The open encyclopedia of minerals
Mineralogist.org
Minerals A–ZSearchCollectionsBrowse by PropertyIdentify a SpecimenCompare MineralsLocalities MapGlossaryContribute Search the Database →

Tetragonal minerals

One 4-fold axis; two equal horizontal axes.

← All properties
385 minerals · Tetragonal minerals
Wulfenite specimen
Wulfenite PbMoO₄
MolybdateTetragonalMohs 2.5–3
Zircon specimen
Zircon Zr(SiO₄)
SilicateTetragonalMohs 7.5
Abernathyite specimen
Abernathyite K(UO₂)(AsO₄)·3H₂O
ArsenateTetragonalMohs 2–3
A
Abswurmbachite Cu²⁺Mn³⁺₆O₈(SiO₄)
SilicateTetragonal
Adranosite specimen
Adranosite (NH₄)₄NaAl₂(SO₄)₄Cl(OH)₂
SulfateTetragonal
A
Adranosite-(Fe) (NH₄)₄NaFe₂(SO₄)₄Cl(OH)₂
SulfateTetragonal
A
Alumovesuvianite Ca₁₉Al(Al₁₀Mg₂)Si₁₈O₆₉(OH)₉
SilicateTetragonalMohs 6.5
A
Alumoåkermanite (Ca,Na)₂(Al,Mg,Fe²⁺)(Si₂O₇)
SilicateTetragonal
Aminoffite specimen
Aminoffite Ca₃(BeOH)₂Si₃O₁₀
SilicateTetragonalMohs 5.5–6
A
Ammonioleucite (NH₄)(AlSi₂O₆)
SilicateTetragonal
A
Ammoniomathesiusite (NH₄)₅(UO₂)₄(SO₄)₄(VO₅)·4H₂O
VanadateTetragonalMohs 2.5
Analcime specimen
Analcime Na(AlSi₂O₆)·H₂O
SilicateTetragonalMohs 5–5.5
Anatase specimen
Anatase TiO₂
Oxides & HydroxideTetragonalMohs 5.5–6
A
Andymcdonaldite Fe₂TeO₆
Oxides & HydroxideTetragonal
A
Anyuiite AuPb₂
Native ElementTetragonal
Apuanite specimen
Apuanite (Fe²⁺Fe³⁺₂)(Fe³⁺₂Sb³⁺₄)O₁₂S
Oxides & HydroxideTetragonal
A
Arapovite (K₁₋ₓ   ₓ)(Ca,Na)₂U⁴⁺Si₈O₂₀ [x ≈ 0.5]
SilicateTetragonalMohs 5.5–6
Archerite specimen
Archerite H₂K(PO₄)
PhosphateTetragonal
A
Argutite GeO₂
Oxides & HydroxideTetragonalMohs 6–7
A
Armellinoite-(Ce) Ca₄Ce⁴⁺(AsO₄)₄·H₂O
ArsenateTetragonalMohs 3–3.5
Arsenohauchecornite specimen
Arsenohauchecornite Ni₁₈Bi₃AsS₁₆
SulfosaltTetragonal
Arsenotučekite specimen
Arsenotučekite Ni₁₈Sb₃AsS₁₆
SulfosaltTetragonal
Arsenudinaite specimen
Arsenudinaite NaMg₄(AsO₄)₃
ArsenateTetragonalMohs 3.5
Arsenuranospathite specimen
Arsenuranospathite Al(UO₂)₂(AsO₄)₂F·20H₂O
ArsenateTetragonalMohs 2
Arsiccioite specimen
Arsiccioite AgHg₂TlAs₂S₆
SulfosaltTetragonalMohs 2–2.5
Ashburtonite specimen
Ashburtonite HCu₄Pb₄Si₄O₁₂(HCO₃)₄(OH)₄Cl
