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Silicate minerals

Built on the SiO₄ tetrahedron; the largest class.

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1,673 minerals · Silicate minerals
VarietyAgate specimen
Agate SiO₂
SilicateTrigonalMohs 6.5–7
Almandine specimen
Almandine Fe²⁺₃Al₂(SiO₄)₃
SilicateCubicMohs 7–7.5
VarietyAmethyst specimen
Amethyst SiO₂
SilicateTrigonalMohs 7
VarietyAquamarine specimen
Aquamarine Be₃Al₂Si₆O₁₈
SilicateHexagonalMohs 7.5–8
Beryl specimen
Beryl Be₃Al₂Si₆O₁₈
SilicateHexagonalMohs 7.5–8
GroupBiotite specimen
Biotite K(Mg,Fe)₃(AlSi₃O₁₀)(OH)₂
SilicateMonoclinicMohs 2.5–3
VarietyCitrine specimen
Citrine SiO₂
SilicateTrigonalMohs 7
VarietyEmerald specimen
Emerald Be₃Al₂Si₆O₁₈
SilicateHexagonalMohs 7.5–8
GroupFeldspar specimen
Feldspar (K,Na,Ca)(Al,Si)₄O₈
SilicateTriclinicMohs 6–6.5
Forsterite specimen
Forsterite Mg₂(SiO₄)
SilicateOrthorhombicMohs 6.5–7
GroupGarnet specimen
Garnet X₃Y₂(SiO₄)₃
SilicateCubicMohs 6.5–7.5
Jade specimen
Jade Jadeite or nephrite
SilicateMonoclinicMohs 6–7
Jadeite specimen
Jadeite NaAlSi₂O₆
SilicateMonoclinicMohs 6–7
VarietyJasper specimen
Jasper SiO₂
SilicateTrigonalMohs 6.5–7
VarietyLabradorite specimen
Labradorite (Ca,Na)(Al,Si)₄O₈
SilicateTriclinicMohs 6–6.5
RockLapis Lazuli specimen
Lapis Lazuli Rock — mainly lazurite
SilicateCubicMohs 5–5.5
GroupLepidolite specimen
Lepidolite K(Li,Al)₃(Si,Al)₄O₁₀(F,OH)₂
SilicateMonoclinicMohs 2.5–3
VarietyMoonstone specimen
Moonstone KAlSi₃O₈
SilicateMonoclinicMohs 6–6.5
Muscovite specimen
Muscovite KAl₂(Si₃Al)O₁₀(OH)₂
SilicateMonoclinicMohs 2–2.5
MineraloidObsidian specimen
Obsidian SiO₂-rich volcanic glass
SilicateAmorphousMohs 5–5.5
GroupOlivine specimen
Olivine (Mg,Fe)₂SiO₄
SilicateOrthorhombicMohs 6.5–7
Opal specimen
Opal SiO₂·nH₂O
SilicateHexagonalMohs 5.5–6.5
VarietyPeridot specimen
Peridot (Mg,Fe)₂SiO₄
SilicateOrthorhombicMohs 6.5–7
FeaturedQuartz specimen
Quartz SiO₂
SilicateHexagonalMohs 7
Rhodonite specimen
Rhodonite CaMn₃Mn(Si₅O₁₅)
SilicateTriclinicMohs 5.5–6.5
