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Riverside Co., California, USA

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Neighbouring regions:
Locality type:County


A county covering 7,208 square miles (18,670 km²) in southern California, between San Bernardino County to the N, Imperial and San Diego Counties to the S and Orange County to the W, reaching from just W of the greater Los Angeles area to the Arizona border (Colorado River). The central and eastern areas are mostly desert. The western portion enjoys a Mediterranean climate.

Major tectonic features include the San Andreas fault zone that traverses the county from S of Indio (NW shore of the Salton Sea) NW through Desert Hot Springs and further NW into San Bernardino County.

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

252 valid minerals. 10 (TL) - type locality of valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc.

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:

Acanthite
Formula: Ag2S
Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Localities: Reported from at least 12 localities in this region.
Aegirine
Formula: NaFe3+Si2O6
Afwillite
Formula: Ca3(HSiO4)2 · 2H2O
'commodity:Aggregates'
Åkermanite
Formula: Ca2Mg(Si2O7)
Albite
Formula: Na(AlSi3O8)
Localities: Reported from at least 23 localities in this region.
Albite var: Andesine
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Albite var: Cleavelandite
Formula: Na(AlSi3O8)
Localities: Reported from at least 8 localities in this region.
Albite var: Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
'Albite-Anorthite Series'
Localities: Reported from at least 7 localities in this region.
Allanite-(Ce)
Formula: {CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
'Allanite Group'
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Localities:
Almandine
Formula: Fe2+3Al2(SiO4)3
Localities: Reported from at least 9 localities in this region.
'Almandine-Spessartine Series'
Amarantite
Formula: Fe3+2(SO4)2O · 7H2O
Amblygonite
Formula: LiAl(PO4)F
'Amphibole Asbestos'
Amphibole Supergroup
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Amphibole Supergroup var: Uralite
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Anatase
Formula: TiO2
Andalusite
Formula: Al2(SiO4)O
'Andesite'
Andradite
Formula: Ca3Fe3+2(SiO4)3
Anglesite
Formula: PbSO4
Anhydrite
Formula: CaSO4
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Anorthite
Formula: Ca(Al2Si2O8)
Anorthite var: Bytownite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Anthophyllite
Formula: ☐{Mg2}{Mg5}(Si8O22)(OH)2
Antigorite
Formula: Mg3(Si2O5)(OH)4
'commodity:Antimony'
Formula: Sb
'Apatite'
Localities: Reported from at least 14 localities in this region.
'Aplite'
'Apophyllite'
Aragonite
Formula: CaCO3
Arcanite
Formula: K2SO4
Arsenopyrite
Formula: FeAsS
Localities: Reported from at least 6 localities in this region.
'Asbestos'
Localities: Reported from at least 9 localities in this region.
'Asbestos var: Mountain Leather'
'commodity:Asbestos'
'Ash'
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Autunite
Formula: Ca(UO2)2(PO4)2 · 11H2O
Axinite-(Fe)
Formula: Ca2Fe2+Al2BSi4O15OH
'Axinite Group'
Azurite
Formula: Cu3(CO3)2(OH)2
Localities: Reported from at least 20 localities in this region.
Baryte
Formula: BaSO4
Localities: Reported from at least 10 localities in this region.
'Bauxite'
Bayldonite
Formula: PbCu3(AsO4)2(OH)2
Bementite
Formula: Mn7Si6O15(OH)8
'Bentonite'
Beryl
Formula: Be3Al2(Si6O18)
Localities: Reported from at least 14 localities in this region.
Beryl var: Aquamarine
Formula: Be3Al2Si6O18
Localities: Reported from at least 7 localities in this region.
Beryl var: Goshenite
Formula: Be3Al2(Si6O18)
Beryl var: Morganite
Formula: Be3Al2(Si6O18)
Beryllonite
Formula: NaBePO4
Beyerite
Formula: Ca(BiO)2(CO3)2
'Biotite'
Localities: Reported from at least 22 localities in this region.
'commodity:Bismuth'
Formula: Bi
Bismuthinite
Formula: Bi2S3
'Bloodstone'
Formula: SiO2
Böhmite
Formula: AlO(OH)
Bornite
Formula: Cu5FeS4
Brucite
Formula: Mg(OH)2
Localities: Reported from at least 8 localities in this region.
