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Shingle Springs Mining District, West Belt, El Dorado Co., California, USAi
Regional Level Types
Shingle Springs Mining DistrictMining District
West Belt- not defined -
El Dorado Co.County
CaliforniaState
USACountry

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Key
Latitude & Longitude (WGS84):
38° North , 120° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~14km
Locality type:


Location and History: This district is in the Sierra Nevada west gold belt in western El Dorado County. A belt of lode-gold mines extends from the Pyramid mine south through Shingle Springs to the vicinity of Brandon Corner, a distance of 10 miles. The district was first worked during the gold rush. The town was settled in 1850; the name derived from "a shingle machine used at a cluster of springs". There was extensive mining activity here during the 1930's.

Geology and Ore Deposits: A north-trending belt of greenstone, green schist, and slate four to six miles wide, which has been intruded by numerous serpentine bodies, both large and small, extends through the central part of the district. A granodiorite-gabbro intrusion lies to the west. The ore deposits consist chiefly of large but low-grade bodies of mineralized talcose, amphibolite-chlorite schist or greenstone with numerous quartz veinlets and stringers. The values occur in disseminated auriferous pyrite found in both the wall rock and the quartz veins and stringers. The ore bodies commonly are found in both the wall rock and the quartz. Some quartz veins with high-grade pockets and abundant sulfides exist. Some of the deposits were
mined by open-pit methods.

Mines: Big Canyon ($3 million+), Brandon, Bugtown, Crystal $100,000+), French Creek, Greenstone, Marcelias, Pyramid ($1 million), Sugar Loaf, and Vandalia ($100,000+).

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

31 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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Nash, J. Thomas (1988) Geology and geochemistry of gold deposits of the Big Canyon area, El Dorado County, California USGS Bull 1854
Albite
Formula: Na(AlSi3O8)
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10006918.
Arsenopyrite
Formula: FeAsS
Bornite
Formula: Cu5FeS4
Calcite
Formula: CaCO3
Chalcocite
Formula: Cu2S
Reference: Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 129.
Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 6 localities in this region.
Chromite
Formula: Fe2+Cr3+2O4
Localities: Reported from at least 10 localities in this region.
Cinnabar
Formula: HgS
Description: Occurs interstitially in slate and quartzite.
Reference: Clark, Wm. B. & D.W. Carlson (1956), Mines and mineral resources of El Dorado County, California: California Journal of Mines and Geology: 52(4): 438; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 114.
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: Cater, F.W., Jr., G.A. Rynearson & D.H. Dow (1951), Chromite deposits of El Dorado County, California: California Division Mines Bulletin 134, part III, Chapter 4: 122-162; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 434.
Clinochlore var: Chromian Clinochlore
Formula: Mg5(Al,Cr)2Si3O10(OH)8
Reference: Cater, F.W., Jr., G.A. Rynearson & D.H. Dow (1951), Chromite deposits of El Dorado County, California: California Division Mines Bulletin 134, part III, Chapter 4: 122-162; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 434.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
'Feldspar Group'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Galena
Formula: PbS
Gold
Formula: Au
Localities: Reported from at least 45 localities in this region.
Hematite
Formula: Fe2O3
Hematite var: Specularite
Formula: Fe2O3
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10029902.
Hessite
Formula: Ag2Te
Reference: Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 218.
Iron
Formula: Fe
Reference: Goldstein, J.I. and Short, J.M. (1967) The iron meteorites, their thermal history and parent bodies. Geochimica et Cosmochimica Acta: 31: 1743; Goldstein, J.I. (1969) The classification of iron meteorites. In: P.M. Millman (Editor), Meteorite Research, D. Reidel, Dordecht-Holland: 736; Schaudy, R., Wasson, J.T., and Buchwald, V.F. (1972) The chemical classification of iron meteorites, VI. A reinvestigation of irons with Ge concentrations lower than 1 ppm. Icarus: 17: 174-192; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 58-59.
Iron var: Kamacite
Formula: (Fe,Ni)
Reference: Goldstein, J.I. and Short, J.M. (1967) The iron meteorites, their thermal history and parent bodies. Geochimica et Cosmochimica Acta: 31: 1743; Goldstein, J.I. (1969) The classification of iron meteorites. In: P.M. Millman (Editor), Meteorite Research, D. Reidel, Dordecht-Holland: 736; Schaudy, R., Wasson, J.T., and Buchwald, V.F. (1972) The chemical classification of iron meteorites, VI. A reinvestigation of irons with Ge concentrations lower than 1 ppm. Icarus: 17: 174-192; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 58-59.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Nash, J. Thomas (1988) Geology and geochemistry of gold deposits of the Big Canyon area, El Dorado County, California USGS Bull 1854.
Magnetite
Formula: Fe2+Fe3+2O4
Malachite
Formula: Cu2(CO3)(OH)2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Molybdenite
Formula: MoS2
Reference: Clark, Wm. B. & D.W. Carlson (1956), Mines and mineral resources of El Dorado County, California: California Journal of Mines and Geology: 52(4): 394; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 79.
Pyrite
Formula: FeS2
Localities: Reported from at least 11 localities in this region.
Pyrite var: Auriferous Pyrite
Formula: FeS2
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10006918.
Pyrrhotite
Formula: Fe7S8
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; Nash, J. Thomas (1988) Geology and geochemistry of gold deposits of the Big Canyon area, El Dorado County, California USGS Bull 1854
Quartz
Formula: SiO2
Localities: Reported from at least 34 localities in this region.
Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Reference: Nash, J. Thomas (1988) Geology and geochemistry of gold deposits of the Big Canyon area, El Dorado County, California USGS Bull 1854.
Rutile
Formula: TiO2
Reference: Nash, J. Thomas (1988) Geology and geochemistry of gold deposits of the Big Canyon area, El Dorado County, California USGS Bull 1854
Schreibersite ?
Formula: (Fe,Ni)3P
Description: Small, silvery particles.
Reference: Goldstein, J.I. and Short, J.M. (1967) The iron meteorites, their thermal history and parent bodies. Geochimica et Cosmochimica Acta: 31: 1743; Goldstein, J.I. (1969) The classification of iron meteorites. In: P.M. Millman (Editor), Meteorite Research, D. Reidel, Dordecht-Holland: 736; Schaudy, R., Wasson, J.T., and Buchwald, V.F. (1972) The chemical classification of iron meteorites, VI. A reinvestigation of irons with Ge concentrations lower than 1 ppm. Icarus: 17: 174-192; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 58-59.
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
'Silica'
'Soapstone'
Sphalerite
Formula: ZnS
Stibnite
Formula: Sb2S3
Reference: Clark, Wm. B. & D.W. Carlson (1956), Mines and mineral resources of El Dorado County, California: California Journal of Mines and Geology: 52(4): 415; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 127.
Taenite
Formula: (Fe,Ni)
Reference: Goldstein, J.I. and Short, J.M. (1967) The iron meteorites, their thermal history and parent bodies. Geochimica et Cosmochimica Acta: 31: 1743; Goldstein, J.I. (1969) The classification of iron meteorites. In: P.M. Millman (Editor), Meteorite Research, D. Reidel, Dordecht-Holland: 736; Schaudy, R., Wasson, J.T., and Buchwald, V.F. (1972) The chemical classification of iron meteorites, VI. A reinvestigation of irons with Ge concentrations lower than 1 ppm. Icarus: 17: 174-192; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 58-59.
Talc
Formula: Mg3Si4O10(OH)2
Titanite
Formula: CaTi(SiO4)O
Reference: Nash, J. Thomas (1988) Geology and geochemistry of gold deposits of the Big Canyon area, El Dorado County, California USGS Bull 1854

