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Washington Mining District (Omega Mining District), Nevada County, California, USAi
| Regional Level Types | |
|---|---|
| Washington Mining District (Omega Mining District) | Mining District |
| Nevada County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° North , 120° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~68km
Type:
Kรถppen climate type:
NOTE: There is no USGS MRDS file for this district.
Location: A former Au-Cr-Cu-Ag-Pb-Zn mining area located in east-central Nevada County in the vicinity of the old mining town of Washington, 18 miles NE of Nevada City. It is in the south end of the Goodyear's Bar-Alleghany belt and includes the "diggings" at Alpha and Omega.
History: The Washington district was first mined during the gold rush, and the placers of the Middle Yuba River were highly productive. The Omega and Alpha hydraulic mines were opened in the middle 1850s and worked on a major scale through the 1880s. Later, Chinese miners reworked the tailings. Lode mining also began in the 1850s and continued steadily until about 1915. There was activity in the district again during the 1930s, and the Red Ledge mine has been worked in recent years. Baryte, chromite, and asbestos also have been mined here.
Geology: The district is underlain chiefly by slate, schist and quartzite of the Blue Canyon Formation (Carboniferous). A serpentine body one to two miles wide crops out in the central portion. The Relief Quartzite (Carboniferous) and amphibolite lie to the W and granodiorite to the E. The serpentine is a south extension of a belt that passes north-northwest through Alleghany and Goodyear's Bar in Sierra County. Tertiary andesite overlies the main ridges to the N and S.
Ore Deposits: The auriferous Tertiary channel gravels at Alpha and Omega are part of the main channel that extends west and north to Relief and North Bloomfield. Jarmin (1927) estimated that, at
Omega, 13 million cubic yards were mined and yielded 13ยฝ cents (period values) in Au per cubic yard. Lindgren (1911) estimated that 40 million yards remained. The quartz veins contain small but rich ore bodies, similar to those of the Alleghany district to the north, but are not as plentiful. Except for arsenopyrite, sulfides are not usually abundant. A number of beautiful specimens of crystallized gold have been found in the Red Ledge mine. The Spanish mine also has yielded large amounts of
baryte.
Mines: Lode: Giant King, Mexican Cons., Mount Hope, Red Ledge, Red Paint, St. Patrick, Spanish, Treasure Box. Placer: Alpha ($2 million +), Centennial, Omega, Phelps, and Yuba River.
Location: A former Au-Cr-Cu-Ag-Pb-Zn mining area located in east-central Nevada County in the vicinity of the old mining town of Washington, 18 miles NE of Nevada City. It is in the south end of the Goodyear's Bar-Alleghany belt and includes the "diggings" at Alpha and Omega.
History: The Washington district was first mined during the gold rush, and the placers of the Middle Yuba River were highly productive. The Omega and Alpha hydraulic mines were opened in the middle 1850s and worked on a major scale through the 1880s. Later, Chinese miners reworked the tailings. Lode mining also began in the 1850s and continued steadily until about 1915. There was activity in the district again during the 1930s, and the Red Ledge mine has been worked in recent years. Baryte, chromite, and asbestos also have been mined here.
Geology: The district is underlain chiefly by slate, schist and quartzite of the Blue Canyon Formation (Carboniferous). A serpentine body one to two miles wide crops out in the central portion. The Relief Quartzite (Carboniferous) and amphibolite lie to the W and granodiorite to the E. The serpentine is a south extension of a belt that passes north-northwest through Alleghany and Goodyear's Bar in Sierra County. Tertiary andesite overlies the main ridges to the N and S.
Ore Deposits: The auriferous Tertiary channel gravels at Alpha and Omega are part of the main channel that extends west and north to Relief and North Bloomfield. Jarmin (1927) estimated that, at
Omega, 13 million cubic yards were mined and yielded 13ยฝ cents (period values) in Au per cubic yard. Lindgren (1911) estimated that 40 million yards remained. The quartz veins contain small but rich ore bodies, similar to those of the Alleghany district to the north, but are not as plentiful. Except for arsenopyrite, sulfides are not usually abundant. A number of beautiful specimens of crystallized gold have been found in the Red Ledge mine. The Spanish mine also has yielded large amounts of
baryte.