Bultfonteinite
Formula: Ca2(HSiO4)F · H2O
Calcite
Formula: CaCO3
Localities: Reported from at least 27 localities in this region.
Calcite var: Calcite Satin Spar
Formula: CaCO3
Calcite var: Iceland Spar
Formula: CaCO3
'Calc-silicate rock'
'Californite'
Carnotite
Formula: K2(UO2)2(VO4)2 · 3H2O
Cassiterite
Formula: SnO2
Localities: Reported from at least 9 localities in this region.
Cassiterite var: Wood Tin
Formula: SnO2
Cebollite
Formula: Ca5Al2(SiO4)3(OH)4
Celadonite
Formula: K(Mg,Fe2+)Fe3+(Si4O10)(OH)2
Celestine
Formula: SrSO4
Cerussite
Formula: PbCO3
Localities: Reported from at least 13 localities in this region.
'Chabazite'
Chalcocite
Formula: Cu2S
Localities: Reported from at least 6 localities in this region.
Chalcophanite
Formula: (Zn,Fe,Mn)Mn3O7 · 3H2O
Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 41 localities in this region.
'Chert'
'Chlorite Group'
Localities: Reported from at least 6 localities in this region.
Chondrodite
Formula: (Mg,Fe2+)5(SiO4)2(F,OH)2
Localities: Reported from at least 7 localities in this region.
Chromite
Formula: Fe2+Cr3+2O4
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Localities: Reported from at least 50 localities in this region.
Chrysotile
Formula: Mg3(Si2O5)(OH)4
'Clay'
Localities: Reported from at least 68 localities in this region.
'commodity:Clay'
Localities: Reported from at least 11 localities in this region.
'Clays'
Localities: Reported from at least 7 localities in this region.
Clinobisvanite
Formula: Bi(VO4)
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Clinohumite
Formula: Mg9(SiO4)4F2
'Clinoptilolite'
Clinozoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Clintonite
Formula: Ca(Mg,Al)3(Al3SiO10)(OH)2
Clintonite var: Valuevite
Formula: Ca(Mg,Al)3(Al3SiO10)(OH)2
Columbite-(Fe)
Formula: FeNb2O6
'Columbite-(Fe)-Columbite-(Mn) Series'
Localities: Reported from at least 7 localities in this region.
Columbite-(Mn)
Formula: (Mn,Fe)(Nb,Ta)2O6
'Conglomerate'
Conichalcite
Formula: CaCu(AsO4)(OH)
Cookeite
Formula: (Al2Li)Al2(AlSi3O10)(OH)8
Copiapite
Formula: Fe2+Fe3+4(SO4)6(OH)2 · 20H2O
Copper
Formula: Cu
'commodity:Copper'
Formula: Cu
'Copper Stain'
Cordierite
Formula: (Mg,Fe)2Al3(AlSi5O18)
'Cortlandite'
Corundum
Formula: Al2O3
Localities: Reported from at least 9 localities in this region.
Corundum var: Sapphire
Formula: Al2O3
'Crestmoreite'
Cristobalite
Formula: SiO2
Crocoite
Formula: PbCrO4
Cuprite
Formula: Cu2O
Localities: Reported from at least 7 localities in this region.
Cuprosklodowskite
Formula: Cu(UO2)2(SiO3OH]2 · 6H2O
Cuprotungstite
Formula: Cu2(WO4)(OH)2
Cuspidine
Formula: Ca4(Si2O7)(F,OH)2
'Dachiardite'
Danburite
Formula: CaB2Si2O8
Datolite
Formula: CaB(SiO4)(OH)
'Deweylite'
Formula: Mg4Si3O10 · 6H2O ?
Diopside
Formula: CaMgSi2O6
Localities: Reported from at least 14 localities in this region.
Diopside var: Diallage
Formula: CaMgSi2O6
'Diorite'
Localities: Reported from at least 6 localities in this region.
'Dolerite'
Dolomite
Formula: CaMg(CO3)2
Localities: Reported from at least 7 localities in this region.
'Dolostone'
Localities: Reported from at least 6 localities in this region.
Dravite
Formula: Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Dumortierite
Formula: (Al,Fe3+)7(SiO4)3(BO3)O3
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Localities: Reported from at least 9 localities in this region.
