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Yolo County, California, USA i
Regional Level Types
Yolo County County
California State
USA Country

Regional Level Types
Yolo County	County
California	State
USA	Country

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Predictive Mineralogy

Gated Entrance to Mine Property

Harrison Mine, Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

Gated Entrance to Mine Property

Harrison Mine, Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

Gated Entrance to Mine Property

Harrison Mine, Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

Neighbouring regions:

Napa County, California, USA

Lake County, California, USA

Colusa County, California, USA

Sacramento County, California, USA

Solano County, California, USA

Sutter County, California, USA

Type:

County

Largest Settlements:

Place	Population
Davis	67,666 (2017)
Woodland	58,567 (2017)
West Sacramento	52,721 (2017)
Winters	7,034 (2017)
Cottonwood	3,850 (2014)
Esparto	3,108 (2011)

Mindat Locality ID:

209741

Long-form identifier:

mindat:1:2:209741:4

GUID (UUID V4):

Other Languages:

View 33 more...

French:

Comté de Yolo, Californie, États-Unis

German:

Yolo County, Kalifornien, Vereinigte Staaten

Italian:

Contea di Yolo, California, Stati Uniti d'America

Russian:

Йоло, Калифорния, Соединённые Штаты Америки

Simplified Chinese:

優洛縣, 加利福尼亚州, 美国

Spanish:

Condado de Yolo, California, Estados Unidos

Albanian:

Yolo County, Kalifornia, Shtetet e Bashkuara të Amerikës

Arabic:

مقاطعة يولو, كاليفورنيا, الولايات المتحدة

Armenian:

Յոլո շրջան, Կալիֆոռնիա, Ամերիկայի Միացյալ Նահանգներ

Basque:

Yolo konderria, Kalifornia

Bavarian:

Yolo County, Kalifornien, Vaoanigte Stootn

Bishnupriya Manipuri:

য়োলো কাউন্টি, ক্যালিফোর্নিয়া, তিলপারাষ্ট্র

Bulgarian:

Йоло, Калифорния, Съединени американски щати

Cebuano:

Yolo County, California

Czech:

Yolo County, Kalifornie, Spojené státy americké

Danish:

Yolo County, Californien, USA

Dutch:

Yolo County, Verenigde Staten

Farsi/Persian:

شهرستان یولو، کالیفرنیا, کالیفرنیا, ایالات متحده آمریکا

Hungarian:

Yolo megye, Kalifornia, Amerikai Egyesült Államok

Irish Gaelic:

Contae Yolo, California, Stáit Aontaithe Mheiriceá

Japanese:

ヨロ郡, カリフォルニア州, アメリカ合衆国

Kapampangan:

Yolo County, California, Estados Unidos

Latin:

Yolo Comitatus, California, Civitates Foederatae Americae

Limburgian:

Yolo County, Californië, Vereinegde Staote vaan Amerika

Low Saxon/Low German:

Yolo County, Kalifornien, USA

Malayalam:

യോളോ കൌണ്ടി, കാലിഫോർണിയ

Norwegian:

Yolo County, California, USA

Polish:

Hrabstwo Yolo, Kalifornia, Stany Zjednoczone

Portuguese:

Condado de Yolo, Califórnia, Estados Unidos

Serbian:

Округ Јоло, Калифорнија, Сједињене Америчке Државе

Serbo-Croatian:

Yolo County, Kalifornija, Sjedinjene Američke Države

Swedish:

Yolo County, Kalifornien, USA

Tagalog:

Yolo County, California, Estados Unidos

Turkish:

Yolo County, Kaliforniya, Amerika Birleşik Devletleri

Ukrainian:

Йоло, Каліфорнія, Сполучені Штати Америки

Urdu:

یولو کاؤنٹی، کیلی فورنیا, کیلیفورنیا, ریاستہائے متحدہ امریکا

Vietnamese:

Quận Yolo, California, Chủng Quốc Hoa Kỳ

Waray:

Condado han Yolo, California, Estados Unidos

Western Punjabi:

یولو کاؤنٹی, کیلیفورنیا, امریکہ

No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.

ⓘ Mercury

Mineral List

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

14 valid minerals.

Detailed Mineral List:

ⓘ Albite

Formula: Na(AlSi₃O₈)

Locality: Putah Creek, Putah Creek Mining District, Yolo County, California, USA

Description: Observed in the Nomlaki Tuff.

References:

Emerson, Donald O. (1962), Sodic plagioclase of intermediate temperature state in the “Nomlaski Tuff,” near Winters, California (abstract): Geological Society of America Special Paper: 23

Murdoch, Joseph; Webb, Robert Wallace (1966) Minerals of California, Centennial Volume (1866-1966) - California Division of Mines and Geology, Bulletin 189. California Division of Mines and Geology. 559 pp.

Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.

