Crystal Peak Mine (Crystal Mine; Quartz Knob occurrence; Unnamed Quartz mine ), Quartz Knob, Dog Valley District, Sierra Co., California, USA
|Latitude & Longitude (WGS84):||39° 35' 45'' North , 120° 4' 36'' West|
|Latitude & Longitude (decimal):||39.59581,-120.07672|
|Köppen climate type:||Csb : Warm-summer Mediterranean climate|
A former silica occurrence/mine and Cu-W occurrence located S of center sec. 10, T20N, R17E, MDM, 0.1 km (0.1 mile) N of Quartz Knob (summit) and 4.3 km (2.7 miles) NNE of Crystal Peak (coordinates of record), ½ mile N of Crystal Peak guard station, on National Forest land. MRDS database stated accuracy for this location is 1,000 meters. Operated during WWII for electronics grade quartz crystals.
Local rocks include Tertiary volcanic flow rocks, unit 17 (Cascade Range).
Workings include surface and underground openings.
2 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
|Gelasian - Chattian|
1.806 - 28.1 Ma
|Tertiary volcanic flow rocks, unit 17 (Cascade Range)|
Age: Cenozoic (1.806 - 28.1 Ma)
Description: Tertiary volcanic flow rocks; minor pyroclastic deposits.
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.