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Mohawk Mine, Adams Peak, Last Chance Mining District, Plumas County, California, USAi
| Regional Level Types | |
|---|---|
| Mohawk Mine | Mine |
| Adams Peak | Peak |
| Last Chance Mining District | Mining District |
| Plumas County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
39° 54' 7'' North , 120° 8' 23'' West
Latitude & Longitude (decimal):
Type:
Kรถppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Chilcoot-Vinton | 454 (2011) | 10.6km |
| Doyle | 678 (2011) | 14.3km |
| Beckwourth | 432 (2017) | 22.3km |
| Loyalton | 702 (2017) | 26.5km |
| Patton Village | 702 (2011) | 26.6km |
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 |
|---|---|---|
| Comstock Gold Prospectors | Reno, Nevada | 50km |
| Reno Gem and Mineral Society | Reno, Nevada | 50km |
A Cu-Mo-Ag-Au-U-Bi-W-Zn mine located in sec. 25, T24N, R16E, MDM, 2.8 km (1.8 miles) WSW of Adams Peak (coordinates of record), W of Frenchman Lake and the Little Last Chance Valley, SE of Last Chance Creek, on (9 miles N of Chilcoot), on National Forest land. Property is comprised of 40 acres. MRDS database stated accuracy for this location is 500 meters.
Mineralization is quartz dikes in granite related to either a hydrothermal phase of the magmatic sequence or of pegmatitic-pneumatolitic origin. The ore body strikes N20E and dips 80W at a thickness of 3.05 meters and a length of 914.4 meters. The body is a series of parallel veins. The main vein is the Mohawk. One ore shoot that was developed is 30 feet long and averaged 4 feet in width. The oxidized zone has a depth of 50 feet. Another vein, striking NW and dipping 50E, has been cut at tunnel level. It lies E of the main vein. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges) and/or Paleozoic metavolcanic rocks, unit 2 (Northeastern Sierra Nevada).
Workins include underground openings comprsied of a 180 foot inclined shaft of 80 degrees with 3 levels. At the 50 foot level there is a drift 125 feet N. At ther 180 foot level there is a drift N 65 feet, and about 240 feet of crosscuts. Ore has been stoped from 120 foot level N to the tunnel level.
Production data are found in: MacBoyle, Errol (1918).
Production information: In 1913 there were shipments of 8 tons daily to the Western Ore Purchasing Co. It ran 6% Cu. The total as of 1918 was about 1,000 tons of ore.
Analytical data results: 6-8% Cu, 40 (?) Au, and 2 ounces Ag/ton.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| โ Chalcanthite Formula: CuSO4 · 5H2O |
| โ Chalcocite Formula: Cu2S |
| โ Chalcopyrite Formula: CuFeS2 |
| โ Chrysocolla Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| โ Covellite Formula: CuS |
| โ Cubanite Formula: CuFe2S3 |
| โ Cuprosklodowskite Formula: Cu(UO2)2(SiO3OH)2 · 6H2O |
| โ Cuprotungstite Formula: Cu2(WO4)(OH)2 References: |
| โ Dravite Formula: NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
| โ Ferrimolybdite Formula: Fe2(MoO4)3 · nH2O |
| โ Goethite Formula: Fe3+O(OH) |
| โ Hematite Formula: Fe2O3 |
| โ Hessite Formula: Ag2Te |
| โ Mackinawite Formula: FeS |
| โ Malachite Formula: Cu2(CO3)(OH)2 |
| โ Melanterite Formula: Fe2+(H2O)6SO4 · H2O |
| โ Metatorbernite Formula: Cu(UO2)2(PO4)2 · 8H2O Description: Occurs in quartz veins and shear zones. |
| โ Metazeunerite Formula: Cu(UO2)2(AsO4)2 · 8H2O |
| โ Molybdenite Formula: MoS2 |
| โ Native Bismuth Formula: Bi |