VarietyRose Quartz specimen
Rose Quartz SiO₂
SilicateTrigonalMohs 7
VarietySmoky Quartz specimen
Smoky Quartz SiO₂
SilicateTrigonalMohs 7
Sodalite specimen
Sodalite Na₄(Si₃Al₃)O₁₂Cl
SilicateCubicMohs 5.5–6
Spodumene specimen
Spodumene LiAlSi₂O₆
SilicateMonoclinicMohs 6.5–7
VarietyTanzanite specimen
Tanzanite Ca₂Al₃(SiO₄)₃(OH)
SilicateOrthorhombicMohs 6–7
Topaz specimen
Topaz Al₂SiO₄F₂
SilicateOrthorhombicMohs 8
GroupTourmaline specimen
Tourmaline (Na,Ca)(Mg,Fe,Li,Al)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄
SilicateTrigonalMohs 7–7.5
Zircon specimen
Zircon Zr(SiO₄)
SilicateTetragonalMohs 7.5
A
Abenakiite-(Ce) Na₂₆Ce₆(Si₆O₁₈)(PO₄)₆(CO₃)₆(SO₂)O
SilicateHexagonalMohs 4.5
A
Abswurmbachite Cu²⁺Mn³⁺₆O₈(SiO₄)
SilicateTetragonal
Actinolite specimen
Actinolite Ca₂(Mg₄.₅₋₂.₅Fe²⁺₀.₅₋₂.₅)Si₈O₂₂(OH)₂
SilicateMonoclinicMohs 5–6
A
Adachiite CaFe²⁺₃Al₆(Si₅AlO₁₈)(BO₃)₃(OH)₃(OH)
SilicateHexagonalMohs 7
A
Adrianite Ca₁₂(Al₄Mg₃Si₇)O₃₂Cl₆
SilicateCubic
Aegirine specimen
Aegirine NaFe³⁺Si₂O₆
SilicateMonoclinicMohs 6–6.5
Aegirine-augite specimen
Aegirine-augite (Ca,Na)(Fe³⁺,Mg,Fe²⁺)Si₂O₆
SilicateMonoclinic
Aenigmatite specimen
Aenigmatite Na₄[Fe²⁺₁₀Ti₂]O₄[Si₁₂O₃₆]
SilicateTriclinicMohs 5.5
Aerinite specimen
Aerinite (Ca,Na)₆(Fe³⁺,Fe²⁺,Mg,Al)₄(Al,Mg)₆Si₁₂O₃₆(OH)₁₂(CO₃)·12H₂O
SilicateHexagonalMohs 3
Afghanite specimen
Afghanite (Na,K)₂₂Ca₁₀(Si₂₄Al₂₄)O₉₆(SO₄)₆Cl₆
SilicateHexagonalMohs 5.5–6
Afwillite specimen
Afwillite Ca₃[SiO₄][SiO₂(OH)₂]·2H₂O
SilicateMonoclinicMohs 3–4
A
Agakhanovite-(Y) YCa   ₂KBe₃Si₁₂O₃₀
SilicateHexagonalMohs 6
Agrellite specimen
Agrellite NaCa₂Si₄O₁₀F
SilicateTriclinicMohs 5.5
A
Ahrensite SiFe₂O₄
SilicateCubic
Ajoite specimen
Ajoite K₃Cu²⁺₂₀Al₃Si₂₉O₇₆(OH)₁₆·8H₂O
SilicateTriclinicMohs 2
Akatoreite specimen
Akatoreite Mn²⁺₉Al₂Si₈O₂₄(OH)₈
SilicateTriclinicMohs 6
A
Akimotoite MgSiO₃
SilicateHexagonal
A
Aklimaite Ca₄[Si₂O₅(OH)₂](OH)₄·5H₂O
SilicateMonoclinicMohs 3–4
Alamosite specimen
Alamosite PbSiO₃
SilicateMonoclinicMohs 4.5
Albite specimen
Albite Na(AlSi₃O₈)