ⓘ Albite var. Andesine

Formula: (Na,Ca)[Al(Si,Al)Si₂O₈]

Locality: Putah Creek, Putah Creek Mining District, Yolo County, California, USA

Description: Observed in the Nomlaki Tuff.

References:

Emerson, Donald O. (1962), Sodic plagioclase of intermediate temperature state in the “Nomlaski Tuff,” near Winters, California (abstract): Geological Society of America Special Paper: 23

Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.

ⓘ 'Aragotite'

Formula: (C,H)

Locality: Reed Mine (California Mine; Royal Mine; Soda Springs Mine), Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

References:

Hanks, Henry Garber (1884), Fourth report of the State Mineralogist: California Mining Bureau. Report 4, 410 pp.: 289

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 83.

ⓘ Calcite

Formula: CaCO₃

Localities:

Harrison Mine (New England Mine; Grizzly Mine; January Mine; Ruby Mine), Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA
Reed Mine (California Mine; Royal Mine; Soda Springs Mine), Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

ⓘ Cinnabar

Formula: HgS

Localities:

Reed Mine (California Mine; Royal Mine; Soda Springs Mine), Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA
Harrison Mine (New England Mine; Grizzly Mine; January Mine; Ruby Mine), Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

Description: Occurs as veinlets and disseminations in silica-carbonate rock near gouge of the fault zone.

ⓘ Dolomite

Formula: CaMg(CO₃)₂

Locality: Reed Mine (California Mine; Royal Mine; Soda Springs Mine), Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

References:

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

ⓘ Fluorite

Formula: CaF₂

Locality: Unspecified Fluorspar occurrence [1], Yolo County, California, USA

References:

Mining and Scientific Press (1879), Fluor-spar in Yolo County: Mining and Scientific Press: 39-370

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 188.

ⓘ Hercynite

Formula: Fe²⁺Al₂O₄

Locality: Harrison Mine (New England Mine; Grizzly Mine; January Mine; Ruby Mine), Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

References:

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

ⓘ Hercynite var. Picotite

Formula: (Fe,Mg)(Al,Cr)₂O₄

Locality: Harrison Mine (New England Mine; Grizzly Mine; January Mine; Ruby Mine), Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

References:

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

ⓘ Idrialite

Formula: C₂₂H₁₄

Locality: Reed Mine (California Mine; Royal Mine; Soda Springs Mine), Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

References:

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 165

Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.

ⓘ Magnetite

Formula: Fe²⁺Fe³⁺₂O₄

Locality: Harrison Mine (New England Mine; Grizzly Mine; January Mine; Ruby Mine), Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

References:

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

ⓘ Marcasite

Formula: FeS₂

Locality: Reed Mine (California Mine; Royal Mine; Soda Springs Mine), Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

References:

Averitt, Paul (1945), Quicksilver deposits of the Knoxville district, Napa, Yolo, and Lake Counties, California: California Division Mines Report 42: 65-90

Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.

ⓘ Metacinnabar

Formula: HgS

Locality: Reed Mine (California Mine; Royal Mine; Soda Springs Mine), Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

Description: Occurs as massive and crystalline material. Abundant in the early days of mining here (1870-1880) as the principal ore mineral.

References:

Hanks, Henry Garber (1884), Fourth report of the State Mineralogist: California Mining Bureau. Report 4, 410 pp.: 261

Hanks, Henry Garber (1886), Sixth report of the State Mineralogist: California Mining Bureau. Report 6 part 1, 145 pp.: 122

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 263

Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.

ⓘ Native Gold

Formula: Au

Localities:

Putah Creek Mine, Winters, Putah Creek Mining District, Yolo County, California, USA
Unnamed Au occurrence [1], Capay, Yolo County, California, USA
Putah Creek placers, Winters, Putah Creek Mining District, Yolo County, California, USA

ⓘ Native Platinum

Formula: Pt

Locality: Putah Creek Mine, Winters, Putah Creek Mining District, Yolo County, California, USA

Description: Placer material, identified visually per MRDS file.

References:

Logan, C. A. (1919) Platinum and Allied Metals in California. Bulletin 85. California State Mining Bureaupp.50-51

Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.

ⓘ Native Sulphur

Formula: S₈

Locality: Harrison Mine (New England Mine; Grizzly Mine; January Mine; Ruby Mine), Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

References:

Forstner, William (1903) The Quicksilver Resources of California. Bulletin 27. California State Mining Bureaup.117

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 150, 356

Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.

ⓘ 'Opalite'

Locality: Harrison Mine (New England Mine; Grizzly Mine; January Mine; Ruby Mine), Knoxville area, Knoxville Mining District, Coast Ranges, Yolo County, California, USA

References:

Forstner, William (1903) The Quicksilver Resources of California. Bulletin 27. California State Mining Bureaup.117

ⓘ 'Petroleum'

Localities:

Description: Occurs as a dark, heavy oil.

