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Mohs 3
minerals
The reference mineral for 3 is calcite.
← All properties
822
minerals · Mohs 3 minerals
Baryte
Ba(SO₄)
Sulfate
Orthorhombic
Mohs 3–3.5
Group
Biotite
K(Mg,Fe)₃(AlSi₃O₁₀)(OH)₂
Silicate
Monoclinic
Mohs 2.5–3
Calcite
Ca(CO₃)
Carbonate
Hexagonal
Mohs 3
Copper
Cu
Native Element
Cubic
Mohs 2.5–3
Gold
Au
Native Element
Cubic
Mohs 2.5–3
Group
Lepidolite
K(Li,Al)₃(Si,Al)₄O₁₀(F,OH)₂
Silicate
Monoclinic
Mohs 2.5–3
Vanadinite
Pb₅(VO₄)₃Cl
Vanadate
Hexagonal
Mohs 3
Wulfenite
PbMoO₄
Molybdate
Tetragonal
Mohs 2.5–3
Abelsonite
NiC₃₁H₃₂N₄
Organic Mineral
Triclinic
Mohs 3
Abernathyite
K(UO₂)(AsO₄)·3H₂O
Arsenate
Tetragonal
Mohs 2–3
Adamsite-(Y)
NaY(CO₃)₂·6H₂O
Carbonate
Triclinic
Mohs 3
Admontite
MgB₆O₁₀·7H₂O
Borate
Monoclinic
Mohs 2–3
Aerinite
(Ca,Na)₆(Fe³⁺,Fe²⁺,Mg,Al)₄(Al,Mg)₆Si₁₂O₃₆(OH)₁₂(CO₃)·12H₂O
Silicate
Hexagonal
Mohs 3
Afwillite
Ca₃[SiO₄][SiO₂(OH)₂]·2H₂O
Silicate
Monoclinic
Mohs 3–4
A
Agaite
Pb₃Cu²⁺Te⁶⁺O₅(OH)₂(CO₃)
Carbonate
Orthorhombic
Mohs 2–3
Agardite-(Ce)
CeCu²⁺₆(AsO₄)₃(OH)₆·3H₂O
Arsenate
Hexagonal
Mohs 3
Agardite-(Nd)
NdCu²⁺₆(AsO₄)₃(OH)₆·3H₂O
Arsenate
Hexagonal
Mohs 3
A
Aklimaite
Ca₄[Si₂O₅(OH)₂](OH)₄·5H₂O
Silicate
Monoclinic
Mohs 3–4
A
Albrechtschraufite
MgCa₄F₂[UO₂(CO₃)₃]₂·17-18H₂O
Carbonate
Triclinic
Mohs 2–3
Aldridgeite
(Cd,Ca)(Cu,Zn)₄(SO₄)₂(OH)₆·3H₂O
Sulfate
Monoclinic
Mohs 3
A
Alexkhomyakovite
K₆(Ca₂Na)(CO₃)₅Cl·6H₂O
Carbonate
Hexagonal
Mohs 3
Allanpringite
Fe³⁺₃(PO₄)₂(OH)₃·5H₂O
Phosphate
Monoclinic
Mohs 3
A
Allochalcoselite
Cu¹⁺Cu²⁺₅PbO₂(SeO₃)₂Cl₅
Halide
Monoclinic
Mohs 3–4
Allophane
Al₂O₃(SiO₂)₁.₃₋₂.₀·2.5-3.0H₂O
Silicate
Mohs 3
Altaite
PbTe
Sulfide
Cubic
Mohs 3
Aluminium
Al
Native Element
Cubic
Mohs 2–3
Aluminocopiapite
(Al,Mg)Fe³⁺₄(SO₄)₆(OH,O)₂·20H₂O
Sulfate
Triclinic
Mohs 2–3
Alvanite
Zn²⁺Al₄(V⁵⁺O₃)₂(OH)₁₂·2H₂O
Oxides & Hydroxide
Monoclinic
Mohs 3–3.5
A
Amarillite
NaFe³⁺(SO₄)₂·6H₂O
