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Merritt tunnel, Ruby Hill, Eureka District, Eureka Co., Nevada, USA

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Latitude & Longitude (WGS84): 39° 29' 2'' North , 115° 58' 42'' West
Latitude & Longitude (decimal): 39.48410,-115.97840
GeoHash:G#: 9rj88gg5e
Locality type:Tunnel
Köppen climate type:BSk : Cold semi-arid (steppe) climate


Deposit: Gold ore is localized by brecciated zones in dolomite located in lower NE W york canyon which was the site of the initial discovery in the district. E. Affranchino of eureka, did some work on the tunnel in the early 60's, but the relatively small amounts of gold-rich ore appear to be unlike the Ag-Pb ore found elsewhere (nolan 1962) ; info.src : 1 pub lit

Development: E. Affranchino did some work on the tunnel in the early 1960's but the small amounts of gold ore are unlike the Pb-Ag ore common to the district

Geology: Cold ore occurs in brecciated dolomite

Rock formation(s): Hansen Creek Dolomite


Ore(s): Fractured Permeable Zones

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Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List

 No mineral species recorded.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ 'Dolostone'
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
ⓘ 'commodity:Gold'
Formula: Au
Reference:  

List of minerals arranged by Strunz 10th Edition classification

Unclassified Minerals, Rocks, etc.
ⓘ'Dolostone'-

List of minerals arranged by Dana 8th Edition classification

Unclassified Minerals, Rocks, etc.
ⓘ'Dolostone'-

List of minerals for each chemical element

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]

Middle Ordovician - Furongian
458.4 - 497 Ma



ID: 2995364
Carbonate Shelf Sequence - Limestone, dolomite, and quartzite

Age: Paleozoic (458.4 - 497 Ma)

Stratigraphic Name: Pogonip Group; Ely Springs Dolomite; Eureka Quartzite

Description: Carbonate platform rocks are present in Nye, Lincoln, Elko, Eureka, Lander, White Pine, Esmeralda, and Clark Counties. This unit is primarily Ordovician in age but does include Upper Cambrian rocks at the base (Page, Lundstrom, and others, 2005). The Pogonip Group, including the Antelope Valley Limestone is the most common name used. In Clark County it also includes the Ely Springs Dolomite, and includes the Eureka Quartzite in White Pine and Clark Counties. Unit OCc corresponds to depositional sequence 2 of Cook and Corboy (2004). Where Ocq is mapped separately, it overlies OCc. Otherwise OCc is depositional under SOc, or in southern Nye and Clark Counties, it is overlain directly by DSc where SOc is not differentiated. Unit OCc depositionally overlies unit Cc.

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:{limestone,dolostone,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.
 
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