Vote for your favorite mineral in #MinCup26! - Bournonite vs. Vesuvianite
Cogwheels of bournonite are up against colourful vesuvianite.
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 TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced 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 QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Flagstaff Hill, Salmon Falls Mining District (Flagstaff Hill area), El Dorado County, California, USAi
Regional Level Types
Flagstaff HillHill
Salmon Falls Mining District (Flagstaff Hill area)Mining District
El Dorado CountyCounty
CaliforniaState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
02327480017272302302831.jpg
Uvarovite, etc.

Farmer Swanton Mine, Flagstaff Hill, Salmon Falls Mining District, El Dorado County, California, USA
06784230017730306811505.jpg
Chromite-Magnesiochromite Series

Pillikin Mine area 3, Pilliken Mine, Flagstaff Hill, Salmon Falls Mining District, El Dorado County, California, USA
07995710017272333154934.jpg
Magnesite

Pillikin Mine area 3, Pilliken Mine, Flagstaff Hill, Salmon Falls Mining District, El Dorado County, California, USA
02327480017272302302831.jpg
Uvarovite, etc.

Farmer Swanton Mine, Flagstaff Hill, Salmon Falls Mining District, El Dorado County, California, USA
02425330017730306416244.jpg
Chromite-Magnesiochromite Series

Pillikin Mine area 3, Pilliken Mine, Flagstaff Hill, Salmon Falls Mining District, El Dorado County, California, USA
01175950017272092958582.jpg
Magnesite

Pillikin Mine area 3, Pilliken Mine, Flagstaff Hill, Salmon Falls Mining District, El Dorado County, California, USA
02327480017272302302831.jpg
Uvarovite, etc.

Farmer Swanton Mine, Flagstaff Hill, Salmon Falls Mining District, El Dorado County, California, USA
06784230017730306811505.jpg
Chromite-Magnesiochromite Series

Pillikin Mine area 3, Pilliken Mine, Flagstaff Hill, Salmon Falls Mining District, El Dorado County, California, USA
Latitude & Longitude (WGS84):
38° 46' 4'' North , 121° 5' 2'' West
Latitude & Longitude (decimal):
38.76778,-121.08389
GRN:
N26W69
Type:
Hill
Köppen climate type:
Csa : Hot-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Granite Bay20,402 (2011)6.9km
El Dorado Hills42,108 (2011)9.1km
Loomis6,733 (2017)11.2km
Penryn831 (2011)11.9km
Newcastle1,224 (2011)12.6km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Roseville Rock RollersRoseville, California18km
El Dorado County Mineral and Gem SocietyPlacerville, California25km
Gold Country Treasure SeekersPlacerville, California25km
Fossils for Fun Society, Inc.North Highlands, California27km
Sacramento Valley Detecting BuffsNorth Highlands, California27km
Mindat Locality ID:
264393
Long-form identifier:
mindat:1:2:264393:2
GUID (UUID V4):
0


A summit.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

18 valid minerals.

Detailed Mineral List:

