Hayfork Mine, Boise Basin District, Boise Co., Idaho, USA
|Latitude & Longitude (WGS84):||43° 54' 39'' North , 115° 40' 16'' West|
|Latitude & Longitude (decimal):||43.910831451416016, -115.67111206054688|
REF:Deposit:: BALLARD, SAMUEL M., 1924, GEOLOGY AND GOLD RESOURCES BOISE BASIN BOISE CO., IDAHO, IDAHO BUR. MINES & GEOL. BULL. 9, P. 99
Deposit:: ANDERSON, A.L., 1947, GEOLOGY AND ORE DEPOSITS OF BOISE BASIN, IDAHO: USGS BULL. 944-C, P. 241-242.
Commodities (Major) - Gold; (Trace) - Zinc, Antimony, Lead
Development Status: Past Producer
Host Rock: Quartz Monzonite
5 valid minerals.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
66 - 145 Ma
|Idaho batholith, biotite granodiorite|
Age: Cretaceous (66 - 145 Ma)
Reference: Zientek, M.L., P.D. Derkey, R.J. Miller, J.D. Causet et al. Spatial Databases for the Geology of the Northern Rocky Mountains - Idaho, Montana, and Washington. U.S. Geological Survey Open-File Report 2005-1235 Version 1.0. 
|Maastrichtian - Albian|
66 - 113 Ma
|Granodiorite and two-mica granite|
Age: Cretaceous (66 - 113 Ma)
Description: Granodiorite and granite containing biotite, commonly with muscovite; includes bulk of Atlanta lobe (85-67 Ma) and isolated plutons in northern Idaho (107-67 Ma). (Paleocene and Cretaceous Idaho Batholith and Older Cretaceous and Jurassic Intrusive Rocks).
Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052.