Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Mohawk Mine, Adams Peak, Last Chance Mining District, Plumas County, California, USAi
Regional Level Types
Mohawk MineMine
Adams PeakPeak
Last Chance Mining DistrictMining District
Plumas CountyCounty
CaliforniaState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
39° 54' 7'' North , 120° 8' 23'' West
Latitude & Longitude (decimal):
39.90206,-120.13979
GeoHash:
G#: 9r4dfpuy7
GRN:
N27W67
Type:
Mine
KΓΆppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Chilcoot-Vinton454 (2011)10.6km
Doyle678 (2011)14.3km
Beckwourth432 (2017)22.3km
Loyalton702 (2017)26.5km
Patton Village702 (2011)26.6km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Comstock Gold ProspectorsReno, Nevada50km
Reno Gem and Mineral SocietyReno, Nevada50km
Mindat Locality ID:
25469
Long-form identifier:
mindat:1:2:25469:5
GUID (UUID V4):
0122dbb4-171b-4713-9fea-9a6c279f39d0


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 Elements

Mineral List


28 valid minerals.

Detailed Mineral List:

β“˜ Bismuth
Formula: Bi
β“˜ Chalcanthite
Formula: CuSO4 · 5H2O
β“˜ Chalcocite
Formula: Cu2S
β“˜ Chalcopyrite
Formula: CuFeS2
β“˜ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
β“˜ Covellite
Formula: CuS
β“˜ Cubanite
Formula: CuFe2S3
β“˜ Cuprosklodowskite
Formula: Cu(UO2)2(SiO3OH)2 · 6H2O
β“˜ Cuprotungstite
Formula: Cu2(WO4)(OH)2
β“˜ Dravite
Formula: NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜ Ferrimolybdite
Formula: Fe2(MoO4)3 · nH2O
β“˜ Goethite
Formula: Ξ±-Fe3+O(OH)
β“˜ Hematite
Formula: Fe2O3
β“˜ Hessite
Formula: Ag2Te
β“˜ Mackinawite
Formula: FeS
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
β“˜ Melanterite
Formula: Fe2+(H2O)6SO4 · H2O
β“˜ Metatorbernite
Formula: Cu(UO2)2(PO4)2 · 8H2O
Description: Occurs in quartz veins and shear zones.
β“˜ Metazeunerite
Formula: Cu(UO2)2(AsO4)2 · 8H2O
β“˜ Molybdenite
Formula: MoS2
β“˜ Powellite
Formula: Ca(MoO4)
β“˜ Pseudomalachite
Formula: Cu5(PO4)2(OH)4
β“˜ Pyrite
Formula: FeS2
β“˜ Pyrrhotite
Formula: Fe1-xS
β“˜ Quartz
Formula: SiO2
β“˜ Scheelite
Formula: Ca(WO4)
β“˜ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜ Sphalerite
Formula: ZnS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Bismuth1.CA.05Bi
Group 2 - Sulphides and Sulfosalts
β“˜Chalcocite2.BA.05Cu2S
β“˜Hessite2.BA.60Ag2Te
β“˜Covellite2.CA.05aCuS
β“˜Sphalerite2.CB.05aZnS
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Cubanite2.CB.55aCuFe2S3
β“˜Pyrrhotite2.CC.10Fe1-xS
β“˜Mackinawite2.CC.25FeS
β“˜Molybdenite2.EA.30MoS2
β“˜Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
β“˜Goethite4.00.Ξ±-Fe3+O(OH)
β“˜Hematite4.CB.05Fe2O3
β“˜Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Chalcanthite7.CB.20CuSO4 Β· 5H2O
β“˜Melanterite7.CB.35Fe2+(H2O)6SO4 Β· H2O
β“˜Scheelite7.GA.05Ca(WO4)
β“˜Powellite7.GA.05Ca(MoO4)
β“˜Cuprotungstite7.GB.15Cu2(WO4)(OH)2
β“˜Ferrimolybdite7.GB.30Fe2(MoO4)3 Β· nH2O
Group 8 - Phosphates, Arsenates and Vanadates
β“˜Pseudomalachite8.BD.05Cu5(PO4)2(OH)4
β“˜Metatorbernite8.EB.10Cu(UO2)2(PO4)2 Β· 8H2O
β“˜Metazeunerite8.EB.10Cu(UO2)2(AsO4)2 Β· 8H2O
Group 9 - Silicates
β“˜Cuprosklodowskite9.AK.10Cu(UO2)2(SiO3OH)2 Β· 6H2O
β“˜Dravite9.CK.05NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜Schorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 Β· nH2O, x < 1