SilicateTriclinicMohs 6–6.5
A
Aleksandrovite KCa₇Sn₂Li₃Si₁₂O₃₆F₂
SilicateMonoclinicMohs 4–4.5
A
Alexkuznetsovite-(Ce) Ce₂Mn(CO₃)(Si₂O₇)
SilicateMonoclinicMohs 5
A
Alexkuznetsovite-(La) La₂Mn(CO₃)(Si₂O₇)
SilicateMonoclinicMohs 5
A
Alflarsenite NaCa₂Be₃Si₄O₁₃(OH)·2H₂O
SilicateMonoclinicMohs 4
Aliettite specimen
Aliettite Ca₀.₂Mg₆(Si,Al)₈O₂₀(OH)₄·4H₂O
Silicate
GroupAllanite specimen
Allanite (Ca,Ce)₂(Al,Fe)₃Si₃O₁₂(OH)
SilicateMonoclinicMohs 5.5–6
Allanite-(Ce) specimen
Allanite-(Ce) CaCe(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)
SilicateMonoclinicMohs 5.5–6
A
Allanite-(La) CaLa(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)
SilicateMonoclinicMohs 6
Allanite-(Nd) specimen
Allanite-(Nd) CaNd(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)
SilicateMonoclinicMohs 6
Allanite-(Y) specimen
Allanite-(Y) CaY(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)
SilicateMonoclinic
Alleghanyite specimen
Alleghanyite Mn²⁺₅(SiO₄)₂(OH)₂
SilicateMonoclinicMohs 5.5
Allophane specimen
Allophane Al₂O₃(SiO₂)₁.₃₋₂.₀·2.5-3.0H₂O
SilicateMohs 3
A
Alloriite (Na,K,Ca)₂₄(Na,Ca)₄Ca₄(Si,Al)₄₈O₉₆(SO₄)₄(SO₃,CO₃)₂(OH,Cl)₂(H₂O,OH)₄
SilicateHexagonalMohs 5
A
Alluaivite Na₁₉(Ca,Mn²⁺)₆(Ti,Nb)₃Si₂₆O₇₄Cl·2H₂O
SilicateHexagonalMohs 5–6
A
Almarudite K(   ,Na)₂(Mn,Fe,Mg)₂[(Be,Al)₃Si₁₂]O₃₀
SilicateHexagonal
A
Alnaperbøeite-(Ce) (CaCe₂.₅Na₀.₅)(Al₄)(Si₂O₇)(SiO₄)₃O(OH)₂
SilicateMonoclinicMohs 6–7
Alpeite specimen
Alpeite Ca₄Mn³⁺₂Al₂(Mn³⁺Mg)(SiO₄)₂(Si₃O₁₀)(VO₄)(OH)₆
SilicateOrthorhombicMohs 5.5–6
A
Alsakharovite-Zn NaSrKZn(Ti,Nb)₄(Si₄O₁₂)₂(O,OH)₄·7H₂O
SilicateMonoclinicMohs 5
A
Altisite Na₃K₆Ti₂Al₂Si₈O₂₆Cl₃
SilicateMonoclinic
A
Alumino-oxy-rossmanite Al₃Al₆(Si₅AlO₁₈)(BO₃)₃(OH)₃O
SilicateHexagonalMohs 7
Aluminoceladonite specimen
Aluminoceladonite K(Mg,Fe²⁺)Al(Si₄O₁₀)(OH)₂
SilicateMonoclinic
Aluminocerite-(Ce) specimen
Aluminocerite-(Ce) (Ce,REE,Ca)₉(Al,Fe³⁺)(SiO₄)₃[SiO₃(OH)]₄(OH)₃
SilicateHexagonal
Aluminosugilite specimen
Aluminosugilite KNa₂Al₂Li₃Si₁₂O₃₀
SilicateHexagonalMohs 6–6.5
