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Stella; Monday Mine?, Twelvemile Arm, Kasaan Bay, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
Regional Level Types
Stella; Monday Mine?- not defined -
Twelvemile Arm- not defined -
Kasaan BayBay
Prince of Wales IslandIsland
Ketchikan Mining DistrictMining District
Prince of Wales-Hyder Census AreaCensus Area
AlaskaState
USACountry

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Latitude & Longitude (WGS84):
55° 30' 9'' North , 132° 36' 28'' West
Latitude & Longitude (decimal):
55.50250,-132.60778
GeoHash:
G#: c1cewrvvq
GRN:
N38W55
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Hollis112 (2011)6.3km
Thorne Bay483 (2017)21.3km
Klawock765 (2017)31.2km
Hydaburg391 (2017)35.6km
Mindat Locality ID:
200155
Long-form identifier:
mindat:1:2:200155:8
GUID (UUID V4):
0


Location: In most reports, the Monday prospect is located about 0.9 mile west-northwest of Kajusgidnas Point and about 0.5 mile north-northwest of the center of section 35, T. 73 S., R. 84 E. Herreid and Rose (1966) and Maas and others (1991) did not visit it or could not find it; they use Brooks' (1902) location, which may not be accurate.
Geology: The Monday deposit is a quartz vein 4 to 14 inches thick along a shear zone (Brooks, 1902; Herreid and Rose, 1966). The quartz contains galena and pyrite; assays showed $5 to $8 per ton in gold (at $20.67 per ounce) and 15-40 ounces of silver per ton. The only workings are open cuts. There is no indication of work since 1901. The rocks in the vicinity of the Monday prospect are Silurian or Ordovician slate of the Descon Formation; sheared andesite forms one wall of the vein. The Stella prospect is nearby. Wright and Wright (1908) describe it as a 3-foot-thick quartz-calcite vein with gouge along one wall; the vein follows the contact between a diorite porphyry dike and black slate. The quartz carries pyrite, galena, and sphalerite. The gold content is low. The prospect was explored by a 130-foot tunnel, which Maas and others (1991) could not find.
Workings: The only workings on the Monday prospect are open cuts. The Stella prospect was explored by a 130-foot tunnel.
Age: Unknown, other than that the prospects are in Silurian or Ordovician rocks.

Commodities (Major) - Ag, Au, Pb, Zn
Development Status: None
Deposit Model: Polymetallic vein? (Cox and Singer, 1986; model 22c).

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


5 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
ⓘGalena2.CD.10PbS
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3

List of minerals for each chemical element

CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ CalciteCaCO3
Oⓘ QuartzSiO2
SiSilicon
Siⓘ QuartzSiO2
SSulfur
Sⓘ GalenaPbS
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
CaCalcium
Caⓘ CalciteCaCO3
FeIron
Feⓘ PyriteFeS2
ZnZinc
Znⓘ SphaleriteZnS
PbLead
Pbⓘ GalenaPbS

Other Databases

Link to USGS - Alaska:CR042

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

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

Brooks, A.H., 1902, Preliminary report on the Ketchikan mining district, Alaska, with an introductory sketch of the geology of southeastern Alaska: U.S. Geological Survey Professional Paper 1, 120 p. Cobb, E. H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Craig quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-869, 262 p. Herreid, Gordon, and Rose, A.W., 1966, Geology and geochemistry of the Hollis and Twelvemile Creek area, Prince of Wales Island southeastern Alaska: Alaska Division of Mines and Minerals Geologic Report 17, 32 p. Maas, K.M., Bittenbender, P E., and Still, J.C., 1995, Mineral investigations in the Ketchikan mining district, southeastern Alaska: U.S. Bureau of Mines Open-File Report 11-95, 606 p. Maas, K.M., Still, J. C., Clough, A. H., and Oliver, L. K., 1991, Mineral investigations in the Ketchikan mining district, Alaska, 1990: Southern Prince of Wales Island and vicinity--Preliminary sample location maps and descriptions: U.S. Bureau of Mines Open-File Report 33-91, 139 p. Wright, F.E., and Wright, C.W., 1908, The Ketchikan and Wrangell mining districts, Alaska: U.S. Geological Survey Bulletin 347, 210 p.
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