|Photo by David Miller from Riverton|
|The GemHunter talks to group at South Pass.|
The GemHunter to the right looks at camera while his field trip attendees
listen to a history lecture at South Pass city.
|Welcome to Atlantic City (photo by Sharon Hall).|
Oregon Buttes seen in the distance from South Pass. This area includes a giant gold paleoplacer and reworked
placers. The paleoplacer (the ridge in the lighted area in the background below Oregon Buttes) was suggested by the US
Geological Survey to host upwards to 28.5 million ounces of gold, making it one of the largest undeveloped gold deposits
in North America, about three-quarters the size of the giant Donlin Creek Alaska deposit. The source of the gold for
Oregon Buttes has not been identified but in all probability is part of the buried South Pass greenstone belt at depth
beneath the sedimentary cover near the buttes (photo by W. Dan Hausel).
|And if you thought Atlantic City was big. Now this is my kind of town!|
GREENSTONE BELT GEOCHRONOLGY
|Schematic geological map of the South Pass greenstone |
belt generalized from Hausel (1991).
View of the Duncan mine and mill. Significant gold was detected enclosed in a distinct
fold at this mine by the GemHunter. A 2.5 channel sample yielded 0.96 ounce per ton gold!
A pot of gold at the end
of the rainbow at the Duncan mine
(photo by W. Dan Hausel).
|Iron Formation from South Pass showing open fold.|
Banded iron formation from the former Atlantic City
iron ore mine showing many folds
|Figure 10. Visible gold in sample from the Carissa mine dump.|
|Frozen in History - The Rock Creek processing plant at the end of the gravel - work stopped at this point after the Japanese bombed Pearl Harbor. You can almost imagine hearing the news at the end of the day of mining.|
|Rock Creek showing areas that remain unmined.|
|Soil profile in Rock Creek. The owners indicated they|
panned gold from all layers in the loam.
During past mining, the loam was rejected.
|Gold from the Gerald Stout placer operation on Rock Creek at South Pass.|
A 7.5 ounce nugget recovered from the E.T. Fisher dredge
tailings by a prospector from Rock Springs.
|Another field trip group at South Pass with the GemHunter|
The Gerald Stout placer operation on Rock Creek.
- RECOMMENDED READING
- Hausel, W.D., 1989, The geology of Wyoming's precious metal lode and placer deposits: Geological Survey of Wyoming Bulletin 68, 248 p.
- Hausel, W.D., 1991, Economic geology of the South Pass granite-greenstone belt, Wind River Mountains, western Wyoming: Geological Survey of Wyoming Report of Investigations 44, 129 p.
- Hausel, W.D., 1993, Mining history and geology of some of Wyoming's metal and gemstone districts: Wyoming Geological Association Jubilee Anniversary Field Conference Guidebook, p. 39-63.
- Hausel, W.D., and Hull, J., 1990, Guide to gold mineralization and Archean geology of the South Pass greenstone belt, Wind River Range, Wyoming, in Roberts, S., Geologic field trips to western Wyoming: Geological Survey of Wyoming Public Information 29, p. 178-191.
- Hausel, W.D., 1994, Mining history of Wyoming's gold, copper, iron, and diamond districts: Mining History Association 1994 Annual, Reno, Nevada, p. 27-44.
- Hausel, W.D., and Love, J.D., 1991, Guide to the geology and mineralization of the South Pass area, in S. Roberts, editor, Mineral Resources of Wyoming: Wyoming Geological Association 42nd Annual Field Conference Guidebook, p. 181-200.
- Hausel, W.D., and Love, J.D., 1991, Guide to the geology and mineralization of the South Pass area: Wyoming State Geological Survey Reprint 49, 20 p.
- Snyder, G.L., Hausel, W.D., Klein, T.L., Houston, R.S., and Graff, P.J., 1989, Precambrian rocks and mineralization, Wyoming Province: 28th International Geological Congress guide to field trip T-332, July 19-25, 48 p.
|After many years, it was wonderful to see Gerald Stout|
again. The GemHunter (left) and miner Gerald Stout.
Dave Fritag shows vial filled with gold mined from the dry
alluvial placers at Oregon Gulch (photo
by W. Dan Hausel, and courtesy of Dave Fritag).
Another of many field trips to South Pass as the GemHunter (green jacket)
talks about the gold-bearing shear zones at South Pass. In addition to leading
field trips for the general public, rock hound, prospecting and history
groups and clubs, the GemHunter also led field trips for various
regional, national and international field conferences including the Wyoming
Geological Association, International Geological Congress, and more. No
other geologist in the history of the Wyoming Geological Survey had won
so many honors including the Thayer Lindsley Award for a Major
Gold Discovery (this was presented to 6 other geologists
including Hausel), the Wyoming Geological Association's Distinguished
Service Award and many others.