Sulfate
Monoclinic
Mohs 2.5–3
Amesite
Mg₂Al(AlSiO₅)(OH)₄
Silicate
Triclinic
Mohs 2.5–3
Ammonioalunite
(NH₄)Al₃(SO₄)₂(OH)₆
Sulfate
Hexagonal
Mohs 2–3
A
Ammoniomagnesiovoltaite
(NH₄)₂Mg₅Fe³⁺₃Al(SO₄)₁₂·18H₂O
Sulfate
Cubic
Mohs 2–3
A
Ammoniovoltaite
(NH₄)₂Fe²⁺₅Fe³⁺₃Al(SO₄)₁₂(H₂O)₁₈
Sulfate
Cubic
Mohs 3–3.5
Amstallite
CaAl[(Al,Si)₄O₈(OH)₂](OH)₂·(H₂O,Cl)
Silicate
Monoclinic
Mohs 3–5
A
Anandite
BaFe²⁺₃(Si₃Fe³⁺)O₁₀S(OH)
Silicate
Monoclinic
Mohs 3–4
Andychristyite
PbCu²⁺Te⁶⁺O₅(H₂O)
Oxides & Hydroxide
Triclinic
Mohs 2–3
Andyrobertsite
KCdCu₅(AsO₄)₄[As(OH)₂O₂]·2H₂O
Arsenate
Monoclinic
Mohs 3
Anglesite
Pb(SO₄)
Sulfate
Orthorhombic
Mohs 2.5–3
Anhydrite
Ca(SO₄)
Sulfate
Orthorhombic
Mohs 3–3.5
Anilite
Cu₇S₄
Sulfide
Orthorhombic
Mohs 3
Ankinovichite
NiAl₄(V⁵⁺O₃)₂(OH)₁₂·2H₂O
Oxides & Hydroxide
Monoclinic
Mohs 2.5–3
Annite
KFe²⁺₃(AlSi₃O₁₀)(OH)₂
Silicate
Monoclinic
Mohs 2.5–3
Antarcticite
CaCl₂·6H₂O
Halide
Hexagonal
Mohs 2–3
Antigorite
Mg₃Si₂O₅(OH)₄
Silicate
Monoclinic
Mohs 2.5–3.5
Antimony
Sb
Native Element
Trigonal
Mohs 3–3.5
Antofagastaite
Na₂Ca(SO₄)₂·1.5H₂O
Sulfate
Monoclinic
Mohs 3
Aphthitalite
K₃Na(SO₄)₂
Sulfate
Hexagonal
Mohs 3
Aplowite
Co(SO₄)·4H₂O
Sulfate
Monoclinic
Mohs 3
A
Arakiite
ZnMn²⁺₁₂Fe³⁺₂(As³⁺O₃)(As⁵⁺O₄)₂(OH)₂₃
Oxides & Hydroxide
Monoclinic
Mohs 3–4
Argyrodite
Ag₈GeS₆
Sulfide
Orthorhombic
Mohs 2.5–3
Arisite-(Ce)
NaCe₂(CO₃)₂[F₂ₓ(CO₃)₁₋ₓ]F
Carbonate
Hexagonal
Mohs 3–3.5
A
Armellinoite-(Ce)
Ca₄Ce⁴⁺(AsO₄)₄·H₂O
Arsenate
Tetragonal
Mohs 3–3.5
Arseniopleite
NaCaMnMn₂(AsO₄)₃
Arsenate
Monoclinic
Mohs 3–4
Arsenmarcobaldiite
Pb₁₂(As₃.₂Sb₂.₈)Σ₆S₂₁
Sulfosalt
Triclinic
Mohs 3
A
Arsenohopeite
Zn₃(AsO₄)₂·4H₂O
Arsenate
Orthorhombic
Mohs 3
Arsenuranylite
Ca(UO₂)₄(AsO₄)₂(OH)₄·6H₂O
Arsenate
Orthorhombic
Mohs 2–3
A
Aspedamite
₁₂(Fe³⁺,Fe²⁺)₃Nb₄[Th(Nb,Fe³⁺)₁₂O₄₂][(H₂O),(OH)]₁₂
Oxides & Hydroxide
Cubic
Mohs 3–4
A
Aspidolite
NaMg₃(Si₃Al)O₁₀(OH)₂
Silicate
Triclinic
Mohs 2–3
