Vote for your favorite mineral in #MinCup26! - Bournonite vs. Vesuvianite
Cogwheels of bournonite are up against colourful vesuvianite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Glenn County, California, USAi
Regional Level Types
Glenn CountyCounty
CaliforniaState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearchMineralogy
01020970017271978865867.jpg
Butte City (ca. 1854)

Glenn County, California, USA
08628140017271978895355.jpg
Upper Trench

Black Diamond Mine, Black Diamond group, Red Mountain, Glenn County, California, USA
04074520017271978937545.jpg
Main Pit

Black Diamond Mine, Black Diamond group, Red Mountain, Glenn County, California, USA
01020970017271978865867.jpg
Butte City (ca. 1854)

Glenn County, California, USA
08628140017271978895355.jpg
Upper Trench

Black Diamond Mine, Black Diamond group, Red Mountain, Glenn County, California, USA
04074520017271978937545.jpg
Main Pit

Black Diamond Mine, Black Diamond group, Red Mountain, Glenn County, California, USA
01020970017271978865867.jpg
Butte City (ca. 1854)

Glenn County, California, USA
08628140017271978895355.jpg
Upper Trench

Black Diamond Mine, Black Diamond group, Red Mountain, Glenn County, California, USA
Neighbouring regions:
Butte County, California, USA
Lake County, California, USA
Mendocino County, California, USA
Colusa County, California, USA
Tehama County, California, USA
Type:
County
Largest Settlements:
PlacePopulation
Orland7,550 (2017)
Willows6,069 (2017)
Hamilton City1,759 (2011)
Artois295 (2015)
Elk Creek163 (2011)
Mindat Locality ID:
3458
Long-form identifier:
mindat:1:2:3458:9
GUID (UUID V4):
0
Other Languages:
View 34 more...
French:
Comté de Glenn, Californie, États-Unis
German:
Glenn County, Kalifornien, Vereinigte Staaten
Italian:
Contea di Glenn, California, Stati Uniti d'America
Russian:
Гленн, Калифорния, Соединённые Штаты Америки
Simplified Chinese:
格伦县, 加利福尼亚州, 美国
Spanish:
Condado de Glenn, California, Estados Unidos
Albanian:
Glenn County, Kalifornia, Shtetet e Bashkuara të Amerikës
Arabic:
مقاطعة غلين, كاليفورنيا, الولايات المتحدة
Armenian:
Գլեն շրջան, Կալիֆոռնիա, Ամերիկայի Միացյալ Նահանգներ
Basque:
Glenn konderria, Kalifornia
Bavarian:
Glenn County, Kalifornien, Vaoanigte Stootn
Bishnupriya Manipuri:
গ্লেন কাউন্টি, ক্যালিফোর্নিয়া, তিলপারাষ্ট্র
Bulgarian:
Глен, Калифорния, Съединени американски щати
Cebuano:
Glenn County, California
Czech:
Glenn County, Kalifornie, Spojené státy americké
Danish:
Glenn County, Californien, USA
Dutch:
Glenn County, Verenigde Staten
Farsi/Persian:
شهرستان گلن، کالیفرنیا, کالیفرنیا, ایالات متحده آمریکا
Galician:
Condado de Glenn, California, Estados Unidos de América
Hungarian:
Glenn megye, Kalifornia, Amerikai Egyesült Államok
Irish Gaelic:
Contae Glenn, California, Stáit Aontaithe Mheiriceá
Japanese:
グレン郡, カリフォルニア州, アメリカ合衆国
Kapampangan:
Glenn County, California, Estados Unidos
Latin:
Glenn Comitatus, California, Civitates Foederatae Americae
Limburgian:
Glenn County, Californië, Vereinegde Staote vaan Amerika
Low Saxon/Low German:
Glenn County, Kalifornien, USA
Malayalam:
ഗ്ലെൻ കൗണ്ടി, കാലിഫോർണിയ
Norwegian:
Glenn County, California, USA
Polish:
Hrabstwo Glenn, Kalifornia, Stany Zjednoczone
Portuguese:
Condado de Glenn, Califórnia, Estados Unidos
Serbian:
Округ Глен, Калифорнија, Сједињене Америчке Државе
Serbo-Croatian:
Glenn County, Kalifornija, Sjedinjene Američke Države
Swedish:
Glenn County, Kalifornien, USA
Tagalog:
Glenn County, California, Estados Unidos
Turkish:
Glenn County, Kaliforniya, Amerika Birleşik Devletleri
Ukrainian:
Гленн, Каліфорнія, Сполучені Штати Америки
Urdu:
گلین کاؤنٹی، کیلیفورنیا, کیلیفورنیا, ریاستہائے متحدہ امریکا
Vietnamese:
Quận Glenn, California, Chủng Quốc Hoa Kỳ
Waray:
Condado han Glenn, California, Estados Unidos
Western Punjabi:
گلن 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

