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Placer Co., California, USA

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Neighbouring regions:
Locality type:County


NOTE: The USGS staff reporter(s) who worked on the localities in this county repeatedly refer to the mine workings as including one or more "tunnel(s)." A tunnel is technically a through openings with 2 portals. In all likelyhood, the majority of these "tunnels" are probably adits (one portal).

Alternative Label Names

This is a list of additional names that have been recorded for mineral labels associated with this locality in the minID database. This may include previous versions of the locality name hierarchy from mindat.org, data entry errors, and it may also include unconfirmed sublocality names or other names that can only be matched to this level.

Placer County, California, United States

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity 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-localities

69 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

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

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Alphabetical List Tree Diagram

Detailed Mineral List:

Acanthite
Formula: Ag2S
Albite
Formula: Na(AlSi3O8)
Alunogen
Formula: Al2(SO4)3 · 17H2O
'Amphibole Asbestos'
'Amphibole Supergroup'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Anthophyllite
Formula: ☐{Mg2}{Mg5}(Si8O22)(OH)2
Antigorite
Formula: Mg3(Si2O5)(OH)4
Arsenopyrite
Formula: FeAsS
'Asbestos'
Localities: Reported from at least 8 localities in this region.
'Axinite Group'
Azurite
Formula: Cu3(CO3)2(OH)2
Brookite
Formula: TiO2
Calcite
Formula: CaCO3
Chalcanthite
Formula: CuSO4 · 5H2O
Chalcocite
Formula: Cu2S
Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 25 localities in this region.
Chlorargyrite
Formula: AgCl
'Chlorite Group'
Localities: Reported from at least 6 localities in this region.
Chromite
Formula: Fe2+Cr3+2O4
Localities: Reported from at least 114 localities in this region.
Chrysotile
Formula: Mg3(Si2O5)(OH)4
'commodity:Clay'
'Clays'
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Clinochlore var: Chromian Clinochlore
Formula: Mg5(Al,Cr)2Si3O10(OH)8
Clinochlore var: Pennine
Formula: Mg5Al(AlSi3O10)(OH)8
Cobaltite
Formula: CoAsS
Copper
Formula: Cu
Coquimbite
Formula: Fe2-xAlx(SO4)3 · 9H2O, x ~0.5
Cuprite
Formula: Cu2O
Diamond
Formula: C
'Diatomite'
Formula: SiO2 · nH2O
Reference: Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 282.
Diopside
Formula: CaMgSi2O6
Dolomite
Formula: CaMg(CO3)2
'Electrum'
Formula: (Au, Ag)
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
'Fayalite-Forsterite Series'
Localities: Reported from at least 9 localities in this region.
'Feldspar Group'
'Fulgurite'
Formula: SiO2
Reference: Ed Richardson collection
Galena
Formula: PbS
Localities: Reported from at least 35 localities in this region.
'Garnet Group'
Formula: X3Z2(SiO4)3
Gold
Formula: Au
Reference: MinRec 31:19
Gold
Formula: Au
Localities: Reported from at least 388 localities in this region.
'commodity:Gold'
Formula: Au
Localities: Reported from at least 29 localities in this region.
'commodity:Granite'
Graphite
Formula: C
Grossular
Formula: Ca3Al2(SiO4)3
Grossular var: Hessonite
Formula: Ca3Al2(SiO4)3
Hausmannite
Formula: Mn2+Mn3+2O4
Hematite
Formula: Fe2O3
Hercynite
Formula: Fe2+Al2O4
Hercynite var: Picotite
Formula: (Fe,Mg)(Al,Cr)2O4
'Hornblende'
Ilmenite
Formula: Fe2+TiO3
'commodity:Iron'
Formula: Fe
Kalinite
Formula: KAl(SO4)2 · 11H2O
Kaolinite
Formula: Al2(Si2O5)(OH)4
'K Feldspar'
'K Feldspar var: Adularia'
Formula: KAlSi3O8
'commodity:Lead'
Formula: Pb
Lechatelierite
Formula: SiO2
Reference: Ed Richardson collection
'Limestone'
'Limonite'
Formula: (Fe,O,OH,H2O)
Magnesiochromite
Formula: MgCr2O4
Magnesite
Formula: MgCO3
Localities: Reported from at least 10 localities in this region.
