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