SilicateTetragonal
Ashcroftine-(Y) specimen
Ashcroftine-(Y) K₅Na₅Y₁₂Si₂₈O₇₀(OH)₂(CO₃)₈·8H₂O
SilicateTetragonalMohs 5
A
Ashoverite Zn(OH)₂
Oxides & HydroxideTetragonal
Asisite specimen
Asisite Pb₇SiO₈Cl₂
SilicateTetragonal
A
Atelisite-(Y) Y₄Si₃O₈(OH)₈
SilicateTetragonal
A
Atlasovite Cu²⁺₆Fe³⁺Bi³⁺O₄(SO₄)₅·KCl
SulfateTetragonalMohs 2–2.5
A
Axelite Na₁₄Cu₇(AsO₄)₈F₂Cl₂
ArsenateTetragonal
Bambollaite specimen
Bambollaite Cu(Se,Te)₂
SulfideTetragonal
Bandylite specimen
Bandylite CuB(OH)₄Cl
HalideTetragonalMohs 2.5
Baotite specimen
Baotite Ba₄(Ti,Nb,W)₈O₁₆(SiO₃)₄Cl
SilicateTetragonalMohs 6
B
Barquillite Cu₂(Cd,Fe)GeS₄
SulfideTetragonalMohs 4–4.5
Bartonite specimen
Bartonite K₆Fe₂₀S₂₆S
SulfideTetragonalMohs 3.5
B
Bavsiite Ba₂V₂O₂[Si₄O₁₂]
SilicateTetragonalMohs 4
B
Bellidoite Cu₂Se
SulfideTetragonalMohs 3
Benleonardite specimen
Benleonardite Ag₁₅Cu(Sb,As)₂S₇Te₄
SulfosaltTetragonal
B
Bennesherite Ba₂Fe²⁺Si₂O₇
SilicateTetragonalMohs 5
Bianchiniite specimen
Bianchiniite Ba₂(TiV)(As₂O₅)₂OF
ArsenateTetragonal
B
Bicapite [KNa₂Mg₂(H₂O)₂₅][H₂PV⁵⁺₁₂O₄₀(V⁵⁺O)₂]
Oxides & HydroxideTetragonalMohs 1.5
Biphosphammite specimen
Biphosphammite (NH₄)H₂(PO₄)
PhosphateTetragonal
Bismoclite specimen
Bismoclite BiOCl
HalideTetragonalMohs 2.5–3
B
Bortnikovite Pd₄Cu₃Zn
Native ElementTetragonal
Braggite specimen
Braggite PtS
SulfideTetragonal
Braunite specimen
Braunite Mn²⁺Mn³⁺₆O₈(SiO₄)
SilicateTetragonalMohs 6–6.5
B
Briartite Cu₂FeGeS₄
SulfideTetragonalMohs 4.5
Brindleyite specimen
Brindleyite (Ni,Al)₃(Si,Al)₂O₅(OH)₄
SilicateTetragonalMohs 2.5–3
Bukovite specimen
Bukovite Cu₄Tl₂Se₄
SulfideTetragonalMohs 2
B
Butianite Ni₆SnS₂
SulfideTetragonal
Byströmite specimen
Byströmite MgSb⁵⁺₂O₆
Oxides & HydroxideTetragonalMohs 7
B
Béhierite Ta(BO₄)
BorateTetragonalMohs 7–7.5
C
Cabvinite Th₂F₇(OH)·3H₂O
HalideTetragonal
Cahnite specimen
Cahnite Ca₂B(AsO₄)(OH)₄
ArsenateTetragonalMohs 3
Calomel specimen
Calomel HgCl
HalideTetragonalMohs 1.5
Calzirtite specimen
Calzirtite Ca₂Zr₅Ti₂O₁₆
Oxides & HydroxideTetragonalMohs 6–7
C
Caminite Mg₇(SO₄)₅(OH)₄·H₂O
SulfateTetragonalMohs 2.5
Carletonite specimen
Carletonite KNa₄Ca₄Si₈O₁₈(CO₃)₄(F,OH)·H₂O