Magnetite
Formula: Fe2+Fe3+2O4
Localities: Reported from at least 7 localities in this region.
Malachite
Formula: Cu2(CO3)(OH)2
Localities: Reported from at least 6 localities in this region.
'Manganese Oxides'
Manganite
Formula: Mn3+O(OH)
Marcasite
Formula: FeS2
'Mariposite'
Formula: K(Al,Cr)2(Al,Si)4O10(OH)2
Millerite
Formula: NiS
Molybdenite
Formula: MoS2
'Monazite'
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Nontronite
Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Opal
Formula: SiO2 · nH2O
Reference: Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 282.
Osmium
Formula: (Os,Ir,Ru)
Osmium var: Iridosmine
Formula: (Os,Ir)
'Phengite'
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Platinum
Formula: Pt
'Psilomelane'
Pyrargyrite
Formula: Ag3SbS3
Pyrite
Formula: FeS2
Localities: Reported from at least 62 localities in this region.
Pyrolusite
Formula: Mn4+O2
'Pyroxene Group'
Localities: Reported from at least 9 localities in this region.
Quartz
Formula: SiO2
Localities: Reported from at least 207 localities in this region.
Quartz var: Chalcedony
Formula: SiO2
Quartz var: Rutilated Quartz
Formula: SiO2
Quartz var: Smoky Quartz
Formula: SiO2
Rhodochrosite
Formula: MnCO3
Reference: Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 320.
Rhodonite
Formula: Mn2+SiO3
Rutile
Formula: TiO2
Scheelite
Formula: Ca(WO4)
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Localities: Reported from at least 22 localities in this region.
'Shale'
Siderite
Formula: FeCO3
Silver
Formula: Ag
Localities: Reported from at least 6 localities in this region.
'Soapstone'
Sphalerite
Formula: ZnS
Localities: Reported from at least 10 localities in this region.
Stibnite
Formula: Sb2S3
Talc
Formula: Mg3Si4O10(OH)2
Localities: Reported from at least 6 localities in this region.
Tetrahedrite
Formula: Cu6[Cu4(Fe,Zn)2]Sb4S13
Localities: Reported from at least 8 localities in this region.
Thorite
Formula: Th(SiO4)
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Localities: Reported from at least 6 localities in this region.
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Uvarovite
Formula: Ca3Cr2(SiO4)3
Localities: Reported from at least 9 localities in this region.
Vesuvianite
Formula: (Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Zircon
Formula: Zr(SiO4)
Localities: Reported from at least 6 localities in this region.