Mines: Lode: Giant King, Mexican Cons., Mount Hope, Red Ledge, Red Paint, St. Patrick, Spanish, Treasure Box. Placer: Alpha ($2 million +), Centennial, Omega, Phelps, and Yuba River.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity 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-localities32 valid minerals. 1 (TL) - type locality of valid minerals.
Detailed Mineral List:
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| โ | Native Copper | 1.AA.05 | Cu |
| โ | Native Gold | 1.AA.05 | Au |
| โ | Graphite | 1.CB.05a | C |
| Group 2 - Sulphides and Sulfosalts | |||
| โ | Bornite | 2.BA.15 | Cu5FeS4 |
| โ | Sphalerite | 2.CB.05a | ZnS |
| โ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| โ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| โ | Galena | 2.CD.10 | PbS |
| โ | Stibnite | 2.DB.05 | Sb2S3 |
| โ | Pyrite | 2.EB.05a | FeS2 |
| โ | Arsenopyrite | 2.EB.20 | FeAsS |
| Group 4 - Oxides and Hydroxides | |||
| โ | Cuprite | 4.AA.10 | Cu2O |
| โ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| โ | Magnesiochromite | 4.BB.05 | MgCr2O4 |
| โ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| โ | Hematite | 4.CB.05 | Fe2O3 |
| โ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| โ | Quartz | 4.DA.05 | SiO2 |
| โ | Rutile | 4.DB.05 | TiO2 |
| โ | Redledgeite (TL) | 4.DK.05b | Ba(Ti4+6Cr3+2)O16 |
| Group 5 - Nitrates and Carbonates | |||
| โ | Calcite | 5.AB.05 | CaCO3 |
| โ | Siderite | 5.AB.05 | FeCO3 |
| โ | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
| โ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| โ | Baryte | 7.AD.35 | BaSO4 |
| Group 9 - Silicates | |||
| โ | Knorringite | 9.AD.25 | Mg3Cr3+2(SiO4)3 |
| โ | Uvarovite | 9.AD.25 | Ca3Cr3+2(SiO4)3 |
| โ | Zircon | 9.AD.30 | Zr(SiO4) |
| โ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| โ | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
| โ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| โ | var. Phengite | 9.EC.15 | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
| โ | var. Mariposite | 9.EC.15 | K(Al,Cr)2(Al,Si)4O10(OH)2 |
| โ | Clinochlore | 9.EC.55 | Mg5Al(AlSi3O10)(OH)8 |
| โ | var. Chromium-bearing Clinochlore | 9.EC.55 | Mg5(Al,Cr)2Si3O10(OH)8 |
| Unclassified | |||
| โ | 'Amphibole Supergroup' | - | AB2C5(T8O22)W2 |
| โ | 'Asbestos' | - | |
| โ | 'Chlorite Group' | - | |
| โ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | โ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| H | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | โ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| H | โ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | โ Muscovite var. Phengite | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
| H | โ Talc | Mg3Si4O10(OH)2 |
| H | โ Muscovite var. Mariposite | K(Al,Cr)2(Al,Si)4O10(OH)2 |
| H | โ Serpentine Subgroup | D3[Si2O5](OH)4 |
| C | Carbon | |
| C | โ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| C | โ Calcite | CaCO3 |
| C | โ Dolomite | CaMg(CO3)2 |
| C | โ Graphite | C |
| C | โ Siderite | FeCO3 |
| O | Oxygen | |
| O | โ Amphibole Supergroup | AB2C5(T8O22)W2 |
| O | โ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| O | โ Baryte | BaSO4 |
| O | โ Calcite | CaCO3 |
| O | โ Chromite | Fe2+Cr23+O4 |
| O | โ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| O | โ Cuprite | Cu2O |
| O | โ Dolomite | CaMg(CO3)2 |
| O | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | โ Hematite | Fe2O3 |
