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Jumbo Extension mine, Goldfield District, Esmeralda Co., Nevada, USA

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Key
Lock Map
Latitude & Longitude (WGS84): 37° 43' 5'' North , 117° 13' 6'' West
Latitude & Longitude (decimal): 37.71828,-117.21841
GeoHash:G#: 9qswsdkhv
Locality type:Mine
Köppen climate type:BWk : Cold desert climate


Alteration: Pyritization, Alunitization, Kaolinization

Deposit: One ore body actually filled a small erosional gully in shale underly volcanics at 1750. Ft level

Deposit type: Epithermal quartz-alunite Au

Development: Velvet claim was sending small shipments of gold ore by late 1904. The velvet was acquired by the jumbo ext. Mine co. In 1914 from the adjoining goldfield merger mines co. Merger had done exploratory work to 1772 ft, the deepest in the district (in 1911). Jumbo ext. Then found rich ore on the velvet in 1914-15. It was involved in litigation in 1915.

Ore(s): Caldera Ring Fracture Zone

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


13 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:

Alunite
Formula: KAl3(SO4)2(OH)6
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Andesite'
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'commodity:Bismuth'
Formula: Bi
Reference:  
Bismuthinite
Formula: Bi2S3
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Chalcopyrite
Formula: CuFeS2
Reference: NBMG Spec Pub 31 Minerals of Nevada
'commodity:Copper'
Formula: Cu
Reference:  
Famatinite
Formula: Cu3SbS4
Reference: NBMG Spec. Pub. 31 Minerals of Nevada; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Gold
Formula: Au
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
'commodity:Gold'
Formula: Au
Reference:  
Goldfieldite
Formula: Cu10Te4S13
Reference: Donald Cooke
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Krennerite ?
Formula: Au3AgTe8
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
'Latite'
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Marcasite
Formula: FeS2
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Pyrite
Formula: FeS2
Reference: NBMG Spec. Pub. 31 Minerals of Nevada; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Quartz
Formula: SiO2
Reference: NBMG Spec. Pub. 31 Minerals of Nevada; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'commodity:Silver'
Formula: Ag
Reference:  
Sphalerite
Formula: ZnS
Reference: NBMG Spec Pub 31 Minerals of Nevada
Tetrahedrite
Formula: Cu6[Cu4(Fe,Zn)2]Sb4S13
Reference: NBMG Spec Pub 31 Minerals of Nevada
'commodity:Tin'
Formula: Sn
Reference:  

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Gold'1.AA.05Au
Group 2 - Sulphides and Sulfosalts
'Bismuthinite'2.DB.05Bi2S3
'Chalcopyrite'2.CB.10aCuFeS2
'Famatinite'2.KA.10Cu3SbS4
'Goldfieldite'2.GB.05Cu10Te4S13
'Krennerite' ?2.EA.15Au3AgTe8
'Marcasite'2.EB.10aFeS2
'Pyrite'2.EB.05aFeS2
'Sphalerite'2.CB.05aZnS
'Tetrahedrite'2.GB.05Cu6[Cu4(Fe,Zn)2]Sb4S13
Group 4 - Oxides and Hydroxides
'Quartz'4.DA.05SiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Alunite'7.BC.10KAl3(SO4)2(OH)6
Group 9 - Silicates
'Kaolinite'9.ED.05Al2(Si2O5)(OH)4
Unclassified Minerals, Rocks, etc.
'Andesite'-
'Latite'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 2:3
Bismuthinite2.11.2.3Bi2S3
AmBnXp, with (m+n):p = 1:2
Krennerite ?2.12.13.1Au3AgTe8
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
ø = 4
Famatinite3.2.2.2Cu3SbS4
3 <ø < 4
Goldfieldite3.3.6.6Cu10Te4S13
Tetrahedrite3.3.6.1Cu6[Cu4(Fe,Zn)2]Sb4S13
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Alunite30.2.4.1KAl3(SO4)2(OH)6
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Andesite'-
Kaolinite-Al2(Si2O5)(OH)4
'Latite'-

List of minerals for each chemical element

HHydrogen
H AluniteKAl3(SO4)2(OH)6
H KaoliniteAl2(Si2O5)(OH)4
OOxygen
O AluniteKAl3(SO4)2(OH)6
O KaoliniteAl2(Si2O5)(OH)4
O QuartzSiO2
AlAluminium
Al AluniteKAl3(SO4)2(OH)6
Al KaoliniteAl2(Si2O5)(OH)4
SiSilicon
Si KaoliniteAl2(Si2O5)(OH)4
Si QuartzSiO2
SSulfur
S AluniteKAl3(SO4)2(OH)6
S BismuthiniteBi2S3
S ChalcopyriteCuFeS2
S FamatiniteCu3SbS4
S GoldfielditeCu10Te4S13
S MarcasiteFeS2
S PyriteFeS2
S SphaleriteZnS
S TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
KPotassium
K AluniteKAl3(SO4)2(OH)6
FeIron
Fe ChalcopyriteCuFeS2
Fe MarcasiteFeS2
Fe PyriteFeS2
Fe TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
CuCopper
Cu ChalcopyriteCuFeS2
Cu FamatiniteCu3SbS4
Cu GoldfielditeCu10Te4S13
Cu TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
ZnZinc
Zn SphaleriteZnS
Zn TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
AgSilver
Ag KrenneriteAu3AgTe8
SbAntimony
Sb FamatiniteCu3SbS4
Sb TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
TeTellurium
Te GoldfielditeCu10Te4S13
Te KrenneriteAu3AgTe8
AuGold
Au GoldAu
Au KrenneriteAu3AgTe8
BiBismuth
Bi BismuthiniteBi2S3

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

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Shamberger, H.A., (1982), the Story of Goldfield; Nevada Historical Press, Carson City, Nevada, 240 P.


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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