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Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Rockford Mine, Shoshone County, Idaho, USAi
Regional Level Types
Rockford MineProspect
Shoshone CountyCounty
IdahoState
USACountry

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Latitude & Longitude (WGS84):
47° 29' 39'' North , 116° 6' 39'' West
Latitude & Longitude (decimal):
47.49439,-116.11100
GeoHash:
G#: c2mqjy4dc
GRN:
N32W58
Type:
Prospect
Köppen climate type:
Dsb : Warm, dry-summer continental climate
Nearest Settlements:
PlacePopulationDistance
Wardner186 (2017)3.6km
Kellogg2,069 (2017)4.9km
Smelterville603 (2017)7.5km
Osburn1,510 (2017)8.5km
Pinehurst1,580 (2017)10.7km
Mindat Locality ID:
402467
Long-form identifier:
mindat:1:2:402467:8
GUID (UUID V4):
0
Other/historical names associated with this locality:
Rockford Group; Sunshine Consolidated Inc.


Located in the headwaters of the West Fork Big Creek approximately 3.1 miles (5.0 kilometers) south of Kellogg, Idaho.
Commodities (Major): Lead, Silver
Development Status: Prospect
Host Rock Unit(s): St. Regis Formation
Host Rock(s): Quartzite
Structure(s): Midland Fault; Buckeye Fault
Alteration(s): Oxidation
Deposit Type(s): Vein
Tectonic Structure: Belt Basin

Other Information: Founded in 1907, at its height the property consisted of 11 claims, 5 adits, and 2510 lineal feet of workings. In 1934 the property was procured by the Sunshine Consolidated Co.

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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

idahogeomap.nkn.uidaho.edu (n.d.) https://idahogeomap.nkn.uidaho.edu/webmap/WebData/Mines.asp?Operation=Details&IDs=SP0252
Campbell, S. (1922) Twenty-fourth Annual Report of the Mining Industry of Idaho for the year 1922, 209 pages.
Kauffman, J.D., Bennett, E.H., Mitchell, V.E. (2003) Site Inspection Report for the Abandoned and Inactive Mines in Idaho on U.S. Forest Service Lands (Region 1), Idaho Panhandle National Forest: Volume V, Section B: Coeur d'Alene River Drainage Surrounding the Coeur d'Alene Mining District (Excluding the Prichard Creek and Eagle Creek Drainages), Secondary Properties. Idaho Geological Survey Staff Report, S-03-6, 211 pages.
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