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Peerless Prospect, Nighthawk Mining District, Okanogan County, Washington, USAi
Regional Level Types
Peerless ProspectGroup of Prospects
Nighthawk Mining DistrictMining District
Okanogan CountyCounty
WashingtonState
USACountry

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Latitude & Longitude (WGS84):
48° 57' 11'' North , 119° 41' 13'' West
Latitude & Longitude (decimal):
48.95313,-119.68698
GRN:
N33W58
Type:
Group of Prospects
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Loomis159 (2011)15.2km
Oroville1,677 (2017)18.4km
Osoyoos4,314 (2008)19.3km
Oliver4,647 (2008)27.4km
Tonasket1,016 (2017)33.0km
Mindat Locality ID:
17672
Long-form identifier:
mindat:1:2:17672:2
GUID (UUID V4):
0
Other/historical names associated with this locality:
Worthington Prospect; Little Chopaka Prospect; Defense Prospect


A copper-chromium prospect located on the south face of Little Chopaka Mountain that worked serpentinized peridotite cutting mineralized quartzite, argillite, and greenstone. Development includes several adits and shafts.
Tectonics: Rocky Mountains

Commodity: Platinum has been reported on little chopaka mountain, most likely in association with the chromite deposit, but its occurrence has not been verified

Deposit: Peridotite that contains the chromite is 0.125-0.25 mi wide and 0.5 mi long

Deposit type: Podiform chromite (minor)

Development: 4 claims

Rock formation(s): Palmer Mountain Greenstone


Ore(s): Magmatic Segregation

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


Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ 'Olivine Group'
Formula: M2SiO4
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrrhotite
Formula: Fe1-xS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
Group 9 - Silicates
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Unclassified
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Olivine Group'-M2SiO4

List of minerals for each chemical element

HHydrogen
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
OOxygen
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ Olivine GroupM2SiO4
AlAluminium
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
SiSilicon
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ Garnet GroupX3Z2(SiO4)3
Siⓘ Olivine GroupM2SiO4
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
CaCalcium
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
CuCopper
Cuⓘ ChalcopyriteCuFeS2

Other Databases

Link to USGS MRDS:10041565

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

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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