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 - CV040; lower part of south fork of Gravina River), Copper River Mining District, Valdez-Cordova Census Area, Alaska, USAi
Regional Level Types
Unnamed Occurrence (ARDF - CV040; lower part of south fork of Gravina River)- not defined -
Copper River Mining DistrictMining District
Valdez-Cordova Census AreaCensus Area
AlaskaState
USACountry

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Latitude & Longitude (WGS84):
60° 49' 11'' North , 145° 53' 24'' West
Latitude & Longitude (decimal):
60.81972,-145.89000
GeoHash:
G#: bfb3bpyhs
GRN:
N41W53
Köppen climate type:
Dfc : Subarctic climate
Nearest Settlements:
PlacePopulationDistance
Cordova2,196 (2017)31.6km
Valdez3,870 (2017)42.5km
Mindat Locality ID:
200664
Long-form identifier:
mindat:1:2:200664:5
GUID (UUID V4):
0


Occurrence is on Chugach National Forest land.
Location: This occurrence is at about 200 ft. elevation on the lower part of the south fork of the Gravina River. It is in the NW1/4 sec. 23, T. 12 S., R. 4 W., of the Copper River Meridian. Accuracy of the location is within 2000 ft. Location corresponds to site C-55 in Jansons and others (1984).
Geology: This site is on a gravel bar in the Gravina River. Float samples from the area include altered and silicified felsic intrusive rocks containing chalcopyrite, pyrite, and scheelite. Analysis of one sample yielded 245 ppm W (Jansons and others, 1984).
Workings: Area examined by the U.S. Bureau of Mines as part of a mineral evaluation of the Chugach National Forest. Analysis of one sample yielded 245 ppm W (Jansons and others, 1984).
Alteration: Silicification.

Commodities (Major) - W
Development Status: None

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
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘScheelite7.GA.05Ca(WO4)

List of minerals for each chemical element

OOxygen
Oⓘ QuartzSiO2
Oⓘ ScheeliteCa(WO4)
SiSilicon
Siⓘ QuartzSiO2
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ PyriteFeS2
CaCalcium
Caⓘ ScheeliteCa(WO4)
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
CuCopper
Cuⓘ ChalcopyriteCuFeS2
WTungsten
Wⓘ ScheeliteCa(WO4)

Other Databases

Link to USGS - Alaska:CV040

Other Regions, Features and Areas containing this locality

North AmericaContinent
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

Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral occurrences in the Chugach National Forest, southcentral Alaska: U.S. Bureau of Mines Mineral Land Assessment 5-84, 218 p., 2 sheets, scale 1:250,000.
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