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Yreka, Siskiyou County, California, USAi
Regional Level Types
Yreka- not defined -
Siskiyou CountyCounty
CaliforniaState
USACountry

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09433890017272303555521.jpg
View of the Yreka placer gold mining area, ca. 1950.

Yreka, Siskiyou County, California, USA
09433890017272303555521.jpg
View of the Yreka placer gold mining area, ca. 1950.

Yreka, Siskiyou County, California, USA
09433890017272303555521.jpg
View of the Yreka placer gold mining area, ca. 1950.

Yreka, Siskiyou County, California, USA
Latitude & Longitude (WGS84):
41° 44' 8'' North , 122° 38' 4'' West
Latitude & Longitude (decimal):
41.73556,-122.63444
GRN:
N28W67
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Yreka7,597 (2017)0.0km
Montague1,399 (2017)8.9km
Grenada367 (2011)13.7km
Hornbrook248 (2011)20.5km
Fort Jones688 (2017)22.2km
Mindat Locality ID:
217439
Long-form identifier:
mindat:1:2:217439:9
GUID (UUID V4):
0



A city.

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

9 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:

ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ 'Clay minerals'
ⓘ Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
ⓘ Clinochlore var. Chromium-bearing Clinochlore
Formula: Mg5(Al,Cr)2Si3O10(OH)8
Colour: Pink
Description: NOTE: Material described as "pink chrome chlorite" in source reference.
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ Diopside var. Chromium-bearing Diopside
Formula: Ca(Mg,Cr)Si2O6
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Description: Crystals occur in ore.
ⓘ 'Feldspar Group'
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Native Gold
Formula: Au
Localities: Reported from at least 12 localities in this region.
Description: Placer material.
ⓘ Ottrélite
Formula: Mn2+Al2O(SiO4)(OH)2
Description: Occurs as a constituent of ottrelite schist.
ⓘ Quartz
Formula: SiO2
ⓘ Uvarovite
Formula: Ca3Cr3+2(SiO4)3

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘQuartz4.DA.05SiO2
Group 9 - Silicates
ⓘUvarovite9.AD.25Ca3Cr3+2(SiO4)3
ⓘOttrélite9.AF.85Mn2+Al2O(SiO4)(OH)2
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘDiopside
var. Chromium-bearing Diopside		9.DA.15Ca(Mg,Cr)Si2O6
ⓘ9.DA.15CaMgSi2O6
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘClinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
ⓘvar. Chromium-bearing Clinochlore9.EC.55Mg5(Al,Cr)2Si3O10(OH)8
Unclassified
ⓘ'Clay minerals'-
ⓘ'Feldspar Group'-

List of minerals for each chemical element

HHydrogen
Hⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ OttréliteMn2+Al2O(SiO4)(OH)2
OOxygen
Oⓘ Diopside var. Chromium-bearing DiopsideCa(Mg,Cr)Si2O6
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Oⓘ DiopsideCaMgSi2O6
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ OttréliteMn2+Al2O(SiO4)(OH)2
Oⓘ QuartzSiO2
Oⓘ UvaroviteCa3Cr23+(SiO4)3
MgMagnesium
Mgⓘ Diopside var. Chromium-bearing DiopsideCa(Mg,Cr)Si2O6
Mgⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
AlAluminium
Alⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ OttréliteMn2+Al2O(SiO4)(OH)2
SiSilicon
Siⓘ Diopside var. Chromium-bearing DiopsideCa(Mg,Cr)Si2O6
Siⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Siⓘ DiopsideCaMgSi2O6
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ OttréliteMn2+Al2O(SiO4)(OH)2
Siⓘ QuartzSiO2
Siⓘ UvaroviteCa3Cr23+(SiO4)3
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ Diopside var. Chromium-bearing DiopsideCa(Mg,Cr)Si2O6
Caⓘ DiopsideCaMgSi2O6
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ UvaroviteCa3Cr23+(SiO4)3
CrChromium
Crⓘ Diopside var. Chromium-bearing DiopsideCa(Mg,Cr)Si2O6
Crⓘ ChromiteFe2+Cr23+O4
Crⓘ Clinochlore var. Chromium-bearing ClinochloreMg5(Al,Cr)2Si3O10(OH)8
Crⓘ UvaroviteCa3Cr23+(SiO4)3
MnManganese
Mnⓘ OttréliteMn2+Al2O(SiO4)(OH)2
FeIron
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
AuGold
Auⓘ Native GoldAu

Localities in this Region

USA
USA

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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

Dana, Edward Salisbury (1886), On the crystallization of gold American Journal of Science, 3rd. series: 32: 132-138; […Zeitschr. Kristallographie, Band 12, 275-281(1886); …(abstract): Neues Jahrb., 1889: 226-227]: 138.
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.
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