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Gem Hill, Rosamond Hills, Rosamond, Mojave-Rosamond District (Mojave District), Kern Co., California, USA

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Latitude & Longitude (WGS84): 34° 55' 28'' North , 118° 13' 13'' West
Latitude & Longitude (decimal): 34.92444,-118.22028


A summit and semi-precious gem occurrence located in the SE¼ sec. 26, T10N, R13W, MDM, 5½ miles NW of Rosamond.

Mineral List

Mineral list contains entries from the region specified including sub-localities

4 valid minerals.

Regional Geology

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

Zanclean - Aquitanian
3.6 - 23.03 Ma
Tertiary pyroclastic and volcanic mudflow deposits, unit 8 (Northern Mojave Desert)

Age: Neogene (3.6 - 23.03 Ma)

Stratigraphic Name: Gem Hill Formation (part); Kinnick Formation; Pickhandle Formation

Description: Tertiary pyroclastic and volcanic mudflow deposits.

Lithology: Major:{rhyolite}, Minor:{dacite}, Incidental:{andesite, basalt}

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. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


Localities in this Region


This page 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

Lewis, W. Scott (1942), Gem collecting in California: Hobbies: 47: 116-117.

Troxel, Bennie Wyatt & P.K. Morton (1962), Mines and mineral resources of Kern County, California: California Division Mines & Geology County Report No. 1, 370 pp.: 91-92.

Sheppard, R.A. and Gude, A.J. (1964) Reconnaissance of zeolite deposits in tuffaceous rocks of the western Mojave Desert and vicinity, California. USGS Professional Paper 501-C: 114-116.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 317.

Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 345, 375.

Mineral and/or Locality  
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