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Iron1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
Schreibersite ?1.BD.05(Fe,Ni)3P
Taenite1.AE.10(Fe,Ni)
Group 2 - Sulphides and Sulfosalts
Arsenopyrite2.EB.20FeAsS
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Cinnabar2.CD.15aHgS
Galena2.CD.10PbS
Hessite2.BA.60Ag2Te
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
var: Auriferous Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Sphalerite2.CB.05aZnS
Stibnite2.DB.05Sb2S3
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Hematite4.CB.05Fe2O3
var: Specularite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Albite9.FA.35Na(AlSi3O8)
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
var: Chromian Clinochlore9.EC.55Mg5(Al,Cr)2Si3O10(OH)8
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Riebeckite9.DE.25◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Talc9.EC.05Mg3Si4O10(OH)2
Titanite9.AG.15CaTi(SiO4)O
Unclassified Minerals, Rocks, etc.
'Feldspar Group'-
'Limonite'-(Fe,O,OH,H2O)
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
'Silica'-
'Soapstone'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Iron
var: Kamacite
1.1.11.1(Fe,Ni)
Schreibersite ?1.1.21.2(Fe,Ni)3P
Taenite1.1.11.2(Fe,Ni)
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
Hessite2.4.2.1Ag2Te
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmXp, with m:p = 1:1
Cinnabar2.8.14.1HgS
Galena2.8.1.1PbS
Pyrrhotite2.8.10.1Fe7S8
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
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
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)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Talc71.2.1.3Mg3Si4O10(OH)2
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
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Clinochlore
var: Chromian Clinochlore
-Mg5(Al,Cr)2Si3O10(OH)8
'Feldspar Group'-
Hematite
var: Specularite
-Fe2O3
Iron-Fe
'Limonite'-(Fe,O,OH,H2O)
Pyrite
var: Auriferous Pyrite
-FeS2
Riebeckite-◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
'Serpentine Subgroup'-D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
'Silica'-
'Soapstone'-