ⓘ Antigorite
Formula: Mg3(Si2O5)(OH)4
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
Localities:
Dobbas Mine (Dobbas group), Flagstaff Hill, Salmon Falls Mining District (Flagstaff Hill area), El Dorado County, California, USA
Steele Mine (Steel deposit), Pilliken Mine (Pillikin Mine; Pillikan Mine; Pilliken Chrome Mine), Flagstaff Hill, Salmon Falls Mining District (Flagstaff Hill area), El Dorado County, California, USA
Pillikin Mine area 3 (West Basin), Pilliken Mine (Pillikin Mine; Pillikan Mine; Pilliken Chrome Mine), Flagstaff Hill, Salmon Falls Mining District (Flagstaff Hill area), El Dorado County, California, USA
Pillikin Mine area 5 (Placer Chrome Company workings; Placer Chrome Company Mine; Placer Chrome Mine), Pilliken Mine (Pillikin Mine; Pillikan Mine; Pilliken Chrome Mine), Flagstaff Hill, Salmon Falls Mining District (Flagstaff Hill area), El Dorado County, California, USA
ⓘ Chromite
Formula: Fe2+Cr3+2O4
Localities: Reported from at least 17 localities in this region.
ⓘ 'Chromite-Magnesiochromite Series'
References:
Pavel M. Kartashov - look https://www.mindat.org/mesg-821658.htmlIdentified by Pavel Kartashov: Inferred (explain how)
ⓘ Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
ⓘ Clinochlore var. Chromium-bearing Clinochlore
Formula: Mg5(Al,Cr)2Si3O10(OH)8
ⓘ Clinochlore var. Pennine
Formula: Mg5Al(AlSi3O10)(OH)8
ⓘ Clinochlore var. Ripidolite
Formula: (Mg,Fe,Al)6(Si,Al)4O10(OH)8
ⓘ Clinochlore var. Sheridanite
Formula: (Mg,Al,Fe)6(Si,Al)4O10(OH)8
ⓘ 'Diallage'
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ Enstatite
Formula: Mg2Si2O6
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ 'Fayalite-Forsterite Series'
ⓘ Galena
Formula: PbS
ⓘ 'Garnierite'
ⓘ Magnesiochromite
Formula: MgCr2O4
Localities: Reported from at least 6 localities in this region.
ⓘ Magnesite
Formula: MgCO3
Localities: Reported from at least 6 localities in this region.
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Népouite
Formula: Ni3Si2O5(OH)4
Description: Occurs in laterite soils.
ⓘ Opal
Formula: SiO2 · nH2O
ⓘ Pyrite
Formula: FeS2
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
ⓘ Rectorite
Formula: (Na,Ca)Al4((Si,Al)8O20)(OH)4 · 2H2O
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Sphalerite
Formula: ZnS
ⓘ Talc
Formula: Mg3Si4O10(OH)2
Localities: Reported from at least 8 localities in this region.
ⓘ Uvarovite
Formula: Ca3Cr2(SiO4)3

