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Knob Hill Mine, Republic Mining District, Ferry County, Washington, USAi
Regional Level Types
Knob Hill MineMine
Republic Mining DistrictMining District
Ferry CountyCounty
WashingtonState
USACountry

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PhotosMapsSearch
01601080014946837929293.jpg
Knob Hill Mine and Mill

Knob Hill Mine, Republic Mining District, Ferry County, Washington, USA
06097080017124273129179.jpg
Mine Site

Knob Hill Mine, Republic Mining District, Ferry County, Washington, USA
06115420014947036023496.jpg
Pyrite

Knob Hill Mine, Republic Mining District, Ferry County, Washington, USA
01601080014946837929293.jpg
Knob Hill Mine and Mill

Knob Hill Mine, Republic Mining District, Ferry County, Washington, USA
00620790017102742151150.jpg
Mine Site

Knob Hill Mine, Republic Mining District, Ferry County, Washington, USA
03887980014964879729492.jpg
Pyrite

Knob Hill Mine, Republic Mining District, Ferry County, Washington, USA
01601080014946837929293.jpg
Knob Hill Mine and Mill

Knob Hill Mine, Republic Mining District, Ferry County, Washington, USA
06097080017124273129179.jpg
Mine Site

Knob Hill Mine, Republic Mining District, Ferry County, Washington, USA
Latitude & Longitude (WGS84):
48° 40' 23'' North , 118° 45' 27'' West
Latitude & Longitude (decimal):
48.67333,-118.75777
GeoHash:
G#: c2escsenx
GRN:
N33W57
Type:
Mine
KΓΆppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Republic1,072 (2017)3.2km
Curlew118 (2011)26.3km
Sion658 (2019)42.8km
Grand Forks4,208 (2008)46.4km
Mindat Locality ID:
15041
Long-form identifier:
mindat:1:2:15041:4
GUID (UUID V4):
ba7d2cfe-9253-432d-875b-ab20e13219e4
Other/historical names associated with this locality:
Golden Promise Mine; Day Mine


West 1/2 of the Southeast 1/4 of section 27, T37N-R32E.

A Au-Ag mine located at the Head of Eureka Gulch. It worked 4 parallel epithermal veins and a cross vein with widths from 5'-15' in Eocene volcanics of the Klondike Mountain Formation.

Developments include a 1,200' shaft with 9 levels at 110' intervals, The golden promise shaft, adjoining rad tunnel connecting the two mines, and abandoned open pits.

The mine produced more then $10,000,000 by the end of 1951, on June 24, 1989 the Hecla mining company produced the 2,000,000th ounce of gold from the Hecla 2 shaft.

Production records up to 1985 list the mine as producing just over 3,200,000 tons of ore.

Note: There is some confusion with this mine in Cannon (1975). Cannon lists "Day Mine" as a distinct mine. However, thorough research fails to show a "Day Mine" but Day Mines was a company that operated the Knob Hill among other mines. None of the other mines operated by the company have sylvanite described, so it is fair to say that Cannon duplicated the Knob Hill Mine as the "Day Mine".

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List


28 valid minerals.

Detailed Mineral List:

