California Mine - Dash Pit (Dash pit; East Dash; California Mountain Deposit), Independence Mountains District, Elko Co., Nevada, USAi
Regional Level Types | |
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California Mine - Dash Pit (Dash pit; East Dash; California Mountain Deposit) | - not defined - |
Independence Mountains District | Mining District |
Elko Co. | County |
Nevada | State |
USA | Country |
Latitude & Longitude (WGS84): | 41° 22' 25'' North , 115° 57' 13'' West |
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Latitude & Longitude (decimal): | 41.37379,-115.95377 |
GeoHash: | G#: 9rme37v5c |
USGS MRDS Record: | 10310526 |
Köppen climate type: | BSk : Cold semi-arid (steppe) climate |
Commodity: Ore Materials: gold
Deposit: Jerritt Canyon deposits are Carlin-type replacement gold occurrences hosted by calcareous Paleozoic marine sediments. Tectonic and volcanic activity has led to complex faulting and folding which have created favourable sites for gold mineralization.
Deposit type: Sediment-hosted Au
Development: Part of the Jerritt Canyon Joint Venture (AngloGold, Ltd, 70%; Meridian Gold Co., 30%) (2001) Reserves: 2.4 million tonnes @ 8.86 g/t (attributable) 0.7 million oz Resources: 7.1 million tonnes @ 9.23 g/t (attributable) for 2.1 million oz The deposit was in production in 1997 and was an active Mine in 2001. Dash began production Apr 1997
Regions containing this locality
North America Plate | Tectonic Plate |
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Standard Detailed Strunz Dana Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
1 valid mineral.
Rock Types Recorded
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Alphabetical List Tree DiagramDetailed Mineral List:
ⓘ Gold Formula: Au Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
List of minerals arranged by Dana 8th Edition classification
Group 1 - NATIVE ELEMENTS AND ALLOYS | |||
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Metals, other than the Platinum Group | |||
ⓘ | Gold | 1.1.1.1 | Au |
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] |
Llandovery - Middle Ordovician 433.4 - 470 Ma ID: 2787745 | Carbonate Shelf Sequence - Dolomite, limestone, and shale Age: Paleozoic (433.4 - 470 Ma) Stratigraphic Name: Ely Springs Dolomite; Hanson Creek Formation Description: Ely Springs Dolomite and Hanson Creek Formation are the main formations included in this unit. Many of the rocks in this unit are not assigned to a formation. A large section of the carbonate platform from Early Devonian through latest Ordovician time is represented by dolomitic rocks. They commonly look similar, have poor biostratigraphic control, and thus are not always well differentiated on the county maps. Additionally, not all of the dolomite is primary, and thus boundaries between secondary dolomite and other rock units have been misinterpreted as primary stratigraphic boundaries, further confusing the stratigraphy of the lower Paleozoic shelf (Nichols and Silberling, 1977a). Rocks in this unit correspond to sequence 4 of Cook and Corboy (2004). This unit includes rocks deposited immediately above the Eureka Quartzite, but disconformably below the Lone Mountain and Laketown Dolomites, hence it includes the Silurian and uppermost Ordovician. Rocks included in unit SOc that are mapped as the Hanson Creek Formation are depositionally overlain by the Roberts Mountains Formation of unit DSt in the northern and western part of the exposure area. The SOc rocks mapped as Hanson Creek Formation are difficult to distinguish from units DSt and DOts, and should more appropriately be included in unit DOts, but inconsistent mapping makes this difficult. In general unit SOc is not differentiated from unit OCc in Clark County, and thus unit DSc lies directly on unit OCc. In Lincoln and Nye Counties unit SOc lies directly on the Eureka Quartzite (Ocq) and is overlain by the Laketown Dolomite (DSc). In southern Nye County, rocks mapped as Ely Springs Formation are grouped with the Eureka Quartzite as unit Ocq. In White Pine and eastern Elko Counties, the Eureka Quartzite is not mapped separately, and unit SOc therefore lies directly on unit OCc, which includes the quartzite. Also in White Pine and eastern Elko Counties, unit DSc is not differentiated from unit SOc, so SOc is overlain directly by unit Dcd. In the northern and western areas of exposure where unit SOc is mapped as Hanson Creek Formation it is overlain depositionally by unit DSt of the Slope assemblage. 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:{dolostone,limestone,shale} 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