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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Mountain Beaver Mine, Chewuch Mining District, Okanogan County, Washington, USAi
Regional Level Types
Mountain Beaver MineMine
Chewuch Mining DistrictMining District
Okanogan CountyCounty
WashingtonState
USACountry

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Latitude & Longitude (WGS84):
48° 47' 9'' North , 120° 19' 9'' West
Latitude & Longitude (decimal):
48.78611,-120.31944
GeoHash:
G#: c2dmw14p9
GRN:
N33W58
Type:
Mine
Köppen climate type:
Dsc : Dry-summer subarctic climate
Nearest Settlements:
PlacePopulationDistance
Winthrop420 (2017)35.6km
Twisp942 (2017)49.2km
Mindat Locality ID:
22210
Long-form identifier:
mindat:1:2:22210:0
GUID (UUID V4):
0
Other/historical names associated with this locality:
Buckhorn Claim


A gold mine near the Billy Goat Prospect. It was developed by 4 adits and a small flotation mill.
Structure: Steeply Dipping Northwest-Trending Faults And Fractures. Eight Mile Creek Fault

Alteration: Widespread Hydrothermal Alteration

Tectonics: Cascade Volcanic Arc

Commodity: Bi has been reported from property

Deposit: Mineralized agglomerate. Quartz veinlets are As wide As 2 in. See also mrds record d000669

Deposit type: Porphyry Cu-Au

Geology: Andesitic host rocks are part of an island arc. Hollister indicates that this is a cu-mo porphyry

Rock formation(s): Andesite Of Isabella Ridge;Andesite Of Isabella Ridge


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.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Bornite
Formula: Cu5FeS4
ⓘ Chalcocite
Formula: Cu2S
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Gold
Formula: Au
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘGold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘChalcocite2.BA.05Cu2S
ⓘBornite2.BA.15Cu5FeS4
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2

List of minerals for each chemical element

OOxygen
Oⓘ QuartzSiO2
SiSilicon
Siⓘ QuartzSiO2
SSulfur
Sⓘ BorniteCu5FeS4
Sⓘ ChalcopyriteCuFeS2
Sⓘ ChalcociteCu2S
Sⓘ PyriteFeS2
FeIron
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
CuCopper
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ ChalcociteCu2S
AuGold
Auⓘ GoldAu

Other Databases

Link to USGS MRDS:10107742

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

Staatz, M.H., Weis, P.L., Tabor, R.W., Robertson, J.F., Van Noy, R.M., Pattee, E.C., Holt, D.C. (1971) Mineral Resources of the Pasayten Wilderness Area, Washington. US Geological Survey Bulletin 1325
Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.
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