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Overlook Mine, Belcher Mining District, Ferry County, Washington, USAi
Regional Level Types
Overlook MineMine
Belcher Mining DistrictMining District
Ferry CountyCounty
WashingtonState
USACountry

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07662650017653428722191.jpg
Overlook Mine

Overlook Mine, Belcher Mining District, Ferry County, Washington, USA
07662650017653428722191.jpg
Overlook Mine

Overlook Mine, Belcher Mining District, Ferry County, Washington, USA
07662650017653428722191.jpg
Overlook Mine

Overlook Mine, Belcher Mining District, Ferry County, Washington, USA
Latitude & Longitude (WGS84):
48° 41' 56'' North , 118° 34' 7'' West
Latitude & Longitude (decimal):
48.69889,-118.56889
GRN:
N33W57
Type:
Mine
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Republic1,072 (2017)13.6km
Curlew118 (2011)20.9km
Orient115 (2011)32.6km
Sion658 (2019)35.8km
Grand Forks4,208 (2008)38.4km
Owned/operated by:
Adamera Minerals
Mindat Locality ID:
21232
Long-form identifier:
mindat:1:2:21232:5
GUID (UUID V4):
0


Tectonics: Eocene Felsic Rocks Intruded Permian-Triassic Metasedimentary And Metavolcanic Rocks Of The Republic Graben (Muessig, 1967, Geol. Map).

Development: Econ.com: the first gold-silver dore was poured (1990) from the jointly operated overlook and kettle mines. Anticipated production for the first year is 110,000 oz.; the majority will be from the overlook deposit (joseph, 1990, p. 20).

Geology: The overlook deposit is in permian-triassic limestone, dolomitic limestone, argillite, and graywacke. The ore bodies lie next to a network of dikes, sills, and intrusive bodies of the scatter creek rhyodacite (muessig, 1967, p. 113)

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


12 valid minerals.

Detailed Mineral List:

ⓘ Calcite
Formula: CaCO3
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Fayalite
Formula: Fe2+2(SiO4)
ⓘ 'Fayalite-Forsterite Series'
ⓘ Greenalite
Formula: (Fe2+,Fe3+)2-3Si2O5(OH)4
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Minnesotaite
Formula: Fe2+3Si4O10(OH)2
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Native Gold
Formula: Au
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Talc
Formula: Mg3Si4O10(OH)2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 9 - Silicates
ⓘFayalite9.AC.05Fe2+2(SiO4)
ⓘMinnesotaite9.EC.05Fe2+3Si4O10(OH)2
ⓘTalc9.EC.05Mg3Si4O10(OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘGreenalite9.ED.15(Fe2+,Fe3+)2-3Si2O5(OH)4
Unclassified
ⓘ'Chlorite Group'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ Greenalite(Fe2+,Fe3+)2-3Si2O5(OH)4
Hⓘ MinnesotaiteFe32+Si4O10(OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ CalciteCaCO3
Oⓘ FayaliteFe22+(SiO4)
Oⓘ Greenalite(Fe2+,Fe3+)2-3Si2O5(OH)4
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MinnesotaiteFe32+Si4O10(OH)2
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ Fayalite-Forsterite Series
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
MgMagnesium
Mgⓘ TalcMg3Si4O10(OH)2
Mgⓘ Fayalite-Forsterite Series
AlAluminium
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ FayaliteFe22+(SiO4)
Siⓘ Greenalite(Fe2+,Fe3+)2-3Si2O5(OH)4
Siⓘ MinnesotaiteFe32+Si4O10(OH)2
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ Fayalite-Forsterite Series
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ CalciteCaCO3
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ FayaliteFe22+(SiO4)
Feⓘ Greenalite(Fe2+,Fe3+)2-3Si2O5(OH)4
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ MinnesotaiteFe32+Si4O10(OH)2
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
Feⓘ Fayalite-Forsterite Series
CuCopper
Cuⓘ ChalcopyriteCuFeS2
AuGold
Auⓘ Native GoldAu

Other Databases

Link to USGS MRDS:10055890

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic 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

Rasmussen, M. G., Evans, B. W., Kuehner, S. M. (1998). Low-temperature fayalite, greenalite, and minnesotaite from the Overlook gold deposit, Washington: phase relations in the system FeO-SiO2-H2O. The Canadian Mineralogist, 36 (1), 147-162.
Bancroft, Howland, (1914), the Ore Deposits of Northeastern Washington: U.S.G.S. Bulletin 550, 215 P.
Shedd, Solon, Jenkins, O. P., Cooper, H. H. (1922) Iron ores, fuels and fluxes of Washington. Bulletin 27. Washington Geological Survey
Glover, S.L., (1942), Washington Iron Ores, a Summary Report: Washington Division of Mines and Mining Report of Investigations 2., 23 P.
Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.
Muessig, Siegfried, (1967), Geology of the Republic Quad. and Part of the Aeneas Quad., Ferry County, Washington: U.S.G.S. Bulletin 1216, 135 P., 1 Pl.
Tschauder, R.J., (1989), Gold Deposits in Northern Ferry County, Washington. in Joseph N.L. and Others; Editors, Geologic Guidebook for Washington and Adjacent Areas: Washington Division of Geology and Earth Resources Information Circular 86, P. 241-253.
Joseph, N.L., (1990), Mineral Industry News Notes:washington Geologic Newsletter, V. 18, No. 2, P. 19-20.
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