| O | โ Ilmenite | Fe2+TiO3 |
| O | โ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| O | โ Knorringite | Mg3Cr23+(SiO4)3 |
| O | โ Magnesiochromite | MgCr2O4 |
| O | โ Magnetite | Fe2+Fe23+O4 |
| O | โ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | โ Muscovite var. Phengite | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
| O | โ Quartz | SiO2 |
| O | โ Redledgeite | Ba(Ti64+Cr23+)O16 |
| O | โ Rutile | TiO2 |
| O | โ Siderite | FeCO3 |
| O | โ Talc | Mg3Si4O10(OH)2 |
| O | โ Uvarovite | Ca3Cr23+(SiO4)3 |
| O | โ Zircon | Zr(SiO4) |
| O | โ Muscovite var. Mariposite | K(Al,Cr)2(Al,Si)4O10(OH)2 |
| O | โ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Mg | Magnesium | |
| Mg | โ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Mg | โ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Mg | โ Dolomite | CaMg(CO3)2 |
| Mg | โ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| Mg | โ Knorringite | Mg3Cr23+(SiO4)3 |
| Mg | โ Magnesiochromite | MgCr2O4 |
| Mg | โ Muscovite var. Phengite | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
| Mg | โ Talc | Mg3Si4O10(OH)2 |
| Al | Aluminium | |
| Al | โ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Al | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | โ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| Al | โ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | โ Muscovite var. Phengite | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
| Al | โ Muscovite var. Mariposite | K(Al,Cr)2(Al,Si)4O10(OH)2 |
| Si | Silicon | |
| Si | โ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Si | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | โ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| Si | โ Knorringite | Mg3Cr23+(SiO4)3 |
| Si | โ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | โ Muscovite var. Phengite | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
| Si | โ Quartz | SiO2 |
| Si | โ Talc | Mg3Si4O10(OH)2 |
| Si | โ Uvarovite | Ca3Cr23+(SiO4)3 |
| Si | โ Zircon | Zr(SiO4) |
| Si | โ Muscovite var. Mariposite | K(Al,Cr)2(Al,Si)4O10(OH)2 |
| Si | โ Serpentine Subgroup | D3[Si2O5](OH)4 |
| S | Sulfur | |
| S | โ Arsenopyrite | FeAsS |
| S | โ Baryte | BaSO4 |
| S | โ Bornite | Cu5FeS4 |
| S | โ Chalcopyrite | CuFeS2 |
| S | โ Galena | PbS |
| S | โ Pyrite | FeS2 |
| S | โ Pyrrhotite | Fe1-xS |
| S | โ Sphalerite | ZnS |
| S | โ Stibnite | Sb2S3 |
| K | Potassium | |
| K | โ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | โ Muscovite var. Phengite | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
| K | โ Muscovite var. Mariposite | K(Al,Cr)2(Al,Si)4O10(OH)2 |
| Ca | Calcium | |
| Ca | โ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Ca | โ Calcite | CaCO3 |
| Ca | โ Dolomite | CaMg(CO3)2 |
| Ca | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | โ Uvarovite | Ca3Cr23+(SiO4)3 |
| Ti | Titanium | |
| Ti | โ Ilmenite | Fe2+TiO3 |
| Ti | โ Redledgeite | Ba(Ti64+Cr23+)O16 |
| Ti | โ Rutile | TiO2 |
| Cr | Chromium | |
| Cr | โ Chromite | Fe2+Cr23+O4 |
| Cr | โ Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
| Cr | โ Knorringite | Mg3Cr23+(SiO4)3 |
| Cr | โ Magnesiochromite | MgCr2O4 |
| Cr | โ Redledgeite | Ba(Ti64+Cr23+)O16 |
| Cr | โ Uvarovite | Ca3Cr23+(SiO4)3 |
| Cr | โ Muscovite var. Mariposite | K(Al,Cr)2(Al,Si)4O10(OH)2 |
| Fe | Iron | |
| Fe | โ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Fe | โ Arsenopyrite | FeAsS |
| Fe | โ Bornite | Cu5FeS4 |