'Ellestadite'
Enstatite
Formula: MgSiO3
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Localities: Reported from at least 47 localities in this region.
Epistilbite
Formula: CaAl2Si6O16 · 5H2O
Epsomite
Formula: MgSO4 · 7H2O
Ettringite
Formula: Ca6Al2(SO4)3(OH)12 · 26H2O
Fayalite
Formula: Fe2+2SiO4
'Feldspar Group'
Localities: Reported from at least 37 localities in this region.
'Feldspar Group var: Perthite'
Localities: Reported from at least 6 localities in this region.
'Felsite'
'Fergusonite'
'Ferro-Actinolite-Tremolite Series'
Ferrosilite
Formula: FeSiO3
Fluoborite
Formula: Mg3(BO3)(F,OH)3
Fluorapatite
Formula: Ca5(PO4)3F
Fluorellestadite (TL)
Formula: Ca5(SiO4)1.5(SO4)1.5F
Reference: Eakle, A.S. & A.F. Rogers (1914), Wilkeite, a new mineral of the apatite group, and okenite, its alteration product, from southern California, Am. Jour. Sci., 4th. Series: 37: 262-267.
Fluorellestadite var: Wilkeite (FRL)
Formula: Ca5(SiO4)1.5(SO4)1.5F
Reference: Eakle, A.S. & A.F. Rogers (1914), Wilkeite, a new mineral of the apatite group, and okenite, its alteration product, from southern California, Am. Jour. Sci., 4th. Series: 37: 262-267.
Fluorite
Formula: CaF2
Localities: Reported from at least 10 localities in this region.
'commodity:Fluorite (Fluorspar)'
Foitite
Formula: (□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OH
Forsterite
Formula: Mg2SiO4
Foshagite (TL)
Formula: Ca4(Si3O9)(OH)2
Reference: Eakle, Arthur Starr (1925a), Foshagite, a new silicate from Crestmore, California: American Mineralogist: 10: 97-99.
'Fulgurite'
Formula: SiO2
Reference: Jour. Geol., 54, no. 2, 117-122 (1946)
'Gabbro'
Gahnite
Formula: ZnAl2O4
Galena
Formula: PbS
Localities: Reported from at least 22 localities in this region.
'Ganister'
'Garnet Group'
Formula: X3Z2(SiO4)3
Localities: Reported from at least 33 localities in this region.
Gehlenite
Formula: Ca2Al(AlSiO7)
Geikielite
Formula: MgTiO3
Gersdorffite
Formula: NiAsS
Gibbsite
Formula: Al(OH)3
'Gneiss'
Localities: Reported from at least 6 localities in this region.
Goethite
Formula: α-Fe3+O(OH)
Gold
Formula: Au
Localities: Reported from at least 50 localities in this region.
'commodity:Gold'
Formula: Au
Localities: Reported from at least 11 localities in this region.
Gonnardite
Formula: (Na,Ca)2(Si,Al)5O10 · 3H2O
Goosecreekite
Formula: Ca[Al2Si6O16] · 5H2O
'Granite'
Localities: Reported from at least 62 localities in this region.
'commodity:Granite'
'Granitic gneiss'
'Granodiorite'
Graphite
Formula: C
Localities: Reported from at least 11 localities in this region.
Greenockite
Formula: CdS
Grossular
Formula: Ca3Al2(SiO4)3
Localities: Reported from at least 9 localities in this region.
Grossular var: Plazolite
Formula: Ca3Al2(SiO4)3
'Grossular-Hibschite Series'
Gypsum
Formula: CaSO4 · 2H2O
Localities: Reported from at least 26 localities in this region.
Gypsum var: Selenite
Formula: CaSO4 · 2H2O
'commodity:Gypsum & Anhydrite'
Gyrolite
Formula: NaCa16Si23AlO60(OH)8 · 14H2O
Halite
Formula: NaCl
Hambergite
Formula: Be2(BO3)(OH)
Harkerite
Formula: Ca12Mg4Al(BO3)3(SiO4)4(CO3)5 · H2O
Hastingsite
Formula: {Na}{Ca2}{Fe2+4Fe3+}(Al2Si6O22)(OH)2
Hawleyite
Formula: CdS
Hedenbergite
Formula: CaFe2+Si2O6
'Hellandite'
Hematite
Formula: Fe2O3
Localities: Reported from at least 30 localities in this region.