Astrocyanite-(Ce)
Cu₂Ce₂(UO₂)(CO₃)₅(OH)₂·1.5H₂O
Carbonate
Hexagonal
Mohs 2–3
Astrophyllite
K₂NaFe²⁺₇Ti₂(Si₄O₁₂)₂O₂(OH)₄F
Silicate
Triclinic
Mohs 3
Atacamite
Cu₂Cl(OH)₃
Halide
Orthorhombic
Mohs 3–3.5
Auriacusite
Fe³⁺Cu²⁺(AsO₄)O
Arsenate
Orthorhombic
Mohs 3
Aurorite
Mn²⁺Mn⁴⁺₃O₇·3H₂O
Oxides & Hydroxide
Hexagonal
Mohs 3
Aurostibite
AuSb₂
Sulfide
Cubic
Mohs 3
Avdoninite
K₂Cu₅Cl₈(OH)₄·2H₂O
Halide
Monoclinic
Mohs 3
B
Backite
Pb₂AlTeO₆Cl
Halide
Hexagonal
Mohs 2–3
B
Bairdite
Pb₂Cu²⁺₄Te⁶⁺₂O₁₀(OH)₂(SO₄)·H₂O
Sulfate
Monoclinic
Mohs 2–3
B
Balestraite
KLi₂V⁵⁺Si₄O₁₂
Silicate
Monoclinic
Mohs 2.5–3
B
Bamfordite
Fe³⁺Mo₂O₆(OH)₃·H₂O
Molybdate
Triclinic
Mohs 2–3
Barahonaite-(Al)
(Ca,Cu,Na,Fe³⁺,Al)₁₂Al₂(AsO₄)₈(OH,Cl)ₓ·nH₂O
Arsenate
Monoclinic
Mohs 2–3
Barahonaite-(Fe)
(Ca,Cu,Na,Fe³⁺,Al)₁₂Fe³⁺₂(AsO₄)₈(OH,Cl)ₓ·nH₂O
Arsenate
Monoclinic
Mohs 2–3
B
Barentsite
Na₇Al(HCO₃)₂(CO₃)₂F₄
Carbonate
Triclinic
Mohs 3
B
Barikaite
Ag₃Pb₁₀(Sb₈As₁₁)Σ₁₉S₄₀
Sulfosalt
Monoclinic
Mohs 3
B
Bariosincosite
Ba(VO)₂(PO₄)₂·4H₂O
Phosphate
Monoclinic
Mohs 3
Barnesite
Na₂V⁵⁺₆O₁₆·3H₂O
Oxides & Hydroxide
Monoclinic
Mohs 3
Barstowite
Pb₄(CO₃)Cl₆·H₂O
Carbonate
Monoclinic
Mohs 3
B
Barysilite
Pb₈Mn(Si₂O₇)₃
Silicate
Hexagonal
Mohs 3
B
Barytolamprophyllite
(BaK)Ti₂Na₃Ti(Si₂O₇)₂O₂(OH)₂
Silicate
Monoclinic
Mohs 2–3
B
Batagayite
CaZn₂(Zn,Cu)₆(PO₄)₄[PO₃(OH)]₃·12H₂O
Phosphate
Monoclinic
Mohs 3
Baumhauerite
Pb₁₂As₁₆S₃₆
Sulfosalt
Triclinic
Mohs 3
B
Baylissite
K₂Mg(CO₃)₂·4H₂O
Carbonate
Monoclinic
Mohs 2–3
Bechererite
Zn₇Cu(OH)₁₃[SiO(OH)₃(SO₄)]
Silicate
Hexagonal
Mohs 2–3
B
Bellidoite
Cu₂Se
Sulfide
Tetragonal
Mohs 3
Belyankinite
Ca₁₋₂(Ti,Zr,Nb)₅O₁₂·9H₂O
Oxides & Hydroxide
Mohs 2–3
Bendadaite
Fe²⁺Fe³⁺₂(AsO₄)₂(OH)₂·4H₂O
Arsenate
Monoclinic
Mohs 3
Benstonite
Ba₆Ca₆Mg(CO₃)₁₃
Carbonate
Hexagonal
Mohs 3–4
Benyacarite
KTiMn²⁺₂Fe³⁺₂(PO₄)₄OF·15H₂O
Phosphate
Orthorhombic
Mohs 2.5–3
Beraunite
Fe³⁺₆(PO₄)₄O(OH)₄·6H₂O
Phosphate
Monoclinic
