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Mad Dog 2 Prospect, Woewodski Island, Petersburg Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Mad Dog 2 Prospect | Prospect |
| Woewodski Island | Island |
| Petersburg Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
56° 32' 48'' North , 133° 1' 30'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Petersburg | 2,948 (2017) | 29.8km |
Location: The Mad Dog 2 prospect is about 0.9 mile south-southeast of the east end of Harvey Lake at an elevation of about 400 feet. It is near the northwest corner of section 36, T. 61 S., R. 79 E.
Geology: Since the 1970's much of Woewodski Island has been covered by claims held by a succession of companies: Resource Associates of Alaska, Cominco Exploration, Colony Pacific, Amselco, Kennecott Exploration, Westmin Resources, and currently (2008) the Bravo Venture Group. This prospect probably was within those claims several times and it is under claim in 2008. In 1998, two holes were drilled on the Mad Dog 2 prospect by P. Beardslee (Still and others, 2002). Most of the area is heavily vegetated.
The sparse outcrop consists of metamorphosed intermediate to felsic volcanic rocks of the Triassic Hyd Formation (Brew, 1997; Karl and others, 1999). Near the 1998 drill site, Still and others (2002) located an outcrop of schist with a band of pyrite, chalcopyrite, and sphalerite 0.3 to 0.8 feet thick. Six samples contained 67 to 2,867 parts per billion gold, 2.4 to 27.1 parts per million (ppm) silver, 240 to 1,512 ppm copper, and 732 ppm to 2.9 percent zinc. The drill holes were said to miss any significant mineralization.
Workings: Since the 1970's much of Woewodski Island has been covered by claims held by a succession of companies: Resource Associates of Alaska, Cominco Exploration, Colony Pacific, Amselco, Kennecott Exploration, Westmin Resources, and currently (2008) the Bravo Venture Group. This prospect probably was within those claims several times and it is under claim in 2008. In 1998, two holes were drilled on the Mad Dog 2 prospect by P. Beardslee (Still and others, 2002).
Age: Late Triassic based on the age of the host rock and similarities to massive sulfide deposits in the Duncan-Zarembo belt of mineralization.
Alteration: None specifically noted.
Reserves: None.
Commodities (Major) - Ag, Au, Cu, Zn
Development Status: None
Deposit Model: Kuroko massive sulfide (Cox and Singer, 1986; model 28a).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
3 valid minerals.
Detailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
Other Databases
| Link to USGS - Alaska: | PE100 |
|---|
Other Regions, Features and Areas containing this locality
North America
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
USA
- Alaska
- Petersburg Borough
- Kupreanof Mining DistrictMining District
- ⭔Wrangell-Petersburg Census AreaBorough
- Petersburg Borough
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References
Brew, David A. (1997) Reconnaissance geologic map of the Petersburg C-4 Quadrangle, southeastern Alaska. Open-File Report Vol. 1997 (97-156) US Geological Survey doi:10.3133/ofr97156j