β“˜ Acanthite
Formula: Ag2S
Habit: fine grained disseminations
β“˜ Aguilarite
Formula: Ag4SeS
Description: lined a single large vug with stephanite
β“˜ Arsenopyrite
Formula: FeAsS
β“˜ Baryte
Formula: BaSO4
β“˜ Calaverite
Formula: AuTe2
Habit: fine grained disseminations
β“˜ Calcite
Formula: CaCO3
β“˜ Chalcopyrite
Formula: CuFeS2
β“˜ 'Freibergite Subgroup'
Formula: (Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1
β“˜ Gold
Formula: Au
β“˜ Gold var. Electrum
Formula: (Au,Ag)
β“˜ Graphite
Formula: C
β“˜ Jalpaite
Formula: Ag3CuS2
β“˜ 'K Feldspar'
β“˜ 'K Feldspar var. Adularia'
Formula: KAlSi3O8
β“˜ Marcasite
Formula: FeS2
β“˜ Miargyrite
Formula: AgSbS2
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Naumannite
Formula: Ag2Se
β“˜ Orthoclase
Formula: K(AlSi3O8)
β“˜ Polybasite
Formula: [Ag6Sb2S7][Ag9CuS4]
β“˜ Proustite
Formula: Ag3AsS3
β“˜ Pyrargyrite
Formula: Ag3SbS3
β“˜ Pyrite
Formula: FeS2
β“˜ Quartz
Formula: SiO2
β“˜ Quartz var. Chalcedony
Formula: SiO2
β“˜ Realgar
Formula: As4S4
β“˜ Selenopolybasite
Formula: [(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
β“˜ Siderite
Formula: FeCO3
β“˜ Stephanite
Formula: Ag5SbS4
β“˜ Stibnite
Formula: Sb2S3
β“˜ Sylvanite
Formula: AgAuTe4
β“˜ 'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S
β“˜ Umangite
Formula: Cu3Se2
β“˜ Uytenbogaardtite
Formula: Ag3AuS2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Gold
var. Electrum		1.AA.05(Au,Ag)
β“˜1.AA.05Au
β“˜Graphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
β“˜Umangite2.BA.25Cu3Se2
β“˜Acanthite2.BA.35Ag2S
β“˜Jalpaite2.BA.45Ag3CuS2
β“˜Naumannite2.BA.55Ag2Se
β“˜Aguilarite2.BA.55Ag4SeS
β“˜Uytenbogaardtite2.BA.75Ag3AuS2
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Stibnite2.DB.05Sb2S3
β“˜Sylvanite2.EA.05AgAuTe4
β“˜Calaverite2.EA.10AuTe2
β“˜Pyrite2.EB.05aFeS2
β“˜Marcasite2.EB.10aFeS2
β“˜Arsenopyrite2.EB.20FeAsS
β“˜Realgar2.FA.15aAs4S4
β“˜Proustite2.GA.05Ag3AsS3
β“˜Pyrargyrite2.GA.05Ag3SbS3
β“˜'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
β“˜'Freibergite Subgroup'2.GB.05(Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1
β“˜Stephanite2.GB.10Ag5SbS4
β“˜Polybasite2.GB.15[Ag6Sb2S7][Ag9CuS4]
β“˜Selenopolybasite2.GB.15[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
β“˜Miargyrite2.HA.10AgSbS2
Group 4 - Oxides and Hydroxides
β“˜Quartz
var. Chalcedony		4.DA.05SiO2
β“˜4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Siderite5.AB.05FeCO3
β“˜Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Baryte7.AD.35BaSO4
Group 9 - Silicates
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Orthoclase9.FA.30K(AlSi3O8)
Unclassified
β“˜'K Feldspar
var. Adularia'		-KAlSi3O8
β“˜''-

