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Craig Prospect, Ketchikan Gateway Borough, Alaska, USAi
Regional Level Types
Craig ProspectProspect
Ketchikan Gateway BoroughBorough
AlaskaState
USACountry

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Latitude & Longitude (WGS84):
56° 27' 54'' North , 131° 15' 36'' West
Latitude & Longitude (decimal):
56.46500,-131.26000
GeoHash:
G#: c449jp5kk
GRN:
N38W54
Type:
Prospect
Köppen climate type:
Dfc : Subarctic climate
Mindat Locality ID:
197077
Long-form identifier:
mindat:1:2:197077:0
GUID (UUID V4):
0


Location: This prospect consists of about 60 claims staked in 1977 about 4 miles west-northwest of Mt. Pounder. Their location is not well known and somewhat arbitrarily, the center of the claims is plotted about 0.5 mile east of the center of section 30, T. 62 S., R. 91 E. This location may be a mile or more from the center of the claims.
Geology: Sixty 'Craig' claims were staked here in 1977 but were allowed to lapse after two years; there apparently has been no activity since. The country rocks in the general area of the Craig occurrence are Mesozoic or Paleozoic metasedimentary rocks, locally including marble, and subordinate metavolcanic rocks (Elliott and Koch, 1981; Koch, 1996). As described by Elliott and Koch (1981), the mineralization consists of of chalcopyrite, pyrite, and pyrrhotite disseminated in the metasedimentary rocks; the chalcopyrite also occurs in thin veinlets. Skarn float at or near the prospect contains magnetite and minor chalcopyrite. Still and others (2002) sampled rubblecrop from talus in the area. Several samples contained layered and disseminated sulfides, mainly pyrite; with disseminated chalcopyrite. A sample of hornblendite (skarn?) with 25 percent sulfides, mainly pyrite and pyrrhotite, contained 5,706 parts per million (ppm) copper and 3.1 percent zinc. Sample with layered and disseminated pyrite contained negligible base metal values and the highest gold value in the 7 samples that were selected for analysis was only 30 parts per billion gold.
Workings: Sixty 'Craig' claims were staked here in 1977 but were allowed to lapse after two years; there apparently has been no activity since. Limited sampling by the U.S.G.S. and Bureau of Land Management.
Age: Mesozoic or Paleozoic(?).
Reserves: None.

Commodities (Major) - Cu
Development Status: None
Deposit Model: Layered and disseminated sulfides in metamorphic rocks and skarn.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


4 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4

List of minerals for each chemical element

OOxygen
Oⓘ MagnetiteFe2+Fe23+O4
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
CuCopper
Cuⓘ ChalcopyriteCuFeS2

Other Databases

Link to USGS - Alaska:BC010

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Elliott, R.L., and Koch, R.D., 1981, Mines, prospects, and selected metalliferous mineral occurrences in the Bradfield Canal quadrangle, Alaska: U.S. Geological Survey Open-File Report 81-728-B, 23 p., 1 sheet, scales 1:250,000 and 1:63,360. Koch, R.D., 1996 [In press), Reconnaissance geologic map of the Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report, 1 sheet, scale 1:250,000. Koch, R.D., 1997 [in press], Metalliferous mineral resource potential in the Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report, 1 sheet, scale 1:250,000. Still, J.C., Bittenbender, P.E., Bean, K.W., and Gensler, E.G., 2002, Mineral assessment of the Stikine area, central southeast Alaska: Bureau of Land Management Technical Report 51, 560 p. U.S. Bureau of Mines, 1979, Claim map 118: Mines and prospects of the Bradfield Canal quadrangle, Alaska: U.S. Bureau of Mines Open-File Report 20-73, 1 sheet, scale 1:250,000.
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