ⓘ Pyrite

Formula: FeS₂

Localities:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Gold	1.AA.05	Au
ⓘ	Native Platinum	1.AF.10	Pt
ⓘ	Native Sulphur	1.CC.05	S₈
Group 2 - Sulphides and Sulfosalts
ⓘ	Metacinnabar	2.CB.05a	HgS
ⓘ	Cinnabar	2.CD.15a	HgS
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Marcasite	2.EB.10a	FeS₂
Group 3 - Halides
ⓘ	Fluorite	3.AB.25	CaF₂
Group 4 - Oxides and Hydroxides
ⓘ	Hercynite	4.BB.05	Fe²⁺Al₂O₄
ⓘ	Magnetite	4.BB.05	Fe²⁺Fe³⁺₂O₄
ⓘ	Hercynite var. Picotite	4.BB.05	(Fe,Mg)(Al,Cr)₂O₄
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Dolomite	5.AB.10	CaMg(CO₃)₂
Group 9 - Silicates
ⓘ	Albite	9.FA.35	Na(AlSi₃O₈)
ⓘ	var. Andesine	9.FA.35	(Na,Ca)[Al(Si,Al)Si₂O₈]
Group 10 - Organic Compounds
ⓘ	Idrialite	10.BA.20	C₂₂H₁₄
Unclassified
ⓘ	'Aragotite'	-	(C,H)
ⓘ	'Opalite'	-
ⓘ	'Petroleum'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Aragotite	(C,H)
H	ⓘ Idrialite	C₂₂H₁₄
C	Carbon
C	ⓘ Aragotite	(C,H)
C	ⓘ Calcite	CaCO₃
C	ⓘ Dolomite	CaMg(CO₃)₂
C	ⓘ Idrialite	C₂₂H₁₄
O	Oxygen
O	ⓘ Albite	Na(AlSi₃O₈)
O	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
O	ⓘ Calcite	CaCO₃
O	ⓘ Dolomite	CaMg(CO₃)₂
O	ⓘ Hercynite	Fe²⁺Al₂O₄
O	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
O	ⓘ Hercynite var. Picotite	(Fe,Mg)(Al,Cr)₂O₄
F	Fluorine
F	ⓘ Fluorite	CaF₂
Na	Sodium
Na	ⓘ Albite	Na(AlSi₃O₈)
Na	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
Mg	Magnesium
Mg	ⓘ Dolomite	CaMg(CO₃)₂
Mg	ⓘ Hercynite var. Picotite	(Fe,Mg)(Al,Cr)₂O₄
Al	Aluminium
Al	ⓘ Albite	Na(AlSi₃O₈)
Al	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
Al	ⓘ Hercynite	Fe²⁺Al₂O₄
Al	ⓘ Hercynite var. Picotite	(Fe,Mg)(Al,Cr)₂O₄
Si	Silicon
Si	ⓘ Albite	Na(AlSi₃O₈)
Si	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
S	Sulfur
S	ⓘ Cinnabar	HgS
S	ⓘ Marcasite	FeS₂
S	ⓘ Metacinnabar	HgS
S	ⓘ Pyrite	FeS₂
S	ⓘ Native Sulphur	S₈
Ca	Calcium
Ca	ⓘ Albite var. Andesine	(Na,Ca)[Al(Si,Al)Si₂O₈]
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Dolomite	CaMg(CO₃)₂
Ca	ⓘ Fluorite	CaF₂
Cr	Chromium
Cr	ⓘ Hercynite var. Picotite	(Fe,Mg)(Al,Cr)₂O₄
Fe	Iron
Fe	ⓘ Hercynite	Fe²⁺Al₂O₄
Fe	ⓘ Magnetite	Fe²⁺Fe₂³⁺O₄
Fe	ⓘ Marcasite	FeS₂
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Hercynite var. Picotite	(Fe,Mg)(Al,Cr)₂O₄
Pt	Platinum
Pt	ⓘ Native Platinum	Pt
Au	Gold
Au	ⓘ Native Gold	Au
Hg	Mercury
Hg	ⓘ Cinnabar	HgS
Hg	ⓘ Metacinnabar	HgS

Fossils

There are 134 fossil localities from the PaleoBioDB database within this region.

These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences

134

Youngest Fossil Listed

0.01 Ma (Pleistocene)

Oldest Fossil Listed

166 Ma (Middle Jurassic)

Stratigraphic Units

Click here to view 8 stratigraphic units.

Fossils from Region

Click here to show the list.