Mineral List

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

15 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
Habit: Radiating
Colour: Brown
Description: Occurrence speculated in referenced MRDS file.
ⓘ Chromite
Formula: Fe2+Cr3+2O4
Localities: Reported from at least 7 localities in this region.
ⓘ Cinnabar ?
Formula: HgS
Description: Unverified occurrence.
ⓘ Cuprite
Formula: Cu2O
ⓘ Magnesiochromite
Formula: MgCr2O4
ⓘ Magnesite
Formula: MgCO3
ⓘ Marcasite
Formula: FeS2
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Colour: Yellowish green
Description: Occurs as sericite schist.
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
Description: Occurs as sericite schist.
ⓘ Native Copper
Formula: Cu
Description: Pieces of native copper to 2 pounds (1 kg).
ⓘ Opal
Formula: SiO2 · nH2O
ⓘ 'Petrified Wood'
ⓘ 'Psilomelane'
Localities: Reported from at least 6 localities in this region.
ⓘ Pyrolusite
Formula: Mn4+O2
Localities: Reported from at least 7 localities in this region.
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Agate
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Talc
Formula: Mg3Si4O10(OH)2
ⓘ Tangeite
Formula: CaCu(VO4)(OH)
ⓘ Uvarovite
Formula: Ca3Cr3+2(SiO4)3

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
ⓘCinnabar ?2.CD.15aHgS
ⓘMarcasite2.EB.10aFeS2
Group 4 - Oxides and Hydroxides
ⓘCuprite4.AA.10Cu2O
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘMagnesiochromite4.BB.05MgCr2O4
ⓘQuartz
var. Agate		4.DA.05SiO2
ⓘvar. Chalcedony4.DA.05SiO2
ⓘ4.DA.05SiO2
ⓘOpal4.DA.10SiO2 · nH2O
ⓘPyrolusite4.DB.05Mn4+O2
Group 5 - Nitrates and Carbonates
ⓘMagnesite5.AB.05MgCO3
Group 8 - Phosphates, Arsenates and Vanadates
ⓘTangeite8.BH.35CaCu(VO4)(OH)
Group 9 - Silicates
ⓘUvarovite9.AD.25Ca3Cr3+2(SiO4)3
ⓘTalc9.EC.05Mg3Si4O10(OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘBementite ?9.EE.05Mn7Si6O15(OH)8
Unclassified
ⓘ'Psilomelane'-
ⓘ'Petrified Wood'-
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ BementiteMn7Si6O15(OH)8
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ OpalSiO2 · nH2O
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ TangeiteCaCu(VO4)(OH)
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
Cⓘ MagnesiteMgCO3
OOxygen
Oⓘ Quartz var. AgateSiO2
Oⓘ BementiteMn7Si6O15(OH)8
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ CupriteCu2O
Oⓘ MagnesiteMgCO3
Oⓘ MagnesiochromiteMgCr2O4
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ OpalSiO2 · nH2O
Oⓘ PyrolusiteMn4+O2
Oⓘ QuartzSiO2
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ TangeiteCaCu(VO4)(OH)
Oⓘ UvaroviteCa3Cr23+(SiO4)3
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
MgMagnesium
Mgⓘ MagnesiteMgCO3
Mgⓘ MagnesiochromiteMgCr2O4
Mgⓘ TalcMg3Si4O10(OH)2
AlAluminium
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ Quartz var. AgateSiO2
Siⓘ BementiteMn7Si6O15(OH)8
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ OpalSiO2 · nH2O
Siⓘ QuartzSiO2
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ UvaroviteCa3Cr23+(SiO4)3
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
SSulfur
Sⓘ CinnabarHgS
Sⓘ MarcasiteFeS2
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ TangeiteCaCu(VO4)(OH)
Caⓘ UvaroviteCa3Cr23+(SiO4)3
VVanadium
Vⓘ TangeiteCaCu(VO4)(OH)
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
Crⓘ MagnesiochromiteMgCr2O4
Crⓘ UvaroviteCa3Cr23+(SiO4)3
MnManganese
Mnⓘ BementiteMn7Si6O15(OH)8
Mnⓘ PyrolusiteMn4+O2
FeIron
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ MarcasiteFeS2
CuCopper
Cuⓘ CupriteCu2O
Cuⓘ Native CopperCu
Cuⓘ TangeiteCaCu(VO4)(OH)
HgMercury
Hgⓘ CinnabarHgS

Fossils

There are 26 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.