| Fe | โ Chalcopyrite | CuFeS2 |
| Fe | โ Chromite | Fe2+Cr23+O4 |
| Fe | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | โ Hematite | Fe2O3 |
| Fe | โ Ilmenite | Fe2+TiO3 |
| Fe | โ Magnetite | Fe2+Fe23+O4 |
| Fe | โ Muscovite var. Phengite | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
| Fe | โ Pyrite | FeS2 |
| Fe | โ Pyrrhotite | Fe1-xS |
| Fe | โ Siderite | FeCO3 |
| Cu | Copper | |
| Cu | โ Bornite | Cu5FeS4 |
| Cu | โ Chalcopyrite | CuFeS2 |
| Cu | โ Cuprite | Cu2O |
| Cu | โ Native Copper | Cu |
| Zn | Zinc | |
| Zn | โ Sphalerite | ZnS |
| As | Arsenic | |
| As | โ Arsenopyrite | FeAsS |
| Zr | Zirconium | |
| Zr | โ Zircon | Zr(SiO4) |
| Sb | Antimony | |
| Sb | โ Stibnite | Sb2S3 |
| Ba | Barium | |
| Ba | โ Baryte | BaSO4 |
| Ba | โ Redledgeite | Ba(Ti64+Cr23+)O16 |
| Au | Gold | |
| Au | โ Native Gold | Au |
| Pb | Lead | |
| Pb | โ Galena | PbS |
Localities in this Region
- California
- Nevada County
- Washington Mining District (Omega Mining District)
- Alpha-Omega Mines
- Alpha
- Alpha Diggings Placer Mine (Alpha Diggings)
- Giant King Quartz Mine (Giant King; Giant King Qtz.; Jumbo vein; Giant King vein)
- Krumbecker Mine (South Cumbecker)
- Local Option placer
- Olsen prospect
- Paine claims (Neva May and Genevieve)
- Phelps Hill Consolidated (Phelps Hill Cons.; Phelps Mine)
- Scotchman Creek placer
- Steep Hollow placer
- Unnamed placer Au occurrence [28]
- Unnamed placer Au occurrences [31]
- Unnamed Tertiary Au deposits [23]
- Victory claim (Mount Hill Chrome Mine [1917-1918]; Victory Hill [1941])
- Omega
- Alta & Bingham Consolidated Quartz Mine (Alta and Bingham Cons.; Alta & Bingham Cons Qtz)
- Arctic group
- Becker Quartz Mine (Becker Qtz.)
- Blue Bell Quartz Mine (Blue Bell Qtz.; Blue Bell Gp.; Blue Bell Mine; German Cons.; German Mine)
- Blue Jay group
- Blue Jay Quartz Mine (Blue Jay Qtz)
- Celia Mine (Celia and Free Trade)
- Colombia Consolidated Quartz Mine (Colombia Cons Qtz.; Columbia group; Canon Creek claim; Canyon Creek claim; Waldeck claim)
- Cornucopia Quartz Mine (Cornucopia Qtz)
- Cosmopolitan Ledge Mine
- Croesus Quartz Mine (Croesus Qtz.)
- Dal Quartz Mine (Dal Qtz)
- Dee Quartz Mine (Dee Qtz.)
- Diamond Creek Gravel claim
- Dinero Mining Company Mine
- Don Quartz Mine (Don Qtz.)
- Dutretre group
- Eagle Bird Quartz Mine (Eagle Bird Qtz.; Diamond Creek Mine; Diamond Cons.; Eagle Bird Mine; Gold Bug; Gold Bug/Sunlight Consolidated; Sunlight Consolidated; Yuba Canyon Consolidated; Yuba Canyon Cons.; Diamond Creek/Stem Winder/Etna)
- El Monte placer
- Ethel Gold Mining Company Mine (Ethel Gold Mining Co.; Ethel & South Ethel; Ethel & So. Ethel)
- Free Trade Quartz Mine (Free Trade Qtz)
- Friendly Peace occurrence
- Fritz Meister placer
- Golden Gate Consolidated Quartz Mine (North Star; Golden Gate Con Qtz)
- Hunken Consolidated placer (Hunken Cons.)
- Jokkoree Quartz Mine (Jokkoree Qtz.)
- Last Chance Mine (Last Chance Quartz Mine; Last Chance Qtz)
- Lindsay Mine (Big & Little Lindsay)
- Live Oak Quartz Mine (Live Oak Qtz.)
- Nevada Quartz Ledge Mine (Nevada Qtz Ledge)
- North Star occurrence
- Nugget Placer Mine
- Ocean Star Mine (Cooley)
- Omega Placer Mine
- Orion Consolidated Mine (Orion Cons)
- Oro Placer Mine
- Rattlesnake Nos. 1 & 2 occurrence
- Red Cross Consolidated Quartz Mine (Red Cross Consolidated Qtz.; Red Cross Consolidated)
- Regina Quartz Mine (Regina Qtz.; Regina)
- Rising Sun Quartz Mine (Rising Sun Qtz.)