Accepted Name	Hierarchy	Age
Orbiculiforma genus	Chromista : Radiozoa : Polycystina : Spumellaria : Orbiculiformidae : *Orbiculiforma*	105.3 - 99.6 Ma Cretaceous
Quinquecapsularia genus	Chromista : Radiozoa : Polycystina : Quinquecapsulariidae : *Quinquecapsularia*	105.3 - 99.6 Ma Cretaceous
Archaeodictyomitra genus	Chromista : Radiozoa : Polycystina : Nassellaria : Archaeodictyomitridae : *Archaeodictyomitra*	105.3 - 99.6 Ma Cretaceous
Microsciadiocapsa genus	Chromista : Radiozoa : Polycystina : Nassellaria : Neosciadiocapsidae : *Microsciadiocapsa*	105.3 - 99.6 Ma Cretaceous
Petasiforma genus	Chromista : Radiozoa : Polycystina : Nassellaria : Neosciadiocapsidae : *Petasiforma*	105.3 - 99.6 Ma Cretaceous
Pseudodictyomitra genus	Chromista : Radiozoa : Polycystina : Nassellaria : Pseudodictyomitridae : *Pseudodictyomitra*	105.3 - 99.6 Ma Cretaceous
Globigerinelloides genus	Foraminifera : Globigerinelloididae : *Globigerinelloides*	89.8 - 86.3 Ma Late/Upper Cretaceous
Marginotruncana genus	Chromista : Foraminifera : Globothalamea : Rotaliida : Globotruncanidae : *Marginotruncana*	89.8 - 86.3 Ma Late/Upper Cretaceous
Rotalia genus	Chromista : Foraminifera : Globothalamea : Rotaliida : Rotaliidae : *Rotalia*	56 - 47.8 Ma Eocene
Perotrochus (Entemnotrochus) subgenus	Animalia : Mollusca : Gastropoda : Pleurotomariida : Pleurotomariidae : Perotrochus : *Perotrochus (Entemnotrochus)*	56 - 33.9 Ma Paleogene
Natica genus	Animalia : Mollusca : Gastropoda : Littorinimorpha : Naticidae : *Natica*	56 - 47.8 Ma Eocene
Perissitys genus	Animalia : Mollusca : Gastropoda : Neogastropoda : Turbinellidae : *Perissitys*	86.3 - 83.6 Ma Late/Upper Cretaceous
Janiopsis genus	Animalia : Mollusca : Gastropoda : Neogastropoda : Pisaniidae : *Janiopsis*	56 - 47.8 Ma Eocene
Scaphander genus	Animalia : Mollusca : Gastropoda : Cephalaspidea : Cylichnidae : *Scaphander*	56 - 47.8 Ma Eocene
Anisomyon genus	Animalia : Mollusca : Gastropoda : Siphonariida : Siphonariidae : *Anisomyon*	89.8 - 86.3 Ma Late/Upper Cretaceous
Aturia genus	Animalia : Mollusca : Cephalopoda : Nautilida : Aturiidae : *Aturia*	56 - 47.8 Ma Eocene
Eutrephoceras genus	Animalia : Mollusca : Cephalopoda : Nautilida : Nautilidae : *Eutrephoceras*	56 - 47.8 Ma Eocene
Baculites genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Baculitidae : *Baculites*	89.8 - 86.3 Ma Late/Upper Cretaceous
Damesites genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Desmoceratidae : *Damesites*	89.8 - 86.3 Ma Late/Upper Cretaceous
Desmophyllites genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Desmoceratidae : *Desmophyllites*	89.8 - 86.3 Ma Late/Upper Cretaceous
Eupachydiscus genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Pachydiscidae : *Eupachydiscus*	89.8 - 86.3 Ma Late/Upper Cretaceous
Hauericeras genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Desmoceratidae : *Hauericeras*	83.5 - 70.6 Ma Late/Upper Cretaceous
Metaplacenticeras genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Placenticeratidae : *Metaplacenticeras*	89.8 - 70.6 Ma Late/Upper Cretaceous
Oxybeloceras genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Diplomoceratidae : *Oxybeloceras*	89.8 - 86.3 Ma Late/Upper Cretaceous
Parapuzosia genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Desmoceratidae : *Parapuzosia*	89.8 - 86.3 Ma Late/Upper Cretaceous
Perisphinctes genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Perisphinctidae : *Perisphinctes*	166.1 - 150.8 Ma Jurassic
Pseudoxybeloceras genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Diplomoceratidae : *Pseudoxybeloceras*	83.5 - 70.6 Ma Late/Upper Cretaceous
Glycymeris genus	Animalia : Mollusca : Bivalvia : Arcida : Glycymerididae : *Glycymeris*	93.9 - 89.8 Ma Late/Upper Cretaceous
Inoceramus genus	Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : *Inoceramus*	89.8 - 86.3 Ma Late/Upper Cretaceous
Thyasira genus	Animalia : Mollusca : Bivalvia : Lucinida : Thyasiridae : *Thyasira*	89.8 - 86.3 Ma Late/Upper Cretaceous
Ranina genus	Animalia : Arthropoda : Malacostraca : Decapoda : Raninidae : *Ranina*	56 - 47.8 Ma Eocene
Echinocorys genus	Animalia : Echinodermata : Echinoidea : Holasteroida : Echinocorythidae : *Echinocorys*	89.8 - 86.3 Ma Late/Upper Cretaceous
