Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
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Feldt Prospect, Whitehorse Mountain, Darrington Mining District, Snohomish County, Washington, USAi
Regional Level Types
Feldt ProspectProspect
Whitehorse MountainMountain
Darrington Mining DistrictMining District
Snohomish CountyCounty
WashingtonState
USACountry

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Latitude & Longitude (WGS84):
48° 14' 8'' North , 121° 41' 20'' West
Latitude & Longitude (decimal):
48.23560,-121.68890
GeoHash:
G#: c296qvhbe
GRN:
N33W59
Type:
Prospect
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Swede Heaven768 (2011)6.1km
Darrington1,376 (2017)6.8km
Verlot285 (2015)17.4km
Oso180 (2011)18.2km
Lake Cavanaugh167 (2011)26.5km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Darrington Rock & Gem ClubDarrington, Washington7km
Marysville Rock & Gem Club, Inc.Marysville, Washington42km
Everett Rock & Gem ClubEverett, Washington48km
Mindat Locality ID:
15765
Long-form identifier:
mindat:1:2:15765:7
GUID (UUID V4):
0
Other/historical names associated with this locality:
John Feldt Prospect


A prospect on the north face of Whitehorse Mountain. The ore occurred brecciated veins cutting andesite. It was developed by two open cuts

Note: The Larson Prospect in Huntting (1956) is likely the same as this locality.
Structure: Breccia Zone

Alteration: Host Rocks Are Altered

Tectonics: Cascade Volcanic Arc

Deposit: Mrds record d001708 has been merged with this record and deleted

Deposit type: Polymetallic veins

Rock formation(s): Eastern Melange Belt;Eastern Melange Belt


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


10 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:

ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Berthierite
Formula: FeSb2S4
Habit: needles
Description: included in quartz
ⓘ Calcite
Formula: CaCO3
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Cobaltite
Formula: CoAsS
ⓘ Galena
Formula: PbS
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Sphalerite
Formula: ZnS
ⓘ Stibnite
Formula: Sb2S3
ⓘ 'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘStibnite2.DB.05Sb2S3
ⓘPyrite2.EB.05aFeS2
ⓘArsenopyrite2.EB.20FeAsS
ⓘCobaltite2.EB.25CoAsS
ⓘ'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
ⓘBerthierite2.HA.20FeSb2S4
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3

List of minerals for each chemical element

CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ CalciteCaCO3
Oⓘ QuartzSiO2
SiSilicon
Siⓘ QuartzSiO2
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ BerthieriteFeSb2S4
Sⓘ ChalcopyriteCuFeS2
Sⓘ CobaltiteCoAsS
Sⓘ GalenaPbS
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
Sⓘ StibniteSb2S3
Sⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
CaCalcium
Caⓘ CalciteCaCO3
FeIron
Feⓘ ArsenopyriteFeAsS
Feⓘ BerthieriteFeSb2S4
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
CoCobalt
Coⓘ CobaltiteCoAsS
CuCopper
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ ArsenopyriteFeAsS
Asⓘ CobaltiteCoAsS
SbAntimony
Sbⓘ BerthieriteFeSb2S4
Sbⓘ StibniteSb2S3
Sbⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
PbLead
Pbⓘ GalenaPbS

Other Databases

Link to USGS MRDS:10036802

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

Purdy, C. Phillips Jnr (1951) Antimony Occurrences of Washington, Bulletin No.39, Division of Mines and Geology, Department of Conservation and Development. 1-188
Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.
Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA.pages 57,76
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