List of minerals for each chemical element

HHydrogen
Hβ“˜ ChalcanthiteCuSO4 · 5H2O
Hβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Hβ“˜ CuprosklodowskiteCu(UO2)2(SiO3OH)2 · 6H2O
Hβ“˜ CuprotungstiteCu2(WO4)(OH)2
Hβ“˜ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Hβ“˜ FerrimolybditeFe2(MoO4)3 · nH2O
Hβ“˜ GoethiteΞ±-Fe3+O(OH)
Hβ“˜ MalachiteCu2(CO3)(OH)2
Hβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Hβ“˜ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Hβ“˜ MetazeuneriteCu(UO2)2(AsO4)2 · 8H2O
Hβ“˜ PseudomalachiteCu5(PO4)2(OH)4
Hβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
BBoron
Bβ“˜ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Bβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
Cβ“˜ MalachiteCu2(CO3)(OH)2
OOxygen
Oβ“˜ ChalcanthiteCuSO4 · 5H2O
Oβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Oβ“˜ CuprosklodowskiteCu(UO2)2(SiO3OH)2 · 6H2O
Oβ“˜ CuprotungstiteCu2(WO4)(OH)2
Oβ“˜ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Oβ“˜ FerrimolybditeFe2(MoO4)3 · nH2O
Oβ“˜ GoethiteΞ±-Fe3+O(OH)
Oβ“˜ HematiteFe2O3
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Oβ“˜ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Oβ“˜ MetazeuneriteCu(UO2)2(AsO4)2 · 8H2O
Oβ“˜ PowelliteCa(MoO4)
Oβ“˜ PseudomalachiteCu5(PO4)2(OH)4
Oβ“˜ QuartzSiO2
Oβ“˜ ScheeliteCa(WO4)
Oβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
NaSodium
Naβ“˜ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Naβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mgβ“˜ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Alβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Alβ“˜ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Alβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Siβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Siβ“˜ CuprosklodowskiteCu(UO2)2(SiO3OH)2 · 6H2O
Siβ“˜ DraviteNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Siβ“˜ QuartzSiO2
Siβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
PPhosphorus
Pβ“˜ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Pβ“˜ PseudomalachiteCu5(PO4)2(OH)4
SSulfur
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ ChalcanthiteCuSO4 · 5H2O
Sβ“˜ ChalcociteCu2S
Sβ“˜ CovelliteCuS
Sβ“˜ CubaniteCuFe2S3
Sβ“˜ MackinawiteFeS
Sβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Sβ“˜ MolybdeniteMoS2
Sβ“˜ PyriteFeS2
Sβ“˜ PyrrhotiteFe1-xS
Sβ“˜ SphaleriteZnS
CaCalcium
Caβ“˜ PowelliteCa(MoO4)
Caβ“˜ ScheeliteCa(WO4)
FeIron
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ CubaniteCuFe2S3
Feβ“˜ FerrimolybditeFe2(MoO4)3 · nH2O
Feβ“˜ GoethiteΞ±-Fe3+O(OH)
Feβ“˜ HematiteFe2O3
Feβ“˜ MackinawiteFeS
Feβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Feβ“˜ PyriteFeS2
Feβ“˜ PyrrhotiteFe1-xS
Feβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
CuCopper
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ ChalcanthiteCuSO4 · 5H2O
Cuβ“˜ ChalcociteCu2S
Cuβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cuβ“˜ CovelliteCuS
Cuβ“˜ CubaniteCuFe2S3
Cuβ“˜ CuprosklodowskiteCu(UO2)2(SiO3OH)2 · 6H2O
Cuβ“˜ CuprotungstiteCu2(WO4)(OH)2
Cuβ“˜ MalachiteCu2(CO3)(OH)2
Cuβ“˜ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Cuβ“˜ MetazeuneriteCu(UO2)2(AsO4)2 · 8H2O
Cuβ“˜ PseudomalachiteCu5(PO4)2(OH)4
ZnZinc
Znβ“˜ SphaleriteZnS
AsArsenic
Asβ“˜ MetazeuneriteCu(UO2)2(AsO4)2 · 8H2O
MoMolybdenum
Moβ“˜ FerrimolybditeFe2(MoO4)3 · nH2O
Moβ“˜ MolybdeniteMoS2
Moβ“˜ PowelliteCa(MoO4)
AgSilver
Agβ“˜ HessiteAg2Te
TeTellurium
Teβ“˜ HessiteAg2Te
WTungsten
Wβ“˜ CuprotungstiteCu2(WO4)(OH)2
Wβ“˜ ScheeliteCa(WO4)
BiBismuth
Biβ“˜ BismuthBi
UUranium
Uβ“˜ CuprosklodowskiteCu(UO2)2(SiO3OH)2 · 6H2O
Uβ“˜ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Uβ“˜ MetazeuneriteCu(UO2)2(AsO4)2 · 8H2O

Other Databases

Link to USGS MRDS:10115901

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate
USA

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

(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060630588
MacBoyle, Errol (1918), Mines and Mineral Resources of Plumas Co. California Division of Mines and Geology (Report 16): 16: 60-61.
Averill, Charles V. (1937), Mineral resources of Plumas County: California Journal of Mines and Geology, California Division Mines (Report 33): 33(2): 133.
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
Troxel, Bennie Wyatt, Stinson, M.C., and Chesterman, C.W. (1957) Uranium. California Division of Mines Bulletin 176: 673.
King, R.U. (1966), California Mineral Resources; California Division of Mines and Geology Bulletin 191.
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
Dunning, G. E., Cooper, J. F. (2005) Mineralogy of the Spring Creek area, Last Chance mining district, Plumas County, California. Axis, 1 (1) 1-30
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
www.mindat.org (n.d.) https://www.mindat.org/mesg-628095.html
Quick NavTopMineral ListOther DatabasesOther RegionsReferences
 
Mineral and/or Locality  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are Β© OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 24, 2024 00:05:34 Page updated: March 23, 2024 23:01:55
Go to top of page