List of minerals for each chemical element

HHydrogen
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CCarbon
Cβ“˜ CalciteCaCO3
Cβ“˜ GraphiteC
Cβ“˜ SideriteFeCO3
OOxygen
Oβ“˜ K Feldspar var. AdulariaKAlSi3O8
Oβ“˜ BaryteBaSO4
Oβ“˜ CalciteCaCO3
Oβ“˜ Quartz var. ChalcedonySiO2
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ OrthoclaseK(AlSi3O8)
Oβ“˜ QuartzSiO2
Oβ“˜ SideriteFeCO3
Oβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
AlAluminium
Alβ“˜ K Feldspar var. AdulariaKAlSi3O8
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ OrthoclaseK(AlSi3O8)
Alβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siβ“˜ K Feldspar var. AdulariaKAlSi3O8
Siβ“˜ Quartz var. ChalcedonySiO2
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ OrthoclaseK(AlSi3O8)
Siβ“˜ QuartzSiO2
Siβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SSulfur
Sβ“˜ AcanthiteAg2S
Sβ“˜ AguilariteAg4SeS
Sβ“˜ ArsenopyriteFeAsS
Sβ“˜ BaryteBaSO4
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Sβ“˜ JalpaiteAg3CuS2
Sβ“˜ MarcasiteFeS2
Sβ“˜ MiargyriteAgSbS2
Sβ“˜ Polybasite[Ag6Sb2S7][Ag9CuS4]
Sβ“˜ ProustiteAg3AsS3
Sβ“˜ PyrargyriteAg3SbS3
Sβ“˜ PyriteFeS2
Sβ“˜ RealgarAs4S4
Sβ“˜ StephaniteAg5SbS4
Sβ“˜ StibniteSb2S3
Sβ“˜ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
Sβ“˜ UytenbogaardtiteAg3AuS2
Sβ“˜ Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
KPotassium
Kβ“˜ K Feldspar var. AdulariaKAlSi3O8
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ OrthoclaseK(AlSi3O8)
Kβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ CalciteCaCO3
FeIron
Feβ“˜ ArsenopyriteFeAsS
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ MarcasiteFeS2
Feβ“˜ PyriteFeS2
Feβ“˜ SideriteFeCO3
CuCopper
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Cuβ“˜ JalpaiteAg3CuS2
Cuβ“˜ Polybasite[Ag6Sb2S7][Ag9CuS4]
Cuβ“˜ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
Cuβ“˜ UmangiteCu3Se2
Cuβ“˜ Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
AsArsenic
Asβ“˜ ArsenopyriteFeAsS
Asβ“˜ ProustiteAg3AsS3
Asβ“˜ RealgarAs4S4
Asβ“˜ Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
SeSelenium
Seβ“˜ AguilariteAg4SeS
Seβ“˜ NaumanniteAg2Se
Seβ“˜ UmangiteCu3Se2
Seβ“˜ Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
AgSilver
Agβ“˜ AcanthiteAg2S
Agβ“˜ AguilariteAg4SeS
Agβ“˜ Gold var. Electrum(Au,Ag)
Agβ“˜ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Agβ“˜ JalpaiteAg3CuS2
Agβ“˜ MiargyriteAgSbS2
Agβ“˜ NaumanniteAg2Se
Agβ“˜ Polybasite[Ag6Sb2S7][Ag9CuS4]
Agβ“˜ ProustiteAg3AsS3
Agβ“˜ PyrargyriteAg3SbS3
Agβ“˜ StephaniteAg5SbS4
Agβ“˜ SylvaniteAgAuTe4
Agβ“˜ UytenbogaardtiteAg3AuS2
Agβ“˜ Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
SbAntimony
Sbβ“˜ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Sbβ“˜ MiargyriteAgSbS2
Sbβ“˜ Polybasite[Ag6Sb2S7][Ag9CuS4]
Sbβ“˜ PyrargyriteAg3SbS3
Sbβ“˜ StephaniteAg5SbS4
Sbβ“˜ StibniteSb2S3
Sbβ“˜ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
Sbβ“˜ Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
TeTellurium
Teβ“˜ CalaveriteAuTe2
Teβ“˜ SylvaniteAgAuTe4
BaBarium
Baβ“˜ BaryteBaSO4
AuGold
Auβ“˜ CalaveriteAuTe2
Auβ“˜ Gold var. Electrum(Au,Ag)
Auβ“˜ GoldAu
Auβ“˜ SylvaniteAgAuTe4
Auβ“˜ UytenbogaardtiteAg3AuS2

Other Regions, Features and Areas containing this locality

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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

Wolf, F. E., McKay, D. T., Norman, D. K. (2010) Inactive and Abandoned Mine Lands - Republic Mining District, Ferry county, Washington. Washington State Department of Natural Resources Information Circular 110,a 47 pages
Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.p.121
Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA.pages 35, 37, 64, 95, 131, 136, 138, 161, 166, 174
Derkey, Robert E., Joseph, Nancy L., Lasmanis, Raymond (1990, November) Metal Mines of Washington - Preliminary Report. Open File Report 90-18. Washington Division of Geology and Earth Resources
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