Mohs 3–4
Berborite
Be₂(BO₃)(OH)·H₂O
Borate
Hexagonal
Mohs 3
Berezanskite
KTi₂Li₃Si₁₂O₃₀
Silicate
Hexagonal
Mohs 2.5–3
Berthierite
FeSb₂S₄
Sulfosalt
Orthorhombic
Mohs 2–3
Betekhtinite
(Cu,Fe)₂₁Pb₂S₁₅
Sulfide
Orthorhombic
Mohs 3–3.5
Betpakdalite-CaCa
[Ca₂(H₂O)₁₇Ca(H₂O)₆][Mo⁶⁺₈As⁵⁺₂Fe³⁺₃O₃₆(OH)]
Oxides & Hydroxide
Monoclinic
Mohs 3
B
Betpakdalite-NaNa
[Na₂(H₂O)₁₆Na(H₂O)₆][Mo⁶⁺₈As⁵⁺₂Fe³⁺₃O₃₃(OH)₄]
Oxides & Hydroxide
Monoclinic
Mohs 3
Beyerite
CaBi₂O₂(CO₃)₂
Carbonate
Orthorhombic
Mohs 2–3
Biagioniite
Tl₂SbS₂
Sulfosalt
Monoclinic
Mohs 3
B
Bideauxite
AgPb₂F₂Cl₃
Halide
Cubic
Mohs 3
Bigcreekite
BaSi₂O₅·4H₂O
Silicate
Orthorhombic
Mohs 2–3
Bismoclite
BiOCl
Halide
Tetragonal
Mohs 2.5–3
Bismutite
Bi₂O₂(CO₃)
Carbonate
Orthorhombic
Mohs 2.5–3.5
Blatonite
(UO₂)(CO₃)·H₂O
Carbonate
Mohs 2–3
Blixite
Pb₈O₅(OH)₂Cl₄
Halide
Orthorhombic
Mohs 3
Blödite
Na₂Mg(SO₄)₂·4H₂O
Sulfate
Monoclinic
Mohs 2.5–3
Bobkingite
Cu₅Cl₂(OH)₈·2H₂O
Halide
Monoclinic
Mohs 3
Bokite
(Al,Fe)₁.₃(V⁵⁺,V⁴⁺,Fe³⁺)₈O₂₀·7.5H₂O
Oxides & Hydroxide
Monoclinic
Mohs 3
Boleite
KAg₉Pb₂₆Cu₂₄Cl₆₂(OH)₄₈
Halide
Cubic
Mohs 3–3.5
Bornite
Cu₅FeS₄
Sulfide
Cubic
Mohs 3–3.25
Borocookeite
LiAl₄(Si₃B)O₁₀(OH)₈
Silicate
Monoclinic
Mohs 3
Boromuscovite
KAl₂(Si₃B)O₁₀(OH)₂
Silicate
Monoclinic
Mohs 2.5–3
Bottinoite
NiSb⁵⁺₂(OH)₁₂·6H₂O
Oxides & Hydroxide
Hexagonal
Mohs 3
Boulangerite
Pb₅Sb₄S₁₁
Sulfosalt
Orthorhombic
Mohs 2.5–3
Bournonite
CuPbSbS₃
Sulfosalt
Orthorhombic
Mohs 2.5–3
Brandholzite
MgSb₂(OH)₁₂·6H₂O
Oxides & Hydroxide
Hexagonal
Mohs 2–3
Brattforsite
Mn₁₉As₁₂O₃₆Cl₂
Halide
Mohs 3–4
Brindleyite
(Ni,Al)₃(Si,Al)₂O₅(OH)₄
Silicate
Tetragonal
Mohs 2.5–3
Britvinite
Pb₁₄Mg₉(Si₁₀O₂₈)(BO₃)₄(CO₃)₂(OH)₁₂F₂
Silicate
Triclinic
Mohs 3
B
Brodtkorbite
Cu₂HgSe₂
Sulfide
Monoclinic
Mohs 2.5–3
B
Bubnovaite
K₂Na₈Ca(SO₄)₆
Sulfate
Hexagonal
Mohs 2–3
B
Buchwaldite
NaCa(PO₄)
Phosphate
Orthorhombic
Mohs 3
B
Bulgakite
Li₂(Ca,Na)Fe²⁺₇Ti₂(Si₄O₁₂)₂O₂(OH)₄(O,F)(H₂O)₂