'commodity:Zircon'

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Diamond1.CB.10aC
Electrum1.AA.05(Au, Ag)
Gold1.AA.05Au
Graphite1.CB.05aC
Osmium1.AF.05(Os,Ir,Ru)
var: Iridosmine1.AF.05(Os,Ir)
Platinum1.AF.10Pt
Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
'Acanthite'2.BA.35Ag2S
'Arsenopyrite'2.EB.20FeAsS
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Cobaltite2.EB.25CoAsS
Galena2.CD.10PbS
Marcasite2.EB.10aFeS2
Millerite2.CC.20NiS
Molybdenite2.EA.30MoS2
Pyrargyrite2.GA.05Ag3SbS3
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Stibnite2.DB.05Sb2S3
Tetrahedrite2.GB.05Cu6[Cu4(Fe,Zn)2]Sb4S13
Group 3 - Halides
Chlorargyrite3.AA.15AgCl
Group 4 - Oxides and Hydroxides
'Brookite'4.DD.10TiO2
Chromite4.BB.05Fe2+Cr3+2O4
Cuprite4.AA.10Cu2O
Hausmannite4.BB.10Mn2+Mn3+2O4
Hematite4.CB.05Fe2O3
Hercynite4.BB.05Fe2+Al2O4
var: Picotite4.BB.05(Fe,Mg)(Al,Cr)2O4
Ilmenite4.CB.05Fe2+TiO3
Lechatelierite4.DA.30SiO2
Magnesiochromite4.BB.05MgCr2O4
Magnetite4.BB.05Fe2+Fe3+2O4
Manganite4.FD.15Mn3+O(OH)
Opal4.DA.10SiO2 · nH2O
Pyrolusite4.DB.05Mn4+O2
Quartz4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
var: Rutilated Quartz4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
'Ankerite'5.AB.10Ca(Fe2+,Mg)(CO3)2
'Azurite'5.BA.05Cu3(CO3)2(OH)2
'Calcite'5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Magnesite5.AB.05MgCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Rhodochrosite5.AB.05MnCO3
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Alunogen'7.CB.45Al2(SO4)3 · 17H2O
'Chalcanthite'7.CB.20CuSO4 · 5H2O
Coquimbite7.CB.55Fe2-xAlx(SO4)3 · 9H2O, x ~0.5
Kalinite7.CC.15KAl(SO4)2 · 11H2O
Scheelite7.GA.05Ca(WO4)
Group 9 - Silicates
'Albite'9.FA.35Na(AlSi3O8)
'Anthophyllite'9.DE.05☐{Mg2}{Mg5}(Si8O22)(OH)2
'Antigorite'9.ED.15Mg3(Si2O5)(OH)4
Chrysotile9.ED.15Mg3(Si2O5)(OH)4
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
var: Chromian Clinochlore9.EC.55Mg5(Al,Cr)2Si3O10(OH)8
var: Pennine9.EC.55Mg5Al(AlSi3O10)(OH)8
Diopside9.DA.15CaMgSi2O6
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Grossular9.AD.25Ca3Al2(SiO4)3
var: Hessonite9.AD.25Ca3Al2(SiO4)3
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Nontronite9.EC.40Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Rhodonite9.DK.05Mn2+SiO3
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Talc9.EC.05Mg3Si4O10(OH)2
Thorite9.AD.30Th(SiO4)
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Uvarovite9.AD.25Ca3Cr2(SiO4)3
Vesuvianite9.BG.35(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Amphibole Asbestos'-
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Asbestos'-
'Axinite Group'-
Chlorite Group-
Clays-
Diatomite-SiO2 · nH2O
Fayalite-Forsterite Series-
Feldspar Group-
Fulgurite-SiO2
Garnet Group-X3Z2(SiO4)3
Hornblende-
K Feldspar-
'var: Adularia'-KAlSi3O8
Limestone-
Limonite-(Fe,O,OH,H2O)
Manganese Oxides-
Mariposite-K(Al,Cr)2(Al,Si)4O10(OH)2
Monazite-
Phengite-KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Psilomelane-
Pyroxene Group-
Serpentine Subgroup-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Shale-
Soapstone-
Tourmaline-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Gold1.1.1.1Au
Silver1.1.1.2Ag
Platinum Group Metals and Alloys
Osmium1.2.2.1(Os,Ir,Ru)
Platinum1.2.1.1Pt
Semi-metals and non-metals
Diamond1.3.6.1C
Graphite1.3.6.2C
