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Genesis pit, Lynn Mining District, Eureka County, Nevada, USAi
Regional Level Types
Genesis pitPit
Lynn Mining DistrictMining District
Eureka CountyCounty
NevadaState
USACountry

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PhotosMapsSearch
06948910017361146829086.jpg
Conichalcite, etc.

Genesis pit, Lynn Mining District, Eureka County, Nevada, USA
06948910017361146829086.jpg
Conichalcite, etc.

Genesis pit, Lynn Mining District, Eureka County, Nevada, USA
06948910017361146829086.jpg
Conichalcite, etc.

Genesis pit, Lynn Mining District, Eureka County, Nevada, USA
Latitude & Longitude (WGS84):
40° 57' 15'' North , 116° 21' 58'' West
Latitude & Longitude (decimal):
40.95434,-116.36621
GeoHash:
G#: 9rm2bp88q
GRN:
N28W63
Type:
Pit
Köppen climate type:
BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Carlin2,302 (2017)34.7km
Mindat Locality ID:
63602
Long-form identifier:
mindat:1:2:63602:0
GUID (UUID V4):
0


Structure: Genesis Mine Is Located Along An Antiformal Axis South Of The Goldstrike Intrusion At The Northern Edge Of The Lynn Window. The Antiform Trends Nw And Plunges 10 Degrees To The Nw. The West Limb Dips 30-40 Degrees West And The East Limb Dips 65-70 Degrees East. Genesis Mine Occurs On The Tuscarora Spur Horst Block. The Sediments Have Been Folded And Cut By Steeply Dipping Normal And Strike Slip Faults. Faulting Has Three Trends: N20-35w, N30-45e, And E-W. The E-W Trending Faults Appear To Be The Oldest.

Alteration: See Comments

Commodity: Au is found within the lattices of montmorillonite and kaolinite clays that principally occur along the fractures and joints in relatively unaltered limestone.

Deposit: Au mineralization occurs in two different zones at genesis, the main zone and the west zone. The main ore zone is proximal to the intersection of the gen and k faults within the popovich formation. The west zone is stratigraphically controlled by calcareous siltstone, mudstone, and argillite of the rodeo creek unit. Deposit form, strike, and dip given above are for the west zone.

Deposit type: Carbonate-hosted Au-Ag

Development: In 1984, geologists of carlin gold mining company (predecessor to newmont gold company) mapped and sampled an area northeast of the blue star mine. Based on the results from rock chip samples and the similarities of lithologies and structures in that area to those seen at blue star, an exploration drilling program was initiated. The eighth hole of the program intersected 60 ft./0.102 opt au. Shallo W drilling in early 1985 delineated the near surface portion of the orebody. Deep drilling (depths of 400-800 ft.) commenced in early 1985 and was completed in late 1986. By 1986, drilling had delineated 13.6 million tons/0.094 opt au. Open pit mining of the genesis orebody began in may 1986.

Geology: Porphyritic igneous dikes have been intruded in the vicinity of the genesis deposit, including along the k fault. Argillic/sericitic alteration of the dikes is extreme. These dikes are believed to be related to the 156 ma goldstrike granodioritic stock, but degree of alteration hinders age dating.

Rock formation(s): Goldstrike Granodioritic Stock;Altered Dikes Of Uncertain Composition
Popovich Formation;Rodeo Creek Unit


Ore(s): The Gen Fault Served As The Main Feeder Zone For Hydrothermal Fluids. The Orebody Is Localized In The Footwall Of Both The N10w Trending Gen Fault And The N15-35e Trending K Fault, With Highest Grade Ore Occurring Near The Intersection Of These Two Faults.