Silicate
Triclinic
Mohs 3
B
Burgessite
Co₂(H₂O)₄[AsO₃(OH)]₂(H₂O)
Arsenate
Monoclinic
Mohs 3
Burtite
CaSn⁴⁺(OH)₆
Oxides & Hydroxide
Cubic
Mohs 3
Buttgenbachite
Cu₃₆(NO₃)₂Cl₈(OH)₆₂·nH₂O
Nitrate
Hexagonal
Mohs 3
B
Bykovaite
(Ba,Na,K)₂(Na,Ti,Mn)₄(Ti,Nb)₂O₂Si₄O₁₄(H₂O,F,OH)₂·3.5H₂O
Silicate
Monoclinic
Mohs 3
B
Bøgvadite
Na₂Ba₂SrAl₄F₂₀
Halide
Monoclinic
Mohs 3
Cahnite
Ca₂B(AsO₄)(OH)₄
Arsenate
Tetragonal
Mohs 3
C
Cairncrossite
Sr₂Ca₇₋ₓNa₂ₓ(Si₄O₁₀)₄(OH)₂(H₂O)₁₅₋ₓ
Silicate
Triclinic
Mohs 3
C
Calamaite
Na₂TiO(SO₄)₂·2H₂O
Sulfate
Orthorhombic
Mohs 3
Calaverite
AuTe₂
Sulfide
Monoclinic
Mohs 2.5–3
Calcioandyrobertsite
KCaCu₅(AsO₄)₄[As(OH)₂O₂]·2H₂O
Arsenate
Orthorhombic
Mohs 3
C
Calcioburbankite
Na₃(Ca,Ce,Sr,La)₃(CO₃)₅
Carbonate
Hexagonal
Mohs 3–4
Calciocopiapite
CaFe³⁺₄(SO₄)₆(OH)₂·20H₂O
Sulfate
Triclinic
Mohs 2–3
C
Calciolangbeinite
K₂Ca₂(SO₄)₃
Sulfate
Cubic
Mohs 3–3.5
C
Calciomurmanite
(Na, )₂Ca(Ti,Mg,Nb)₄[Si₂O₇]₂O₂(OH,O)₂(H₂O)₄
Silicate
Triclinic
Mohs 2.5–3
Calcurmolite
(Ca₁₋ₓNaₓ)₂(UO₂)₃(MoO₄)₂(OH)₆₋ₓ·nH₂O
Molybdate
Monoclinic
Mohs 2–3
C
Calderónite
Pb₂Fe³⁺(VO₄)₂(OH)
Vanadate
Monoclinic
Mohs 3–4
Caledonite
Cu₂Pb₅(SO₄)₃(CO₃)(OH)₆
Sulfate
Orthorhombic
Mohs 2.5–3
Callaghanite
Cu₂Mg₂(CO₃)(OH)₆·2H₂O
Carbonate
Monoclinic
Mohs 3–3.5
Carbocernaite
(Sr,Ce,La)(Ca,Na)(CO₃)₂
Carbonate
Orthorhombic
Mohs 3
C
Carducciite
(AgSb)Pb₆(As,Sb)₈S₂₀
Sulfosalt
Monoclinic
Mohs 2.5–3
C
Carlfrancisite
Mn²⁺₃(Mn²⁺,Mg,Fe³⁺,Al)₄₂(As³⁺O₃)₂(As⁵⁺O₄)₄[(Si,As⁵⁺)O₄]₆[(As⁵⁺,Si)O₄]₂(OH)₄₂
Silicate
Hexagonal
Mohs 3
C
Carlosruizite
K₃Na₂Na₃Mg₅(IO₃)₆(SeO₄)₆·6H₂O
Iodate
Hexagonal
Mohs 2–3
Caryopilite
Mn²⁺₃Si₂O₅(OH)₄
Silicate
Monoclinic
Mohs 3–3.5
C
Caseyite
[(V⁵⁺O₂)Al₇.₅(OH)₁₅(H₂O)₁₃]₂[H₂V⁴⁺V⁵⁺₉O₂₈][V⁵⁺₁₀O₂₈]₂·90H₂O
Oxides & Hydroxide
Monoclinic
Mohs 2–3
Celestine
Sr(SO₄)
Sulfate
Orthorhombic
Mohs 3–3.5
Cerussite
Pb(CO₃)
Carbonate
Orthorhombic
Mohs 3–3.5
Cesanite
Ca₂Na₃(SO₄)₃OH
Sulfate
Hexagonal
Mohs 2–3
