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Monoclinic
minerals
One oblique angle between axes.
← All properties
1,952
minerals · Monoclinic minerals
Azurite
Cu₃(CO₃)₂(OH)₂
Carbonate
Monoclinic
Mohs 3.5–4
Group
Biotite
K(Mg,Fe)₃(AlSi₃O₁₀)(OH)₂
Silicate
Monoclinic
Mohs 2.5–3
Gypsum
Ca(SO₄)·2H₂O
Sulfate
Monoclinic
Mohs 2
Jade
Jadeite or nephrite
Silicate
Monoclinic
Mohs 6–7
Jadeite
NaAlSi₂O₆
Silicate
Monoclinic
Mohs 6–7
Group
Lepidolite
K(Li,Al)₃(Si,Al)₄O₁₀(F,OH)₂
Silicate
Monoclinic
Mohs 2.5–3
Malachite
Cu₂(CO₃)(OH)₂
Carbonate
Monoclinic
Mohs 3.5–4
Variety
Moonstone
KAlSi₃O₈
Silicate
Monoclinic
Mohs 6–6.5
Muscovite
KAl₂(Si₃Al)O₁₀(OH)₂
Silicate
Monoclinic
Mohs 2–2.5
Variety
Selenite
CaSO₄·2H₂O
Sulfate
Monoclinic
Mohs 2
Spodumene
LiAlSi₂O₆
Silicate
Monoclinic
Mohs 6.5–7
Acanthite
Ag₂S
Sulfide
Monoclinic
Mohs 2–2.5
A
Achalaite
Fe²⁺TiNb₂O₈
Oxides & Hydroxide
Monoclinic
Mohs 5.5
Actinolite
Ca₂(Mg₄.₅₋₂.₅Fe²⁺₀.₅₋₂.₅)Si₈O₂₂(OH)₂
Silicate
Monoclinic
Mohs 5–6
A
Acuminite
SrAlF₄(OH)·H₂O
Halide
Monoclinic
Mohs 3.5
A
Adanite
Pb₂(Te⁴⁺O₃)(SO₄)
Sulfate
Monoclinic
Mohs 2.5
Admontite
MgB₆O₁₀·7H₂O
Borate
Monoclinic
Mohs 2–3
A
Adolfpateraite
K(UO₂)(SO₄)(OH)(H₂O)
Sulfate
Monoclinic
Mohs 2
Aegirine
NaFe³⁺Si₂O₆
Silicate
Monoclinic
Mohs 6–6.5
Aegirine-augite
(Ca,Na)(Fe³⁺,Mg,Fe²⁺)Si₂O₆
Silicate
Monoclinic
Afwillite
Ca₃[SiO₄][SiO₂(OH)₂]·2H₂O
Silicate
Monoclinic
Mohs 3–4
Agricolaite
K₄(UO₂)(CO₃)₃
Carbonate
Monoclinic
Mohs 4
Aguilarite
Ag₄SeS
Sulfide
Monoclinic
Mohs 2.5
Ahlfeldite
Ni(SeO₃)·2H₂O
Oxides & Hydroxide
Monoclinic
Mohs 2–2.5
A
Airdite
Sr(V⁴⁺O)₂(PO₄)₂·4H₂O
Phosphate
Monoclinic
Akaganeite
(Fe³⁺,Ni²⁺)₈(OH,O)₁₆Cl₁.₂₅·nH₂O
Halide
Monoclinic
A
Akaogiite
TiO₂
Oxides & Hydroxide
Monoclinic
A
Aklimaite
Ca₄[Si₂O₅(OH)₂](OH)₄·5H₂O
Silicate
Monoclinic
Mohs 3–4
A
Akopovaite
Al₄Li₂(OH)₁₂(CO₃)(H₂O)₃
Carbonate
Monoclinic
Mohs 1
Akrochordite
Mn²⁺₅(AsO₄)₂(OH)₄·4H₂O