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Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

10 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

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Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Conichalcite
Formula: CaCu(AsO4)(OH)
ⓘ Halloysite
Formula: Al2(Si2O5)(OH)4
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
ⓘ Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Native Gold
Formula: Au
ⓘ Olivenite
Formula: Cu2(AsO4)(OH)
ⓘ Quartz
Formula: SiO2
ⓘ 'Smectite Group'
Formula: A0.3D2-3[T4O10]Z2 · nH2O
ⓘ Variscite
Formula: AlPO4 · 2H2O
ⓘ Vivianite
Formula: Fe2+Fe2+2(PO4)2 · 8H2O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 8 - Phosphates, Arsenates and Vanadates
ⓘOlivenite8.BB.30Cu2(AsO4)(OH)
ⓘConichalcite8.BH.35CaCu(AsO4)(OH)
ⓘVariscite8.CD.10AlPO4 · 2H2O
ⓘVivianite8.CE.40Fe2+Fe2+2(PO4)2 · 8H2O
Group 9 - Silicates
ⓘMuscovite
var. Illite		9.EC.15K0.65Al2.0[Al0.65Si3.35O10](OH)2
ⓘ9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘMontmorillonite9.EC.40(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
ⓘHalloysite9.ED.10Al2(Si2O5)(OH)4
Unclassified
ⓘ'Smectite Group'-A0.3D2-3[T4O10]Z2 · nH2O

List of minerals for each chemical element

HHydrogen
Hⓘ ConichalciteCaCu(AsO4)(OH)
Hⓘ HalloysiteAl2(Si2O5)(OH)4
Hⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Hⓘ OliveniteCu2(AsO4)(OH)
Hⓘ VarisciteAlPO4 · 2H2O
Hⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Hⓘ Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
OOxygen
Oⓘ ConichalciteCaCu(AsO4)(OH)
Oⓘ HalloysiteAl2(Si2O5)(OH)4
Oⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Oⓘ OliveniteCu2(AsO4)(OH)
Oⓘ QuartzSiO2
Oⓘ VarisciteAlPO4 · 2H2O
Oⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Oⓘ Smectite GroupA0.3D2-3[T4O10]Z2 · nH2O
NaSodium
Naⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
MgMagnesium
Mgⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
AlAluminium
Alⓘ HalloysiteAl2(Si2O5)(OH)4
Alⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Alⓘ VarisciteAlPO4 · 2H2O
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ HalloysiteAl2(Si2O5)(OH)4
Siⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Siⓘ KaoliniteAl2(Si2O5)(OH)4
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Siⓘ QuartzSiO2
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
PPhosphorus
Pⓘ VarisciteAlPO4 · 2H2O
Pⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
KPotassium
Kⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ ConichalciteCaCu(AsO4)(OH)
Caⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
FeIron
Feⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
CuCopper
Cuⓘ ConichalciteCaCu(AsO4)(OH)
Cuⓘ OliveniteCu2(AsO4)(OH)
AsArsenic
Asⓘ ConichalciteCaCu(AsO4)(OH)
Asⓘ OliveniteCu2(AsO4)(OH)
AuGold
Auⓘ Native GoldAu

Other Databases

Link to USGS MRDS:10107443

Localities in this Region

USA

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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.

References

Christensen, O. D., Knutsen, G. C., and Ekburg, C. E., (1987), Disseminated Gold Deposits of the Carlin Trend, Eureka and Elko Counties, Nevada: Society of Mining Engineers Preprint Number 87-84, 7 P.
Shepherd, T.L., (1987), Generalized Geology of the Genesis Deposit, Geological Society of Nevada 1987 Fall Field Trip Guidebook, Special Publication No. 6, P. D1-d4.
Rocky Mountain Pay Dirt, June, (1988), p. 3a.
Ryneer, R., (1990), Geology of the Blue Star Subdistrict and the Genesis Mine, Eureka County, Nevada [abs]: Geology and Ore Deposits of the Great Basin, Reno/sparks, Nevada, (1990), Program with Abstracts, P. 67.
Ryneer, R., (1992), Economic History of the Carlin Trend, in Buffa, R., and Coyner, A., Eds., Geology and Ore Deposits of the Great Basin-field Trip Guidebook Compendium, the Geological Society of Nevada, Reno, P. 838-840.
Jordan, J., (1992), the Blue Star and Genesis Gold Deposits, in Buffa, R., and Coyner, A., Eds., Geology and Ore Deposits of the Great Basin-field Trip Guidebook Compendium, the Geological Society of Nevada, Reno, P. 859-861.
NBMG, (1994), MI-1993
Economic Geology (1996) 91:1383-1393
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