- Sacramento Consolidated Blue Gravel placer (Sacramento Cons. Blue Gravel)
- Salathiel Gold Quartz Mine (Salathiel Gold Qtz)
- Washington Mining District (Omega Mining District)
- Nevada County
- California
- Nevada County
- Washington Mining District (Omega Mining District)
- Omega
- Secret Treasure Quartz Mine (Secret Treasure Qtz; Secret Treasure)
- Snowflower Mine
- South Yuba River placer [3]
- Star Ledge group
- Star Mining Company Mine (Star Mng. Co.; Star Ledge; Orleans; Niagara)
- Starr Group Mine (Starr Gp.; Cooley Mine)
- Stem Winder Mine (Etna)
- Sulphuret Gold & Silver Quartz Mine (Sulphuret Gold & Silver Qtz.)
- Sunset Quartz Mine (Sunset Qtz.)
- Superior Placer Mine
- Unidentified Au workings [20]
- Unidentified Au workings [22]
- United Banner Mine (Unite Eagle & Macon; United Egle and Macn)
- Waldeck Consolidated Quartz Mine (Waldeck Cons. Qtz.; Washington)
- Washington Chief Consolidated Mine (Washington Chief Con.; Washington Chief Ledge; Jefferson Mine)
- Washington Consolidated Mine (Washington Cons.; Blue Bell group; Sunset; German Cons.; German Consolidated/Dee; Don; and Dale)
- Yuba Consolidated Mine (Yuba Cons.; Yuba claim; Central and Gray Eagle group; Central & Gray Eagle Gp.; Hathaway Ledge/Marietta/Mayflower; Rising Sun/Lindsay/Dinero Mining Company)
- Yuba Mine (Yuba Consolidated; Yuba Quartz Mine; Yuba Qtz; Yuba claim; Yuba River)
- Washington
- Asbestos Quartz Lode and mill
- Black Quartz Mine
- Cotton King Mine (Lent; January lode)
- F. W. Bradley's Barite property
- Fairview Mine (California Mining Company; Calumet)
- Flintlock Mine
- Foster Bar Placer Mine
- Gillis Mine
- Greystone Group Mine (Greystone Gp.)
- Logan Creek Placer Mine
- Lucky Al Consolidated Quartz Mine (Lucky Al Con Qtz; Lucky Al Consolidated)
- Lucky Strike Placer Mine [1]
- Moscatelli No. 1 claim (Pete Moscatelli Chrome occurrence)
- Moscatelli No. 2 property (Lucky Bluff claim [WWI]; Lucky Friday claim)
- Oakman group [2] (Lady Oakman vein)
- Oakman Group Mine [1]
- Rapid Fire claim
- Red Ledge Mine
- Red Lodge Mine
- Red Point Mine
- Sandy Hook placer
- Slug Lode Mine (Slug group)
- Solace Quartz Mine (Solace Qtz.; Solace)
- South Yuba River placer [1]
- Spanish Quartz Mine (Spanish Qtz.; Spanish Mine; Spanish Mng. & S F Com. Co.; Spanish Mng. & S F Commercial Co.; American claim; Spanish claim; Santa Anita claim; Santa Anita Extension claim; Pine Tree claim; Singleton claim; Grizzly claim; Savage claim; Mexican Cons./Santa Anita)
- St. Patrick Consolidated Quartz Mine (St Patrick Cons. Qtz.; St. Patrick Mine)
- Stark Mine (Cotton King claim; Lent claim; Victory claim; Asbestos Quartz January claim)
- Treasure Box Mine (Treasure Box No. 2 Quartz Mine; Treasure Box No. 2 Qtz.; Captain Walker Quartz; Captain Walker Qtz.; Treasure Box Nos. 1 - 2 & 3 claims)
- Turtledove Chrome Mine
- Unidentified Au workings [21]
- Valentine Consolidated Quartz Mine (Valentine Consolidated; Valentine Cons Qtz.)
- Washington tunnel
- White & Johnson Mine (White and Johnson Mine)
- Omega
- Washington Mining District (Omega Mining District)
- Nevada County
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Calaveras-Baker DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- Sierra NevadaMountain Range
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References
Red Ledge Mine, Washington, Washington Mining District, Nevada County, California, USA