Arsenate
Monoclinic
Mohs 3.5
A
Alacránite
As₈S₉
Sulfide
Monoclinic
Mohs 1.5
Alamosite
PbSiO₃
Silicate
Monoclinic
Mohs 4.5
A
Albertiniite
Fe²⁺(SO₃)·3H₂O
Sulfate
Monoclinic
A
Alcaparrosaite
K₃Ti⁴⁺Fe³⁺(SO₄)₄O(H₂O)₂
Sulfate
Monoclinic
Mohs 4
Aldomarinoite
Sr₂Mn³⁺(AsO₄)₂(OH)
Arsenate
Monoclinic
Aldridgeite
(Cd,Ca)(Cu,Zn)₄(SO₄)₂(OH)₆·3H₂O
Sulfate
Monoclinic
Mohs 3
A
Aleksandrovite
KCa₇Sn₂Li₃Si₁₂O₃₆F₂
Silicate
Monoclinic
Mohs 4–4.5
A
Aleutite
[Cu₅O₂](AsO₄)(VO₄)·(Cu₀.₅ ₀.₅)Cl
Arsenate
Monoclinic
A
Alexkuznetsovite-(Ce)
Ce₂Mn(CO₃)(Si₂O₇)
Silicate
Monoclinic
Mohs 5
A
Alexkuznetsovite-(La)
La₂Mn(CO₃)(Si₂O₇)
Silicate
Monoclinic
Mohs 5
A
Alflarsenite
NaCa₂Be₃Si₄O₁₃(OH)·2H₂O
Silicate
Monoclinic
Mohs 4
Allactite
Mn²⁺₇(AsO₄)₂(OH)₈
Arsenate
Monoclinic
Mohs 4.5
Group
Allanite
(Ca,Ce)₂(Al,Fe)₃Si₃O₁₂(OH)
Silicate
Monoclinic
Mohs 5.5–6
Allanite-(Ce)
CaCe(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)
Silicate
Monoclinic
Mohs 5.5–6
A
Allanite-(La)
CaLa(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)
Silicate
Monoclinic
Mohs 6
Allanite-(Nd)
CaNd(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)
Silicate
Monoclinic
Mohs 6
Allanite-(Y)
CaY(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)
Silicate
Monoclinic
Allanpringite
Fe³⁺₃(PO₄)₂(OH)₃·5H₂O
Phosphate
Monoclinic
Mohs 3
Alleghanyite
Mn²⁺₅(SiO₄)₂(OH)₂
Silicate
Monoclinic
Mohs 5.5
A
Allochalcoselite
Cu¹⁺Cu²⁺₅PbO₂(SeO₃)₂Cl₅
Halide
Monoclinic
Mohs 3–4
Alloclasite
CoAsS
Sulfosalt
Monoclinic
Mohs 5
Alluaudite
NaMnFe³⁺₂(PO₄)₃
Phosphate
Monoclinic
Mohs 5–5.5
A
Alnaperbøeite-(Ce)
(CaCe₂.₅Na₀.₅)(Al₄)(Si₂O₇)(SiO₄)₃O(OH)₂
Silicate
Monoclinic
Mohs 6–7
Alpersite
Mg(SO₄)·7H₂O
Sulfate
Monoclinic
Mohs 2.5
A
Alsakharovite-Zn
NaSrKZn(Ti,Nb)₄(Si₄O₁₂)₂(O,OH)₄·7H₂O
Silicate
Monoclinic
Mohs 5
Alterite
Zn₂Fe³⁺₄(SO₄)₄(C₂O₄)₂(OH)₄·17H₂O
Organic Mineral
Monoclinic
A
Altisite
Na₃K₆Ti₂Al₂Si₈O₂₆Cl₃
Silicate