Mammuthus columbi species	Animalia : Chordata : Mammalia : Proboscidea : Elephantidae : Mammuthus : *Mammuthus columbi*	0.3 - 0.012 Ma Pleistocene
Paramylodon harlani species	Animalia : Chordata : Mammalia : Xenarthra : Mylodontidae : Paramylodon : *Paramylodon harlani*	0.3 - 0.012 Ma Pleistocene
Elimia genus	*Elimia*	89.8 - 86.3 Ma Late/Upper Cretaceous
Acteon genus	Animalia : Mollusca : Gastropoda : Cephalaspidea : Acteonidae : *Acteon*	56 - 47.8 Ma Eocene
Gyrodes (Sohlella) yolensis species	Animalia : Mollusca : Gastropoda : Naticidae : Gyrodes : *Gyrodes (Sohlella) yolensis*	93.9 - 89.8 Ma Late/Upper Cretaceous
Tornatellaea vacavillensis species	Animalia : Mollusca : Gastropoda : Cephalaspidea : Acteonidae : Tornatellaea : *Tornatellaea vacavillensis*	56 - 47.8 Ma Eocene
Mangilia vacavillensis species	Animalia : Mollusca : Gastropoda : Neogastropoda : Mangeliidae : Mangelia : *Mangilia vacavillensis*	56 - 47.8 Ma Eocene
Yoldia mosesi species	Animalia : Mollusca : Bivalvia : Nuculanida : Yoldiidae : Yoldia : *Yoldia mosesi*	56 - 47.8 Ma Eocene
Acila (Truncacila) demessa species	Animalia : Mollusca : Bivalvia : Nuculida : Nuculidae : Acila : *Acila (Truncacila) demessa*	89.8 - 86.3 Ma Late/Upper Cretaceous
Ancilla meganosensis species	Animalia : Mollusca : Gastropoda : Neogastropoda : Ancillariidae : Ancilla : *Ancilla meganosensis*	56 - 47.8 Ma Eocene
Flabellum clarki species	Animalia : Cnidaria : Anthozoa : Scleractinia : Flabellidae : Flabellum : *Flabellum clarki*	56 - 47.8 Ma Eocene
Trochocyathus imperialis species	Animalia : Cnidaria : Anthozoa : Scleractinia : Caryophylliidae : Trochocyathus : *Trochocyathus imperialis*	56 - 47.8 Ma Eocene
Trochocyathus crooki species	Animalia : Cnidaria : Anthozoa : Scleractinia : Caryophylliidae : Trochocyathus : *Trochocyathus crooki*	56 - 47.8 Ma Eocene
Trochocyathus nomlandi species	Animalia : Cnidaria : Anthozoa : Scleractinia : Caryophylliidae : Trochocyathus : *Trochocyathus nomlandi*	56 - 47.8 Ma Eocene
Stephanophyllia californica species	Animalia : Cnidaria : Anthozoa : Scleractinia : Micrabaciidae : Stephanophyllia : *Stephanophyllia californica*	56 - 47.8 Ma Eocene
Caryophyllia capayensis species	Animalia : Cnidaria : Anthozoa : Scleractinia : Caryophylliidae : Caryophyllia : *Caryophyllia capayensis*	56 - 47.8 Ma Eocene
Madracis wellsi species	Animalia : Cnidaria : Anthozoa : Scleractinia : Pocilloporidae : Madracis : *Madracis wellsi*	56 - 47.8 Ma Eocene
Turbinolia capayasensis species	Animalia : Cnidaria : Anthozoa : Scleractinia : Turbinoliidae : Turbinolia : *Turbinolia capayasensis*	56 - 47.8 Ma Eocene
Stephanophyllia vacavillensis species	Animalia : Cnidaria : Anthozoa : Scleractinia : Micrabaciidae : Stephanophyllia : *Stephanophyllia vacavillensis*	56 - 47.8 Ma Eocene
Desmophyllites diphylloides species	Animalia : Mollusca : Cephalopoda : Ammonitida : Desmoceratidae : Desmophyllites : *Desmophyllites diphylloides*	89.8 - 70.6 Ma Late/Upper Cretaceous
Hypophylloceras (Neophylloceras) ramosum species	Animalia : Mollusca : Cephalopoda : Phylloceratida : Phylloceratidae : Neophylloceras : *Hypophylloceras (Neophylloceras) ramosum*	89.8 - 70.6 Ma Late/Upper Cretaceous
Biplica obliqua species	Animalia : Mollusca : Gastropoda : Architectibranchia : Ringiculidae : Biplica : *Biplica obliqua*	89.8 - 86.3 Ma Late/Upper Cretaceous
Baculites inornatus species	Animalia : Mollusca : Cephalopoda : Ammonoidea : Baculitidae : Baculites : *Baculites inornatus*	89.8 - 86.3 Ma Late/Upper Cretaceous
Protexanites thompsoni species	Animalia : Mollusca : Cephalopoda : Ammonoidea : Collignoniceratidae : Protexanites : *Protexanites thompsoni*	89.8 - 86.3 Ma Late/Upper Cretaceous
Neopuzosia ishikawai species	Animalia : Mollusca : Cephalopoda : Ammonoidea : Neopuzosia : *Neopuzosia ishikawai*	89.8 - 86.3 Ma Late/Upper Cretaceous
Trochocyathus (Aplocyathus) subgenus	Animalia : Cnidaria : Anthozoa : Scleractinia : Caryophylliidae : Trochocyathus : *Trochocyathus (Aplocyathus)*	56 - 47.8 Ma Eocene
Turbinolia dickersoni species	Animalia : Cnidaria : Anthozoa : Scleractinia : Turbinoliidae : Turbinolia : *Turbinolia dickersoni*	56 - 47.8 Ma Eocene
