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San Joaquin County, California, USAi
Regional Level Types
San Joaquin CountyCounty
CaliforniaState
USACountry

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PhotosMapsSearchMineralogy
07950620017272294647250.jpg
Hematite

Tracy, San Joaquin County, California, USA
07950620017272294647250.jpg
Hematite

Tracy, San Joaquin County, California, USA
07950620017272294647250.jpg
Hematite

Tracy, San Joaquin County, California, USA
Neighbouring regions:
Alameda County, California, USA
Contra Costa County, California, USA
Santa Clara County, California, USA
Calaveras County, California, USA
Amador County, California, USA
Stanislaus County, California, USA
Sacramento County, California, USA
Type:
County
Largest Settlements:
PlacePopulation
Stockton305,658 (2017)
Tracy87,075 (2017)
Manteca75,448 (2017)
Lodi64,596 (2017)
Lathrop20,866 (2017)
Ripon15,151 (2017)
Clubs in region:
Stockton Lapidary & Mineral Club (Stockton)
Mindat Locality ID:
204536
Long-form identifier:
mindat:1:2:204536:1
GUID (UUID V4):
0
Other Languages:
View 33 more...
French:
Comté de San Joaquin, Californie, États-Unis
German:
San Joaquin County, Kalifornien, Vereinigte Staaten
Italian:
Contea di San Joaquin, California, Stati Uniti d'America
Russian:
Сан-Хоакин, Калифорния, Соединённые Штаты Америки
Simplified Chinese:
聖華金縣, 加利福尼亚州, 美国
Spanish:
Condado de San Joaquín, California, Estados Unidos
Albanian:
San Joaquin County, Kalifornia, Shtetet e Bashkuara të Amerikës
Arabic:
مقاطعة سان هواكوين, كاليفورنيا, الولايات المتحدة
Armenian:
Սան Խոակին շրջան, Կալիֆոռնիա, Ամերիկայի Միացյալ Նահանգներ
Basque:
San Joaquin konderria, Kalifornia
Bavarian:
San Joaquin County, Kalifornien, Vaoanigte Stootn
Bishnupriya Manipuri:
সান যোয়াকুয়িন কাউন্টি, ক্যালিফোর্নিয়া, তিলপারাষ্ট্র
Bulgarian:
Сан Уакин, Калифорния, Съединени американски щати
Cebuano:
San Joaquin County, California
Czech:
San Joaquin County, Kalifornie, Spojené státy americké
Danish:
San Joaquin County, Californien, USA
Dutch:
San Joaquin County, Verenigde Staten
Estonian:
San Joaquini maakond, California, Ameerika Ühendriigid
Farsi/Persian:
شهرستان سن‌واکین، کالیفرنیا, کالیفرنیا, ایالات متحده آمریکا
Hungarian:
San Joaquin megye, Kalifornia, Amerikai Egyesült Államok
Irish Gaelic:
Contae San Joaquin, California, Stáit Aontaithe Mheiriceá
Japanese:
サンホアキン郡, カリフォルニア州, アメリカ合衆国
Kapampangan:
San Joaquin County, California, Estados Unidos
Latin:
San Joaquin Comitatus, California, Civitates Foederatae Americae
Limburgian:
San Joaquin County, Californië, Vereinegde Staote vaan Amerika
Low Saxon/Low German:
San Joaquin County, Kalifornien, USA
Norwegian:
San Joaquin County, California, USA
Polish:
Hrabstwo San Joaquin, Kalifornia, Stany Zjednoczone
Portuguese:
Condado de San Joaquin, Califórnia, Estados Unidos
Serbian:
Округ Сан Хоакин, Калифорнија, Сједињене Америчке Државе
Serbo-Croatian:
San Joaquin County, Kalifornija, Sjedinjene Američke Države
Swedish:
San Joaquin County, Kalifornien, USA
Tagalog:
San Joaquin County, California, Estados Unidos
Turkish:
San Joaquin County, Kaliforniya, Amerika Birleşik Devletleri
Ukrainian:
Сан-Хоакін, Каліфорнія, Сполучені Штати Америки
Urdu:
سان جوکن کاؤنٹی، کیلیفورنیا, کیلیفورنیا, ریاستہائے متحدہ امریکا
Vietnamese:
Quận San Joaquin, California, Chủng Quốc Hoa Kỳ
Waray:
Condado han San Joaquin, California, Estados Unidos
Western Punjabi:
سان جواکون 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.


Mineral List

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

19 valid minerals.