SilicateTetragonalMohs 4–4.5
Cassiterite specimen
Cassiterite SnO₂
Oxides & HydroxideTetragonalMohs 6–7
Cerchiaraite-(Al) specimen
Cerchiaraite-(Al) Ba₄Al₄(Si₄O₁₂)O₂(OH)₄Cl₂[Si₂O₃(OH)₄]
SilicateTetragonalMohs 4.5
Cerchiaraite-(Fe) specimen
Cerchiaraite-(Fe) Ba₄Fe³⁺₄(Si₄O₁₂)O₂(OH)₄Cl₂[Si₂O₃(OH)₄]
SilicateTetragonalMohs 4.5
C
Cerchiaraite-(Mn) Ba₄Mn³⁺₄(Si₄O₁₂)O₂(OH)₄Cl₂[Si₂O₃(OH)₄]
SilicateTetragonalMohs 4.5
Cesplumtantite specimen
Cesplumtantite Cs₂Pb₃Ta₈O₂₄
Oxides & HydroxideTetragonal
C
Chadwickite (UO₂)(HAsO₃)
ArsenateTetragonalMohs 2
Chalcopyrite specimen
Chalcopyrite CuFeS₂
SulfideTetragonalMohs 3.5–4
Chalcothallite specimen
Chalcothallite (Cu,Fe,Ag)₆.₃(Tl,K)₂SbS₄
SulfosaltTetragonalMohs 2–2.5
Chantalite specimen
Chantalite CaAl₂(SiO₄)(OH)₄
SilicateTetragonal
Chatkalite specimen
Chatkalite Cu₆FeSn₂S₈
SulfideTetragonal
Chernikovite specimen
Chernikovite (H₃O)(UO₂)(PO₄)·3H₂O
PhosphateTetragonal
Chernovite-(Y) specimen
Chernovite-(Y) Y(AsO₄)
ArsenateTetragonalMohs 4.5
C
Chiolite Na₅Al₃F₁₄
HalideTetragonalMohs 3.5–4
Chlorbartonite specimen
Chlorbartonite K₆Fe₂₄S₂₆Cl
SulfideTetragonalMohs 4
C
Chromatite CaCr⁶⁺O₄
Oxides & HydroxideTetragonal
C
Chrombismite Bi₁₆CrO₂₇
Oxides & HydroxideTetragonalMohs 5.5
C
Chrysothallite K₆Cu₆Tl³⁺Cl₁₇(OH)₄·H₂O
HalideTetragonalMohs 3
Coccinite specimen
Coccinite HgI₂
HalideTetragonal
Coffinite specimen
Coffinite U(SiO₄)·nH₂O
SilicateTetragonalMohs 5–6
Colinowensite specimen
Colinowensite BaCuSi₂O₆
SilicateTetragonalMohs 4
Coombsite specimen
Coombsite KMn²⁺₁₃(Si,Al)₁₈O₄₂(OH)₁₄
SilicateTetragonal
Cooperite specimen
Cooperite PtS
SulfideTetragonalMohs 4–5
Cristobalite specimen
Cristobalite SiO₂
SilicateTetragonalMohs 6–7
Crookesite specimen
Crookesite Cu₇TlSe₄
SulfideTetragonalMohs 2.5–3
Cryptomelane specimen
Cryptomelane K(Mn⁴⁺₇Mn³⁺)O₁₆
Oxides & HydroxideTetragonalMohs 6–6.5
Cumengeite specimen
Cumengeite Pb₂₁Cu₂₀Cl₄₂(OH)₄₀·6H₂O
HalideTetragonalMohs 2.5
Cuprorivaite specimen
Cuprorivaite CaCuSi₄O₁₀
SilicateTetragonalMohs 5
Cuprostibite specimen
Cuprostibite Cu₂(Sb,Tl)
SulfosaltTetragonal
Cuprotungstite specimen