Monoclinic
Aluminite
Al₂(SO₄)(OH)₄·7H₂O
Sulfate
Monoclinic
Mohs 1–2
Aluminoceladonite
K(Mg,Fe²⁺)Al(Si₄O₁₀)(OH)₂
Silicate
Monoclinic
A
Aluminomagnesiohulsite
Mg₂AlO₂(BO₃)
Borate
Monoclinic
A
Alumoklyuchevskite
K₃Cu²⁺₃AlO₂(SO₄)₄
Sulfate
Monoclinic
Mohs 2.3
Alvanite
Zn²⁺Al₄(V⁵⁺O₃)₂(OH)₁₂·2H₂O
Oxides & Hydroxide
Monoclinic
Mohs 3–3.5
A
Amamoorite
CaMn²⁺₂Mn³⁺(Si₂O₇)O(OH)
Silicate
Monoclinic
Mohs 6
A
Amarillite
NaFe³⁺(SO₄)₂·6H₂O
Sulfate
Monoclinic
Mohs 2.5–3
Ameghinite
NaB₃O₃(OH)₄
Oxides & Hydroxide
Monoclinic
Mohs 2.5
Amicite
K₂Na₂(Al₄Si₄O₁₆)·5H₂O
Silicate
Monoclinic
Mohs 4.5
A
Ammonioborite
(NH₄)₃B₁₅O₂₀(OH)₈·4H₂O
Oxides & Hydroxide
Monoclinic
A
Ammoniolasalite
[(NH₄)₂Mg₂(H₂O)₂₀]·[V₁₀O₂₈]
Oxides & Hydroxide
Monoclinic
Mohs 1
A
Ammoniotinsleyite
(NH₄)Al₂(PO₄)₂(OH)·2H₂O
Phosphate
Monoclinic
Mohs 4
Group
Amphibole
A₀₋₁B₂C₅T₈O₂₂(OH)₂
Silicate
Monoclinic
Mohs 5–6.5
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
A
Andorite IV
AgPbSb₃S₆
Sulfosalt
Monoclinic
A
Andreadiniite
CuHgAg₇Pb₇Sb₂₄S₄₈
Sulfosalt
Monoclinic
Mohs 3.5
Andrémeyerite
BaFe²⁺₂(Si₂O₇)
Silicate
Monoclinic
Mohs 5.5
Andyrobertsite
KCdCu₅(AsO₄)₄[As(OH)₂O₂]·2H₂O
Arsenate
Monoclinic
Mohs 3
Ankinovichite
NiAl₄(V⁵⁺O₃)₂(OH)₁₂·2H₂O
Oxides & Hydroxide
Monoclinic
Mohs 2.5–3
Annabergite
Ni₃(AsO₄)₂·8H₂O
Arsenate
Monoclinic
Mohs 1.5–2.5
Annite
KFe²⁺₃(AlSi₃O₁₀)(OH)₂
Silicate
Monoclinic
Mohs 2.5–3
Ansermetite
Mn²⁺V⁵⁺₂O₆·4H₂O
Oxides & Hydroxide
Monoclinic
Antigorite
Mg₃Si₂O₅(OH)₄
Silicate
Monoclinic
Mohs 2.5–3.5
Antofagastaite
Na₂Ca(SO₄)₂·1.5H₂O
Sulfate
Monoclinic
Mohs 3
A
Anzaite-(Ce)
Ce₄Fe²⁺Ti₆O₁₈(OH)₂
Oxides & Hydroxide
Monoclinic
A
Apachite
Cu²⁺₉Si₁₀O₂₉·11H₂O
Silicate
Monoclinic
Mohs 2
Apjohnite
Mn²⁺Al₂(SO₄)₄·22H₂O
Sulfate
Monoclinic
Mohs 1.5
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
A
Arangasite
Al₂(SO₄)(PO₄)F·9H₂O
Phosphate
Monoclinic
Mohs 1–2
Ardaite
Pb₁₇Sb₁₅S₃₅Cl₉
Sulfosalt