Rock Types Recorded


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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Bementite
Formula: Mn7Si6O15(OH)8
Description: Occurs as granulated masses as a constituent of ore.
ⓘ 'Clay minerals'
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Gypsum
Formula: CaSO4 · 2H2O
ⓘ Hausmannite
Formula: Mn2+Mn3+2O4
ⓘ Hematite
Formula: Fe2O3
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ Inesite ?
Formula: Ca2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Colour: Rose-red
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
References:
USGS Bull 427
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ 'Manganese Oxides'
ⓘ Manganite
Formula: Mn3+O(OH)
References:
USGS Bull 427
ⓘ Native Gold
Formula: Au
Localities: Reported from at least 16 localities in this region.
ⓘ Native Iridium
Formula: (Ir,Os,Ru)
ⓘ Native Iridium var. Ruthenosmiridium
Formula: (Ir,Os,Ru)
ⓘ Native Platinum
Formula: Pt
Description: about 50% Pt.
ⓘ 'Psilomelane'
ⓘ Pyrolusite
Formula: Mn4+O2
ⓘ Quartz
Formula: SiO2
ⓘ Rhodochrosite
Formula: MnCO3
ⓘ Rhodonite
Formula: CaMn3Mn[Si5O15]
Habit: Massive
Description: Not plentiful.
ⓘ Sperrylite
Formula: PtAs2
ⓘ Sveite
Formula: (K3-x◻x)Al8(NO3)6O8Cl4 · nH2O
ⓘ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
ⓘNative Iridium1.AF.10(Ir,Os,Ru)
ⓘNative Platinum1.AF.10Pt
ⓘNative Iridium
var. Ruthenosmiridium		1.AF.10(Ir,Os,Ru)
Group 2 - Sulphides and Sulfosalts
ⓘSperrylite2.EB.05aPtAs2
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHausmannite4.BB.10Mn2+Mn3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘQuartz4.DA.05SiO2
ⓘPyrolusite4.DB.05Mn4+O2
ⓘManganite4.FD.15Mn3+O(OH)
Group 5 - Nitrates and Carbonates
ⓘRhodochrosite5.AB.05MnCO3
ⓘSveite5.ND.20(K3-x◻x)Al8(NO3)6O8Cl4 · nH2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘGypsum7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
ⓘZircon9.AD.30Zr(SiO4)
ⓘRhodonite9.DK.05CaMn3Mn[Si5O15]
ⓘInesite ?9.DL.05Ca2(Mn,Fe)7Si10O28(OH)2 · 5H2O
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
ⓘBementite9.EE.05Mn7Si6O15(OH)8
Unclassified
ⓘ'Clay minerals'-
ⓘ'Psilomelane'-
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Manganese Oxides'-

List of minerals for each chemical element

HHydrogen
Hⓘ BementiteMn7Si6O15(OH)8
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ ManganiteMn3+O(OH)
Hⓘ Sveite(K3-x◻x)Al8(NO3)6O8Cl4 · nH2O
CCarbon
Cⓘ RhodochrositeMnCO3
NNitrogen
Nⓘ Sveite(K3-x◻x)Al8(NO3)6O8Cl4 · nH2O
OOxygen
Oⓘ BementiteMn7Si6O15(OH)8
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ HausmanniteMn2+Mn23+O4
Oⓘ HematiteFe2O3
Oⓘ IlmeniteFe2+TiO3
Oⓘ InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ ManganiteMn3+O(OH)
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ PyrolusiteMn4+O2
Oⓘ QuartzSiO2
Oⓘ RhodochrositeMnCO3
Oⓘ RhodoniteCaMn3Mn[Si5O15]
Oⓘ Sveite(K3-x◻x)Al8(NO3)6O8Cl4 · nH2O
Oⓘ ZirconZr(SiO4)
Oⓘ Garnet GroupX3Z2(SiO4)3
AlAluminium
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ Sveite(K3-x◻x)Al8(NO3)6O8Cl4 · nH2O
SiSilicon
Siⓘ BementiteMn7Si6O15(OH)8
Siⓘ InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Siⓘ KaoliniteAl2(Si2O5)(OH)4
Siⓘ QuartzSiO2
Siⓘ RhodoniteCaMn3Mn[Si5O15]
Siⓘ ZirconZr(SiO4)
Siⓘ Garnet GroupX3Z2(SiO4)3
SSulfur
Sⓘ GypsumCaSO4 · 2H2O
ClChlorine
Clⓘ Sveite(K3-x◻x)Al8(NO3)6O8Cl4 · nH2O
KPotassium
Kⓘ Sveite(K3-x◻x)Al8(NO3)6O8Cl4 · nH2O
CaCalcium
Caⓘ GypsumCaSO4 · 2H2O
Caⓘ InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Caⓘ RhodoniteCaMn3Mn[Si5O15]
TiTitanium
Tiⓘ IlmeniteFe2+TiO3
MnManganese
Mnⓘ BementiteMn7Si6O15(OH)8
Mnⓘ HausmanniteMn2+Mn23+O4
Mnⓘ InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Mnⓘ ManganiteMn3+O(OH)
Mnⓘ PyrolusiteMn4+O2
Mnⓘ RhodochrositeMnCO3
Mnⓘ RhodoniteCaMn3Mn[Si5O15]
FeIron
Feⓘ HematiteFe2O3
Feⓘ IlmeniteFe2+TiO3
Feⓘ InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Feⓘ MagnetiteFe2+Fe23+O4
AsArsenic
Asⓘ SperrylitePtAs2
ZrZirconium
Zrⓘ ZirconZr(SiO4)
RuRuthenium
Ruⓘ Native Iridium(Ir,Os,Ru)
Ruⓘ Native Iridium var. Ruthenosmiridium(Ir,Os,Ru)
OsOsmium
Osⓘ Native Iridium(Ir,Os,Ru)
Osⓘ Native Iridium var. Ruthenosmiridium(Ir,Os,Ru)
IrIridium
Irⓘ Native Iridium(Ir,Os,Ru)
Irⓘ Native Iridium var. Ruthenosmiridium(Ir,Os,Ru)
PtPlatinum
Ptⓘ Native PlatinumPt
Ptⓘ SperrylitePtAs2
AuGold
Auⓘ Native GoldAu

Fossils

There are 21 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.