| โ Powellite Formula: Ca(MoO4) |
| โ Pseudomalachite Formula: Cu5(PO4)2(OH)4 |
| โ Pyrite Formula: FeS2 |
| โ Pyrrhotite Formula: Fe1-xS |
| โ Quartz Formula: SiO2 |
| โ Scheelite Formula: Ca(WO4) References: |
| โ Schorl Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
| โ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| โ | Native Bismuth | 1.CA.05 | Bi |
| Group 2 - Sulphides and Sulfosalts | |||
| โ | Chalcocite | 2.BA.05 | Cu2S |
| โ | Hessite | 2.BA.60 | Ag2Te |
| โ | Covellite | 2.CA.05a | CuS |
| โ | Sphalerite | 2.CB.05a | ZnS |
| โ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| โ | Cubanite | 2.CB.55a | CuFe2S3 |
| โ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| โ | Mackinawite | 2.CC.25 | FeS |
| โ | Molybdenite | 2.EA.30 | MoS2 |
| โ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| โ | Goethite | 4.00. | Fe3+O(OH) |
| โ | Hematite | 4.CB.05 | Fe2O3 |
| โ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| โ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| โ | Chalcanthite | 7.CB.20 | CuSO4 ยท 5H2O |
| โ | Melanterite | 7.CB.35 | Fe2+(H2O)6SO4 ยท H2O |
| โ | Powellite | 7.GA.05 | Ca(MoO4) |
| โ | Scheelite | 7.GA.05 | Ca(WO4) |
| โ | Cuprotungstite | 7.GB.15 | Cu2(WO4)(OH)2 |
| โ | Ferrimolybdite | 7.GB.30 | Fe2(MoO4)3 ยท nH2O |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| โ | Pseudomalachite | 8.BD.05 | Cu5(PO4)2(OH)4 |
| โ | Metatorbernite | 8.EB.10 | Cu(UO2)2(PO4)2 ยท 8H2O |
| โ | Metazeunerite | 8.EB.10 | Cu(UO2)2(AsO4)2 ยท 8H2O |
| Group 9 - Silicates | |||
| โ | Cuprosklodowskite | 9.AK.10 | Cu(UO2)2(SiO3OH)2 ยท 6H2O |
| โ | Dravite | 9.CK.05 | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
| โ | Schorl | 9.CK.05 | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
| โ | Chrysocolla | 9.ED.20 | Cu2-xAlx(H2-xSi2O5)(OH)4 ยท nH2O, x < 1 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | โ Chalcanthite | CuSO4 · 5H2O |
| H | โ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| H | โ Cuprosklodowskite | Cu(UO2)2(SiO3OH)2 · 6H2O |
| H | โ Cuprotungstite | Cu2(WO4)(OH)2 |
| H | โ Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
| H | โ Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| H | โ Goethite | Fe3+O(OH) |
| H | โ Malachite | Cu2(CO3)(OH)2 |
| H | โ Melanterite | Fe2+(H2O)6SO4 · H2O |
| H | โ Metatorbernite | Cu(UO2)2(PO4)2 · 8H2O |
| H | โ Metazeunerite | Cu(UO2)2(AsO4)2 · 8H2O |
| H | โ Pseudomalachite | Cu5(PO4)2(OH)4 |
| H | โ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| B | Boron | |
| B | โ Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
| B | โ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| C | Carbon | |
| C | โ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | โ Chalcanthite | CuSO4 · 5H2O |
| O | โ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| O | โ Cuprosklodowskite | Cu(UO2)2(SiO3OH)2 · 6H2O |
| O | โ Cuprotungstite | Cu2(WO4)(OH)2 |
| O | โ Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
| O | โ Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| O | โ Goethite | Fe3+O(OH) |
| O | โ Hematite | Fe2O3 |
| O | โ Malachite | Cu2(CO3)(OH)2 |
| O | โ Melanterite | Fe2+(H2O)6SO4 · H2O |
| O | โ Metatorbernite | Cu(UO2)2(PO4)2 · 8H2O |
| O | โ Metazeunerite | Cu(UO2)2(AsO4)2 · 8H2O |
| O | โ Powellite | Ca(MoO4) |
| O | โ Pseudomalachite | Cu5(PO4)2(OH)4 |
| O | โ Quartz | SiO2 |
| O | โ Scheelite | Ca(WO4) |
