Empire Star group (Empire Star Mines Company holdings), Grass Valley, Grass Valley Mining District, Nevada County, California, USAi
| Regional Level Types | |
|---|---|
| Empire Star group (Empire Star Mines Company holdings) | Group of Mines |
| Grass Valley | Valley |
| Grass Valley Mining District | Mining District |
| Nevada County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 12' 23'' North , 121° 2' 43'' West
Latitude & Longitude (decimal):
Type:
Group of Mines
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Grass Valley | 12,944 (2017) | 2.0km |
| Nevada City | 3,152 (2017) | 6.6km |
| Alta Sierra | 6,911 (2011) | 7.2km |
| Rough and Ready | 963 (2011) | 8.3km |
| Penn Valley | 1,621 (2011) | 12.6km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Nevada County Gem & Mineral Society | Grass Valley, California | 2km |
| Sutter Buttes Gem & Mineral Society | Marysville, California | 48km |
A former group of Au-Zn-As-Pb occurrences/mines located in secs. 26, 27, 34 & 35, T16N, R8E, MDM, in the vicinity of Grass Valley. Owned by the Empire Star Mines Company. MRDS database stated accuracy for this location is .
Patented in 1929, the company took over the Coe, Crown Point, Hermosa, Rocky Bar, Gold Hill, Hudson Bay, Grange, North Star, East Star, Central, New York Hill, Granite Hill, Pennsylvania-W.Y.O.D.-Golden Treasure-Telegraph, Cassidy, Bowery, Empire-New Ophir-Daisy Hill, Omaha-Lone Jack, Homeward Bound and Wisconsin (Menlo) (the last 4 belonging to the old Empire West holdings), Orleans-Prescott Hill-Kings Hill, Hevston Hill-Sebastopol-Biggs Sims & Electric & many others.
ADDITIONAL NAMES: Minnie/Gold Hill; Liberty Hill & Noon Summer; Sims/Nuttal/Telegraph/Chesapeake; Fillmore/General Grant/Houstan Hill; Magenta/Mother Neal/Nevada/No 3; Tule Belle/Gold Bar/Blue Bell, New Dorn Hill/Walworth/Watt and Co.
Patented in 1929, the company took over the Coe, Crown Point, Hermosa, Rocky Bar, Gold Hill, Hudson Bay, Grange, North Star, East Star, Central, New York Hill, Granite Hill, Pennsylvania-W.Y.O.D.-Golden Treasure-Telegraph, Cassidy, Bowery, Empire-New Ophir-Daisy Hill, Omaha-Lone Jack, Homeward Bound and Wisconsin (Menlo) (the last 4 belonging to the old Empire West holdings), Orleans-Prescott Hill-Kings Hill, Hevston Hill-Sebastopol-Biggs Sims & Electric & many others.
ADDITIONAL NAMES: Minnie/Gold Hill; Liberty Hill & Noon Summer; Sims/Nuttal/Telegraph/Chesapeake; Fillmore/General Grant/Houstan Hill; Magenta/Mother Neal/Nevada/No 3; Tule Belle/Gold Bar/Blue Bell, New Dorn Hill/Walworth/Watt and Co.
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-localities17 valid minerals.