Cuprotungstite Cu²⁺₃(WO₄)₂(OH)₂
TungstateTetragonal
Cyprine specimen
Cyprine Ca₁₉Cu²⁺(Al,Mg)₁₂Si₁₈O₆₉(OH)₉
SilicateTetragonalMohs 6.5
Cyrilovite specimen
Cyrilovite NaFe³⁺₃(PO₄)₂(OH)₄·2H₂O
PhosphateTetragonalMohs 4
Daubréeite specimen
Daubréeite BiO(OH)
Oxides & HydroxideTetragonalMohs 2–2.5
D
Deltalumite (Al₀.₆₇   ₀.₃₃)Al₂O₄
Oxides & HydroxideTetragonal
Denningite specimen
Denningite CaMn²⁺Te⁴⁺₄O₁₀
Oxides & HydroxideTetragonalMohs 4
Diaboleite specimen
Diaboleite CuPb₂Cl₂(OH)₄
HalideTetragonalMohs 2.5
Downeyite specimen
Downeyite SeO₂
Oxides & HydroxideTetragonal
D
Dreyerite Bi(VO₄)
VanadateTetragonalMohs 2–3
Ecdemite specimen
Ecdemite Pb₆As³⁺₂O₇Cl₄
HalideTetragonalMohs 2.5–3
Effenbergerite specimen
Effenbergerite BaCuSi₄O₁₀
SilicateTetragonal
Ekanite specimen
Ekanite Ca₂ThSi₈O₂₀
SilicateTetragonalMohs 4.5–5
E
Eskebornite CuFeSe₂
SulfideTetragonalMohs 3–3.5
Eucairite specimen
Eucairite CuAgSe
SulfideTetragonalMohs 2.5
E
Ewingite Mg₈Ca₈(UO₂)₂₄(CO₃)₃₀O₄(OH)₁₂(H₂O)₁₃₈
CarbonateTetragonalMohs 2
Famatinite specimen
Famatinite Cu₃SbS₄
SulfosaltTetragonalMohs 3.5
Favreauite specimen
Favreauite PbBiCu₆O₄(SeO₃)₄(OH)·H₂O
Oxides & HydroxideTetragonalMohs 3
F
Fergusonite-(Ce) CeNbO₄·0.3H₂O
Oxides & HydroxideTetragonalMohs 5.5–6.5
Fergusonite-(Y) specimen
Fergusonite-(Y) YNbO₄
Oxides & HydroxideTetragonalMohs 5.5–6.5
F
Ferhodsite (Fe,Rh,Ni,Ir,Cu,Co,Pt)₉₋ₓS₈
SulfideTetragonal
F
Ferricoronadite Pb(Mn⁴⁺₆Fe³⁺₂)O₁₆
Oxides & HydroxideTetragonalMohs 6
F
Ferrokësterite Cu₂FeSnS₄
SulfideTetragonalMohs 4
Ferronickelplatinum specimen
Ferronickelplatinum Pt₂FeNi
Native ElementTetragonal
F
Ferrostalderite CuFe₂TlAs₂S₆
SulfosaltTetragonal
F
Fluorapophyllite-(Cs) CsCa₄(Si₈O₂₀)F(H₂O)₈
SilicateTetragonalMohs 4.5–5
Fluorapophyllite-(K) specimen
Fluorapophyllite-(K) KCa₄Si₈O₂₀F·8H₂O
SilicateTetragonalMohs 4.5–5
F
Fluorapophyllite-(NH_4_) (NH₄)Ca₄(Si₈O₂₀)F·8H₂O
SilicateTetragonalMohs 4.5–5
F
Fluorowardite NaAl₃(PO₄)₂(OH)₂F₂·2H₂O
PhosphateTetragonalMohs 5
F
Fluorvesuvianite Ca₁₉(Al,Mg)₁₃(SiO₄)₁₀(Si₂O₇)₄O(F,OH)₉
SilicateTetragonalMohs 6
Formicaite specimen
Formicaite Ca(CHOO)₂
Organic MineralTetragonalMohs 1
