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Kramer Hill Mine, Golconda Mining District, Humboldt County, Nevada, USAi
Regional Level Types
Kramer Hill MineMine
Golconda Mining DistrictMining District
Humboldt CountyCounty
NevadaState
USACountry

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Latitude & Longitude (WGS84):
40° 55' 34'' North , 117° 30' 9'' West
Latitude & Longitude (decimal):
40.92628,-117.50263
GeoHash:
G#: 9rk2y4mhy
GRN:
N28W64
Type:
Mine
Köppen climate type:
BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Golconda214 (2011)3.2km
Winnemucca7,887 (2017)20.2km
Mindat Locality ID:
429856
Long-form identifier:
mindat:1:2:429856:7
GUID (UUID V4):
0
Other/historical names associated with this locality:
Golconda Gold Ledge Mining Company


Alteration: Silicification And Argillization. Both The Fault And Hanging Wall Fracture Zone Are Silicified. The Shaley Rocks Of The Hanging Wall Fracture Zone Are Strongly Argillized. The Clays Produced By Argillization Are Kaolinite, Dickite, Illite(?), And An Unidentified Expanding Variety.

Commodity: A scanning electron microprobe analysis of vein material reveals the presence of pyrite, arsenic-bearing pyrite, arsenopyrite, galena, sphalerite, chalcopyrite, a lead antimony sulfide, and cinnabar. Also observed in the SEM analysis was a 25 micron grain of gold occurring in an iron oxide filled fracture in pyrite.

Deposit: ; model name could also be: sediment-hosted au.

Deposit type: Distal disseminated Ag-Au

Development: Eight claims were staked on the property in 1907 by l.k. Kramer. Two claims were patented in 1909 by the golconda ledge mining co. Ore was produced from underground workings and processed in golconda, and later, a 20 stamp mill was constructed on the site. Approximately 25,000-30,000 tons of ore were processed. Work by cordex in the early 1970's consisted of geologic mapping, underground chip and channel sampling, bulldozer trenching, and three drill programs totalling 18 rotary percussion holes. Cordex identified a modest tonnage of 0.19 opt gold along the main vein. Lower grade disseminated ore was not attractive at this time and the property was dropped. The property was reacquired by pinson mining co. In 1986. A program to develop the lower grade disseminated ore was then initiated.

Geology: Kretschmer notes that the style of mineralization is something like a hybrid between an epithermal vein and a carlin-type deposit. This deposit does not fit particularly well into any of the USGS model categories, but seems to be closest to #26a.

Rock formation(s): Twin Canyon Mbr. Of Osgood Mt. Qtzt


Ore(s): See Comments

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

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

12 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:

ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Calcite
Formula: CaCO3
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Cinnabar
Formula: HgS
ⓘ 'Clay minerals'
ⓘ Dickite
Formula: Al2(Si2O5)(OH)4
ⓘ Galena
Formula: PbS
ⓘ Gold
Formula: Au
ⓘ 'Iron oxide'
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrite var. Arsenic-bearing Pyrite
Formula: Fe(S,As)2
ⓘ Quartz
Formula: SiO2
ⓘ Sphalerite
Formula: ZnS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘGold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘCinnabar2.CD.15aHgS
ⓘPyrite2.EB.05aFeS2
ⓘvar. Arsenic-bearing Pyrite2.EB.05aFe(S,As)2
ⓘArsenopyrite2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 9 - Silicates
ⓘMuscovite
var. Illite		9.EC.15K0.65Al2.0[Al0.65Si3.35O10](OH)2
ⓘ9.EC.15KAl2(AlSi3O10)(OH)2
ⓘDickite9.ED.05Al2(Si2O5)(OH)4
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
Unclassified
ⓘ'Clay minerals'-
ⓘ'Iron oxide'-

List of minerals for each chemical element

HHydrogen
Hⓘ DickiteAl2(Si2O5)(OH)4
Hⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ CalciteCaCO3
Oⓘ DickiteAl2(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ⓘ QuartzSiO2
AlAluminium
Alⓘ DickiteAl2(Si2O5)(OH)4
Alⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ DickiteAl2(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ⓘ QuartzSiO2
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ ChalcopyriteCuFeS2
Sⓘ CinnabarHgS
Sⓘ GalenaPbS
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
Sⓘ Pyrite var. Arsenic-bearing PyriteFe(S,As)2
KPotassium
Kⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ CalciteCaCO3
FeIron
Feⓘ ArsenopyriteFeAsS
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
Feⓘ Pyrite var. Arsenic-bearing PyriteFe(S,As)2
CuCopper
Cuⓘ ChalcopyriteCuFeS2
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ ArsenopyriteFeAsS
Asⓘ Pyrite var. Arsenic-bearing PyriteFe(S,As)2
AuGold
Auⓘ GoldAu
HgMercury
Hgⓘ CinnabarHgS
PbLead
Pbⓘ GalenaPbS

Other Databases

Link to USGS MRDS:10043952

Localities in this Region

USA
  • Nevada
    • Humboldt County
      • Golconda Mining District

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America Plate

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

Vanderburg, W.O., (1938), Reconnaissance of Mining Districts in Humboldt Co., Nev: USBM I.C.6995
Kretschmer, E.L., (1991), Geology of the Kramer Hill Gold Deposit, Humboldt County, Nevada, in Raines, G.L., Et Al, Eds., Geology and Ore Deposits of the Great Basin, the Geological Society of Nevada, Reno, P. 857-863.
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