Monoclinic
A
Ardealite
Ca₂(PO₃OH)(SO₄)·4H₂O
Phosphate
Monoclinic
Arfvedsonite
NaNa₂(Fe²⁺₄Fe³⁺)Si₈O₂₂(OH)₂
Silicate
Monoclinic
Mohs 5–6
A
Argandite
Mn₇(VO₄)₂(OH)₈
Vanadate
Monoclinic
Mohs 3.5–4
Argentobaumhauerite
Ag₁.₅Pb₂₂As₃₃.₅S₇₂
Sulfosalt
Monoclinic
Argentopyrite
AgFe₂S₃
Sulfide
Monoclinic
Mohs 3.5–4
Aristarainite
Na₂Mg[B₆O₈(OH)₄]₂·4H₂O
Borate
Monoclinic
Mohs 3.5
A
Armbrusterite
Na₆K₅Mn³⁺Mn²⁺₁₄(Si₉O₂₂)₄(OH)₁₀·4H₂O
Silicate
Monoclinic
Armstrongite
CaZr(Si₆O₁₅)·2H₂O
Silicate
Monoclinic
Mohs 4.6
A
Arrojadite-(BaNa)
BaNa₃(NaCa)Fe²⁺₁₃Al(PO₄)₁₁(PO₃OH)(OH)₂
Phosphate
Monoclinic
Mohs 4–5
A
Arrojadite-(KFe)
(KNa)Fe²⁺(CaNa₂)Fe²⁺₁₃Al(PO₄)₁₁(PO₃OH)(OH)₂
Phosphate
Monoclinic
Mohs 5
A
Arrojadite-(KNa)
KNa₃(CaNa₂)Fe²⁺₁₃Al(PO₄)₁₁(PO₃OH)(OH)₂
Phosphate
Monoclinic
Mohs 5
A
Arrojadite-(PbFe)
PbFe²⁺(CaNa₂)Fe²⁺₁₃Al(PO₄)₁₁(PO₃OH)(OH)₂
Phosphate
Monoclinic
Mohs 3.5–4
A
Arrojadite-(SrFe)
SrFe²⁺(CaNa₂)Fe²⁺₁₃Al(PO₄)₁₁(PO₃OH)(OH)₂
Phosphate
Monoclinic
Mohs 3.5–4
A
Arsenatrotitanite
NaTi(AsO₄)O
Arsenate
Monoclinic
Mohs 5.5
A
Arsenbrackebuschite
Pb₂(Fe³⁺,Zn)(AsO₄)₂(OH,H₂O)
Arsenate
Monoclinic
Mohs 4–5
Arseniopleite
NaCaMnMn₂(AsO₄)₃
Arsenate
Monoclinic
Mohs 3–4
Arseniosiderite
Ca₂Fe³⁺₃O₂(AsO₄)₃·3H₂O
Arsenate
Monoclinic
Mohs 4.5
Arsenmedaite
Mn²⁺₆As⁵⁺Si₅O₁₈(OH)
Silicate
Monoclinic
Arsenopyrite
FeAsS
Sulfosalt
Monoclinic
Mohs 5.5–6
A
Arsenoveszelyite
Cu₂Zn(AsO₄)(OH)₃·2H₂O
Arsenate
Monoclinic
A
Arsenowagnerite
Mg₂(AsO₄)F
Arsenate
Monoclinic
Mohs 5
A
Arsenquatrandorite
Ag₁₇.₆Pb₁₂.₈Sb₃₈.₁As₁₁.₅S₉₆
Sulfosalt
Monoclinic
Arsentsumebite
Pb₂Cu(AsO₄)(SO₄)(OH)
Arsenate
Monoclinic
Mohs 3.5
A
Arsmirandite
Na₁₈Cu₁₂Fe³⁺O₈(AsO₄)₈Cl₅
Arsenate
Monoclinic
Arthurite
CuFe³⁺₂(AsO₄)₂(OH)₂·4H₂O
Arsenate
Monoclinic
Mohs 3.5
Artinite
Mg₂(CO₃)(OH)₂·3H₂O
Carbonate
Monoclinic
Mohs 2.5
A
Artsmithite
Hg¹⁺₄Al(PO₄)₁.₇₄(OH)₁.₇₈
Phosphate
Monoclinic
Arupite
Ni₃(PO₄)₂·8H₂O
Phosphate
Monoclinic
