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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Holmason and Helde Prospect, Nome Mining District, Nome Census Area, Alaska, USAi
Regional Level Types
Holmason and Helde ProspectProspect
Nome Mining DistrictMining District
Nome Census AreaCensus Area
AlaskaState
USACountry

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Latitude & Longitude (WGS84):
64° 43' 31'' North , 165° 21' 28'' West
Latitude & Longitude (decimal):
64.72528,-165.35778
GeoHash:
G#: b7d2jnyhh
GRN:
N44W53
Type:
Prospect
Köppen climate type:
ET : Tundra
Nearest Settlements:
PlacePopulationDistance
Nome3,806 (2018)25.0km
Mindat Locality ID:
198011
Long-form identifier:
mindat:1:2:198011:3
GUID (UUID V4):
0


Location: The Holmason and Helde lode prospect is at an elevation of about 350 feet in the headwaters of an unnamed east tributary to Goldbottom Creek. It is 0.8 mile due east of the Snake River road, in the NW1/4 section 7, T. 9 S., R. 33 W., Kateel River Meridian. This is locality 6 of Hummel (1962 [MF 247]) and 34 of Cobb (1972 [MF 463], 1978 [OFR 78-93]).
Geology: Hummel (1962 [MF 247, locality 6]) reported copper and iron sulfides at this site. The deposit is near the contact between graphitic mica schist and graphitic quartz schist (mapping by Kennecott Exploration Co., 1994-5). Some marble occurs in the graphitic mica schist unit. No other information about the prospect is available.
Workings: Some surface prospecting pits may be present.
Alteration: Oxidation?

Commodities (Major) - Cu
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


2 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite ?2.CB.10aCuFeS2
ⓘPyrite2.EB.05aFeS2

List of minerals for each chemical element

SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ PyriteFeS2
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
CuCopper
Cuⓘ ChalcopyriteCuFeS2

Other Databases

Link to USGS - Alaska:NM290

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

Cobb, E.H., 1972, Metallic mineral resources map of the Nome quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-463, 2 sheets, scale 1:250,000. Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Nome quadrangle, Alaska: U.S. Geological Survey Open-File report 78-93, 213 p. Hummel, C.L., 1962, Preliminary geologic map of the Nome C-1 quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-247, 1 sheet, scale 1:63,360.
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