Eagle's Nest Mine (Mystery Wind Mine), Sage Hill, Michigan Bluff District (Michigan Bluff deposit), Placer Co., California, USA
|Latitude & Longitude (WGS84):||39° 1' 24'' North , 120° 46' 32'' West|
|Latitude & Longitude (decimal):||39.02361,-120.77583|
|Köppen climate type:||Csb : Warm-summer Mediterranean climate|
A lode Au occurrence/mine located in sec. 29 & in the SE¼ sec. 30, T14N, R11E, MDM, about 2.2 km SW of Sage Hill and about 8 km (4.8 miles) ENE of Foresthill, along Ladys Canyon, on French Meadow Road, on private land. The Eagle's Nest was a discovery pit at the top and some adits lower down in a five level deposit of crystallized gold. The De Maria Mine is also on this deposit.
NOTE: Specifics regarding this mine's location are based on the data for the De Maria Mine at the lowest level of the same deposit.
The Mystery Wind Mine does not exist as a separate mine (Dona Leicht, pers. comm.) and was a made-up name used to conceal the origin of the specimens as was Eagle's Nest. (Wayne Leicht, pers. comm.) Both Mystery Wind and Eagle's Nest specimens are from the upper levels of the De Maria property and should be labelled Eagle's Nest as that was the published locality.
4 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
|Triassic - Ordovician|
201.3 - 485.4 Ma
|Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada)|
Age: Phanerozoic (201.3 - 485.4 Ma)
Stratigraphic Name: Calaveras Complex (part); Shoo Fly Complex (part); Blue Canyon Formation; Briceburg Formation; Cape Horn Slate; Delhi Formation; Hite Cove Formation; Kanaka Formation; Relief Quartzite; Tightner Formation
Comments: Western Sierra Nevada. Lower Paleozoic Shoo Fly Complex and upper Paleozoic to lower Mesozoic Calaveras Complex, undivided. Deformed and metamorphosed rocks composed primarily of quartzite, argillite, and chert; includes melange
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.