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Minerals A–Z
Minerals
A–Z
Every mineral starting with
O
— 125 entries.
Show all letters
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ALL
A
375
B
380
C
480
D
179
E
138
F
325
G
249
H
290
I
87
J
110
K
300
L
239
M
503
N
197
O
125
P
441
Q
20
R
217
S
490
T
317
U
52
V
124
W
137
X
19
Y
47
Z
105
O
125 minerals
O'danielite
Na ZnZn₂(AsO₄)[AsO₃(OH)]₂
Oberthürite
Rh₃Ni₃₂S₃₂
Oberwolfachite
SrFe³⁺₃(AsO₄)(SO₄)(OH)₆
Obradovicite-KCu
[K₂(H₂O)₁₇Cu(H₂O)₆][Mo₈As₂Fe³⁺₃O₃₄(OH)₃]
Obradovicite-NaCu
[Na₂(H₂O)₁₇Cu(H₂O)₆][Mo₈As₂Fe³⁺₃O₃₄(OH)₃]
Obradovicite-NaNa
[Na₂(H₂O)₁₆Na(H₂O)₆][Mo₈As₂Fe³⁺₃O₃₃(OH)₄]
Obsidian
mineraloid
SiO₂-rich volcanic glass
Odigitriaite
CsNa₅Ca₅[Si₁₄B₂O₃₈]F₂
Odikhinchaite
Na₉Sr₃[(H₂O)₂Na]Ca₆Mn₃Zr₃NbSi(Si₂₄O₇₂)O(OH)₃(CO₃)·H₂O
Odinite
(Fe³⁺,Mg,Al,Fe²⁺)₂.₅(Si,Al)₂O₅(OH)₄
Odintsovite
K₂Na₄Ca₃Ti₂Be₄Si₁₂O₃₈
Oenite
CoSbAs
Offretite
KCaMg(Si₁₃Al₅)O₃₆·15H₂O
Oftedalite
KSc₂ ₂Be₃Si₁₂O₃₀
Ogdensburgite
Ca₂Fe³⁺₄Zn(AsO₄)₄(OH)₆·6H₂O
Ognitite
NiBiTe
Ohmilite
Sr₃(Ti,Fe³⁺)(Si₂O₆)₂(O,OH)·2H₂O
Ojuelaite
ZnFe³⁺₂(AsO₄)₂(OH)₂·4H₂O
Okanoganite-(Y)
(Y,REE,Ca,Na,Th)₁₆(Fe³⁺,Ti)(Si,B,P)₁₀(O,OH)₃₈F₁₀
Okayamalite
Ca₂B₂SiO₇
Okenite
Ca₁₀Si₁₈O₄₆·18H₂O
Okhotskite
Ca₂Mn²⁺Mn³⁺₂(Si₂O₇)(SiO₄)(OH)₂·H₂O
Okieite
Mg₃[V₁₀O₂₈]·28H₂O
Okruschite
Ca₂Mn²⁺₅Be₄(AsO₄)₆(OH)₄·6H₂O
Oldhamite
CaS
Oldsite
K₂Fe²⁺[(UO₂)(SO₄)₂]₂(H₂O)₈
Olekminskite
Sr₂(CO₃)₂
Olenite
NaAl₃Al₆(Si₆O₁₈)(BO₃)₃O₃(OH)
Olgite
(Ba,Sr)(Na,Sr,REE)₂Na(PO₄)₂
Oligoclase
variety
(Ca,Na)(Al,Si)₄O₈
Olivenite
Cu₂(AsO₄)(OH)
Olivine
group
(Mg,Fe)₂SiO₄
Olkhonskite
Cr₂Ti₃O₉
Olmiite
CaMn[SiO₃(OH)](OH)
Olmsteadite
KFe²⁺₂NbO₂(PO₄)₂·2H₂O
Olsacherite
Pb₂(Se⁶⁺O₄)(SO₄)
Olshanskyite
Ca₂[B₃O₃(OH)₆]OH·3H₂O
Olympite
LiNa₅(PO₄)₂
Omariniite
Cu₈Fe₂ZnGe₂S₁₂
Omeiite
OsAs₂
Ominelite
Fe²⁺Al₃O₂(BO₃)(SiO₄)
Omongwaite
Na₂Ca₅(SO₄)₆·3H₂O
Omphacite
(Ca,Na)(Mg,Fe,Al)Si₂O₆
Omsite
Ni₂Fe³⁺(OH)₆[Sb(OH)₆]
Ondrušite
CaCu₄(AsO₄)₂(AsO₃OH)₂·10H₂O
Oneillite
Na₁₅Ca₃Mn₃Fe₃Zr₃Nb(Si₂₅O₇₃)(O,OH,H₂O)₃(OH,Cl)₂
Onoratoite
Sb₈O₁₁Cl₂
Onyx
variety
SiO₂
Oosterboschite
(Pd,Cu)₇Se₅
Opal
SiO₂·nH₂O
Ophirite
Ca₂Mg₄[Zn₂Mn³⁺₂(H₂O)₂(Fe³⁺W₉O₃₄)₂]·46H₂O
Oppenheimerite
Na₂(UO₂)(SO₄)₂·3H₂O
Orcelite
Ni₅₋ₓAs₂ (x = 0.25)
Ordoñezite
ZnSb⁵⁺₂O₆
Oregonite
FeNi₂As₂
Oreillyite
Cr₂N
Organovaite-Mn
K₂MnNb₄(Si₄O₁₂)₂O₄·5-7H₂O
Organovaite-Zn
K₂Zn(Nb,Ti)₄(Si₄O₁₂)₂(O,OH)₄·6H₂O
