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Riggs Mine (Alta Mine [incorrect]), Riggs, Silurian Hills, Silver Lake District, San Bernardino Co., California, USA

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Latitude & Longitude (WGS84): 35° 30' 18'' North , 116° 5' 40'' West
Latitude & Longitude (decimal): 35.50500,-116.09445
Köppen climate type:BWh : Hot deserts climate


A former Ag-Cu-Au-Pb occurrence/mine located in sec. 2, T16N, R8E, SBM, 2.2 km (1.3 miles) E of Riggs (site), in the western Silurian Hills, N of Baker. MRDS database stated accuracy for this location is 1,000 meters.

Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).

Workings include unspecified underground openings (the topo map reflects 1 shaft symbol).


Mineral List


3 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

Tertiary - Lopingian
2.588 - 259.9 Ma



ID: 2931900
Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges)

Age: Phanerozoic (2.588 - 259.9 Ma)

Stratigraphic Name: Atolia Quartz Monzonite; Coxcomb Granodiorite; Holcomb Quartz Monzonite; Lar Quartz Diorite; Liebre Quartz Monzonite; Mount Pinos Granite; Palms Granite; Sands Granite; Teutonia Quartz Monzonite; White Tank Quartz Monzonite; Vermont Quartz Diorite; Cadiz Valley Batholith; Barcroft Granodiorite; Bass Lake Tonalite; Big Baldy Granite; Boundary Peak Granite; Bridalveil Granite; Burnside Lake Adamellite; Cabin Granodiorite; Cactus Point Granite; Carson Pass Tonalite; Cathedral Peak Granite; Clover Creek Granodiorite; Cottonwood Adamellite; Cow Creek Granodiorite; Dinkey Creek Granodiorite; Ebbetts Pass Granodiorite; El Capitan Granite; Evolution Basin Alaskite; Giant Forest Granodiorite; Half Dome Quartz Monzonite; Hunter Mountain Quartz Monzonite; Inconsolable Granodiorite; Isabella Granodiorite; Johnson Granite Porphyry; Knowles Granodiorite; Lake Edison Granodiorite; Lamarck Granodiorite; Leaning Tower Quartz Monzonite; Lebec Quartz Monzonite; Leidy Adamellite; Lodgepole Granite; Lookout Peak Tonalite; McAfee Adamellite; Mitchell Peak Granodiorite; Mono Creek Granite; Mount Clark Granite; Mount Givens Granodiorite; Pear Lake Quartz Monzonite; Paradise Granodiorite; Pellesier Granite; Pohono Granodiorite; Potwisha Quartz Diorite; Round Valley Peak Granodiorite; Sacatar Quartz Diorite; Sage Hen Adamellite; Sentinel Granodiorite; Stanislaus Meadow Adamellite; Taft Granite; Tamarack Leuco-Adamellite; Tejon Lookout Granite; Tinemaha Granodiorite; Tungsten Hills Quartz Monzonite; Ward Mountain Trondhjemite; Weaver Lake Quartz Monzonite; Wheeler Crest Quartz Monzonite; Whitney Granodiorite. Hunter Mountain Batholith; Inyo Batholith; Sierra Nevada Batholith. Bald Rock Pluton; Bucks Lake Pluton; Bullfrog Pluton; Cartridge Pass Pluton; Cascade Pluton; Dragon Pluton; Grizzly Pluton; Independence Pluton; Merrimac Pluton; Paiute Monument Pluton; Papoose Flat Pluton; Pat Keyes Pluton; Sage Hen Flat Pluton; Santa Rita Flat Pluton; Swedes Flat Pluton; Tuolumne Intrusive Suite; John Muir Intrusive Suite; Shaver Intrusive Suite; Palisade Crest Intrusive Suite; Scheelite Intrusive Suite; Fine Gold Intrusive Suite; Soldier Pass Intrusive Suite; Mount Whitney Intrusive Suite

Description: Mesozoic granite, quartz monzonite, granodiorite, and quartz diorite

Comments: Sierra Nevada, Death Valley area, Transverse Ranges and Mojave Desert. Primarily granodiorite, tonalite, quartz monzonite, and granite ranging in age from Late Triassic to Late Cretaceous. Includes some rocks as old as Permian and possibly a few as young as Tertiary. Three main periods of emplacement (Triassic, Jurassic, and Cretaceous); wide variety of rock types

Lithology: Major:{granodiorite}, Minor:{granite,tonalite,quartz diorite,quartz monzonite}, Incidental:{diorite, quartz syenite, quartz monzodiorite, gabbro, trondhjemite, monzonite, monzodiorite, pegmatite, alaskite, aplite}

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)
Tucker, W. Burling & Reid J. Sampson (1930), Los Angeles field division: California Mining Bureau. Report 26: 267.
Wright, L.A., et al (1953), Mines and mineral resources of San Bernardino County, California: California Journal of Mines and Geology: 49(1-2): tabulated list No. 331: 105.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 339.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 46, 196, 233.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10189073.
U.S. Bureau of Mines, Minerals Availability System (MAS) file #0060710331.

 
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