Hematite var: Martite
Formula: Fe2O3
Hematite var: Specularite
Formula: Fe2O3
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Hercynite
Formula: Fe2+Al2O4
'Heulandite subgroup'
Hillebrandite
Formula: Ca2(SiO3)(OH)2
Hollandite
Formula: Ba(Mn4+6Mn3+2)O16
'Hornblende'
Localities: Reported from at least 7 localities in this region.
'Hornblende-biotite granite'
'Hornfels'
Humite
Formula: (Mg,Fe2+)7(SiO4)3(F,OH)2
Huntite
Formula: CaMg3(CO3)4
Hydrocalumite
Formula: Ca4Al2(OH)12(Cl,CO3,OH)2 · 4H2O
Hydromagnesite
Formula: Mg5(CO3)4(OH)2 · 4H2O
Hydrotalcite
Formula: Mg6Al2(OH)16[CO3] · 4H2O
'Hydrotroilite'
Formula: FeS · H2O ?
Hydroxylapatite
Formula: Ca5(PO4)3(OH)
Hydroxylellestadite
Formula: Ca5(SiO4)1.5(SO4)1.5(OH)
Hydroxylherderite
Formula: CaBe(PO4)(OH,F)
Hydrozincite
Formula: Zn5(CO3)2(OH)6
'Hypersthene'
Formula: (Mg,Fe)SiO3
'Iddingsite'
Formula: MgO · Fe2O3 · 3SiO2·4H2O
Ilmenite
Formula: Fe2+TiO3
Localities: Reported from at least 9 localities in this region.
'Indicolite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Localities:
Iron
Formula: Fe
Iron var: Kamacite
Formula: (Fe,Ni)
'commodity:Iron'
Formula: Fe
'Jade'
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Jennite (TL)
Formula: Ca9(Si3O9)2(OH)8 · 8H2O
Reference: Carpenter, A.B., R.A. Chalmers, J.A. Gard, K. Speakman & H.F.W. Taylor (1966), Jennite, a new mineral: American Mineralogist: 51: 56-74; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 479.
Johannite
Formula: Cu(UO2)2(SO4)2(OH)2 · 8H2O
Kaolinite
Formula: Al2(Si2O5)(OH)4
Localities: Reported from at least 11 localities in this region.
'K Feldspar'
Kyanite
Formula: Al2(SiO4)O
'L6 chondrite meteorite'
'Labradorite'
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Laumontite
Formula: CaAl2Si4O12 · 4H2O
Laumontite var: Caporcianite
Formula: CaAl2Si4O12 · 4H2O
'commodity:Lead'
Formula: Pb
Lechatelierite
Formula: SiO2
Reference: Jour. Geol., 54, no. 2, 117-122 (1946)
'Lepidolite'
'Limestone'
Localities: Reported from at least 55 localities in this region.
'commodity:Limestone'
'Limonite'
Formula: (Fe,O,OH,H2O)
Localities: Reported from at least 12 localities in this region.
Lizardite
Formula: Mg3(Si2O5)(OH)4
Löllingite
Formula: FeAs2
Ludwigite
Formula: Mg2Fe3+(BO3)O2
Maghemite
Formula: Fe3+2O3
'Magnesian Limestone'
Magnesiocopiapite (TL)
Formula: MgFe3+4(SO4)6(OH)2 · 20H2O
Reference: American Mineralogist (1939): 24: 182; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 63.
Magnesioferrite
Formula: MgFe3+2O4
Magnesite
Formula: MgCO3
Localities: Reported from at least 6 localities in this region.
'commodity:Magnesite'
Magnetite
Formula: Fe2+Fe3+2O4
Localities: Reported from at least 34 localities in this region.
Magnetite var: Lodestone
Formula: Fe2+Fe3+2O4
Malachite
Formula: Cu2(CO3)(OH)2
Localities: Reported from at least 59 localities in this region.
'commodity:Manganese'
Formula: Mn
'Manganese Oxides'
Manganite
Formula: Mn3+O(OH)
Localities: Reported from at least 8 localities in this region.
'Marble'
Localities: Reported from at least 6 localities in this region.