Orickite
CuFeS₂·nH₂O
Orientite
Ca₈Mn³⁺₁₀(SiO₄)₃(Si₃O₁₀)₃(OH)₁₀·4H₂O
Orishchinite
Ni₂P
Orlandiite
Pb₃Cl₄(Se⁴⁺O₃)·H₂O
Orlovite
KLi₂Ti(Si₄O₁₀)(OF)
Orlymanite
Ca₄Mn²⁺₃Si₈O₂₀(OH)₆·2H₂O
Orpiment
As₂S₃
Orschallite
Ca₃(S⁴⁺O₃)₂(SO₄)·12H₂O
Orthobrannerite
U⁴⁺U⁶⁺Ti₄O₁₂(OH)₂
Orthoclase
K(AlSi₃O₈)
Orthocuproplatinum
Pt₃Cu
Orthojoaquinite-(Ce)
NaBa₂Fe²⁺Ce₂Ti₂(SiO₃)₈O₂(O,OH)·H₂O
Orthojoaquinite-(La)
NaBa₂Fe²⁺La₂Ti₂(SiO₃)₈O₂(OH,O,F)·H₂O
Orthominasragrite
V⁴⁺O(SO₄)·5H₂O
Orthopinakiolite
Mg₂Mn³⁺O₂(BO₃)
Orthoserpierite
CaCu₄(SO₄)₂(OH)₆·3H₂O
Orthowalpurgite
(UO₂)Bi₄O₄(AsO₄)₂·2H₂O
Osakaite
Zn₄(SO₄)(OH)₆·5H₂O
Osarizawaite
Pb(Al₂Cu²⁺)(SO₄)₂(OH)₆
Osarsite
OsAsS
Osbornite
TiN
Oscarkempffite
Ag₁₀Pb₄(Sb₁₇Bi₉)S₄₈
Oskarssonite
AlF₃
Osmium
Os
Osumilite
KFe₂(Al₅Si₁₀)O₃₀
Osumilite-(Mg)
KMg₂Al₃(Al₂Si₁₀)O₃₀
Oswaldpeetersite
(UO₂)₂(CO₃)(OH)₂·4H₂O
Otavite
Cd(CO₃)
Otjisumeite
PbGe₄O₉
Ottemannite
Sn₂S₃
Ottensite
Na₃(Sb₂O₃)₃(SbS₃)·3H₂O
Ottohahnite
Na₆(UO₂)₂(SO₄)₅(H₂O)₇·1.5H₂O
Ottoite
Pb₂TeO₅
Ottrélite
Mn²⁺Al₂O(SiO₄)(OH)₂
Otwayite
Ni₂(CO₃)(OH)₂·H₂O
Oulankaite
Pd₅Cu₄SnTe₂S₂
Ourayite
Ag₃Pb₄Bi₅S₁₃
Oursinite
Co(UO₂)₂(SiO₃OH)₂·6H₂O
Ovamboite
Cu₁₀Fe₃WGe₃S₁₆
Overite
CaMgAl(PO₄)₂(OH)·4H₂O
Owensite
(Ba,Pb)₆(Cu¹⁺,Fe,Ni)₂₅S₂₇
Owyheeite
Ag₃Pb₁₀Sb₁₁S₂₈
Oxammite
(NH₄)₂(C₂O₄)·H₂O
Oxo-magnesio-hastingsite
NaCa₂(Mg₂Fe³⁺₃)(Si₆Al₂)O₂₂O₂
Oxo-mangani-leakeite
NaNa₂(Mn³⁺₄Li)Si₈O₂₂O₂
Oxy-chromium-dravite
NaCr₃(Cr₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O
Oxy-dravite
Na(Al₂Mg)(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃O
Oxy-foitite
(Fe²⁺Al₂)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O
Oxy-schorl
Na(Fe²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O
Oxy-vanadium-dravite
NaV₃(V₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O
Oxybismutomicrolite
(Bi₁.₃₃ ₀.₆₇)Ta₂O₆O
Oxycalciomicrolite
Ca₂Ta₂O₇
Oxycalciopyrochlore
Ca₂Nb₂O₆O
Oxycalcioroméite
Ca₂Sb⁵⁺₂O₇
Oxykinoshitalite
BaMg₂Ti⁴⁺O₂(Si₂Al₂)O₁₀
Oxynatromicrolite
(Na,Ca,U)₂(Ta,Nb)₂O₆(O,F)
Oxyphlogopite
K(Mg,Ti,Fe)₃[(Si,Al)₄O₁₀](O,F)₂
Oxyplumboroméite
Pb₂Sb₂O₇
Oxystannomicrolite
Sn₂Ta₂O₆O
Oxystibiomicrolite
(Sb³⁺,Ca)₂Ta₂O₆O
Oxyvanite
V³⁺₂V⁴⁺O₅
Oxyyttrobetafite-(Y)
Y₂Ti₂O₆O
Oyelite
Ca₅BSi₄O₁₃(OH)₃·4H₂O
Oyonite
Ag₃Mn₂Pb₄Sb₇As₄S₂₄
Ozernovskite
Fe³⁺₄(Te⁴⁺O₄)(Te⁴⁺O₃)₄·7H₂O
Ozerovaite
Na₂KAl₃(AsO₄)₄
Örebroite
Mn²⁺₆(Sb⁵⁺Fe³⁺)(SiO₄)₂O₆