Petasiforma foremanae species	Chromista : Radiozoa : Polycystina : Nassellaria : Neosciadiocapsidae : Petasiforma : *Petasiforma foremanae*	105.3 - 99.6 Ma Cretaceous
Echinoidea class	Animalia : Echinodermata : Echinoidea	56 - 47.8 Ma Eocene
Cladoceramus undulatoplicatus species	Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Cladoceramus : *Cladoceramus undulatoplicatus*	89.8 - 86.3 Ma Late/Upper Cretaceous
Platytrochus merriami species	Animalia : Cnidaria : Anthozoa : Scleractinia : Caryophylliidae : Platytrochus : *Platytrochus merriami*	56 - 47.8 Ma Eocene
Balanophyllia variabilis species	Animalia : Cnidaria : Anthozoa : Scleractinia : Dendrophylliidae : Balanophyllia : *Balanophyllia variabilis*	56 - 47.8 Ma Eocene
Inoceramus subundatus species	Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Inoceramus : *Inoceramus subundatus*	89.8 - 70.6 Ma Late/Upper Cretaceous
Tessarolax distorta species	Animalia : Mollusca : Gastropoda : Littorinimorpha : Aporrhaidae : Tessarolax : *Tessarolax distorta*	89.8 - 86.3 Ma Late/Upper Cretaceous
Eupachydiscus arbucklensis species	Animalia : Mollusca : Cephalopoda : Ammonoidea : Pachydiscidae : Eupachydiscus : *Eupachydiscus arbucklensis*	89.8 - 86.3 Ma Late/Upper Cretaceous
Eupachydiscus willgreeni species	Animalia : Mollusca : Cephalopoda : Ammonoidea : Pachydiscidae : Eupachydiscus : *Eupachydiscus willgreeni*	89.8 - 86.3 Ma Late/Upper Cretaceous
Parapachydiscus cortinaensis species	Animalia : Mollusca : Cephalopoda : Ammonoidea : Pachydiscidae : Pachydiscus : *Parapachydiscus cortinaensis*	89.8 - 86.3 Ma Late/Upper Cretaceous
Nowakites rumseyensis species	Animalia : Mollusca : Cephalopoda : Ammonoidea : Pachydiscidae : Nowakites : *Nowakites rumseyensis*	89.8 - 86.3 Ma Late/Upper Cretaceous
Puzosia (Parapuzosia) arenaica species	Animalia : Mollusca : Cephalopoda : Ammonitida : Desmoceratidae : Parapuzosia : *Puzosia (Parapuzosia) arenaica*	89.8 - 86.3 Ma Late/Upper Cretaceous
Puzosia (Holcodiscoides) gorrilli species	Animalia : Mollusca : Cephalopoda : Ammonitida : Kossmaticeratidae : Holcodiscoides : *Puzosia (Holcodiscoides) gorrilli*	89.8 - 86.3 Ma Late/Upper Cretaceous
Eutrephoceras campbelli species	Animalia : Mollusca : Cephalopoda : Nautilida : Nautilidae : Eutrephoceras : *Eutrephoceras campbelli*	89.8 - 86.3 Ma Late/Upper Cretaceous
Amphidonte (Amphidonte) parasitica species	Animalia : Mollusca : Bivalvia : Ostreida : Gryphaeidae : Amphidonte : *Amphidonte (Amphidonte) parasitica*	89.8 - 86.3 Ma Late/Upper Cretaceous
Bernaya (Protocypraea) berryessae species	Animalia : Mollusca : Gastropoda : Cypraeidae : Bernaya : *Bernaya (Protocypraea) berryessae*	93.9 - 89.8 Ma Late/Upper Cretaceous
Eocypraea (Eocypraea) louellae species	Animalia : Mollusca : Gastropoda : Eocypraeidae : Eocypraea : *Eocypraea (Eocypraea) louellae*	93.9 - 89.8 Ma Late/Upper Cretaceous
Igonoia genus	Animalia : Mollusca : Gastropoda : Trochida : Turbinidae : *Igonoia*	93.9 - 89.8 Ma Late/Upper Cretaceous
Cyclammina clarki species	Foraminifera : Lituolidae : Cyclammina : *Cyclammina clarki*	56 - 47.8 Ma Eocene
Dentalium stramineum species	Animalia : Mollusca : Scaphopoda : Dentaliida : Dentaliidae : Dentalium : *Dentalium stramineum*	56 - 47.8 Ma Eocene
Dentalina pauperata species	Foraminifera : Nodosariidae : Dentalina : *Dentalina pauperata*	56 - 47.8 Ma Eocene
Nodosaria soluta species	Foraminifera : Nodosariidae : Nodosaria : *Nodosaria soluta*	56 - 47.8 Ma Eocene
Camptonectes virgatus species	Animalia : Mollusca : Bivalvia : Pectinida : Pectinidae : Camptonectes : *Camptonectes virgatus*	89.8 - 86.3 Ma Late/Upper Cretaceous
Solemya dunnensis species	Animalia : Mollusca : Bivalvia : Solemyida : Solemyidae : Solemya : *Solemya dunnensis*	56 - 47.8 Ma Eocene
Inoceramus whitneyi species	Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Inoceramus : *Inoceramus whitneyi*	89.8 - 86.3 Ma Late/Upper Cretaceous
Pecten (Propeamusium) cowperi species	Animalia : Mollusca : Bivalvia : Pectinida : Pectinidae : Pecten : *Pecten (Propeamusium) cowperi*	89.8 - 86.3 Ma Late/Upper Cretaceous
Inoceramus klamathensis species	Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Inoceramus : *Inoceramus klamathensis*	89.8 - 86.3 Ma Late/Upper Cretaceous