Occurrences26
Youngest Fossil Listed89.8 Ma (Late/Upper Cretaceous)
Oldest Fossil Listed145 Ma (Late Jurassic)
Stratigraphic Units
UnitNo. OccurrencesAge
Pacheco1293.9 - 89.8 Ma (Late/Upper Cretaceous)
Fossils from RegionClick here to show the list.
Accepted NameHierarchy Age
Cenodiscus
genus		Chromista : Radiozoa : Polycystina : Spumellaria : Cenodiscus145 - 139.8 Ma
Early/Lower Cretaceous
Cenosphaera
genus		Chromista : Radiozoa : Polycystina : Spumellaria : Actinommidae : Cenosphaera145 - 139.8 Ma
Early/Lower Cretaceous
Archaeodictyomitra
genus		Chromista : Radiozoa : Polycystina : Nassellaria : Archaeodictyomitridae : Archaeodictyomitra145 - 139.8 Ma
Early/Lower Cretaceous
Paronaella
genus		Chromista : Radiozoa : Polycystina : Spumellaria : Angulobracchiidae : Paronaella145 - 139.8 Ma
Early/Lower Cretaceous
Brancoceras
genus		Animalia : Mollusca : Cephalopoda : Ammonoidea : Brancoceratidae : Brancoceras105.3 - 93.5 Ma
Cretaceous
Mortoniceras
genus		Animalia : Mollusca : Cephalopoda : Ammonoidea : Brancoceratidae : Mortoniceras105.3 - 93.5 Ma
Cretaceous
Trigonia
genus		Animalia : Mollusca : Bivalvia : Trigoniida : Trigoniidae : Trigonia105.3 - 93.5 Ma
Cretaceous
Trigonocallista
genus		Animalia : Mollusca : Bivalvia : Venerida : Veneridae : Trigonocallista93.9 - 89.8 Ma
Late/Upper Cretaceous
Tethysetta boesii
species		Retaria : Radiolaria : Nassellaria : Parvicingulidae : Tethysetta : Tethysetta boesii145 - 139.8 Ma
Early/Lower Cretaceous
Calycoceras (Calycoceras) naviculare
species		Animalia : Mollusca : Cephalopoda : Ammonitida : Acanthoceratidae : Calycoceras : Calycoceras (Calycoceras) naviculare105.3 - 93.5 Ma
Cretaceous
Mirifusus baileyi
species		Chromista : Radiozoa : Polycystina : Nassellaria : Parvicingulidae : Mirifusus : Mirifusus baileyi145 - 139.8 Ma
Early/Lower Cretaceous
Parvicingula jonesi
species		Chromista : Radiozoa : Polycystina : Nassellaria : Parvicingulidae : Parvicingula : Parvicingula jonesi145 - 139.8 Ma
Early/Lower Cretaceous
Cymatoceras carlottense
species		Animalia : Mollusca : Cephalopoda : Nautilida : Nautilidae : Cymatoceras : Cymatoceras carlottense105.3 - 93.5 Ma
Cretaceous
Gyrodes expansa
species		Animalia : Mollusca : Gastropoda : Naticidae : Gyrodes : Gyrodes expansa93.9 - 89.8 Ma
Late/Upper Cretaceous
Trigonarca excavata
species		Animalia : Mollusca : Bivalvia : Arcida : Glycymerididae : Trigonarca : Trigonarca excavata93.9 - 89.8 Ma
Late/Upper Cretaceous
Syncyclonema latum
species		Animalia : Mollusca : Bivalvia : Pectinida : Entoliidae : Syncyclonema : Syncyclonema latum105.3 - 93.5 Ma
Cretaceous
Remondia oregonensis
species		Animalia : Mollusca : Bivalvia : Carditida : Crassatellidae : Remondia : Remondia oregonensis105.3 - 93.5 Ma
Cretaceous
Acteonina berryessensis
species		Animalia : Mollusca : Gastropoda : Acteoninidae : Acteonina : Acteonina berryessensis93.9 - 89.8 Ma
Late/Upper Cretaceous
Beudanticeras haydeni
species		Animalia : Mollusca : Cephalopoda : Ammonitida : Desmoceratidae : Beudanticeras : Beudanticeras haydeni105.3 - 93.5 Ma
Cretaceous
Fossil LocalitiesClick to show 3 fossil localities

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Glenn_County,_California
Wikidata ID:Q271601
GeoNames ID:5352462

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. (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).
Bradley, W.W. (1916a), Colusa, Glenn, Lake, Marin, Napa, Solano, Sonoma, Yolo County: California Mining Bureau. Report 14: 175-370.
Averill, Charles V. (1929), Redding field division, Lassen and Modoc, Napa, Lake, Glenn, Mendocino Counties: California Journal of Mines and Geology, California Division Mines (Report 25): 25(4): 2-19, 213-242, 337-365, 418-426, 456-467.
Rynearson, Garn Arthur & Francis G. Wells (1944), Geology of the Grey Eagle and some nearby chromite deposits, in Glenn County, California: USGS Bulletin 945-A: pp. i-iv, 1-22.
O’Brien, J.C. & Lewis Timothy Braun (1952), Mines and mineral resources of Glenn County, California: California Journal of Mines and Geology (Report 48): 48: 29-45.
Quick NavTopMineral ListRock TypesFossilsOther DatabasesLocalities in RegionOther RegionsReferences
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 4, 2026 04:07:30 Page updated: July 26, 2026 08:00:14
Go to top of page