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Mohs 3 minerals

The reference mineral for 3 is calcite.

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

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