Fresnoite specimen
Fresnoite Ba₂TiO(Si₂O₇)
SilicateTetragonalMohs 3–4
Gainesite specimen
Gainesite Na₂(Be,Li)Zr₂(PO₄)₄·1.5H₂O
PhosphateTetragonalMohs 4
Gallite specimen
Gallite CuGaS₂
SulfideTetragonalMohs 3–3.5
G
Garronite-Ca Ca₃(Al₆Si₁₀O₃₂)·14H₂O
SilicateTetragonal
G
Gatedalite ZrMn²⁺₂Mn³⁺₄O₈(SiO₄)
SilicateTetragonal
Gehlenite specimen
Gehlenite Ca₂Al(SiAl)O₇
SilicateTetragonalMohs 5–6
Genkinite specimen
Genkinite Pt₄Sb₃
SulfideTetragonal
Gillespite specimen
Gillespite BaFe²⁺Si₄O₁₀
SilicateTetragonalMohs 3–4
Godlevskite specimen
Godlevskite (Ni,Fe)₉S₈
SulfideTetragonal
Gonnardite specimen
Gonnardite (Na,Ca)₂(Si,Al)₅O₁₀·3H₂O
SilicateTetragonalMohs 5
Gugiaite specimen
Gugiaite Ca₂BeSi₂O₇
SilicateTetragonalMohs 5
Hafnon specimen
Hafnon Hf(SiO₄)
SilicateTetragonal
Hardystonite specimen
Hardystonite Ca₂ZnSi₂O₇
SilicateTetragonalMohs 4
Hauchecornite specimen
Hauchecornite Ni₉BiSbS₈
SulfosaltTetragonalMohs 5
Hausmannite specimen
Hausmannite Mn²⁺Mn³⁺₂O₄
Oxides & HydroxideTetragonalMohs 5.5
Hematophanite specimen
Hematophanite Pb₄Fe³⁺₃O₈(Cl,OH)
HalideTetragonalMohs 2–3
Henritermierite specimen
Henritermierite Ca₃Mn³⁺₂(SiO₄)₂(OH)₄
SilicateTetragonal
H
Henrymeyerite Ba(Ti₇Fe²⁺)O₁₆
Oxides & HydroxideTetragonalMohs 5–6
Hetaerolite specimen
Hetaerolite ZnMn³⁺₂O₄
Oxides & HydroxideTetragonalMohs 6
Hiärneite specimen
Hiärneite Ca₂Zr₄Mn³⁺SbTiO₁₆
Oxides & HydroxideTetragonal
H
Hocartite Ag₂FeSnS₄
SulfideTetragonalMohs 4
H
Holtstamite Ca₃Al₂(SiO₄)₂(OH)₄
SilicateTetragonalMohs 6
H
Hongheite Ca₁₉Fe²⁺Al₄(Fe³⁺,Mg,Al)₈(   ,B)₄BSi₁₈O₆₉(O,OH)₉
SilicateTetragonal
H
Horomanite Fe₆Ni₃S₈
SulfideTetragonalMohs 3
H
Hrabákite Ni₉PbSbS₈
SulfosaltTetragonal
H
Hydroromarchite Sn²⁺₃O₂(OH)₂
Oxides & HydroxideTetragonal
Hydroxyapophyllite-(K) specimen
Hydroxyapophyllite-(K) KCa₄Si₈O₂₀(OH,F)·8H₂O
SilicateTetragonal
H
Hydroxylgugiaite (Ca₃   )Σ₄(Si₃.₅Be₂.₅)Σ₆O₁₁(OH)₃
SilicateTetragonalMohs 5
H
Hydroxymcglassonite-(K) KSr₄Si₈O₂₀(OH)·8H₂O
SilicateTetragonalMohs 4.5–5
Idaite specimen
Idaite Cu₃FeS₄
SulfideTetragonalMohs 2.5–3.5
Igelströmite specimen
Igelströmite Fe³⁺(SbPb)O₄
Oxides & HydroxideTetragonal
