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Blewett Mining District (Peshastin Mining District), Chelan County, Washington, USAi
Regional Level Types
Blewett Mining District (Peshastin Mining District)Area
Chelan CountyCounty
WashingtonState
USACountry

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00321890017848268959154.jpg
Blewett Mill

Blewett Mining District, Chelan County, Washington, USA
06597990017272037691159.jpg
Ingalls Ophiolite Complex, Blewett District

Blewett Mining District, Chelan County, Washington, USA
08038070017272037709184.jpg
Conglomerate south of the former site of Blewett

Blewett Mining District, Chelan County, Washington, USA
08289630017653305859599.jpg
Blewett Mill

Blewett Mining District, Chelan County, Washington, USA
06597990017272037691159.jpg
Ingalls Ophiolite Complex, Blewett District

Blewett Mining District, Chelan County, Washington, USA
08038070017272037709184.jpg
Conglomerate south of the former site of Blewett

Blewett Mining District, Chelan County, Washington, USA
00321890017848268959154.jpg
Blewett Mill

Blewett Mining District, Chelan County, Washington, USA
06597990017272037691159.jpg
Ingalls Ophiolite Complex, Blewett District

Blewett Mining District, Chelan County, Washington, USA


Blewett township ore bin
A mining district located on Upper Peshastin Creek down stream to the mouth of Ingalls Creek and including tributaries. The workings on Negro Creek were formerly considered part of the separate Negro Creek district.
Tectonics: Cascade Volcanic Arc

Commodity: Gold occurs As flakes or wire-like forms

Deposit: 3 parallel veins. Ore is generally lo W grade; most of production came from high-grade shoots. Because of tectonic setting and host rock types, it is possible that there are overlapping deposit types in this deposit, particularly silica-carbonate hg, which is common in ophiolitic terranes mrds record d001419 has been merged with this record and deleted

Deposit type: Polymetallic veins

Development: In 1992 montana d'oro was exploring veins in secs. 1-3 in and near blewett camp

Geology: The deposit is near the mt. Stuart batholith. The ingalls tectonic complex is a disrupted ophiolite Tectonic Setting: The Jurassic Ingalls Complex, The Host Rocks Of The Blewett Camp Deposits, Is A Disrupted, Late Jurassic Ophiolite Complex. Igneous Acitivty In The Area Includes The Late Cretaceous Mount Stuart Batholith And Intrusive Rocks Of Early Magmatic Activity Of The Cascades Magmatic Arc (Miller, 1985, P. 27; Tabor And Others, 1982, P. 5-6). Ore Control: Where The Veins Cut Gneissic Rocks, The Gangue Is Chiefly Quartz With Minor Amounts Of Calcite, But Where The Veins Cut Serpentinite, The Amount Of Calcite Increases Relative To Quartz. The Most Productive Veins Are In Culver Gulch And Trend N75w. The Ore Is Generally Of Low Grade. Most Production Was From High-Grade Ore Shoots (Huntting, 1943, P. 8). Most of the mineralization of the blewett camp is in veins cutting serpentinite of the ingalls complex (hawkins formation in weaver, 1911, p. 31-34). Other veins are in metasedimatary and metvolcanic rock of the complex; howevere, veins in the serpentinite are generally more productive than those in the other rocks (weaver, 1911, p. 29-33).

Rock formation(s): Ingalls Tectonic Complex;Ingalls Tectonic Complex;Ingalls Tectonic Complex


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

22 valid minerals.