List of minerals for each chemical element

HHydrogen
H MalachiteCu2(CO3)(OH)2
H TalcMg3Si4O10(OH)2
H Clinochlore (var: Chromian Clinochlore)Mg5(Al,Cr)2Si3O10(OH)8
H Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H Limonite(Fe,O,OH,H2O)
H Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
H ClinochloreMg5Al(AlSi3O10)(OH)8
CCarbon
C CalciteCaCO3
C MalachiteCu2(CO3)(OH)2
C AnkeriteCa(Fe2+,Mg)(CO3)2
OOxygen
O QuartzSiO2
O AlbiteNa(AlSi3O8)
O ChromiteFe2+Cr23+O4
O CalciteCaCO3
O MalachiteCu2(CO3)(OH)2
O MagnetiteFe2+Fe23+O4
O TalcMg3Si4O10(OH)2
O Clinochlore (var: Chromian Clinochlore)Mg5(Al,Cr)2Si3O10(OH)8
O Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O HematiteFe2O3
O TitaniteCaTi(SiO4)O
O RutileTiO2
O Limonite(Fe,O,OH,H2O)
O Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
O AnkeriteCa(Fe2+,Mg)(CO3)2
O Hematite (var: Specularite)Fe2O3
O ClinochloreMg5Al(AlSi3O10)(OH)8
NaSodium
Na AlbiteNa(AlSi3O8)
Na Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
MgMagnesium
Mg TalcMg3Si4O10(OH)2
Mg Clinochlore (var: Chromian Clinochlore)Mg5(Al,Cr)2Si3O10(OH)8
Mg Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
AlAluminium
Al AlbiteNa(AlSi3O8)
Al Clinochlore (var: Chromian Clinochlore)Mg5(Al,Cr)2Si3O10(OH)8
Al Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al ClinochloreMg5Al(AlSi3O10)(OH)8
SiSilicon
Si QuartzSiO2
Si AlbiteNa(AlSi3O8)
Si TalcMg3Si4O10(OH)2
Si Clinochlore (var: Chromian Clinochlore)Mg5(Al,Cr)2Si3O10(OH)8
Si Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si TitaniteCaTi(SiO4)O
Si Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Si ClinochloreMg5Al(AlSi3O10)(OH)8
PPhosphorus
P Schreibersite(Fe,Ni)3P
SSulfur
S BorniteCu5FeS4
S CinnabarHgS
S PyriteFeS2
S PyrrhotiteFe7S8
S ChalcopyriteCuFeS2
S StibniteSb2S3
S GalenaPbS
S MolybdeniteMoS2
S SphaleriteZnS
S ChalcociteCu2S
S Pyrite (var: Auriferous Pyrite)FeS2
S ArsenopyriteFeAsS
CaCalcium
Ca CalciteCaCO3
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca TitaniteCaTi(SiO4)O
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
TiTitanium
Ti TitaniteCaTi(SiO4)O
Ti RutileTiO2
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr Clinochlore (var: Chromian Clinochlore)Mg5(Al,Cr)2Si3O10(OH)8
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe BorniteCu5FeS4
Fe PyriteFeS2
Fe PyrrhotiteFe7S8
Fe ChromiteFe2+Cr23+O4
Fe ChalcopyriteCuFeS2
Fe MagnetiteFe2+Fe23+O4
Fe Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Taenite(Fe,Ni)
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe HematiteFe2O3
Fe Limonite(Fe,O,OH,H2O)
Fe Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe Pyrite (var: Auriferous Pyrite)FeS2
Fe ArsenopyriteFeAsS
Fe Hematite (var: Specularite)Fe2O3
Fe IronFe
Fe Schreibersite(Fe,Ni)3P
NiNickel
Ni Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Taenite(Fe,Ni)
Ni Schreibersite(Fe,Ni)3P
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu MalachiteCu2(CO3)(OH)2
Cu ChalcociteCu2S
ZnZinc
Zn SphaleriteZnS
Zn Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
AsArsenic
As ArsenopyriteFeAsS
MoMolybdenum
Mo MolybdeniteMoS2
AgSilver
Ag HessiteAg2Te
SbAntimony
Sb StibniteSb2S3
TeTellurium
Te HessiteAg2Te
AuGold
Au GoldAu
HgMercury
Hg CinnabarHgS
PbLead
Pb GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Irelan, William, Jr. (1888b), Eighth annual report of the State Mineralogist [includes mineral resources of the State, with contributions by W.A. Goodyear, H.A. Whiting, and Stephen Bowers]: California Mining Bureau. (Report 8), 946 pp.
Lindgren, Waldemar & Henry Ward Turner (1894), Description of the gold belt, California; description of the Placerville sheet: USGS Geol. Atlas, Placerville folio (Folio No. 3) 3 pp.; […(abstract): Jour. Geol.: 4: 248-250 (1896)].
Logan, Clarence August (1938), Mineral resources of El Dorado County: California Journal of Mines and Geology, California Division Mines (Report 34): 34(3): 219-223, 244-246, 254.
Clark, Wm. B. & D.W. Carlson (1956), Mines and mineral resources of El Dorado County, California: California Journal of Mines and Geology: 52(4): 401-429.
Clark, Wm. B. (1970a) Gold districts of California: California Division Mines & Geology Bulletin 193: 117.

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