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Unnamed Cu-Fe-silica occurrence [1] (Unnamed shaft), Mountain Spring, Argus District (Kellcy District; Sherman District), Argus Mts (Argus Range), Inyo Co., California, USA

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A Cu-Fe-silica occurrence located 7.2 km (4.5 miles) NE of Mountain Spring, and NW of La Mott Spring (8.7 air miles due E of Volcano Butte), in the Etcharren Valley, on military reservation land (China Lake Naval Ordnance Test Station). MRDS database accuracy for this location is not stated.

Mineralization is a quartz vein deposit hosted in Late Cretaceous quartz diorite. The ore body is tabular in form (pinch & swell). It strikes N66W and dips 62S. The vein is 2 to 2½ feet wide at surface. It is part of a shear zone which is exposed hanging wall to footwall. The vein pinches down to nothing at 54 feet of depth. The host rock in the vicinity of the shaft is severely altered, chlortized and slickensided. Local rocks include Quaternary alluvium and marine deposits.

Workings include underground openings with a length of 18.9 meters, overall length of 18.9 meters and an overall width of 2.44 meters. The shaft was driven down the dip of the vein shear zone. Below the vein pinch out the workings were shallowed (flattened) in an attempt to pick up the continuation of the vein, but to no avail.

Mineral List



5 entries listed. 3 valid minerals.

The above list 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

Durbin, W.F., G. Hobson, reconnaissance, mapping & sampling completed 4-14-8.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10036272.

 
Mineral and/or Locality  
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