Bullina yoloensis species	Animalia : Mollusca : Gastropoda : Architectibranchia : Acteonidae : Bullina : *Bullina yoloensis*	89.8 - 86.3 Ma Late/Upper Cretaceous
Pseudomelania colusaensis species	Animalia : Mollusca : Gastropoda : Neogastropoda : Pseudomelaniidae : Pseudomelania : *Pseudomelania colusaensis*	89.8 - 86.3 Ma Late/Upper Cretaceous
Oxybeloceras petrolense species	Animalia : Mollusca : Cephalopoda : Ammonitida : Diplomoceratidae : Oxybeloceras : *Oxybeloceras petrolense*	89.8 - 86.3 Ma Late/Upper Cretaceous
Nowakites dobbinsi species	Animalia : Mollusca : Cephalopoda : Ammonitida : Pachydiscidae : Nowakites : *Nowakites dobbinsi*	89.8 - 86.3 Ma Late/Upper Cretaceous
Canadoceras celeste species	Animalia : Mollusca : Cephalopoda : Ammonitida : Pachydiscidae : Canadoceras : *Canadoceras celeste*	89.8 - 86.3 Ma Late/Upper Cretaceous
Dentalium (Entalis) whiteavesi species	Animalia : Mollusca : Scaphopoda : Entalis : *Dentalium (Entalis) whiteavesi*	89.8 - 86.3 Ma Late/Upper Cretaceous
Baculites fairbanksi species	Animalia : Mollusca : Cephalopoda : Ammonitida : Baculitidae : Baculites : *Baculites fairbanksi*	89.8 - 86.3 Ma Late/Upper Cretaceous
Metula (Celatoconus) vacavillensis species	Animalia : Mollusca : Gastropoda : Neogastropoda : Buccinidae : Pisania : *Metula (Celatoconus) vacavillensis*	56 - 47.8 Ma Eocene
Bittium (Semibittium) quadricingulatum species	Animalia : Mollusca : Gastropoda : Sorbeoconcha : Cerithiidae : Bittium : *Bittium (Semibittium) quadricingulatum*	56 - 47.8 Ma Eocene
Ficopsis furlongi species	Animalia : Mollusca : Gastropoda : Littorinimorpha : Ficidae : Ficopsis : *Ficopsis furlongi*	56 - 47.8 Ma Eocene
Euthriofusus crescentis species	Animalia : Mollusca : Gastropoda : Neogastropoda : Fasciolariidae : Euthriofusus : *Euthriofusus crescentis*	56 - 47.8 Ma Eocene
Ancilla vacavillensis species	Animalia : Mollusca : Gastropoda : Neogastropoda : Ancillariidae : Ancilla : *Ancilla vacavillensis*	56 - 47.8 Ma Eocene
Odontostomia dunnensis species	Animalia : Mollusca : Gastropoda : Pyramidellidae : Odontostomia : *Odontostomia dunnensis*	56 - 47.8 Ma Eocene
Odontostomia vacavillensis species	Animalia : Mollusca : Gastropoda : Pyramidellidae : Odontostomia : *Odontostomia vacavillensis*	56 - 47.8 Ma Eocene
Syrnola concava species	Animalia : Mollusca : Gastropoda : Pyramidellidae : Syrnola : *Syrnola concava*	56 - 47.8 Ma Eocene
Syrnola unicostata species	Animalia : Mollusca : Gastropoda : Pyramidellidae : Syrnola : *Syrnola unicostata*	56 - 47.8 Ma Eocene
Turbonilla dunnensis species	Animalia : Mollusca : Gastropoda : Pyramidellidae : Turbonilla : *Turbonilla dunnensis*	56 - 47.8 Ma Eocene
Turbella elegans species	Animalia : Mollusca : Gastropoda : Rissoidae : Turboella : *Turbella elegans*	56 - 47.8 Ma Eocene
Pecten (Propeamusium) vacavillensis species	Animalia : Mollusca : Bivalvia : Pectinida : Pectinidae : Pecten : *Pecten (Propeamusium) vacavillensis*	56 - 47.8 Ma Eocene
Dentalium vacavillensis species	Animalia : Mollusca : Scaphopoda : Dentaliida : Dentaliidae : Dentalium : *Dentalium vacavillensis*	56 - 47.8 Ma Eocene
Cadulus meganosensis species	Animalia : Mollusca : Scaphopoda : Gadilida : Gadilidae : Cadulus : *Cadulus meganosensis*	56 - 47.8 Ma Eocene
Nodosaria raphanus species	Foraminifera : Nodosariidae : Nodosaria : *Nodosaria raphanus*	56 - 47.8 Ma Eocene
Nodosaria vertebralis species	Chromista : Foraminifera : Lagenida : Nodosariidae : Nodosaria : *Nodosaria vertebralis*	56 - 47.8 Ma Eocene
Nodosaria consobrina species	Foraminifera : Nodosariidae : Nodosaria : *Nodosaria consobrina*	56 - 47.8 Ma Eocene
Marginulina cushmani species	Chromista : Foraminifera : Lagenida : Vaginulinidae : Marginulina : *Marginulina cushmani*	56 - 47.8 Ma Eocene
Cristellaria kemperi species	Chromista : Foraminifera : Tubothalamea : Miliolida : Peneroplidae : Peneroplis : *Cristellaria kemperi*	56 - 47.8 Ma Eocene
Cristellaria vacavillensis species	Chromista : Foraminifera : Tubothalamea : Miliolida : Peneroplidae : Peneroplis : *Cristellaria vacavillensis*	56 - 47.8 Ma Eocene
Pulvinulina helicella species	Pulvinulina : *Pulvinulina helicella*	56 - 47.8 Ma Eocene