Aschamalmite
Pb₆₋₃ₓBi₂₊ₓS₉
Sulfosalt
Monoclinic
Atelestite
Bi₂O(AsO₄)(OH)
Arsenate
Monoclinic
Mohs 4.5–5
A
Attakolite
CaMn²⁺Al₄(HSiO₄)(PO₄)₃(OH)₄
Silicate
Monoclinic
Mohs 5
Augelite
Al₂(PO₄)(OH)₃
Phosphate
Monoclinic
Mohs 4.5–5
Augite
(Ca,Mg,Fe)₂Si₂O₆
Silicate
Monoclinic
Mohs 5.5–6
Aurichalcite
(Zn,Cu)₅(CO₃)₂(OH)₆
Carbonate
Monoclinic
Mohs 1–2
A
Aurivilliusite
Hg¹⁺Hg²⁺OI
Halide
Monoclinic
Avdoninite
K₂Cu₅Cl₈(OH)₄·2H₂O
Halide
Monoclinic
Mohs 3
Babánekite
Cu₃(AsO₄)₂·8H₂O
Arsenate
Monoclinic
B
Badalovite
NaNaMg(MgFe³⁺)(AsO₄)₃
Arsenate
Monoclinic
Mohs 3.5
Baddeleyite
ZrO₂
Oxides & Hydroxide
Monoclinic
Mohs 6.5
Bafertisite
Ba₂Fe²⁺₄Ti₂(Si₂O₇)₂O₂(OH)₂F₂
Silicate
Monoclinic
Mohs 5
Baghdadite
Ca₆Zr₂(Si₂O₇)₂O₄
Silicate
Monoclinic
Mohs 6
Bahianite
Al₅Sb⁵⁺₃O₁₄(OH)₂
Oxides & Hydroxide
Monoclinic
Mohs 9
B
Baileychlore
(Zn,Fe²⁺,Al,Mg)₆(Si,Al)₄O₁₀(OH)₈
Silicate
Monoclinic
Mohs 5
B
Bairdite
Pb₂Cu²⁺₄Te⁶⁺₂O₁₀(OH)₂(SO₄)·H₂O
Sulfate
Monoclinic
Mohs 2–3
Bakhchisaraitsevite
Na₂Mg₅(PO₄)₄·7H₂O
Phosphate
Monoclinic
Mohs 2–2.5
Balangeroite
Mg₂₁Si₈O₂₇(OH)₂₀
Silicate
Monoclinic
B
Balestraite
KLi₂V⁵⁺Si₄O₁₂
Silicate
Monoclinic
Mohs 2.5–3
Bannermanite
(Na,K)ₓV⁴⁺ₓV⁵⁺₆₋ₓO₁₅ (0.5<x<0.9)
Oxides & Hydroxide
Monoclinic
Bannisterite
(Ca,K,Na)(Mn²⁺,Fe²⁺)₁₀(Si,Al)₁₆O₃₈(OH)₈·nH₂O
Silicate
Monoclinic
Mohs 4
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
Baratovite
KLi₃Ca₇Ti₂(SiO₃)₁₂F₂
Silicate
Monoclinic
Mohs 3.5–4
Barbosalite
Fe²⁺Fe³⁺₂(PO₄)₂(OH)₂
Phosphate
Monoclinic
Mohs 6
Bariandite
Al₀.₆(V⁵⁺,V⁴⁺)₈O₂₀·9H₂O
Oxides & Hydroxide
Monoclinic
B
Barikaite
Ag₃Pb₁₀(Sb₈As₁₁)Σ₁₉S₄₀
Sulfosalt
Monoclinic
Mohs 3
B
Bariosincosite
Ba(VO)₂(PO₄)₂·4H₂O
Phosphate
Monoclinic
Mohs 3
B
Barićite
(Mg,Fe)₃(PO₄)₂·8H₂O
Phosphate
Monoclinic
Barnesite
Na₂V⁵⁺₆O₁₆·3H₂O
Oxides & Hydroxide
Monoclinic
Mohs 3
B
Barroisite
(NaCa)(Mg₃Al₂)(Si₇Al)O₂₂(OH)₂
Silicate
Monoclinic
Mohs 5–6
B
Barrydawsonite-(Y)