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘMagnesiochromite4.BB.05MgCr2O4
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘOpal4.DA.10SiO2 · nH2O
Group 5 - Nitrates and Carbonates
ⓘMagnesite5.AB.05MgCO3
Group 9 - Silicates
ⓘUvarovite9.AD.25Ca3Cr2(SiO4)3
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘEnstatite9.DA.05Mg2Si2O6
ⓘDiopside9.DA.15CaMgSi2O6
ⓘTalc9.EC.05Mg3Si4O10(OH)2
ⓘClinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
ⓘvar. Chromium-bearing Clinochlore9.EC.55Mg5(Al,Cr)2Si3O10(OH)8
ⓘvar. Ripidolite9.EC.55(Mg,Fe,Al)6(Si,Al)4O10(OH)8
ⓘvar. Pennine9.EC.55Mg5Al(AlSi3O10)(OH)8
ⓘvar. Sheridanite9.EC.55(Mg,Al,Fe)6(Si,Al)4O10(OH)8
ⓘRectorite9.EC.60(Na,Ca)Al4((Si,Al)8O20)(OH)4 · 2H2O
ⓘAntigorite9.ED.15Mg3(Si2O5)(OH)4
ⓘNépouite9.ED.15Ni3Si2O5(OH)4
Unclassified
ⓘ'Chlorite Group'-
ⓘ'Diallage'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Chromite-Magnesiochromite Series'-
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'Garnierite'-
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ AntigoriteMg3(Si2O5)(OH)4
Hⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Hⓘ NépouiteNi3Si2O5(OH)4
Hⓘ OpalSiO2 · nH2O
Hⓘ Rectorite(Na,Ca)Al4((Si,Al)8O20)(OH)4 · 2H2O
Hⓘ Clinochlore var. Ripidolite(Mg,Fe,Al)6(Si,Al)4O10(OH)8
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
Hⓘ Clinochlore var. Sheridanite(Mg,Al,Fe)6(Si,Al)4O10(OH)8
CCarbon
Cⓘ MagnesiteMgCO3
OOxygen
Oⓘ AntigoriteMg3(Si2O5)(OH)4
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Oⓘ DiopsideCaMgSi2O6
Oⓘ EnstatiteMg2Si2O6
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Oⓘ MagnesiteMgCO3
Oⓘ MagnesiochromiteMgCr2O4
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ NépouiteNi3Si2O5(OH)4
Oⓘ OpalSiO2 · nH2O
Oⓘ Rectorite(Na,Ca)Al4((Si,Al)8O20)(OH)4 · 2H2O
Oⓘ Clinochlore var. Ripidolite(Mg,Fe,Al)6(Si,Al)4O10(OH)8
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ UvaroviteCa3Cr2(SiO4)3
Oⓘ Fayalite-Forsterite Series
Oⓘ Chromite-Magnesiochromite Series
Oⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
Oⓘ Pyroxene GroupADSi2O6
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
Oⓘ Clinochlore var. Sheridanite(Mg,Al,Fe)6(Si,Al)4O10(OH)8
NaSodium
Naⓘ Rectorite(Na,Ca)Al4((Si,Al)8O20)(OH)4 · 2H2O
MgMagnesium
Mgⓘ AntigoriteMg3(Si2O5)(OH)4
Mgⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ EnstatiteMg2Si2O6
Mgⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Mgⓘ MagnesiteMgCO3
Mgⓘ MagnesiochromiteMgCr2O4
Mgⓘ Clinochlore var. Ripidolite(Mg,Fe,Al)6(Si,Al)4O10(OH)8
Mgⓘ TalcMg3Si4O10(OH)2
Mgⓘ Fayalite-Forsterite Series
Mgⓘ Chromite-Magnesiochromite Series
Mgⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
Mgⓘ Clinochlore var. Sheridanite(Mg,Al,Fe)6(Si,Al)4O10(OH)8
AlAluminium
Alⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Alⓘ Rectorite(Na,Ca)Al4((Si,Al)8O20)(OH)4 · 2H2O
Alⓘ Clinochlore var. Ripidolite(Mg,Fe,Al)6(Si,Al)4O10(OH)8
Alⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
Alⓘ Clinochlore var. Sheridanite(Mg,Al,Fe)6(Si,Al)4O10(OH)8
SiSilicon
Siⓘ AntigoriteMg3(Si2O5)(OH)4
Siⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Siⓘ DiopsideCaMgSi2O6
Siⓘ EnstatiteMg2Si2O6
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Siⓘ NépouiteNi3Si2O5(OH)4
Siⓘ OpalSiO2 · nH2O
Siⓘ Rectorite(Na,Ca)Al4((Si,Al)8O20)(OH)4 · 2H2O
Siⓘ Clinochlore var. Ripidolite(Mg,Fe,Al)6(Si,Al)4O10(OH)8
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ UvaroviteCa3Cr2(SiO4)3
Siⓘ Fayalite-Forsterite Series
Siⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
Siⓘ Pyroxene GroupADSi2O6
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
Siⓘ Clinochlore var. Sheridanite(Mg,Al,Fe)6(Si,Al)4O10(OH)8
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ GalenaPbS
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
CaCalcium
Caⓘ DiopsideCaMgSi2O6
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ Rectorite(Na,Ca)Al4((Si,Al)8O20)(OH)4 · 2H2O
Caⓘ UvaroviteCa3Cr2(SiO4)3
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
Crⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Crⓘ MagnesiochromiteMgCr2O4
Crⓘ UvaroviteCa3Cr2(SiO4)3
Crⓘ Chromite-Magnesiochromite Series
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ PyriteFeS2
Feⓘ Clinochlore var. Ripidolite(Mg,Fe,Al)6(Si,Al)4O10(OH)8
Feⓘ Fayalite-Forsterite Series
Feⓘ Chromite-Magnesiochromite Series
Feⓘ Clinochlore var. Sheridanite(Mg,Al,Fe)6(Si,Al)4O10(OH)8
NiNickel
Niⓘ NépouiteNi3Si2O5(OH)4
CuCopper
Cuⓘ ChalcopyriteCuFeS2
ZnZinc
Znⓘ SphaleriteZnS
PbLead
Pbⓘ GalenaPbS

Localities in this Region

USA
USA

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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.
Quick NavTopMineral ListLocalities in RegionOther Regions
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 4, 2026 14:50:36 Page updated: March 9, 2026 05:28:11
Go to top of page