Occurrences21
Youngest Fossil Listed0.01 Ma (Pleistocene)
Oldest Fossil Listed191 Ma (Early Jurassic)
Stratigraphic Units
UnitNo. OccurrencesAge
Tulare41.8 - 0.012 Ma (Pleistocene)
Neroly113.6 - 5.333 Ma (Miocene)
Asuncion - Moreno - Mustang Shale472.1 - 66 Ma (Late/Upper Cretaceous)
Fossils from RegionClick here to show the list.
Accepted NameHierarchy Age
Axonoceras
genus		Animalia : Mollusca : Cephalopoda : Ammonoidea : Nostoceratidae : Axonoceras72.1 - 66 Ma
Late/Upper Cretaceous
Baculites
genus		Animalia : Mollusca : Cephalopoda : Ammonoidea : Baculitidae : Baculites70.6 - 66 Ma
Late/Upper Cretaceous
Gaudryceras
genus		Animalia : Mollusca : Cephalopoda : Ammonoidea : Gaudryceratidae : Gaudryceras72.1 - 66 Ma
Late/Upper Cretaceous
Nostoceras
genus		Animalia : Mollusca : Cephalopoda : Ammonoidea : Nostoceratidae : Nostoceras70.6 - 66 Ma
Late/Upper Cretaceous
Solenoceras
genus		Animalia : Mollusca : Cephalopoda : Ammonoidea : Diplomoceratidae : Solenoceras72.1 - 66 Ma
Late/Upper Cretaceous
Acipenser
genus		Animalia : Chordata : Actinopteri : Acipenseriformes : Acipenseridae : Acipenser1.8 - 0.012 Ma
Pleistocene
Ichthyosaurus
genus		Animalia : Chordata : Reptilia : Ichthyosauridae : Ichthyosaurus190.8 - 93.9 Ma
Mesozoic
Cyprinidae
family		Animalia : Chordata : Actinopterygii : Cypriniformes : Cyprinidae1.8 - 0.012 Ma
Pleistocene
Equinae
subfamily		Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Equinae23.03 - 5.333 Ma
Miocene
Hipparionini
tribe		Animalia : Chordata : Mammalia : Perissodactyla : Equidae : Hipparionini23.03 - 5.333 Ma
Miocene
Centrarchidae
family		Animalia : Chordata : Actinopteri : Centrarchiformes : Centrarchidae1.8 - 0.012 Ma
Pleistocene
Orthodon
genus		Animalia : Chordata : Actinopterygii : Cypriniformes : Cyprinidae : Orthodon1.8 - 0.012 Ma
Pleistocene
Pachydiscus (Neodesmoceras)
subgenus		Animalia : Mollusca : Cephalopoda : Ammonitida : Pachydiscidae : Pachydiscus : Pachydiscus (Neodesmoceras)70.6 - 66 Ma
Late/Upper Cretaceous
Baculites anceps
species		Animalia : Mollusca : Cephalopoda : Ammonoidea : Baculitidae : Baculites : Baculites anceps72.1 - 66 Ma
Late/Upper Cretaceous
Pachydiscus (Pachydiscus)
subgenus		Animalia : Mollusca : Cephalopoda : Ammonitida : Pachydiscidae : Pachydiscus : Pachydiscus (Pachydiscus)70.6 - 66 Ma
Late/Upper Cretaceous
Damesites hetonaiensis
species		Animalia : Mollusca : Cephalopoda : Ammonoidea : Desmoceratidae : Damesites : Damesites hetonaiensis70.6 - 66 Ma
Late/Upper Cretaceous
Fossil LocalitiesClick to show 7 fossil localities

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/San_Joaquin_County,_California
Wikidata ID:Q108499
GeoNames ID:5392126

Localities in this Region

USA
USA

Other Regions, Features and Areas that Intersect

North AmericaContinent
North America PlateTectonic Plate
North America Plate
USA

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

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.
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.
Lowell, F.L. (1916), Mines and mineral resources of the counties of Del Norte, Humboldt, Mendocino, Mariposa, Merced, San Joaquin, and Stanislaus: California Mining Bureau. Report 14: 371-425 569-604, 627-634.
Laizure, Clyde McK (1925), San Francisco field division: California Journal of Mines and Geology, California Mining Bureau (Report 21): 21(3): 173-222.
Volin, M.E. & E.J. Matson (1949), Investigation of the Ladd manganese deposits San Joaquin County, California: US Bureau Mines Report of Investigation 4580.
California Journal of Mines and Geology (1955) (Report 51): 51(1): circa 35-93.
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