Marcasite
Formula: FeS2
Margarite
Formula: CaAl2(Al2Si2O10)(OH)2
Marialite
Formula: Na4Al3Si9O24Cl
'Mariposite'
Formula: K(Al,Cr)2(Al,Si)4O10(OH)2
'Marl'
Meionite
Formula: Ca4Al6Si6O24CO3
Melanterite
Formula: Fe2+(H2O)6SO4 · H2O
'Melilite Group'
Formula: Ca2M(XSiO7)
Merwinite (TL)
Formula: Ca3Mg(SiO4)2
Reference: Larsen, Esper Signius & William F. Foshag (1921), Merwinite, a new calcium magnesium orthosilicate from Crestmore, California: American Mineralogist:6: 143-148; Woodford, A.O., Crippen, R.A., and Garner, K.B. (1941) Section Across Commercial Quarry, Crestmore, California. American Mineralogist: 26: 366.
'Metaconglomerate'
'Metasandstone'
'Metasedimentary rock'
'Metavolcanic rock'
'Mica Group'
Localities: Reported from at least 15 localities in this region.
'Mica schist'
Microcline
Formula: K(AlSi3O8)
Localities: Reported from at least 21 localities in this region.
Microlite Group
Formula: A2-mTa2X6-wZ-n
Mimetite
Formula: Pb5(AsO4)3Cl
Minium
Formula: Pb3O4
Molybdenite
Formula: MoS2
'Monazite'
Localities: Reported from at least 17 localities in this region.
Monazite-(Ce)
Formula: Ce(PO4)
Monticellite
Formula: CaMgSiO4
Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
'Monzonite'
Mordenite
Formula: (Na2,Ca,K2)Al2Si10O24 · 7H2O
Mottramite
Formula: PbCu(VO4)(OH)
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Localities: Reported from at least 27 localities in this region.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Localities: Reported from at least 6 localities in this region.
Nadorite
Formula: PbSbClO2
Nasonite
Formula: Pb6Ca4(Si2O7)3Cl2
Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Nekoite (TL)
Formula: Ca3Si6O15·7H2O
Reference: Gard, John Alan & H.F.W. Taylor (1956), Okenite and nekoite: Mineralogical Magazine: 31: 5-20; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 477.
Neotocite
Formula: (Mn,Fe,Mg)SiO3 · H2O
'Nephrite'
Niter
Formula: KNO3
Nitratine
Formula: NaNO3
Nontronite
Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
'Ochre'
Okenite
Formula: Ca10Si18O46 · 18H2O
Opal
Formula: SiO2 · nH2O
Opal var: Opal-AN
Formula: SiO2 · nH2O
Orpiment
Formula: As2S3
Orthoclase
Formula: K(AlSi3O8)
Localities: Reported from at least 14 localities in this region.
Oyelite
Formula: Ca10Si8B2O29 · 12.5H2O
Pargasite
Formula: {Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
'Pegmatite'
Localities: Reported from at least 8 localities in this region.
Periclase
Formula: MgO
Localities: Reported from at least 6 localities in this region.
Perovskite
Formula: CaTiO3
'Petrified Wood'
Reference: Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 282.
'Phengite'
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
'Phillipsite'
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Localities: Reported from at least 10 localities in this region.
Piemontite
Formula: {Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Plattnerite
Formula: PbO2
Plombièrite
Formula: [Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)
Plumbojarosite
Formula: Pb0.5Fe3+3(SO4)2(OH)6
'Porphyry'
Powellite
Formula: Ca(MoO4)
Prehnite
Formula: Ca2Al2Si3O10(OH)2
'Psilomelane'
Localities: Reported from at least 16 localities in this region.
Pyrite
Formula: FeS2
Localities: Reported from at least 52 localities in this region.
Pyrochlore Group
Formula: A2Nb2(O,OH)6Z
Pyrolusite
Formula: Mn4+O2
Localities: Reported from at least 16 localities in this region.
Pyromorphite
Formula: Pb5(PO4)3Cl
Pyrophyllite
Formula: Al2Si4O10(OH)2
'Pyroxene Group'
Pyrrhotite
Formula: Fe7S8
Localities: Reported from at least 8 localities in this region.
Quartz
Formula: SiO2
Localities: Reported from at least 82 localities in this region.