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Acanthite2.4.1.1Ag2S
Chalcocite2.4.7.1Cu2S
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Millerite2.8.16.1NiS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 2:3
Stibnite2.11.2.1Sb2S3
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Cobaltite2.12.3.1CoAsS
Marcasite2.12.2.1FeS2
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
3 <ø < 4
Tetrahedrite3.3.6.1Cu6[Cu4(Fe,Zn)2]Sb4S13
ø = 3
Pyrargyrite3.4.1.2Ag3SbS3
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
A2X3
Hematite4.3.1.2Fe2O3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Brookite4.4.5.1TiO2
Pyrolusite4.4.1.4Mn4+O2
Rutile4.4.1.1TiO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Manganite6.1.3.1Mn3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Hausmannite7.2.7.1Mn2+Mn3+2O4
Hercynite7.2.1.3Fe2+Al2O4
Magnesiochromite7.2.3.1MgCr2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 9 - NORMAL HALIDES
AX
Chlorargyrite9.1.4.1AgCl
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Magnesite14.1.1.2MgCO3
Rhodochrosite14.1.1.4MnCO3
Siderite14.1.1.3FeCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AB(XO4)2·xH2O
Kalinite29.5.4.2KAl(SO4)2 · 11H2O
AXO4·xH2O
Chalcanthite29.6.7.1CuSO4 · 5H2O
A2(XO4)3·H2O
Alunogen29.8.6.1Al2(SO4)3 · 17H2O
Coquimbite29.8.3.1Fe2-xAlx(SO4)3 · 9H2O, x ~0.5
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Grossular51.4.3b.2Ca3Al2(SiO4)3
Uvarovite51.4.3b.3Ca3Cr2(SiO4)3
Insular SiO4 Groups Only with cations in >[6] coordination
Thorite51.5.2.3Th(SiO4)
Zircon51.5.2.1Zr(SiO4)
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Vesuvianite58.2.4.1(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Single-Width Unbranched Chains, W=1 with chains P=5
Rhodonite65.4.1.1Mn2+SiO3
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Anthophyllite66.1.2.1☐{Mg2}{Mg5}(Si8O22)(OH)2
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Antigorite71.1.2a.1Mg3(Si2O5)(OH)4
Chrysotile71.1.5.1Mg3(Si2O5)(OH)4
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Talc71.2.1.3Mg3Si4O10(OH)2
Sheets of 6-membered rings with 2:1 clays
Nontronite71.3.1a.3Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Rocks, etc.
'Amphibole Asbestos'-
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Asbestos'-
'Axinite Group'-
'Chlorite Group'-
'Clays'-
Clinochlore
var: Chromian Clinochlore
-Mg5(Al,Cr)2Si3O10(OH)8
var: Pennine-Mg5Al(AlSi3O10)(OH)8
'Diatomite'-SiO2 · nH2O
'Electrum'-(Au, Ag)
'Fayalite-Forsterite Series'-
'Feldspar Group'-
'Fulgurite'-SiO2
'Garnet Group'-X3Z2(SiO4)3
Grossular
var: Hessonite
-Ca3Al2(SiO4)3
Hercynite
var: Picotite
-(Fe,Mg)(Al,Cr)2O4
'Hornblende'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8
Kaolinite-Al2(Si2O5)(OH)4
Lechatelierite-SiO2
'Limestone'-
'Limonite'-(Fe,O,OH,H2O)
'Manganese Oxides'-
'Mariposite'-K(Al,Cr)2(Al,Si)4O10(OH)2
'Monazite'-
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
Osmium
var: Iridosmine
-(Os,Ir)
'Phengite'-KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
'Psilomelane'-
'Pyroxene Group'-
Quartz
var: Chalcedony
-SiO2
var: Rutilated Quartz-SiO2
var: Smoky Quartz-SiO2
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
'Shale'-
'Soapstone'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H AlunogenAl2(SO4)3 · 17H2O
H Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
H Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
H AntigoriteMg3(Si2O5)(OH)4
H AzuriteCu3(CO3)2(OH)2
H ChalcanthiteCuSO4 · 5H2O
H Clinochlore (var: Chromian Clinochlore)Mg5(Al,Cr)2Si3O10(OH)8
H ChrysotileMg3(Si2O5)(OH)4
H ClinochloreMg5Al(AlSi3O10)(OH)8
H CoquimbiteFe2-xAlx(SO4)3 · 9H2O, x ~0.5
H DiatomiteSiO2 · nH2O
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H KaliniteKAl(SO4)2 · 11H2O
H KaoliniteAl2(Si2O5)(OH)4
H Limonite(Fe,O,OH,H2O)
H MalachiteCu2(CO3)(OH)2
H ManganiteMn3+O(OH)
H MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
H OpalSiO2 · nH2O
H Clinochlore (var: Pennine)Mg5Al(AlSi3O10)(OH)8
H PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
H TalcMg3Si4O10(OH)2
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
H Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
B Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C AzuriteCu3(CO3)2(OH)2
C CalciteCaCO3
C DiamondC
C DolomiteCaMg(CO3)2
C GraphiteC
C MagnesiteMgCO3
C MalachiteCu2(CO3)(OH)2
C RhodochrositeMnCO3
C SideriteFeCO3
OOxygen
O K Feldspar (var: Adularia)KAlSi3O8
O AlbiteNa(AlSi3O8)
O AlunogenAl2(SO4)3 · 17H2O
O Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O AnkeriteCa(Fe2+,Mg)(CO3)2
O Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
O AntigoriteMg3(Si2O5)(OH)4
O AzuriteCu3(CO3)2(OH)2
O BrookiteTiO2
O CalciteCaCO3
O ChalcanthiteCuSO4 · 5H2O
O Quartz (var: Chalcedony)SiO2
O Clinochlore (var: Chromian Clinochlore)Mg5(Al,Cr)2Si3O10(OH)8
O ChromiteFe2+Cr23+O4
O ChrysotileMg3(Si2O5)(OH)4
O ClinochloreMg5Al(AlSi3O10)(OH)8
O CoquimbiteFe2-xAlx(SO4)3 · 9H2O, x ~0.5
O CupriteCu2O
O DiatomiteSiO2 · nH2O
O DiopsideCaMgSi2O6
O DolomiteCaMg(CO3)2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O FulguriteSiO2
O Garnet GroupX3Z2(SiO4)3
O GrossularCa3Al2(SiO4)3
O HausmanniteMn2+Mn23+O4
O HematiteFe2O3
O HercyniteFe2+Al2O4
O Grossular (var: Hessonite)Ca3Al2(SiO4)3
O IlmeniteFe2+TiO3
O KaliniteKAl(SO4)2 · 11H2O
O KaoliniteAl2(Si2O5)(OH)4
O LechatelieriteSiO2
O Limonite(Fe,O,OH,H2O)
O MagnesiochromiteMgCr2O4
O MagnesiteMgCO3
O MagnetiteFe2+Fe23+O4
O MalachiteCu2(CO3)(OH)2
O ManganiteMn3+O(OH)
O MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
O MuscoviteKAl2(AlSi3O10)(OH)2
O NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
O OpalSiO2 · nH2O
O Clinochlore (var: Pennine)Mg5Al(AlSi3O10)(OH)8
O PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
O Hercynite (var: Picotite)(Fe,Mg)(Al,Cr)2O4
O PyrolusiteMn4+O2
O QuartzSiO2
O RhodochrositeMnCO3
O RhodoniteMn2+SiO3
O Quartz (var: Rutilated Quartz)SiO2
O RutileTiO2
O ScheeliteCa(WO4)
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
O SideriteFeCO3
O Quartz (var: Smoky Quartz)SiO2
O TalcMg3Si4O10(OH)2
O ThoriteTh(SiO4)
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
O UvaroviteCa3Cr2(SiO4)3
O Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
O ZirconZr(SiO4)
FFluorine
F Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
F Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
NaSodium
Na AlbiteNa(AlSi3O8)
Na NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Na Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
Mg AntigoriteMg3(Si2O5)(OH)4
Mg Clinochlore (var: Chromian Clinochlore)Mg5(Al,Cr)2Si3O10(OH)8
Mg ChrysotileMg3(Si2O5)(OH)4