A
Alumovesuvianite Ca₁₉Al(Al₁₀Mg₂)Si₁₈O₆₉(OH)₉
SilicateTetragonalMohs 6.5
A
Alumoåkermanite (Ca,Na)₂(Al,Mg,Fe²⁺)(Si₂O₇)
SilicateTetragonal
A
Amamoorite CaMn²⁺₂Mn³⁺(Si₂O₇)O(OH)
SilicateMonoclinicMohs 6
VarietyAmazonite specimen
Amazonite KAlSi₃O₈
SilicateTriclinicMohs 6–6.5
Amesite specimen
Amesite Mg₂Al(AlSiO₅)(OH)₄
SilicateTriclinicMohs 2.5–3
VarietyAmetrine specimen
Ametrine SiO₂
SilicateTrigonalMohs 7
Amicite specimen
Amicite K₂Na₂(Al₄Si₄O₁₆)·5H₂O
SilicateMonoclinicMohs 4.5
Aminoffite specimen
Aminoffite Ca₃(BeOH)₂Si₃O₁₀
SilicateTetragonalMohs 5.5–6
A
Ammonioleucite (NH₄)(AlSi₂O₆)
SilicateTetragonal
GroupAmphibole specimen
Amphibole A₀₋₁B₂C₅T₈O₂₂(OH)₂
SilicateMonoclinicMohs 5–6.5
Amstallite specimen
Amstallite CaAl[(Al,Si)₄O₈(OH)₂](OH)₂·(H₂O,Cl)
SilicateMonoclinicMohs 3–5
Analcime specimen
Analcime Na(AlSi₂O₆)·H₂O
SilicateTetragonalMohs 5–5.5
A
Anandite BaFe²⁺₃(Si₃Fe³⁺)O₁₀S(OH)
SilicateMonoclinicMohs 3–4
Andalusite specimen
Andalusite Al₂SiO₅
SilicateOrthorhombicMohs 6.5–7.5
VarietyAndesine specimen
Andesine (Ca,Na)(Al,Si)₄O₈
SilicateTriclinicMohs 6–6.5
Andradite specimen
Andradite Ca₃Fe³⁺₂(SiO₄)₃
SilicateCubicMohs 6.5–7
Andrianovite specimen
Andrianovite Na₁₂(K,Sr,Ce)₃Ca₆Mn₃Zr₃Nb(Si₂₅O₇₃)(O,H₂O,OH)₅
SilicateHexagonalMohs 5
Andrémeyerite specimen
Andrémeyerite BaFe²⁺₂(Si₂O₇)
SilicateMonoclinicMohs 5.5
Annite specimen
Annite KFe²⁺₃(AlSi₃O₁₀)(OH)₂
SilicateMonoclinicMohs 2.5–3
Anorthite specimen
Anorthite Ca(Al₂Si₂O₈)
SilicateTriclinicMohs 6–6.5
Anthophyllite specimen
Anthophyllite Mg₂Mg₅Si₈O₂₂(OH)₂
SilicateOrthorhombicMohs 5.5–6
Antigorite specimen
Antigorite Mg₃Si₂O₅(OH)₄
SilicateMonoclinicMohs 2.5–3.5
A
Apachite Cu²⁺₉Si₁₀O₂₉·11H₂O
SilicateMonoclinicMohs 2
Aqualite specimen
Aqualite (H₃O)₈(Na,K,Sr)₅Ca₆Zr₃Si₂₆O₆₆(OH)₉Cl
SilicateHexagonalMohs 4–5
A
Aradite BaCa₆[(SiO₄)(VO₄)](VO₄)₂F
SilicateHexagonal
A
Arapovite (K₁₋ₓ   ₓ)(Ca,Na)₂U⁴⁺Si₈O₂₀ [x ≈ 0.5]
SilicateTetragonalMohs 5.5–6
A
Aravaite Ba₂Ca₁₈(SiO₄)₆(PO₄)₃(CO₃)F₃O
SilicateHexagonalMohs 5
Ardennite-(As) specimen