Quartz var: Agate
Quartz var: Brecciated Agate
Formula: SiO2
Quartz var: Chalcedony
Formula: SiO2
Localities: Reported from at least 12 localities in this region.
Quartz var: Fire Agate
Formula: SiO2
Quartz var: Fortification Agate
Formula: SiO2
Quartz var: Iris Agate
Formula: SiO2
Quartz var: Milky Quartz
Formula: SiO2
Quartz var: Moss Agate
Formula: SiO2
Quartz var: Rock Crystal
Formula: SiO2
Quartz var: Rose Quartz
Formula: SiO2
Localities: Reported from at least 6 localities in this region.
Quartz var: Smoky Quartz
Formula: SiO2
Localities: Reported from at least 9 localities in this region.
Quartz var: Star Quartz
Formula: SiO2
'Quartzite'
Localities: Reported from at least 9 localities in this region.
'Quartz-mica schist'
'Quartz-monzonite'
Realgar
Formula: As4S4
Rhodochrosite
Formula: MnCO3
Rhodonite
Formula: Mn2+SiO3
'Rhyolite'
Riversideite (TL)
Formula: Ca5(HSi3O9)2 · 2H2O
Reference: [Bull.Dept.Geol.Univ. California (1917) 10, 327-360 (347).
'Rubellite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Localities: Reported from at least 6 localities in this region.
Rutile
Formula: TiO2
Localities: Reported from at least 6 localities in this region.
Safflorite
Formula: (Co,Ni,Fe)As2
Samarskite-(Y)
Formula: (Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
'Sand'
'commodity:Sand and Gravel'
'Sandstone'
'Scapolite'
Localities: Reported from at least 6 localities in this region.
Scawtite
Formula: Ca7(Si3O9)2CO3 · 2H2O
Scheelite
Formula: Ca(WO4)
Localities: Reported from at least 25 localities in this region.
'Schist'
Localities: Reported from at least 23 localities in this region.
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Localities: Reported from at least 16 localities in this region.
Scolecite
Formula: CaAl2Si3O10 · 3H2O
Sepiolite
Formula: Mg4(Si6O15)(OH)2 · 6H2O
Serendibite
Formula: Ca4[Mg6Al6]O4[Si6B3Al3O36]
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Localities: Reported from at least 8 localities in this region.
'Serpentinite'
'Shale'
Siderite
Formula: FeCO3
Localities: Reported from at least 9 localities in this region.
'Silica'
Localities: Reported from at least 35 localities in this region.
'commodity:Silica'
'Silt'
Silver
Formula: Ag
'Skarn'
'Slate'
Localities: Reported from at least 8 localities in this region.
'commodity:Slate'
Smithsonite
Formula: ZnCO3
Spessartine
Formula: Mn2+3Al2(SiO4)3
Localities: Reported from at least 8 localities in this region.
Sphalerite
Formula: ZnS
Localities: Reported from at least 9 localities in this region.
Spinel
Formula: MgAl2O4
Localities: Reported from at least 7 localities in this region.
Spinel var: Ceylonite
Formula: MgAl2O4
Spodumene
Formula: LiAlSi2O6
Spodumene var: Kunzite
Formula: LiAlSi2O6
Spurrite
Formula: Ca5(SiO4)2(CO3)
Sternbergite
Formula: AgFe2S3
Stibiotantalite
Formula: Sb(Ta,Nb)O4
Stibnite
Formula: Sb2S3
Stilbite-Ca
Formula: NaCa4[Al9Si27O72] · nH2O
'Stilbite subgroup'
Stringhamite
Formula: CaCu(SiO4) · H2O
Strontianite
Formula: SrCO3
'Synchysite'
Szaibélyite
Formula: MgBO2(OH)
'Tactite'
Talc
Formula: Mg3Si4O10(OH)2
Localities: Reported from at least 8 localities in this region.
