Claims: Jumbo; Mohawk No. 1 and No. 2; Combination; Combination No. 2 and No. 3; January; February; Hazel Queen; Rustler Fraction; Slim Jim Fraction; Goldwedge; Lucky Boy; Red Top; Grizzly Bear; Clermont; Vinegorone; Miss Jessie; Laguna; Last Chance; Golconda; Wonder; Goldstone; Mammoth; Red Boy.
Commodity: Project 9350 - 01393 alunite resources

Deposit: Pacific gold and uranium inc. In joint venture with noranda exploration inc. Was exploring the main goldfield district in 1980 with 151 drill holes to 100-ft depth which indicated presence of 500,000 tons of ore containing 0.07 oz/ton Au proven reserves. Pacific gold also granted a sublease to another party to reopen the mohawk no. 2 mine which was in initial stages of production in 1980. ; info.src : 1 pub lit; 2 unpub rept; 3 field observ goldfield consolidated main vein. Quartz and alunite make up the innermost of 3 zones of alteration which flank the ore vein system. Ransome (1909) states that alunite occurs in practically all of the morena rhyolite, in the rhyolite around vindicator mountain, in the dacite and andesite of preble mountain, and elsewhere. He was the first to point out the importance of alunite in the alteredrock, amplified by harvey and vitaliano,(1964),and by ashley and albers (1975).

Development: The goldfield consolidated mines co. Was formed mainly by george wingfield and sen. George nixon by buying up controlling interests in most of the major mines of goldfield in late 1906. The goldfield consolidated mill (100 stamps) began operating in 1908 and continued until jan. 1919, accounting for over half the production of the district. The mill was treating 600 tpd in 1909. The mine was idle from 1920 to 1927 when bradsha W inc. Co. Began treating tailings, under lease, continuing until 1940

Geology: Geol.com: unconfirmed reports suggest .5 million tons of .07 oz/ton Au or more.

Ore(s): Caldera Ring Fracture System

Regions containing this locality

North America Plate

Tectonic Plate

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

Neogene 2.588 - 23.03 Ma ID: 3186305

Cenozoic volcanic rocks Age: Neogene (2.588 - 23.03 Ma) Stratigraphic Name: Columbia River Basalt Comments: Columbia Plateau Lithology: Flood basalt(s); mafic volcanic rocks; basalt 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]

Early Miocene - Oligocene 15.97 - 33.9 Ma ID: 2731449

Intermediate andesite and intermediate flows and breccias Age: Cenozoic (15.97 - 33.9 Ma) Stratigraphic Name: Mizpah Trachyte; South Willow Formation; Milltown Andesite Description: Andesite flows and breccias and other related rocks of intermediate composition such as dacite, rhyodacite, quartz latite, and biotite-hornblende porphyries. This unit includes units mapped as the South Willow Formation on the Washoe North map, the Milltown Andesite on the Nye South and Esmeralda County maps, the Mizpah Trachyte on the Nye North map, and other units. It corresponds to unit Ta2 on the 1978 State map. It crops out in all counties except Clark, Eureka, Lyon, Douglas, and Carson. Comments: Original map source: Crafford, A.E.J., 2007, Geologic Map of Nevada: U.S. Geological Survey Data Series 249, 1 CD-ROM, 46 p., 1 plate; Scale 1:250,000. Lithology: Major:{andesite,dacite,quartz latite}, Minor:{trachyte} 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

References

USGS MRDS Record:10104122