Ardennite-(As) Mn²⁺₄Al₄(AlMg)(AsO₄)(SiO₄)₂(Si₃O₁₀)(OH)₆
SilicateOrthorhombic
Ardennite-(V) specimen
Ardennite-(V) Mn²⁺₄Al₄(AlMg)(VO₄)(SiO₄)₂(Si₃O₁₀)(OH)₆
SilicateOrthorhombicMohs 6–7
Arfvedsonite specimen
Arfvedsonite NaNa₂(Fe²⁺₄Fe³⁺)Si₈O₂₂(OH)₂
SilicateMonoclinicMohs 5–6
A
Ariegilatite BaCa₁₂(SiO₄)₄(PO₄)₂F₂O
SilicateHexagonalMohs 4–4.5
A
Armbrusterite Na₆K₅Mn³⁺Mn²⁺₁₄(Si₉O₂₂)₄(OH)₁₀·4H₂O
SilicateMonoclinic
Armenite specimen
Armenite BaCa₂(Al₆Si₉)O₃₀·2H₂O
SilicateOrthorhombicMohs 7–8
Armstrongite specimen
Armstrongite CaZr(Si₆O₁₅)·2H₂O
SilicateMonoclinicMohs 4.6
A
Arrheniusite-(Ce) CaMg[(Ce₇Y₃)Ca₅](SiO₄)₃(Si₃B₃O₁₈)(AsO₄)(BO₃)F₁₁
SilicateHexagonalMohs 5
Arsenmedaite specimen
Arsenmedaite Mn²⁺₆As⁵⁺Si₅O₁₈(OH)
SilicateMonoclinic
Asbecasite specimen
Asbecasite Ca₃TiAs₆Be₂Si₂O₂₀
SilicateHexagonalMohs 6.5–7
Ashburtonite specimen
Ashburtonite HCu₄Pb₄Si₄O₁₂(HCO₃)₄(OH)₄Cl
SilicateTetragonal
Ashcroftine-(Y) specimen
Ashcroftine-(Y) K₅Na₅Y₁₂Si₂₈O₇₀(OH)₂(CO₃)₈·8H₂O
SilicateTetragonalMohs 5
A
Asimowite Fe₂SiO₄
SilicateOrthorhombic
Asisite specimen
Asisite Pb₇SiO₈Cl₂
SilicateTetragonal
A
Aspidolite NaMg₃(Si₃Al)O₁₀(OH)₂
SilicateTriclinicMohs 2–3
Astrophyllite specimen
Astrophyllite K₂NaFe²⁺₇Ti₂(Si₄O₁₂)₂O₂(OH)₄F
SilicateTriclinicMohs 3
A
Atelisite-(Y) Y₄Si₃O₈(OH)₈
SilicateTetragonal
A
Attakolite CaMn²⁺Al₄(HSiO₄)(PO₄)₃(OH)₄
SilicateMonoclinicMohs 5
Augite specimen
Augite (Ca,Mg,Fe)₂Si₂O₆
SilicateMonoclinicMohs 5.5–6
A
Avdeevite (Na,Cs)(Be₂Li)Al₂(Si₆O₁₈)
SilicateHexagonal
VarietyAventurine specimen
Aventurine SiO₂
SilicateTrigonalMohs 7
GroupAxinite specimen
Axinite Ca₂(Mn,Fe,Mg)Al₂BSi₄O₁₅(OH)
SilicateTriclinicMohs 6.5–7
Axinite-(Fe) specimen
Axinite-(Fe) Ca₄Fe²⁺₂Al₄[B₂Si₈O₃₀](OH)₂
SilicateTriclinicMohs 6.5–7
Axinite-(Mg) specimen
Axinite-(Mg) Ca₄Mg₂Al₄[B₂Si₈O₃₀](OH)₂
SilicateTriclinicMohs 6.5–7
Axinite-(Mn) specimen
Axinite-(Mn) Ca₄Mn²⁺₂Al₄[B₂Si₈O₃₀](OH)₂
SilicateTriclinicMohs 6.5–7
Babingtonite specimen
Babingtonite Ca₂Fe²⁺Fe³⁺Si₅O₁₄(OH)
SilicateTriclinicMohs 5.5–6
B
Badakhshanite-(Y) Y₂Mn₄Al(Si₂B₇BeO₂₄)