Tennantite
Formula: Cu6[Cu4(Fe,Zn)2]As4S13
Tenorite
Formula: CuO
Tetrahedrite
Formula: Cu6[Cu4(Fe,Zn)2]Sb4S13
Thaumasite
Formula: Ca3(SO4)[Si(OH)6](CO3) · 12H2O
'Thénardite'
Formula: Na2SO4
'Thomsonite'
Thomsonite-Ca
Formula: NaCa2[Al5Si5O20] · 6H2O
Thorite
Formula: Th(SiO4)
Thorite var: Orangite
Formula: Th(SiO4)
'Thorogummite'
Formula: (Th,U)(SiO4)1-x(OH)4x
Tilleyite (TL)
Formula: Ca5(Si2O7)(CO3)2
Reference: Larsen, E.S. and Dunham, K.C. (1933) Tilleyite, a new mineral from the contact zone at Crestmore, California. American Mineralogist: 18: 469-473.
'commodity:Tin'
Formula: Sn
Titanite
Formula: CaTi(SiO4)O
Localities: Reported from at least 13 localities in this region.
Tobermorite
Formula: [Ca4Si6O17 · 2H2O]·(Ca·3H2O)
'Tonalite'
Topaz
Formula: Al2(SiO4)(F,OH)2
'Tourmalinated Quartz'
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Localities: Reported from at least 30 localities in this region.
'Tourmaline var: Achroite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
'Tourmaline var: Watermelon Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
'Travertine'
Formula: CaCO3
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Localities: Reported from at least 10 localities in this region.
Troilite
Formula: FeS
'commodity:Tungsten'
Formula: W
Localities: Reported from at least 6 localities in this region.
Uraninite
Formula: UO2
Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Uranophane-β
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Uvarovite
Formula: Ca3Cr2(SiO4)3
Vanadinite
Formula: Pb5(VO4)3Cl
'Verdelite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Localities: Reported from at least 7 localities in this region.
Vermiculite
Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Localities: Reported from at least 6 localities in this region.
Vesuvianite
Formula: (Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Localities: Reported from at least 10 localities in this region.
Vonsenite (TL)
Formula: Fe2+2Fe3+(BO3)O2
Reference: Eakle, A.S. (1920), Vonsenite; a preliminary note on a new mineral from Riverside, California, American Mineralogist: 5: 141-143; Vlisidid, A.C. and Schaller, W.T. (1974) The identity of paigeite with vonsenite, and chemical analysis of vonsenite, ludwigite and hulsite. Neues Jahrbuch für Mineralogie, Monatshefte 1974(3-4): 95-105; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 236.
Wayneburnhamite
Formula: Pb9Ca6(Si2O7)3(SiO4)3
Whelanite
Formula: Cu2+2Ca6[Si6O17(OH)](CO3)(OH)3 · 2H2O
Wightmanite (TL)
Formula: Mg5(BO3)O(OH)5 · 2H2O
Reference: Murdoch, Joseph (1962a), Wightmanite, a new borate mineral from Crestmore, California: American Mineralogist: 47: 718-722; Segnit, Ralph E. & C.J. Lancucki (1963), Fluoborite from Crestmore, California: American Mineralogist: 48: 278-282; American Mineralogist (1974): 59: 985-1004; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 237.
Wollastonite
Formula: CaSiO3
Localities: Reported from at least 19 localities in this region.
'commodity:Wollastonite'
'Wollastonite-1A'
Formula: CaSiO3
'Wollastonite-2M'
Formula: CaSiO3
Wulfenite
Formula: Pb(MoO4)
Localities: Reported from at least 11 localities in this region.
'Xanthochroite'
Formula: CdS
Xenotime-(Y)
Formula: Y(PO4)
Localities: Reported from at least 13 localities in this region.
Xonotlite
Formula: Ca6(Si6O17)(OH)2
'Yttrocrasite-(Y)'
Formula: (Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
'Zinnwaldite'
Zircon
Formula: Zr(SiO4)
Localities: Reported from at least 8 localities in this region.
Zircon var: Cyrtolite
Formula: Zr[(SiO4),(OH)4]
Zoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Zoisite var: Thulite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Gold1.AA.05Au
Graphite1.CB.05aC
Iron1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
'Acanthite'2.BA.35Ag2S
Arsenopyrite2.EB.20FeAsS
Bismuthinite2.DB.05Bi2S3
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Gersdorffite2.EB.25NiAsS
Greenockite2.CB.45CdS
Hawleyite2.CB.05aCdS
Löllingite2.EB.15aFeAs2
Marcasite2.EB.10aFeS2
Molybdenite2.EA.30MoS2
Orpiment2.FA.30As2S3
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8