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Montezuma prospect, Montezuma District, Esmeralda Co., Nevada, USA

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Latitude & Longitude (WGS84): 37° 40' 15'' North , 117° 24' 18'' West
Latitude & Longitude (decimal): 37.67105,-117.40509
GeoHash:G#: 9qsw23u1z
Locality type:Prospect
Köppen climate type:BWk : Cold desert climate


Sec 17 T3S R41E
Alteration: Silicification Of Tuffs And Lake Beds, Forming A Rib Of Opalite, Hydrothermal

Deposit: Tuffs and lake beds are silicified along hanging wall of fault (cambrian el dorado limestone faulted against miocene volcanogenic sedimentary rocks) to form an opalite rib in which cinnabar is disseminated. Cinnabar also occurs in the unsilicified tuff beds but is most concentrated in the opalite near the faulted contact with the limestone. Cinnabar is found in breccia pipes and in an irregular silicified rubble zone.

Deposit type: Hot-spring Hg

Development: 6 claims, developed by sweeney and mcmillan and various lessees, but not enough ore was found to justify erection of reduction equipment.

Ore(s): Fault Striking N 60 W Dipping 30 S; Brecciated Zone Along Fault

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

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


Mineral List


4 valid minerals.

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:

Cinnabar
Formula: HgS
Reference: NBMG Bull 78 Geology and Mineral Deposits of Esmeralda County, Nevada; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Limestone'
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'commodity:Mercury'
Formula: Hg
Reference:  
Opal
Formula: SiO2 · nH2O
Reference: NBMG Bull 78 Geology and Mineral Deposits of Esmeralda County, Nevada
Pyrite
Formula: FeS2
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Quartz
Formula: SiO2
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Tuff'
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Cinnabar'2.CD.15aHgS
'Pyrite'2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
'Opal'4.DA.10SiO2 · nH2O
'Quartz'4.DA.05SiO2
Unclassified Minerals, Rocks, etc.
'Limestone'-
'Tuff'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Cinnabar2.8.14.1HgS
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Rocks, etc.
'Limestone'-
'Tuff'-

List of minerals for each chemical element

HHydrogen
H OpalSiO2 · nH2O
OOxygen
O OpalSiO2 · nH2O
O QuartzSiO2
SiSilicon
Si OpalSiO2 · nH2O
Si QuartzSiO2
SSulfur
S CinnabarHgS
S PyriteFeS2
FeIron
Fe PyriteFeS2
HgMercury
Hg CinnabarHgS

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 Cambrian - Neoproterozoic
511 - 1000 Ma



ID: 2862815
Crossbedded quartzite, siltstone, and phyllite

Age: Neoproterozoic to Cambrian (511 - 1000 Ma)

Stratigraphic Name: Campito Formation; Deep Spring Formation; Harkless Formation; Poleta Formation; Reed Dolomite; Gold Hill Formation; Osgood Mountain Quartzite; Prospect Mountain Quartzite; Stirling Quartzite; Wood Canyon Formation; Zabriskie Quartzite

Description: These lowermost Cambrian to Precambrian strata are scattered over much of central and eastern Nevada and form the base of the Phanerozoic part of the continental margin stratigraphic section. They include the Campito, Deep Spring, Harkless, and Poleta Formations, and the Reed Dolomite in Esmeralda County; the Gold Hill Formation in northern Nye County; unnamed quartzite and shale in White Pine County; the Osgood Mountain quartzite in Humboldt County; the Prospect Mountain Quartzite in northern Nye, Lincoln, Eureka, and Elko Counties; unnamed quartzite and shale in Lander and Clark counties; and the Stirling Quartzite, Wood Canyon Formation, and Zabriskie Quartzite in southern Nye County. In a number of places, these rocks are depositional on Late Proterozoic unit Zqs. In southernmost Clark County, CZq is lying unconformably directly on Early Proterozoic gneiss (Xm). In the east-central part of Nevada, CZq is overlain depositionally by Cambrian carbonate (Cc) of the Carbonate shelf sequence. In the Nolan belt, these rocks are depositionally overlain by unit Ctd. In the Osgood Mountains in Humboldt County, Permian and Pennsylvanian rocks of the Siliciclastic overlap assemblage (PIPacl, Pacl) rest unconformably directly on the Osgood Mountain Quartzite.

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:{quartzite,siltstone,phyllite}, Minor:{shale,dolostone}

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


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