Cesbronite
Cu₃Te⁶⁺O₄(OH)₄
Oxides & Hydroxide
Orthorhombic
Mohs 3
C
Cesiodymite
CsKCu₅O(SO₄)₅
Sulfate
Triclinic
Mohs 3
C
Chaidamuite
ZnFe³⁺(SO₄)₂(OH)·4H₂O
Sulfate
Triclinic
Mohs 2.5–3
Chalcocite
Cu₂S
Sulfide
Monoclinic
Mohs 2.5–3
Chalcostibite
CuSbS₂
Sulfosalt
Orthorhombic
Mohs 3–4
Challacolloite
KPb₂Cl₅
Halide
Monoclinic
Mohs 2–3
Chamosite
(Fe²⁺,Mg,Al,Fe³⁺)₆(Si,Al)₄O₁₀(OH,O)₈
Silicate
Triclinic
Mohs 2.5–3.5
Changoite
Na₂Zn(SO₄)₂·4H₂O
Sulfate
Monoclinic
Mohs 2–3
Charmarite
Mn₄Al₂(OH)₁₂(CO₃)·3H₂O
Carbonate
Hexagonal
Mohs 3
Chernykhite
BaV₂(Si₂Al₂)O₁₀(OH)₂
Silicate
Monoclinic
Mohs 2.5–3.6
Chervetite
Pb₂V⁵⁺₂O₇
Oxides & Hydroxide
Monoclinic
Mohs 3
Chiavennite
CaMn²⁺(BeOH)₂Si₅O₁₃·2H₂O
Silicate
Orthorhombic
Mohs 3
C
Chinleite-(Y)
NaY(SO₄)₂·H₂O
Sulfate
Hexagonal
Mohs 2.5–3
C
Chlorocalcite
KCaCl₃
Halide
Mohs 2.5–3
Choloalite
(Pb,Ca)₃(Cu,Sb)₃Te₆O₁₈Cl
Halide
Cubic
Mohs 3
C
Chovanite
Pb₁₅₋₂ₓSb₁₄₊₂ₓS₃₆Oₓ (x~0.2)
Oxides & Hydroxide
Monoclinic
Mohs 3
Chrysocolla
(Cu₂₋ₓAlₓ)H₂₋ₓSi₂O₅(OH)₄·nH₂O
Silicate
Amorphous
Mohs 2–4
C
Chrysothallite
K₆Cu₆Tl³⁺Cl₁₇(OH)₄·H₂O
Halide
Tetragonal
Mohs 3
Chrysotile
Mg₃Si₂O₅(OH)₄
Silicate
Monoclinic
Mohs 2.5–3.5
Chudobaite
Mg₅(AsO₄)₂(AsO₃OH)₂·10H₂O
Arsenate
Triclinic
Mohs 2.5–3
C
Chukhrovite-(Ce)
Ca₃CeAl₂(SO₄)F₁₃·12H₂O
Sulfate
Cubic
Mohs 3
Chukhrovite-(Y)
Ca₃YAl₂(SO₄)F₁₃·12H₂O
Sulfate
Cubic
Mohs 3
Churchite-(Y)
Y(PO₄)·2H₂O
Phosphate
Monoclinic
Mohs 3
Chursinite
Hg¹⁺Hg²⁺(AsO₄)
Arsenate
Monoclinic
Mohs 3
C
Ciriottiite
Cu₄Pb₁₉(Sb,As,Bi)₂₂(As₂)S₅₆
Sulfosalt
Monoclinic
Mohs 3–3.5
Clausthalite
PbSe
Sulfide
Cubic
Mohs 2.5–3
C
Clino-oscarkempffite
Ag₁₅Pb₆Sb₂₁Bi₁₈S₇₂
Sulfosalt
Monoclinic
Mohs 3–3.5
Clinoatacamite
Cu₂Cl(OH)₃
Halide
Monoclinic
Mohs 3
Clinobehoite
Be(OH)₂
Oxides & Hydroxide
Monoclinic
Mohs 2–3
Clinoclase
Cu₃(AsO₄)(OH)₃
Arsenate
Monoclinic
Mohs 2.5–3
Colusite
Cu₁₃VAs₃S₁₆
Sulfosalt
Cubic
Mohs 3–4
Connellite
Cu₃₆(SO₄)(OH)₆₂Cl₈·6H₂O