Detailed Mineral List:
| ⓘ Altaite Formula: PbTe Description: Occurs on the 5,000 foot level. References: |
| ⓘ Ankerite Formula: Ca(Fe2+,Mg)(CO3)2 Localities: Reported from at least 6 localities in this region. |
| ⓘ Arsenopyrite Formula: FeAsS Localities: Pennsylvania Mine [1] (Pennsylvania Consolidated Qtz; Pennsylvania-W.Y.O.D.; Pennsylvania vein; Pennsylvania-Wyod; Wyod), Empire Star group (Empire Star Mines Company holdings), Grass Valley, Grass Valley Mining District, Nevada County, California, USA Sultana Mine (Electric Mine; Sultana-Orleans Mine), Empire Star group (Empire Star Mines Company holdings), Grass Valley, Grass Valley Mining District, Nevada County, California, USA Betsey Shaft (Betsy), Sultana Mine (Electric Mine; Sultana-Orleans Mine), Empire Star group (Empire Star Mines Company holdings), Grass Valley, Grass Valley Mining District, Nevada County, California, USA |
| ⓘ Calcite Formula: CaCO3 Localities: Reported from at least 8 localities in this region. |
| ⓘ Chalcopyrite Formula: CuFeS2 Localities: Reported from at least 7 localities in this region. |
| ⓘ Dolomite Formula: CaMg(CO3)2 Description: Mg:Fe = 3:2. |
| ⓘ Ferrimolybdite Formula: Fe2(MoO4)3 · nH2O References: |
| ⓘ Galena Formula: PbS Localities: Reported from at least 12 localities in this region. |
| ⓘ 'Limonite' |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 Localities: Reported from at least 6 localities in this region. |
| ⓘ Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 Localities: Reported from at least 6 localities in this region. |
| ⓘ Native Arsenic Formula: As Description: Occurs on the 1600 foot level as botryoidal pieces with some free gold. References: |
| ⓘ Native Gold Formula: Au Localities: Reported from at least 34 localities in this region. |
| ⓘ Pyrite Formula: FeS2 Localities: Reported from at least 13 localities in this region. |
| ⓘ Pyrrhotite Formula: Fe1-xS |
| ⓘ Quartz Formula: SiO2 Localities: Reported from at least 31 localities in this region. |
| ⓘ Quartz var. Chalcedony Formula: SiO2 |
| ⓘ Scheelite Formula: Ca(WO4) |
| ⓘ Sphalerite Formula: ZnS Localities: Reported from at least 10 localities in this region. |
| ⓘ 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S Description: A heavy mass was found. References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| ⓘ | Native Arsenic | 1.CA.05 | As |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | Altaite | 2.CD.10 | PbTe |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| ⓘ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Quartz var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
| ⓘ | Ferrimolybdite | 7.GB.30 | Fe2(MoO4)3 · nH2O |
| Group 9 - Silicates | |||
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| C | Carbon | |
| C | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Dolomite | CaMg(CO3)2 |
| O | Oxygen | |
| O | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| O | ⓘ Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Scheelite | Ca(WO4) |
| O | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Mg | Magnesium | |
| Mg | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Al | Aluminium | |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| K | Potassium | |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
| Ca | ⓘ Scheelite | Ca(WO4) |
| Fe | Iron | |
| Fe | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| As | ⓘ Native Arsenic | As |
| Mo | Molybdenum | |
| Mo | ⓘ Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| Sb | Antimony | |
| Sb | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Te | Tellurium | |
| Te | ⓘ Altaite | PbTe |
| W | Tungsten | |
| W | ⓘ Scheelite | Ca(WO4) |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Altaite | PbTe |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10007516 |
|---|
Localities in this Region
- California
- Nevada County
- Grass Valley Mining District
- Grass Valley
- Empire Star group (Empire Star Mines Company holdings)
- Badger Hill Quartz Mine (Badger; Badger Hill Qtz.)
- Crown Point Consolidated Quartz Mine (Crown Point Mine; Crown Point Con. Qtz.; Confidence; Wm Penn; William Penn)
- Daisy Hill Mine
- Dakota Quartz Mine (Dakota Mine; Dakota Qtz)
- East Star Lode Mine (East Star Mine)
- Empire Mine (Empire vein)
- Empire West Mine (Lone Ridge)
- Gold Hill Quartz Mine (Gold Hill Mine; Gold Hill Qtz)
- Massachusetts Hill Quartz Mine (Massachusetts Hill Qtz; Rocky Bar Mine; Boston Ravine claim; Great Britain claim; New Rocky Bar claim; New York Hill claim; Polkinghorn claim; Rocky Bar claim; Stockbridge claim)
- New Ophir Mine
- North Star group
- Empire Star group (Empire Star Mines Company holdings)
- Grass Valley
- Grass Valley Mining District
- Nevada County
- California
- Nevada County
- Grass Valley Mining District
- Grass Valley
- Empire Star group (Empire Star Mines Company holdings)
- North Star group
- Oregon Mine (Kate Hayes; Kate Hays; Crescent)
- Osborn Hill Mine (Osborn Hill vein; Woodberry Mine)
- Pennsylvania Mine [1] (Pennsylvania Consolidated Qtz; Pennsylvania-W.Y.O.D.; Pennsylvania vein; Pennsylvania-Wyod; Wyod)
- Sultana Mine (Electric Mine; Sultana-Orleans Mine)
- Telegraph Mine
- Empire Star group (Empire Star Mines Company holdings)
- Grass Valley
- Grass Valley Mining District
- Nevada County
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060570509
Empire Mine, Empire Star group, Grass Valley, Grass Valley Mining District, Nevada County, California, USA