Indium specimen
Indium In
Native ElementTetragonal
I
Itsiite Ba₂Ca(BSi₂O₇)₂
SilicateTetragonalMohs 5.5
Jalpaite specimen
Jalpaite Ag₃CuS₂
SulfideTetragonalMohs 2–2.5
Janchevite specimen
Janchevite Pb₇V⁵⁺(O₈.₅   ₀.₅)Cl₂
HalideTetragonalMohs 2.5
Jasmundite specimen
Jasmundite Ca₁₁O₂(SiO₄)₄S
SilicateTetragonalMohs 5
J
Jeanbandyite Fe³⁺Sn(OH)₅O
Oxides & HydroxideTetragonalMohs 3.5
J
Jeffbenite Mg₃Al₂Si₃O₁₂
SilicateTetragonalMohs 7
J
Juanitaite (Cu,Ca,Fe)₁₀Bi(AsO₄)₄(OH)₁₁·2H₂O
ArsenateTetragonalMohs 1
Kalborsite specimen
Kalborsite K₆Al₄BSi₆O₂₀(OH)₄Cl
SilicateTetragonalMohs 6
K
Kalithallite K₃Tl³⁺Cl₆·2H₂O
HalideTetragonal
Kamaishilite specimen
Kamaishilite Ca₂(SiAl₂)O₆(OH)₂
SilicateTetragonal
Kamphaugite-(Y) specimen
Kamphaugite-(Y) CaY(CO₃)₂(OH)·H₂O
CarbonateTetragonalMohs 2–3
Kangjinlaite specimen
Kangjinlaite Ti₁₁Si₁₀
Native ElementTetragonal
Kenyaite specimen
Kenyaite Na₂Si₂₂O₄₁(OH)₈·6H₂O
SilicateTetragonal
K
Keutschite Cu₂AgAsS₄
SulfosaltTetragonal
Khatyrkite specimen
Khatyrkite CuAl₂
Native ElementTetragonalMohs 5.5
K
Kingsgateite ZrMo⁶⁺₂O₇(OH)₂·2H₂O
Oxides & HydroxideTetragonal
K
Kirchhoffite CsBSi₂O₆
SilicateTetragonalMohs 6–6.5
K
Kojonenite Pd₇₋ₓSnTe₂ (0.3 ≤ x ≤ 0.8)
SulfideTetragonal
K
Koninckite Fe³⁺(PO₄)·3H₂O
PhosphateTetragonalMohs 3.5
Kruijenite specimen
Kruijenite Ca₄Al₄(SO₄)F₂(OH)₁₆·2H₂O
SulfateTetragonalMohs 3
K
Kuramite Cu₃SnS₄
SulfideTetragonal
Kusachiite specimen
Kusachiite Cu²⁺Bi³⁺₂O₄
Oxides & HydroxideTetragonalMohs 4.5
K
Kuzminite HgBr
HalideTetragonalMohs 2
Kësterite specimen
Kësterite Cu₂ZnSnS₄
SulfideTetragonalMohs 4.5
L
Laforêtite AgInS₂
SulfideTetragonalMohs 3
Lannonite specimen
Lannonite HCa₄Mg₂Al₄(SO₄)₈F₉·32H₂O
SulfateTetragonalMohs 2
L
Leadamalgam HgPb₂
Native ElementTetragonalMohs 1.6
Lemanskiite specimen
Lemanskiite NaCaCu₅(AsO₄)₄Cl·3H₂O
ArsenateTetragonalMohs 2.5
L
Lenaite AgFeS₂
SulfideTetragonalMohs 4–4.5
Leucite specimen
Leucite K(AlSi₂O₆)
SilicateTetragonalMohs 5.5–6
L
Liebermannite KAlSi₃O₈
SilicateTetragonal
L
Lingunite NaAlSi₃O₈
SilicateTetragonal
Linzhiite specimen
Linzhiite FeSi₂
Native ElementTetragonalMohs 6.5