Fossil Localities

Click to show 17 fossil localities

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Yolo_County,_California
Wikidata ID:	Q109709
GeoNames ID:	5410882

Localities in this Region

USA

California
- Yolo County
  - Capay
    - Unnamed Au occurrence [1]
  - Coast Ranges

USA

California
- Yolo County
  - Coast Ranges
    - Knoxville Mining District
      - Knoxville area
        Harrison Mine (New England Mine; Grizzly Mine; January Mine; Ruby Mine)
        Reed Mine (California Mine; Royal Mine; Soda Springs Mine)
        Unnamed Hg mine [1]
  - Putah Creek Mining District
    - Putah Creek
    - Winters
      - Putah Creek Mine
      - Putah Creek placers
  - Unspecified Fluorspar occurrence [1]

Other Regions, Features and Areas that Intersect

North AmericaContinent

Coast MountainsMountain Range

North America PlateTectonic Plate

California Central ValleyAccretionary Complex
California Coast RangesAccretionary Complex
Franciscan DomainDomain
Great Valley BasinBasin
Great Valley DomainDomain
Sacramento BasinBasin

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

Mining and Scientific Press (1879), Fluor-spar in Yolo County: Mining and Scientific Press: 39-370

Goodyear, Watson Andrews (1890), Alameda, Colusa, Contra Costa, Lake, Marin, Mendocino, Napa, Yolo Counties: California Mining Bureau. (Report 10): 10: 91-95, 153-164, 165, 227-271, 299, 314, 322, 349-363, 793-794.

Watts, Wm. L. (1890), Merced, Sacramento, San Joaquin, San Mateo, Santa Clara, Santa Cruz, Solano, Stanislaus, Yolo Counties: California Mining Bureau. (Report 10): 10: 324-331, 496-514, 548-566, 586-594, 604-605, 620-626, 659-671, 680-690, 773-793.

Bradley, W.W. (1916a), Colusa, Glenn, Lake, Marin, Napa, Solano, Sonoma, Yolo County: California Mining Bureau. Report 14: 175-370.

Averitt, Paul (1945), Quicksilver deposits of the Knoxville district, Napa, Yolo, and Lake Counties, California: California Journal of Mines & Geology, California Division Mines (Report 41): 41(2): 65-90.

O'Brien, J.C. (1950), Mines and Mineral Resources of Yolo County, California, California Journal of Mines and Geology (Report 46): 46: 459-460.

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References

Yolo County, California, USA i
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