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 Prospect (ARDF - NM278; west of central Osborn Creek), Nome Mining District, Nome Census Area, Alaska, USAi
Regional Level Types
Unnamed Prospect (ARDF - NM278; west of central Osborn Creek)- not defined -
Nome Mining DistrictMining District
Nome Census AreaCensus Area
AlaskaState
USACountry

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Latitude & Longitude (WGS84):
64° 35' 8'' North , 165° 6' 50'' West
Latitude & Longitude (decimal):
64.58556,-165.11389
GeoHash:
G#: b76x6trwp
GRN:
N44W53
Köppen climate type:
ET : Tundra
Nearest Settlements:
PlacePopulationDistance
Nome3,806 (2018)16.8km
Mindat Locality ID:
202345
Long-form identifier:
mindat:1:2:202345:1
GUID (UUID V4):
0


Location: This unnamed lode prospect is at an elevation of about 550 feet on the east flank of hill 1043, a few thousand feet north of central Osborn Creek (NM305). The map location is at the north edge of section 32, T. 10 S., R. 32 W., Kateel River Meridian. It is approximately located, probably to within one-half mile. It is locality 54 of Cobb (1972 [MF 463], 1978 [OFR 78-93]).
Geology: This deposit consists of a quartz vein containing iron and copper sulfides, inferred to be pyrite and chalcopyrite. The vein is near a contact between schist and greenstone and is reported to have assayed from 0.2 to 2 ounces of gold per ton (Smith, 1908). Copper sulfide oxidation products, inferred to be malachite and azurite, are also present. Bedrock in this area is marble, schist, and local greestone (Hummel, 1962 [MF 247]). The prospect is within about one-half mile of the head of mining activity on Osborn Creek (NM305).
Workings: Prospect pits are probably present.
Age: Mid-Cretaceous or younger; vein cross cuts schist metamorphosed in the mid-Cretaceous.
Alteration: Oxidation of chalcopyrite to secondary copper minerals.

Commodities (Major) - Au, Cu
Development Status: No
Deposit Model: Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a).

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


6 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘAzurite ?5.BA.05Cu3(CO3)2(OH)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2

List of minerals for each chemical element

HHydrogen
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ MalachiteCu2(CO3)(OH)2
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ QuartzSiO2
SiSilicon
Siⓘ QuartzSiO2
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ PyriteFeS2
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
CuCopper
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ MalachiteCu2(CO3)(OH)2
AuGold
Auⓘ Native GoldAu

Other Databases

Link to USGS - Alaska:NM278

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. Smith, P.S., 1908, Investigations of mineral deposits of Seward Peninsula: U.S. Geological Survey Bulletin 345-E, p. 206-250.
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