Na₁.₅Y₀.₅CaSi₃O₉H
Silicate
Monoclinic
Barstowite
Pb₄(CO₃)Cl₆·H₂O
Carbonate
Monoclinic
Mohs 3
B
Bartelkeite
PbFe²⁺Ge(Ge₂O₇)(OH)₂·H₂O
Oxides & Hydroxide
Monoclinic
Mohs 4
Barytocalcite
BaCa(CO₃)₂
Carbonate
Monoclinic
Mohs 3.5–4
B
Barytolamprophyllite
(BaK)Ti₂Na₃Ti(Si₂O₇)₂O₂(OH)₂
Silicate
Monoclinic
Mohs 2–3
Bassanite
Ca(SO₄)·0.5H₂O
Sulfate
Monoclinic
Bassetite
Fe²⁺(UO₂)₂(PO₄)₂(H₂O)₁₀
Phosphate
Monoclinic
Mohs 2.5
B
Bassoite
SrV⁴⁺₃O₇·4H₂O
Oxides & Hydroxide
Monoclinic
Mohs 4–4.5
B
Batagayite
CaZn₂(Zn,Cu)₆(PO₄)₄[PO₃(OH)]₃·12H₂O
Phosphate
Monoclinic
Mohs 3
B
Baumoite
Ba₀.₅[(UO₂)₃O₈Mo₂(OH)₃](H₂O)₃
Oxides & Hydroxide
Monoclinic
Mohs 2.5
B
Bayerite
Al(OH)₃
Oxides & Hydroxide
Monoclinic
Bayldonite
Cu₃PbO(AsO₃OH)₂(OH)₂
Arsenate
Monoclinic
Mohs 4.5
Bayleyite
Mg₂(UO₂)(CO₃)₃·18H₂O
Carbonate
Monoclinic
Mohs 2–2.5
B
Baylissite
K₂Mg(CO₃)₂·4H₂O
Carbonate
Monoclinic
Mohs 2–3
Bazhenovite
Ca₈S₅(S₂O₃)(OH)₁₂·20H₂O
Sulfate
Monoclinic
Mohs 2
Bearsite
Be₂(AsO₄)(OH)·4H₂O
Arsenate
Monoclinic
B
Bearthite
Ca₂Al(PO₄)₂(OH)
Phosphate
Monoclinic
Mohs 5
B
Beershevaite
CaFe³⁺₃(PO₄)₃O
Phosphate
Monoclinic
B
Belloite
Cu(OH)Cl
Halide
Monoclinic
B
Belousovite
KZn(SO₄)Cl
Sulfate
Monoclinic
Bementite
Mn₇Si₆O₁₅(OH)₈
Silicate
Monoclinic
Mohs 4.5–6
Benavidesite
Pb₄MnSb₆S₁₄
Sulfosalt
Monoclinic
Bendadaite
Fe²⁺Fe³⁺₂(AsO₄)₂(OH)₂·4H₂O
Arsenate
Monoclinic
Mohs 3
B
Benjaminite
Ag₃Bi₇S₁₂
Sulfosalt
Monoclinic
Mohs 3.3–3.5
Beraunite
Fe³⁺₆(PO₄)₄O(OH)₄·6H₂O
Phosphate
Monoclinic
Mohs 3–4
Berdesinskiite
V³⁺₂TiO₅
Oxides & Hydroxide
Monoclinic
Mohs 6–6.5
Bergenite
Ca₂Ba₄(UO₂)₉O₆(PO₄)₆·16H₂O
Phosphate
Monoclinic
Mohs 2.5
Bergslagite
CaBe(AsO₄)(OH)
Arsenate
Monoclinic
Mohs 5
Bermanite
Mn²⁺Mn³⁺₂(PO₄)₂(OH)₂·4H₂O
Phosphate
Monoclinic
Mohs 3.5
Bernardevansite
Al₂(Se⁴⁺O₃)₃·6H₂O
Oxides & Hydroxide
Monoclinic
B
Bernardite
TlAs₅S₈
Sulfosalt
Monoclinic
Mohs 2
Berryite
Cu₃Ag₂Pb₃Bi₇S₁₆
Sulfosalt
Monoclinic
