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Cooperative Prospects, Howard Creek, Index Mining District, Snohomish County, Washington, USAi
Regional Level Types
Cooperative ProspectsClaim
Howard CreekCreek
Index Mining DistrictMining District
Snohomish CountyCounty
WashingtonState
USACountry

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Latitude & Longitude (WGS84):
47° 51' 47'' North , 121° 25' 15'' West
Latitude & Longitude (decimal):
47.86330,-121.42110
GRN:
N32W60
Type:
Claim
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Index194 (2017)11.1km
Baring220 (2011)11.1km
Skykomish207 (2017)17.7km
May Creek818 (2011)18.4km
Gold Bar2,112 (2017)20.6km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Darrington Rock & Gem ClubDarrington, Washington46km
Mindat Locality ID:
72196
Long-form identifier:
mindat:1:2:72196:6
GUID (UUID V4):
0
Other/historical names associated with this locality:
Howard Prospect; Keystone Prospect


High on Howard Creek, the Cooperative prospects were one of the more remote mining operations in the Index district. The group consisted of two blocks of claims, one near the mouth of the creek and the other by Howard Lake. Overall around 1500' of workings were driven in adits and shafts.

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


3 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘBornite2.BA.15Cu5FeS4
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrite2.EB.05aFeS2

List of minerals for each chemical element

SSulfur
Sⓘ BorniteCu5FeS4
Sⓘ ChalcopyriteCuFeS2
Sⓘ PyriteFeS2
FeIron
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
CuCopper
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcopyriteCuFeS2

Other Databases

Link to USGS MRDS:10204753

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

Weaver, C.E. (1912) Geology and Ore Deposits of the Index Mining District. Washington Geological Survey Bulletin No.7, 96 pages.
Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.
Jacobson, D., Pisoni, V., Cady, G., Woodhouse, P. (2008) Discovering Washington's Historic Mines, Volume 1: The West Central Cascade Mountains. Northwest Mining Publishers, 230 pages.
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