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Unnamed Ag-Cu prospect [1], Vista Peak, Whipple District (Monumental District), Whipple Mts, San Bernardino Co., California, USA

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Latitude & Longitude (WGS84): 34° 15' 10'' North , 114° 24' 6'' West
Latitude & Longitude (decimal): 34.2527770996, -114.401664734

A Ag-Cu prospect located in sec. 19, T2N, R25E, SBM, 5.5 km (3.4 miles) N of Vista Peak (coordinates of record), on Bureau of LAnbd MAnagaement administered land. MRDS database stated accuracy for this location is 10 meters. This property is No. 17 in the Whipple Mountains report.

This property was examined in conjunction with the mineral appraisal of the Whipple Mountains Wilderness Study Area (Bureau of Land Management) in 1980. Backup information can be found in the WFOC mineral property files.

The ore body strikes N85E and dips 23W. Ore body No. 1 is tabular in a shear zone. ore Body No. 2 is irregular. The primary mode of origin was hydrothermal activity and the secondary mode was oxidation. Primary ore control was faulting and the secondary control was fracturing. Wallrock alteration is slight (propylitic). Local rocks include Precambrian igneous and metamorphic rock complex.

Mineral List

2 valid minerals.

Regional Geology

This 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 data will improve over time as more accurate maps and data sets are added.

Miocene - Paleoproterozoic5.333 - 2500 MaPrecambrian igneous and metamorphic rock complex

Major:: {gneiss},Minor:: {granitoid},Incidental:: {anorthosite, syenite, diorite, amphibolite}

Complex of Precambrian igneous and metamorphic rocks. Mostly gneiss and schist intruded by igneous rocks; may be Mesozoic in part.

Present only in southern California

Precambrian541 - 4000 MaPrecambrian metamorphic and undivided crystalline: undivided crystalline rocks (seafloor units may include a variety of metamorphosed rock)

Metamorphic and undivided crystalline: undivided crystalline rocks (seafloor units may include a variety of metamorphosed rock)

Paleoproterozoic1600 - 2500 MaPaleoproterozoic intrusive and metamorphic terranes

Intrusive and metamorphic terranes

Mixtures of metamorphic and intrusive or plutonic rocks, tracts known as crystalline, migmatitic terranes, moderately to highly metamorphosed rocks of unknown origin with or without intrusions. This classification is inherently prone to variable interpretation, as other compilers might distinguish some packages by their metamorphic or gneissic protoliths, and the associated age ranges may be more variable.

References for regional geology:

Data provided by

Garrity, C.P., and Soller, D.R.,. Database of the Geologic Map of North America: adapted from the map by J.C. Reed, Jr. and others (2005). U.S. Geological Survey Data Series 424 .

USGS compilers. State geologic map data. State Maps.

Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d.

The above list contains all mineral locality references listed on 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 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.


U.S. Bureau of Mines Open-File Report MLA 50-87 (1987), Appendix B, No. 17: 95.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10262373.

U.S. Bureau of Mines, Minerals Availability System (MAS) file #0060711167.

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