Beryllonite
NaBe(PO₄)
Phosphate
Monoclinic
Mohs 5.5–6
B
Beshtauite
(NH₄)₂(UO₂)(SO₄)₂·2H₂O
Sulfate
Monoclinic
Mohs 2
Betpakdalite-CaCa
[Ca₂(H₂O)₁₇Ca(H₂O)₆][Mo⁶⁺₈As⁵⁺₂Fe³⁺₃O₃₆(OH)]
Oxides & Hydroxide
Monoclinic
Mohs 3
B
Betpakdalite-CaMg
[Ca₂(H₂O)₁₇Mg(H₂O)₆][Mo⁶⁺₈As⁵⁺₂Fe³⁺₃O₃₆(OH)]
Oxides & Hydroxide
Monoclinic
Mohs 3.5
B
Betpakdalite-FeFe
[Fe³⁺₂(H₂O)₁₅(OH)₂Fe³⁺(H₂O)₆][Mo₈As₂Fe³⁺₃O₃₇]
Oxides & Hydroxide
Monoclinic
Betpakdalite-NaCa
[Na₂(H₂O)₁₇Ca(H₂O)₆][Mo⁶⁺₈As⁵⁺₂Fe³⁺₃O₃₄(OH)₃]
Oxides & Hydroxide
Monoclinic
B
Betpakdalite-NaNa
[Na₂(H₂O)₁₆Na(H₂O)₆][Mo⁶⁺₈As⁵⁺₂Fe³⁺₃O₃₃(OH)₄]
Oxides & Hydroxide
Monoclinic
Mohs 3
B
Bettertonite
Al₆(AsO₄)₃(OH)₉(H₂O)₅·11H₂O
Arsenate
Monoclinic
Beusite
Mn²⁺Mn²⁺₂(PO₄)₂
Phosphate
Monoclinic
Mohs 5
B
Beusite-(Ca)
CaMn²⁺₂(PO₄)₂
Phosphate
Monoclinic
Mohs 5
Biagioniite
Tl₂SbS₂
Sulfosalt
Monoclinic
Mohs 3
B
Bianchite
Zn(SO₄)·6H₂O
Sulfate
Monoclinic
Mohs 2.5
Bieberite
Co(SO₄)·7H₂O
Sulfate
Monoclinic
Mohs 2
Biehlite
Sb³⁺₂MoO₆
Molybdate
Monoclinic
B
Bijvoetite-(Y)
Y₈(UO₂)₁₆O₈(CO₃)₁₆(OH)₈·39H₂O
Carbonate
Monoclinic
Mohs 2
B
Billwiseite
Sb³⁺₅Nb₃WO₁₈
Tungstate
Monoclinic
Mohs 5
Bimbowrieite
NaMgFe³⁺₅(PO₄)₄(OH)₆·2H₂O
Phosphate
Monoclinic
B
Biraite-(Ce)
Ce₂Fe²⁺(Si₂O₇)(CO₃)
Silicate
Monoclinic
Mohs 5
B
Biraite-(La)
La₂Fe²⁺(CO₃)(Si₂O₇)
Silicate
Monoclinic
Mohs 5
Biringuccite
Na₂B₅O₈(OH)·H₂O
Borate
Monoclinic
Bischofite
MgCl₂·6H₂O
Halide
Monoclinic
Mohs 1–2
Bismite
Bi₂O₃
Oxides & Hydroxide
Monoclinic
Mohs 4.5
Bismutoferrite
Fe³⁺₂Bi(SiO₄)₂(OH)
Silicate
Monoclinic
B
Bityite
CaLiAl₂(Si₂BeAl)O₁₀(OH)₂
Silicate
Monoclinic
Mohs 4–4.5
Bjarebyite
BaMn²⁺₂Al₂(PO₄)₃(OH)₃
Phosphate
Monoclinic
Mohs 4
B
Bleasdaleite
Ca₂Cu₅(Bi,Cu)(PO₄)₄(H₂O,OH,Cl)₁₃
Phosphate
Monoclinic
Mohs 2
Bluelizardite
Na₇(UO₂)(SO₄)₄Cl(H₂O)₂
Sulfate
Monoclinic
Mohs 2
B
Bluestreakite
K₄Mg₂(V⁴⁺₂V⁵⁺₈O₂₈)·14H₂O
Oxides & Hydroxide
Monoclinic
Mohs 2
Blödite
Na₂Mg(SO₄)₂·4H₂O
Sulfate