Rock Types Recorded


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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Arsenopyrite
Formula: FeAsS
Localities: Reported from at least 22 localities in this region.
ⓘ 'Axinite Group'
ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Calcite
Formula: CaCO3
Localities: Reported from at least 29 localities in this region.
ⓘ Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 18 localities in this region.
ⓘ 'Chlorite Group'
ⓘ Chromite
Formula: Fe2+Cr3+2O4
Localities: Reported from at least 16 localities in this region.
ⓘ Cinnabar
Formula: HgS
Localities: Reported from at least 16 localities in this region.
ⓘ Cuprite
Formula: Cu2O
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Galena
Formula: PbS
Localities: Reported from at least 12 localities in this region.
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ 'Garnierite'
ⓘ Hematite
Formula: Fe2O3
Localities: Reported from at least 13 localities in this region.
ⓘ 'Heulandite Subgroup'
Formula: (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Description: Confirmed to Heulandite group but not to end species
ⓘ 'Limonite'
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
Localities: Reported from at least 16 localities in this region.
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
Localities: Reported from at least 12 localities in this region.
ⓘ Native Copper
Formula: Cu
Localities: Reported from at least 14 localities in this region.
ⓘ Native Gold
Formula: Au
Localities: Reported from at least 49 localities in this region.
ⓘ Native Mercury
Formula: Hg
ⓘ Native Platinum
Formula: Pt
ⓘ Pyrite
Formula: FeS2
Localities: Reported from at least 29 localities in this region.
ⓘ Quartz
Formula: SiO2
Localities: Reported from at least 43 localities in this region.
ⓘ Quartz var. Agate
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
ⓘ Scheelite
Formula: Ca(WO4)
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
Localities: Reported from at least 17 localities in this region.
ⓘ Spinel
Formula: MgAl2O4
ⓘ Stibnite
Formula: Sb2S3
Localities: Reported from at least 11 localities in this region.
ⓘ 'Stilbite Subgroup'
Formula: M6-7[Al8-9Si27-28O72] · nH2O
ⓘ Talc
Formula: Mg3Si4O10(OH)2
Localities: Reported from at least 18 localities in this region.
ⓘ 'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper1.AA.05Cu
ⓘNative Gold1.AA.05Au
ⓘNative Mercury1.AD.05Hg
ⓘNative Platinum1.AF.10Pt
Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘCinnabar2.CD.15aHgS
ⓘStibnite2.DB.05Sb2S3
ⓘPyrite2.EB.05aFeS2
ⓘArsenopyrite2.EB.20FeAsS
ⓘ'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
Group 4 - Oxides and Hydroxides
ⓘCuprite4.AA.10Cu2O
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘSpinel4.BB.05MgAl2O4
ⓘHematite4.CB.05Fe2O3
ⓘQuartz
var. Agate		4.DA.05SiO2
ⓘvar. Chalcedony4.DA.05SiO2
ⓘ4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘDolomite5.AB.10CaMg(CO3)2
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘScheelite7.GA.05Ca(WO4)
Group 9 - Silicates
ⓘTalc9.EC.05Mg3Si4O10(OH)2
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chlorite Group'-
ⓘ'Heulandite Subgroup'-(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
ⓘ'Limonite'-
ⓘ'Stilbite Subgroup'-M6-7[Al8-9Si27-28O72] · nH2O
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Garnierite'-
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4
ⓘ'Axinite Group'-

List of minerals for each chemical element

HHydrogen
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ CalciteCaCO3
Cⓘ DolomiteCaMg(CO3)2
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ Quartz var. AgateSiO2
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CalciteCaCO3
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ CupriteCu2O
Oⓘ DolomiteCaMg(CO3)2
Oⓘ HematiteFe2O3
Oⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ QuartzSiO2
Oⓘ ScheeliteCa(WO4)
Oⓘ SpinelMgAl2O4
Oⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
Naⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ DolomiteCaMg(CO3)2
Mgⓘ SpinelMgAl2O4
Mgⓘ TalcMg3Si4O10(OH)2
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Alⓘ SpinelMgAl2O4
Alⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
SiSilicon
Siⓘ Quartz var. AgateSiO2
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Siⓘ QuartzSiO2
Siⓘ Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ Garnet GroupX3Z2(SiO4)3
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ ChalcopyriteCuFeS2
Sⓘ CinnabarHgS
Sⓘ GalenaPbS
Sⓘ PyriteFeS2
Sⓘ StibniteSb2S3
Sⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ DolomiteCaMg(CO3)2
Caⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Caⓘ ScheeliteCa(WO4)
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
FeIron
Feⓘ ArsenopyriteFeAsS
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ ChalcopyriteCuFeS2
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ HematiteFe2O3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ PyriteFeS2
CuCopper
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ CupriteCu2O
Cuⓘ Native CopperCu
Cuⓘ MalachiteCu2(CO3)(OH)2
Cuⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
AsArsenic
Asⓘ ArsenopyriteFeAsS
SbAntimony
Sbⓘ StibniteSb2S3
Sbⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
WTungsten
Wⓘ ScheeliteCa(WO4)
PtPlatinum
Ptⓘ Native PlatinumPt
AuGold
Auⓘ Native GoldAu
HgMercury
Hgⓘ CinnabarHgS
Hgⓘ Native MercuryHg
PbLead
Pbⓘ GalenaPbS

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Other Databases

Link to USGS MRDS:10040161

Localities in this Region

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Other Regions, Features and Areas that Intersect

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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

Weaver C. (1911): Geology and Ore Deposits of the Blewett Mining District. Washington Geological Survey Bulletin 6
Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.
Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.pages 72,74
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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