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg DiopsideCaMgSi2O6
Mg DolomiteCaMg(CO3)2
Mg MagnesiochromiteMgCr2O4
Mg MagnesiteMgCO3
Mg Clinochlore (var: Pennine)Mg5Al(AlSi3O10)(OH)8
Mg PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Mg Hercynite (var: Picotite)(Fe,Mg)(Al,Cr)2O4
Mg Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mg TalcMg3Si4O10(OH)2
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Mg Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
AlAluminium
Al K Feldspar (var: Adularia)KAlSi3O8
Al AlbiteNa(AlSi3O8)
Al AlunogenAl2(SO4)3 · 17H2O
Al Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Al Clinochlore (var: Chromian Clinochlore)Mg5(Al,Cr)2Si3O10(OH)8
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al GrossularCa3Al2(SiO4)3
Al HercyniteFe2+Al2O4
Al Grossular (var: Hessonite)Ca3Al2(SiO4)3
Al KaliniteKAl(SO4)2 · 11H2O
Al KaoliniteAl2(Si2O5)(OH)4
Al MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Al Clinochlore (var: Pennine)Mg5Al(AlSi3O10)(OH)8
Al PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Al Hercynite (var: Picotite)(Fe,Mg)(Al,Cr)2O4
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Al Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
SiSilicon
Si K Feldspar (var: Adularia)KAlSi3O8
Si AlbiteNa(AlSi3O8)
Si Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2
Si AntigoriteMg3(Si2O5)(OH)4
Si Quartz (var: Chalcedony)SiO2
Si Clinochlore (var: Chromian Clinochlore)Mg5(Al,Cr)2Si3O10(OH)8
Si ChrysotileMg3(Si2O5)(OH)4
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si DiatomiteSiO2 · nH2O
Si DiopsideCaMgSi2O6
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si FulguriteSiO2
Si Garnet GroupX3Z2(SiO4)3
Si GrossularCa3Al2(SiO4)3
Si Grossular (var: Hessonite)Ca3Al2(SiO4)3
Si KaoliniteAl2(Si2O5)(OH)4
Si LechatelieriteSiO2
Si MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Si OpalSiO2 · nH2O
Si Clinochlore (var: Pennine)Mg5Al(AlSi3O10)(OH)8
Si PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Si QuartzSiO2
Si RhodoniteMn2+SiO3
Si Quartz (var: Rutilated Quartz)SiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Si Quartz (var: Smoky Quartz)SiO2
Si TalcMg3Si4O10(OH)2
Si ThoriteTh(SiO4)
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Si UvaroviteCa3Cr2(SiO4)3
Si Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Si ZirconZr(SiO4)
SSulfur
S AcanthiteAg2S
S AlunogenAl2(SO4)3 · 17H2O
S ArsenopyriteFeAsS
S ChalcanthiteCuSO4 · 5H2O
S ChalcociteCu2S
S ChalcopyriteCuFeS2
S CobaltiteCoAsS
S CoquimbiteFe2-xAlx(SO4)3 · 9H2O, x ~0.5
S GalenaPbS
S KaliniteKAl(SO4)2 · 11H2O
S MarcasiteFeS2
S MilleriteNiS
S MolybdeniteMoS2
S PyrargyriteAg3SbS3
S PyriteFeS2
S SphaleriteZnS
S StibniteSb2S3
S TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
ClChlorine
Cl Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Cl ChlorargyriteAgCl
KPotassium
K K Feldspar (var: Adularia)KAlSi3O8
K KaliniteKAl(SO4)2 · 11H2O
K MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
K PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
CaCalcium
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca CalciteCaCO3
Ca DiopsideCaMgSi2O6
Ca DolomiteCaMg(CO3)2
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca GrossularCa3Al2(SiO4)3
Ca Grossular (var: Hessonite)Ca3Al2(SiO4)3
Ca ScheeliteCa(WO4)
