLATES 1, 3, 18, 19 (1941)}{Deposit:: USGS MF-1476-B, P. 5, 6, LOC. 14 (1982)}{Deposit:: USGS OF 78-450, P. 58-61 (1978)}{Deposit:: USGS MF-467, LOC. 27 (1972)}{Other Database:: BAG-B-929-PL-1}{Production:: D1-G9: USGS B 929, P. 104. G10-G12: USGS MF-1476-B, P. 5. G13: NORTHERN MINER, 1986, V. 72, NO. 1, P. 12}
ReporterLeonard, Kenneth R. (Huber, Donald F.), Waller, Nichelle (Mosier, Dan)