Monoclinic
Mohs 2.5–3
Bobfergusonite
Na₂Mn²⁺₅Fe³⁺Al(PO₄)₆
Phosphate
Monoclinic
Mohs 4
Bobierrite
Mg₃(PO₄)₂·8H₂O
Phosphate
Monoclinic
Mohs 2–2.5
B
Bobjonesite
V⁴⁺O(SO₄)·3H₂O
Vanadate
Monoclinic
Mohs 1
Bobkingite
Cu₅Cl₂(OH)₈·2H₂O
Halide
Monoclinic
Mohs 3
B
Bodieite
Bi³⁺₂(Te⁴⁺O₃)₂(SO₄)
Sulfate
Monoclinic
Mohs 2
Bokite
(Al,Fe)₁.₃(V⁵⁺,V⁴⁺,Fe³⁺)₈O₂₀·7.5H₂O
Oxides & Hydroxide
Monoclinic
Mohs 3
Boltwoodite
(K,Na)(UO₂)(SiO₃OH)·1.5H₂O
Silicate
Monoclinic
Mohs 3.5–4
Bonacinaite
Sc(AsO₄)·2H₂O
Arsenate
Monoclinic
Bonattite
Cu(SO₄)·3H₂O
Sulfate
Monoclinic
Bonazziite
As₄S₄
Sulfide
Monoclinic
Mohs 2.5
B
Bonshtedtite
Na₃Fe²⁺(PO₄)(CO₃)
Phosphate
Monoclinic
Mohs 4
Boothite
Cu(SO₄)·7H₂O
Sulfate
Monoclinic
Mohs 2–2.5
B
Boralsilite
Al₁₆B₆O₃₀(Si₂O₇)
Silicate
Monoclinic
Borax
Na₂B₄O₅(OH)₄·8H₂O
Borate
Monoclinic
Mohs 2–2.5
Borcarite
Ca₄MgB₄O₆(CO₃)₂(OH)₆
Borate
Monoclinic
Mohs 4–4.5
B
Borisenkoite
Cu₃[(V,As)O₄]₂
Oxides & Hydroxide
Monoclinic
Mohs 4.5
Bornemanite
Na₆(Na )Ba₂Ti₂Nb₂(Si₂O₇)₄(PO₄)₂O₄(OH)₂F₂
Silicate
Monoclinic
Mohs 3.5–4
Borocookeite
LiAl₄(Si₃B)O₁₀(OH)₈
Silicate
Monoclinic
Mohs 3
B
Borodaevite
Ag₄.₈₃Fe₀.₂₁Pb₀.₄₅(Bi,Sb)₈.₈₄S₁₆
Sulfosalt
Monoclinic
Boromuscovite
KAl₂(Si₃B)O₁₀(OH)₂
Silicate
Monoclinic
Mohs 2.5–3
Botallackite
Cu₂Cl(OH)₃
Halide
Monoclinic
Botryogen
MgFe³⁺(SO₄)₂(OH)·7H₂O
Sulfate
Monoclinic
Mohs 2–2.5
B
Bouazzerite
Bi₆(Mg,Co)₁₁Fe₁₄(AsO₄)₁₈O₁₂(OH)₄·86H₂O
Arsenate
Monoclinic
B
Bounahasite
Cu¹⁺Cu²⁺₂(OH)₃Cl₂
Halide
Monoclinic
Boussingaultite
(NH₄)₂Mg(SO₄)₂·6H₂O
Sulfate
Monoclinic
Mohs 2
Boyleite
Zn(SO₄)·4H₂O
Sulfate
Monoclinic
Mohs 2
Brackebuschite
Pb₂Mn³⁺(VO₄)₂(OH)
Vanadate
Monoclinic
B
Bradaczekite
NaCuCuCu₂(AsO₄)₃
Arsenate
Monoclinic
Bradleyite
Na₃Mg(PO₄)(CO₃)
Phosphate
Monoclinic
Brandtite
Ca₂Mn²⁺(AsO₄)₂·2H₂O
Arsenate
Monoclinic
Mohs 3.5
Brannerite
UTi₂O₆
Oxides & Hydroxide
Monoclinic
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