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Ca UvaroviteCa3Cr2(SiO4)3
Ca Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
TiTitanium
Ti Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Ti BrookiteTiO2
Ti IlmeniteFe2+TiO3
Ti RutileTiO2
CrChromium
Cr Clinochlore (var: Chromian Clinochlore)Mg5(Al,Cr)2Si3O10(OH)8
Cr ChromiteFe2+Cr23+O4
Cr MagnesiochromiteMgCr2O4
Cr MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
Cr Hercynite (var: Picotite)(Fe,Mg)(Al,Cr)2O4
Cr UvaroviteCa3Cr2(SiO4)3
MnManganese
Mn HausmanniteMn2+Mn23+O4
Mn ManganiteMn3+O(OH)
Mn PyrolusiteMn4+O2
Mn RhodochrositeMnCO3
Mn RhodoniteMn2+SiO3
Mn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe ArsenopyriteFeAsS
Fe ChalcopyriteCuFeS2
Fe ChromiteFe2+Cr23+O4
Fe CoquimbiteFe2-xAlx(SO4)3 · 9H2O, x ~0.5
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe HematiteFe2O3
Fe HercyniteFe2+Al2O4
Fe IlmeniteFe2+TiO3
Fe Limonite(Fe,O,OH,H2O)
Fe MagnetiteFe2+Fe23+O4
Fe MarcasiteFeS2
Fe NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Fe PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Fe Hercynite (var: Picotite)(Fe,Mg)(Al,Cr)2O4
Fe PyriteFeS2
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Fe SideriteFeCO3
Fe TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
Fe Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
CoCobalt
Co CobaltiteCoAsS
NiNickel
Ni MilleriteNiS
Ni Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
CuCopper
Cu AzuriteCu3(CO3)2(OH)2
Cu ChalcanthiteCuSO4 · 5H2O
Cu ChalcociteCu2S
Cu ChalcopyriteCuFeS2
Cu CopperCu
Cu CupriteCu2O
Cu MalachiteCu2(CO3)(OH)2
Cu TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Zn SphaleriteZnS
Zn TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
AsArsenic
As ArsenopyriteFeAsS
As CobaltiteCoAsS
ZrZirconium
Zr ZirconZr(SiO4)
MoMolybdenum
Mo MolybdeniteMoS2
AgSilver
Ag AcanthiteAg2S
Ag ChlorargyriteAgCl
Ag Electrum(Au, Ag)
Ag PyrargyriteAg3SbS3
Ag SilverAg
SbAntimony
Sb PyrargyriteAg3SbS3
Sb StibniteSb2S3
Sb TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
WTungsten
W ScheeliteCa(WO4)
OsOsmium
Os Osmium (var: Iridosmine)(Os,Ir)
Os Osmium(Os,Ir,Ru)
IrIridium
Ir Osmium (var: Iridosmine)(Os,Ir)
PtPlatinum
Pt PlatinumPt
AuGold
Au Electrum(Au, Ag)
Au GoldAu
PbLead
Pb GalenaPbS
ThThorium
Th ThoriteTh(SiO4)

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Silliman, Benjamin, Jr. (1867a), A notice of the peculiar mode of the occurrence of gold and silver in the foothills of the Sierra Nevada, and especially at Whiskey Hill, in Placer County, and Quail Hill, in Calaveras County, California: California Academy of Natural Sciences Proceedings: 3: 349-351; […American Journal of Science, 2nd. series: 45: 92-95 (1868)]: .
Fairbanks, Harold W. (1890), Geology of the Mother Lode region: California Mining Bureau. (Report 10): 10: 23-90.
Watts, Wm. L. (1893), Alameda, Colusa, Del Norte, Fresno, Glenn, Humboldt, Marin, Mendocino, Merced, Placer, Sacramento, Santa Clara, San Joaquin, Sonoma, Stanislaus, Sutter, Kern, Lake, Contra Costa, Tehama, Tulare Counties California Mining Bureau. (Report 11): 11: 121-138, 179-199, 210-240, 249-258, 319-322, 334-336, 374-375, 394, 453-479, 485-492.
Turner, Henry Ward (1894a), Description of the gold belt; description of the Jackson sheet: USGS, Geol. Atlas Jackson folio (Folio No. 11), 6pp. (reprinted 1914).
