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Big Bertha Mine (Veta Grande Mine; Veta Grande claim; Crystal Caverns claim; Big Bertha Extension Mine), Middle Camp-Oro Fino District, Dome Rock Mts, La Paz Co., Arizona, USA

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Latitude & Longitude (WGS84): 33° 38' 25'' North , 114° 19' 0'' West
Latitude & Longitude (decimal): 33.64028,-114.31667
GeoHash:G#: 9myxqsj0u
Other regions containing this locality:Sonoran Desert, North America
Locality type:Mine
Köppen climate type:BWh : Hot deserts climate


A quartz occurrence located in the SW¼ sec. 34, T4N, R20W, about 5 miles SW of Quartzsite (not Quartzite).

Mineralization is quartz crystals in fissures in highly altered schists.


Mineral List


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

Quaternary - Miocene
0 - 23.03 Ma



ID: 3185380
Cenozoic sedimentary rocks

Age: Cenozoic (0 - 23.03 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Oxfordian - Hettangian
157.3 - 201.3 Ma



ID: 2847766
Jurassic volcanic rocks

Age: Jurassic (157.3 - 201.3 Ma)

Stratigraphic Name: Ali Molina Formation; Topawa Group; Mount Wrightson Formation; Canelo Hills Volcanics; Cobre Ridge Tuff; Black Rock volcanics; Planet Volcanics

Description: Massive quartz-feldspar porphyry, generally interpreted as thick, welded rhyolitic tuffs, with locally abundant lava, and sandstone and conglomerate derived from volcanic rocks. Rare eolian quartzite units are interbedded in southern Arizona. Includes Ali Molina Formation, Mount Wrightson Formation, part of the Canelo Hills Volcanics, Cobre Ridge tuff, Black Rock volcanics, Planet Volcanics, and equivalent rocks. (160-200 Ma)

Comments: The Jurassic quartz porphyry, Ali Molina, Mt Wrightson, Cobre Ridge, Black Rock volcanics, Planet Volcanics.

Lithology: Major:{rhyolite,sandstone,conglomerate}, Minor:{quartzite}

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



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

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Galbraith. F.W. & D.J. Brennan (1959), Minerals of Arizona: 93.
Sprunger, M. (1980), Hematite from the Dome Rock Mountains near Quartzsite, Arizona, Mineralogical Record: 11: 227-229.
Wilson, W.E. (1986), What's new in minerals, Mineralogical Record: 17: 210, 212, 404-405.
Phillips, K.A. (1987), Arizona Industrial Minerals, 2nd. Edition, Arizona Department of Mines & Minerals Mineral Report 4, 185 pp.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 246, 345, 432.
MRDS database Dep. ID file #10065032, MRDS ID #TC40021; and, Dep. ID #10234939, MAS ID #0040120175.
Arizona Bureau of Mines file data.

Mineral and/or Locality  
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