Estella Mine, Butte, Butte District (Summit Valley District), Silver Bow Co., Montana, USA
|Latitude & Longitude (WGS84):||46° 1' 28'' North , 112° 32' 18'' West|
|Latitude & Longitude (decimal):||46.02444,-112.53833|
|Köppen climate type:||Dfb : Warm-summer humid continental climate|
Ref: Geology and Ore Deposits of the Butte District, Montana; W. Weed 1912
9 valid minerals.
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
|Biotite-hornblende granodioritic rocks along the Continental Divide, Anaconda Range, Sapphire Mountains, and Flint Creek Range|
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. 
66 - 145 Ma