Lindgren, Waldemar (1894b), Description of the gold belt; description of the Sacramento sheet. USGS Geologic Atlas, Sacramento folio (Folio No. 5), 3 pp.
Lindgren, Waldemar (1897), Description of the gold belt; description of the Truckee sheet: USGS Geological Atlas, Truckee folio (Folio No. 39), 8 pp.
Lindgren, Waldemar (1900), Description of the Colfax sheet, California: USGS Geological Atlas, Colfax folio (Folio No. 66), 10 pp.
Reid, John A. (1907a), The country east of the Mother Lode (in Placer County, California): Mining and Scientific Press: 94: 279-280.
Lindgren, Waldemar (1911), The Tertiary gravels of the Sierra Nevada of California: USGS Professional Paper 73, 226 pp.
Tucker, W. Burling, and Waring, C.A. (1916), Mines and mineral resources of El Dorado, Placer, Sacramento, and Yuba counties: California State Mining Bureau, 15th Report of the State Mineralogist (Report 15): 283-299.
Waring, Clarence A. (1917), Placer County: Report 15 of the State Mineralogist, California State Mining Bureau (Report 15): 15: 344.
Waring, Clarence A. (1919), Butte, Placer, Sacramento, Yuba Counties: California Bureau of Mines (Report 15): 15: 309-459.
Waring, Clarence A. (1919), Placer County, drift and hydraulic mines: California Mining Bureau (Report 15): 15: 352-379.
Hamilton, Fletcher McNab (1920), Placer County: California State Mining Bureau 17th Report of the State Mineralogist: 442-451.
Logan, Clarence August (1921), Placer County: California State Mining Bureau. (Report 17): 17:
Haley, C.S. (1923) Gold placers of California. California Mining Bureau. Bulletin 92, 167 pp.
Logan, Clarence August (1927), Amador County, Placer County: California Mining Bureau. (Report 23): 23: 131-202, 235-286.
Jenkins, O. P. (1932), Geologic map of the northern Sierra Nevada, showing Tertiary river channels and Mother Lode belt: California Division of Mines 28th Report of the State Mineralogist, p. 279-298.
Logan, Clarence August (1934), Mother Lode Gold Belt of California: California Division Mines Bulletin 108, 221 pp.: Pl. II.
Logan, Clarence August (1936), Gold mines of Placer County: California Journal of Mines and Geology, California Division Mines (Report 32): 32(1): 7-96).
Logan, Clarence August (1941), Mineral resources of Nevada County, California: California Division Mines (Report 37): 37: 374-408; […California Journal of Mines and Geology: 37(3): 378-379.
Eric, J.C. (1948), Tabulation of Copper Deposits in California in: Copper in California: California Division of Mines Bulletin 144: 197-387.
Logan, Clarence August (1948), History of mining and milling methods in California, in Jenkins, O.P. and others, editors, Geologic guidebook along highway 49 - Sierran gold belt - The Mother Lode Country: California Division of Mines Bulletin 141.
Anonymous (1950), New tungsten find in Placer Co.: California Division of Mines, Mineral Information Service: 3(11): 2.
Rynearson, Garn Arthur (1953), Geological investigations of chromite in California: Chromite deposits in the northern Sierra Nevada, California. California Division of Mines and Geology Bulletin 134, part 3 chapter 5: 229, Pl. 13.
Goodwin, Joseph Grant (1957) Lead and zinc in California. California Journal of Mines and Geology, Division of Mines (Report 53): 53(3&4): 353-724.
Chandra, D. K. (1961) Geology and mineral deposits of the Colfax and Foresthill quadrangles, California. Special Report 67, California Division of Mines, 50 pp.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 282, 320.
Merwin, R. W. (1968), Gold resources in the Tertiary gravels of California: U.S. Bureau of Mines Technical Progress Report 3, 14 pp.
Clark, Wm. B. (1970a) Gold districts of California: California Division Mines & Geology Bulletin 193.
Mineralogical Record (2000): 31: 19.

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