Lipscombite specimen
Lipscombite Fe²⁺Fe³⁺₂(PO₄)₂(OH)₂
PhosphateTetragonal
Litharge specimen
Litharge PbO
Oxides & HydroxideTetragonalMohs 2
Loparite-(Ce) specimen
Loparite-(Ce) (Na,Ce,Sr)(Ce,Th)(Ti,Nb)₂O₆
Oxides & HydroxideTetragonal
L
Lukkulaisvaaraite Pd₁₄Ag₂Te₉
SulfideTetragonalMohs 4
Luzonite specimen
Luzonite Cu₃AsS₄
SulfosaltTetragonalMohs 3.5
Macedonite specimen
Macedonite PbTiO₃
Oxides & HydroxideTetragonalMohs 5.5–6
Mackayite specimen
Mackayite Fe³⁺Te⁴⁺₂O₅(OH)
Oxides & HydroxideTetragonalMohs 4.5
Mackinawite specimen
Mackinawite (Fe,Ni)₁₊ₓS (x = 0-0.07)
SulfideTetragonal
M
Magnesiovesuvianite Ca₁₉Mg(Al₁₁Mg)Si₁₈O₆₉(OH)₉
SilicateTetragonalMohs 6
Mahnertite specimen
Mahnertite (Na,Ca,K)Cu₃(AsO₄)₂Cl·5H₂O
ArsenateTetragonalMohs 2–3
Majorite specimen
Majorite Mg₃(MgSi)(SiO₄)₃
SilicateTetragonalMohs 7–7.5
M
Manaevite-(Ce) Ca₁₁(Ce,H₂O,Ca)₈Mg(Al,Fe)₄(Mg,Ti,Fe³⁺)₈[Si₂O₇]₄[(SiO₄)₈(H₄O₄)₂](OH)₉
SilicateTetragonalMohs 4.5
M
Manganoquadratite AgMnAsS₃
SulfosaltTetragonalMohs 2–2.5
Manganvesuvianite specimen
Manganvesuvianite Ca₁₉Mn³⁺Al₁₀Mg₂(SiO₄)₁₀(Si₂O₇)₄O(OH)₉
SilicateTetragonalMohs 6–7
Manjiroite specimen
Manjiroite Na(Mn⁴⁺₇Mn³⁺)O₁₆
Oxides & HydroxideTetragonal
Mannardite specimen
Mannardite Ba(Ti₆V³⁺₂)O₁₆
Oxides & HydroxideTetragonalMohs 5.5–7
Marialite specimen
Marialite Na₄Al₃Si₉O₂₄Cl
SilicateTetragonalMohs 5.5–6
Mathesiusite specimen
Mathesiusite K₅(UO₂)₄(SO₄)₄(VO₅)(H₂O)₄
VanadateTetragonalMohs 2
Matlockite specimen
Matlockite PbClF
HalideTetragonalMohs 2.5–3
Mawsonite specimen
Mawsonite Cu₆Fe₂SnS₈
SulfideTetragonalMohs 3.5–4
Meionite specimen
Meionite Ca₄Al₆Si₆O₂₄(CO₃)
SilicateTetragonalMohs 5.5–6
Meliphanite specimen
Meliphanite Ca₄(Na,Ca)₄Be₄AlSi₇O₂₄(F,O)₄
SilicateTetragonalMohs 5–5.5
Mellite specimen
Mellite Al₂C₆(COO)₆·16H₂O
Organic MineralTetragonalMohs 2–2.5
M
Meta-ankoleite K(UO₂)(PO₄)·3H₂O
PhosphateTetragonal
Meta-autunite specimen
Meta-autunite Ca(UO₂)₂(PO₄)₂·6H₂O
PhosphateTetragonalMohs 2–2.5
Metaheinrichite specimen
Metaheinrichite Ba(UO₂)₂(AsO₄)₂·8H₂O
ArsenateTetragonalMohs 2.5
M
Metalodèvite Zn(UO₂)₂(AsO₄)₂·10H₂O
ArsenateTetragonal
M