Sulfate
Hexagonal
Mohs 3
Cookeite
(Al,Li)₃Al₂(Si,Al)₄O₁₀(OH)₈
Silicate
Monoclinic
Mohs 2.5–3.5
Copiapite
Fe²⁺Fe³⁺₄(SO₄)₆(OH)₂·20H₂O
Sulfate
Triclinic
Mohs 2.5–3
Mineraloid
Coral
Aragonite skeleton
Carbonate
Orthorhombic
Mohs 3–4
Corderoite
Hg₃S₂Cl₂
Sulfide
Cubic
Mohs 3
Corvusite
(Na,Ca,K)₁₋ₓ(V⁵⁺,V⁴⁺,Fe²⁺)₈O₂₀·4H₂O
Oxides & Hydroxide
Monoclinic
Mohs 2.5–3
Cosalite
Pb₂Bi₂S₅
Sulfosalt
Orthorhombic
Mohs 2.5–3
Crawfordite
Na₃Sr(PO₄)(CO₃)
Phosphate
Monoclinic
Mohs 3
Criddleite
Ag₂Au₃TlSb₁₀S₁₀
Sulfosalt
Monoclinic
Mohs 3–3.5
Crocoite
Pb(CrO₄)
Chromate
Monoclinic
Mohs 2.5–3
Crookesite
Cu₇TlSe₄
Sulfide
Tetragonal
Mohs 2.5–3
C
Crowningshieldite
(Ni₀.₉Fe₀.₁)S
Sulfide
Hexagonal
Mohs 3–3.5
Cryolite
Na₂NaAlF₆
Halide
Monoclinic
Mohs 2.5–3
Cryolithionite
Na₃Al₂(LiF₄)₃
Halide
Cubic
Mohs 2.5–3
C
Cryptochalcite
K₂Cu₅O(SO₄)₅
Sulfate
Triclinic
Mohs 3
C
Cuboargyrite
AgSbS₂
Sulfosalt
Cubic
Mohs 3
C
Cupromolybdite
Cu²⁺₃O(Mo⁶⁺O₄)₂
Oxides & Hydroxide
Orthorhombic
Mohs 3
C
Cuproneyite
Cu₇Pb₂₇Bi₂₅S₆₈
Sulfosalt
Monoclinic
Mohs 3
Cupropolybasite
[Cu₆Sb₂S₇][Ag₉CuS₄]
Sulfosalt
Hexagonal
Mohs 3–3.5
Cuzticite
Fe³⁺₂Te⁶⁺O₆·3H₂O
Oxides & Hydroxide
Hexagonal
Mohs 3
Cymrite
Ba(Si,Al)₄(O,OH)₈·H₂O
Silicate
Monoclinic
Mohs 2–3
D
D'ansite
Na₂₁Mg(SO₄)₁₀Cl₃
Sulfate
Cubic
Mohs 2.5–3
Dalnegroite
Tl₄Pb₂(As,Sb)₂₀S₃₄
Sulfosalt
Triclinic
Mohs 3–3.5
Damaraite
Pb₃O₂(OH)Cl
Halide
Orthorhombic
Mohs 3
D
Davidlloydite
Zn₃(AsO₄)₂·4H₂O
Arsenate
Triclinic
Mohs 3–4
Davreuxite
Mn²⁺Al₆Si₄O₁₇(OH)₂
Silicate
Monoclinic
Mohs 2–3
Dawsonite
NaAl(CO₃)(OH)₂
Carbonate
Orthorhombic
Mohs 3
Demesmaekerite
Pb₂Cu₅(UO₂)₂(Se⁴⁺O₃)₆(OH)₆·2H₂O
Oxides & Hydroxide
Triclinic
Mohs 3–4
Destinezite
Fe³⁺₂(PO₄)(SO₄)(OH)·6H₂O
Phosphate
Triclinic
Mohs 3–4
Diadochite
Fe³⁺₂(PO₄)(SO₄)(OH)·6H₂O
Phosphate
Mohs 3–4
Diaphorite
Ag₃Pb₂Sb₃S₈
Sulfosalt
Monoclinic
Mohs 2.5–3
Digenite
Cu₁.₈S
Sulfide
Cubic
Mohs 2.5–3
Dixenite
Cu¹⁺Fe³⁺Mn²⁺₁₄(As⁵⁺O₄)(As³⁺O₃)₅(SiO₄)₂(OH)₆
