Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Unnamed Occurrence (ARDF - CG017; between arms of Castle Bay), Lake and Peninsula Borough, Alaska, USAi
Regional Level Types
Unnamed Occurrence (ARDF - CG017; between arms of Castle Bay)- not defined -
Lake and Peninsula BoroughBorough
AlaskaState
USACountry

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Latitude & Longitude (WGS84):
56° 12' 35'' North , 158° 18' 36'' West
Latitude & Longitude (decimal):
56.20972,-158.31000
GeoHash:
G#: b3zrv8djm
GRN:
N38W65
Köppen climate type:
Dfc : Subarctic climate
Mindat Locality ID:
200492
Long-form identifier:
mindat:1:2:200492:4
GUID (UUID V4):
0


This site is located on land conveyed to or patented by the Bristol Bay Native Corporation.
Location: This site is located approximately on the point between the northwest and southwest arms of Castle Bay (MacKevett and Holloway, 1977, locality 26). Site location is accurate to within 2 miles.
Geology: This site is described as an altered zone in Tertiary intrusive and volcanic rocks (MacKevett and Holloway, 1977). Fields (1977) reports a 3/4-square-mile color anomaly associated with a small quartz diorite body in this general area. A silt sample collected by Bear Creek Mining Company from a northeast-flowing drainage approximately 1 mile west of the site as plotted contained 138 ppm copper and 3.4 ppm molybdenum. Sparse chalcopyrite was noted in quartz diorite boulders.
Workings: Bear Creek Mining Company did limited exploration at this occurrence during the period 1975-1976.
Age: Tertiary.

Commodities (Major) - Cu; (Minor) - Ag, Mo
Development Status: None
Deposit Model: Porphyry copper? (Cox and Singer, 1986; model 17)

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


2 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘMolybdenite2.EA.30MoS2

List of minerals for each chemical element

SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ MolybdeniteMoS2
FeIron
Feⓘ ChalcopyriteCuFeS2
CuCopper
Cuⓘ ChalcopyriteCuFeS2
MoMolybdenum
Moⓘ MolybdeniteMoS2

Other Databases

Link to USGS - Alaska:CG017

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

Fields, E.D., 1977, 1976 Annual report: Alaska search, Chignik area-Bristol Bay region: Bear Creek Mining Company, 44 p., 22 map sheets. (Report held by the Aleut Corporation, Anchorage, Alaska.) MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.
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