Metanatroautunite Na(UO₂)(PO₄)·3H₂O
PhosphateTetragonalMohs 2–2.5
Metanováčekite specimen
Metanováčekite Mg(UO₂)₂(AsO₄)₂·8H₂O
ArsenateTetragonalMohs 2–2.5
Metatorbernite specimen
Metatorbernite Cu(UO₂)₂(PO₄)₂·8H₂O
PhosphateTetragonalMohs 2.5
Metazeunerite specimen
Metazeunerite Cu(UO₂)₂(AsO₄)₂·8H₂O
ArsenateTetragonalMohs 2–2.5
Milanriederite specimen
Milanriederite (Ca,REE)₁₉Fe³⁺Al₄(Mg,Al,Fe³⁺)₈Si₁₈O₆₈(OH,O)₁₀
SilicateTetragonalMohs 6
Minium specimen
Minium Pb²⁺₂Pb⁴⁺O₄
Oxides & HydroxideTetragonalMohs 2.5
Mitscherlichite specimen
Mitscherlichite K₂CuCl₄·2H₂O
HalideTetragonalMohs 2.5
Mongolite specimen
Mongolite Ca₄Nb₆Si₅O₂₄(OH)₁₀·6H₂O
SilicateTetragonalMohs 2
Montesommaite specimen
Montesommaite K₉(Si₂₃Al₉)O₆₄·10H₂O
SilicateTetragonal
M
Mooihoekite Cu₉Fe₉S₁₆
SulfideTetragonal
Mopungite specimen
Mopungite NaSb⁵⁺(OH)₆
Oxides & HydroxideTetragonalMohs 3
M
Moschelite HgI
HalideTetragonalMohs 1–2
M
Muirite Ba₁₀Ca₂Mn²⁺TiSi₁₀O₃₀(OH,Cl,F)₁₀
SilicateTetragonalMohs 2.5
M
Murunskite K₂(Cu,Fe)₄S₄
SulfideTetragonal
Mushistonite specimen
Mushistonite Cu²⁺Sn⁴⁺(OH)₆
Oxides & HydroxideTetragonalMohs 4–4.4
N
Nabokoite Cu₇Te⁴⁺O₄(SO₄)₅·KCl
SulfateTetragonalMohs 2–2.5
Narsarsukite specimen
Narsarsukite Na₂(Ti,Fe³⁺)Si₄(O,F)₁₁
SilicateTetragonalMohs 5.5–7
Natisite specimen
Natisite Na₂TiO(SiO₄)
SilicateTetragonalMohs 3–4
N
Natrouranospinite Na₂(UO₂)₂(AsO₄)₂·5H₂O
ArsenateTetragonal
N
Nazarovite Ni₁₂P₅
Native ElementTetragonal
Nefedovite specimen
Nefedovite Na₅Ca₄(PO₄)₄F
PhosphateTetragonalMohs 4.5
Neltnerite specimen
Neltnerite CaMn³⁺₆O₈(SiO₄)
SilicateTetragonalMohs 6
Niasite specimen
Niasite Ni²⁺₄.₅(AsO₄)₃
ArsenateTetragonalMohs 4
Nickelphosphide specimen
Nickelphosphide Ni₃P
Native ElementTetragonal
N
Nielsenite PdCu₃
Native ElementTetragonal
Niveolanite specimen
Niveolanite NaBe(CO₃)(OH)·2H₂O
CarbonateTetragonal
Novákite specimen
Novákite (Cu,Ag)₂₁As₁₀
SulfosaltTetragonalMohs 3–3.5
N
Nuwaite Ni₆GeS₂
SulfideTetragonal
O
Okayamalite Ca₂B₂SiO₇
SilicateTetragonalMohs 5.5
Ordoñezite specimen
Ordoñezite ZnSb⁵⁺₂O₆
Oxides & HydroxideTetragonalMohs 6.5

Showing the first 240 of 385 — search to narrow down.