Silicate
Hexagonal
Mohs 3–4
Djurleite
Cu₃₁S₁₆
Sulfide
Monoclinic
Mohs 2.5–3
D
Dmisokolovite
K₃Cu₅AlO₂(AsO₄)₄
Arsenate
Monoclinic
Mohs 3
D
Dobšináite
Ca₂Ca(AsO₄)₂·2H₂O
Arsenate
Monoclinic
Mohs 3
D
Dolerophanite
Cu₂O(SO₄)
Sulfate
Monoclinic
Mohs 3
D
Domerockite
Cu₄(AsO₄)(AsO₃OH)(OH)₃·H₂O
Arsenate
Triclinic
Mohs 3
Domeykite
Cu₃As
Sulfide
Cubic
Mohs 3–3.5
Donnayite-(Y)
NaSr₃CaY(CO₃)₆·3H₂O
Carbonate
Triclinic
Mohs 3
D
Donowensite
Ca(H₂O)₃Fe³⁺₂(V₂O₇)₂
Vanadate
Triclinic
Mohs 3
D
Dovyrenite
Ca₆Zr(Si₂O₇)₂(OH)₄
Silicate
Orthorhombic
Mohs 3–4
Doyleite
Al(OH)₃
Oxides & Hydroxide
Triclinic
Mohs 2.5–3
Dresserite
Ba₂Al₄(CO₃)₄(OH)₈·3H₂O
Carbonate
Orthorhombic
Mohs 2.5–3
D
Dreyerite
Bi(VO₄)
Vanadate
Tetragonal
Mohs 2–3
Dufrénoysite
Pb₂As₂S₅
Sulfosalt
Monoclinic
Mohs 3
Dugganite
Pb₃Zn₃(TeO₆)(AsO₄)₂
Arsenate
Hexagonal
Mohs 3
D
Dukeite
Bi³⁺₂₄Cr⁶⁺₈O₅₇(OH)₆·3H₂O
Oxides & Hydroxide
Hexagonal
Mohs 3–4
D
Dymkovite
Ni(UO₂)₂(As³⁺O₃)₂·7H₂O
Oxides & Hydroxide
Monoclinic
Mohs 3
Earlshannonite
Mn²⁺Fe³⁺₂(PO₄)₂(OH)₂·4H₂O
Phosphate
Monoclinic
Mohs 3–4
Ecdemite
Pb₆As³⁺₂O₇Cl₄
Halide
Tetragonal
Mohs 2.5–3
E
Eckerite
Ag₂CuAsS₃
Sulfosalt
Monoclinic
Mohs 2.5–3
E
Eckhardite
(Ca,Pb)Cu²⁺Te⁶⁺O₅(H₂O)
Oxides & Hydroxide
Monoclinic
Mohs 2–3
Edenharterite
TlPbAs₃S₆
Sulfosalt
Orthorhombic
Mohs 2.5–3
E
Edwardsite
Cu₃Cd₂(SO₄)₂(OH)₆·4H₂O
Sulfate
Monoclinic
Mohs 3–3.5
Eggletonite
(Na,K,Ca)ₓMn₆(Si,Al)₁₀O₂₄(OH)₄·nH₂O (x = 1-2; n = 7-11)
Silicate
Monoclinic
Mohs 3–4
E
Ekatite
(Fe³⁺,Fe²⁺,Zn)₁₂(AsO₃)₆(AsO₃,SiO₃OH)₂(OH)₆
Silicate
Hexagonal
Mohs 3
E
Eleomelanite
(K₂Pb)Cu₄O₂(SO₄)₄
Sulfate
Monoclinic
Mohs 3
Emmerichite
Ba₂Ti₂Na₃Fe³⁺(Si₂O₇)₂O₂F₂
Silicate
Monoclinic
Mohs 3–4
Enargite
Cu₃AsS₄
Sulfosalt
Orthorhombic
Mohs 3
Englishite
K₃Na₂Ca₁₀Al₁₅(OH)₇(PO₄)₂₁·26H₂O
Phosphate
Monoclinic
Mohs 3
Enneasartorite
Tl₆Pb₃₂As₇₀S₁₄₀
Sulfosalt
Monoclinic
Mohs 3–3.5
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