| O | โ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Na | Sodium | |
| Na | โ Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
| Na | โ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Mg | Magnesium | |
| Mg | โ Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | Aluminium | |
| Al | โ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Al | โ Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
| Al | โ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Si | Silicon | |
| Si | โ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | โ Cuprosklodowskite | Cu(UO2)2(SiO3OH)2 · 6H2O |
| Si | โ Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
| Si | โ Quartz | SiO2 |
| Si | โ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| P | Phosphorus | |
| P | โ Metatorbernite | Cu(UO2)2(PO4)2 · 8H2O |
| P | โ Pseudomalachite | Cu5(PO4)2(OH)4 |
| S | Sulfur | |
| S | โ Chalcopyrite | CuFeS2 |
| S | โ Chalcanthite | CuSO4 · 5H2O |
| S | โ Chalcocite | Cu2S |
| S | โ Covellite | CuS |
| S | โ Cubanite | CuFe2S3 |
| S | โ Mackinawite | FeS |
| S | โ Melanterite | Fe2+(H2O)6SO4 · H2O |
| S | โ Molybdenite | MoS2 |
| S | โ Pyrite | FeS2 |
| S | โ Pyrrhotite | Fe1-xS |
| S | โ Sphalerite | ZnS |
| Ca | Calcium | |
| Ca | โ Powellite | Ca(MoO4) |
| Ca | โ Scheelite | Ca(WO4) |
| Fe | Iron | |
| Fe | โ Chalcopyrite | CuFeS2 |
| Fe | โ Cubanite | CuFe2S3 |
| Fe | โ Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| Fe | โ Goethite | Fe3+O(OH) |
| Fe | โ Hematite | Fe2O3 |
| Fe | โ Mackinawite | FeS |
| Fe | โ Melanterite | Fe2+(H2O)6SO4 · H2O |
| Fe | โ Pyrite | FeS2 |
| Fe | โ Pyrrhotite | Fe1-xS |
| Fe | โ Schorl | NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH) |
| Cu | Copper | |
| Cu | โ Chalcopyrite | CuFeS2 |
| Cu | โ Chalcanthite | CuSO4 · 5H2O |
| Cu | โ Chalcocite | Cu2S |
| Cu | โ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Cu | โ Covellite | CuS |
| Cu | โ Cubanite | CuFe2S3 |
| Cu | โ Cuprosklodowskite | Cu(UO2)2(SiO3OH)2 · 6H2O |
| Cu | โ Cuprotungstite | Cu2(WO4)(OH)2 |
| Cu | โ Malachite | Cu2(CO3)(OH)2 |
| Cu | โ Metatorbernite | Cu(UO2)2(PO4)2 · 8H2O |
| Cu | โ Metazeunerite | Cu(UO2)2(AsO4)2 · 8H2O |
| Cu | โ Pseudomalachite | Cu5(PO4)2(OH)4 |
| Zn | Zinc | |
| Zn | โ Sphalerite | ZnS |
| As | Arsenic | |
| As | โ Metazeunerite | Cu(UO2)2(AsO4)2 · 8H2O |
| Mo | Molybdenum | |
| Mo | โ Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| Mo | โ Molybdenite | MoS2 |
| Mo | โ Powellite | Ca(MoO4) |
| Ag | Silver | |
| Ag | โ Hessite | Ag2Te |
| Te | Tellurium | |
| Te | โ Hessite | Ag2Te |
| W | Tungsten | |
| W | โ Cuprotungstite | Cu2(WO4)(OH)2 |
| W | โ Scheelite | Ca(WO4) |
| Bi | Bismuth | |
| Bi | โ Native Bismuth | Bi |
| U | Uranium | |
| U | โ Cuprosklodowskite | Cu(UO2)2(SiO3OH)2 · 6H2O |
| U | โ Metatorbernite | Cu(UO2)2(PO4)2 · 8H2O |
| U | โ Metazeunerite | Cu(UO2)2(AsO4)2 · 8H2O |
Other Databases
| Link to USGS MRDS: | 10115901 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Northern Basin and RangeWide Rift
- Shoofly-Olds Ferry DomainDomain
USA
- California
- Diamond MountainsMountain Range
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060630588
Bramel, Hadley R., Heyl, George R., Cox, Manning W., Ransome, Alfred L., Eric, John H., Wyant, Donald G. (1948) Copper in California. Bulletin 144. California State Mining Bureau p.288
Mohawk Mine, Adams Peak, Last Chance Mining District, Plumas County, California, USA