SilicateOrthorhombicMohs 6.5–7
Bafertisite specimen
Bafertisite Ba₂Fe²⁺₄Ti₂(Si₂O₇)₂O₂(OH)₂F₂
SilicateMonoclinicMohs 5
Baghdadite specimen
Baghdadite Ca₆Zr₂(Si₂O₇)₂O₄
SilicateMonoclinicMohs 6
B
Baileychlore (Zn,Fe²⁺,Al,Mg)₆(Si,Al)₄O₁₀(OH)₈
SilicateMonoclinicMohs 5
Balangeroite specimen
Balangeroite Mg₂₁Si₈O₂₇(OH)₂₀
SilicateMonoclinic
B
Balestraite KLi₂V⁵⁺Si₄O₁₂
SilicateMonoclinicMohs 2.5–3
Balipholite specimen
Balipholite LiBaMg₂Al₃(Si₂O₆)₂(OH)₈
SilicateOrthorhombic
B
Balliranoite (Na,K)₆Ca₂(Si₆Al₆O₂₄)Cl₂(CO₃)
SilicateHexagonalMohs 5
Banalsite specimen
Banalsite Na₂BaAl₄Si₄O₁₆
SilicateOrthorhombicMohs 6.5
Bannisterite specimen
Bannisterite (Ca,K,Na)(Mn²⁺,Fe²⁺)₁₀(Si,Al)₁₆O₃₈(OH)₈·nH₂O
SilicateMonoclinicMohs 4
Baotite specimen
Baotite Ba₄(Ti,Nb,W)₈O₁₆(SiO₃)₄Cl
SilicateTetragonalMohs 6
Baratovite specimen
Baratovite KLi₃Ca₇Ti₂(SiO₃)₁₂F₂
SilicateMonoclinicMohs 3.5–4
B
Bario-orthojoaquinite Ba₄Fe²⁺₂Ti₂O₂(SiO₃)₈·H₂O
SilicateOrthorhombicMohs 5.5
Barrerite specimen
Barrerite Na₂(Si₇Al₂)O₁₈·6H₂O
SilicateOrthorhombicMohs 3.5
B
Barroisite (NaCa)(Mg₃Al₂)(Si₇Al)O₂₂(OH)₂
SilicateMonoclinicMohs 5–6
B
Barrotite Cu₉Al(HSiO₄)₂[(SO₄)(HAsO₄)₀.₅](OH)₁₂·8H₂O
SilicateHexagonalMohs 2
B
Barrydawsonite-(Y) Na₁.₅Y₀.₅CaSi₃O₉H
SilicateMonoclinic
B
Barwoodite Mn²⁺₆(Nb⁵⁺,   )₂(SiO₄)₂(O,OH)₆
SilicateHexagonalMohs 3.5
B
Barylite BaBe₂Si₂O₇
SilicateOrthorhombicMohs 7
B
Barysilite Pb₈Mn(Si₂O₇)₃
SilicateHexagonalMohs 3
B
Barytolamprophyllite (BaK)Ti₂Na₃Ti(Si₂O₇)₂O₂(OH)₂
SilicateMonoclinicMohs 2–3
B
Batievaite-(Y) Ca₂Y₂[(H₂O)₂   ]Ti(Si₂O₇)₂(OH)₂(H₂O)₂
SilicateTriclinicMohs 5–5.5
Batisite specimen
Batisite Na₂BaTi₂O₂(Si₂O₆)₂
SilicateOrthorhombicMohs 6
B
Batisivite BaTi₆(V,Cr)₈(Si₂O₇)O₂₂
SilicateTriclinicMohs 7–7.5
Bavenite specimen
Bavenite Ca₄Be₂₊ₓAl₂₋ₓSi₉O₂₆₋ₓ(OH)₂₊ₓ (x = 0 to 1)
SilicateOrthorhombicMohs 5.5
B
Bavsiite Ba₂V₂O₂[Si₄O₁₂]
SilicateTetragonalMohs 4
Bazirite specimen
Bazirite BaZrSi₃O₉
SilicateHexagonal
Bazzite specimen
Bazzite Be₃(Sc,Fe³⁺,Mg)₂Si₆O₁₈·Na₀.₃₂·nH₂O
SilicateHexagonalMohs 6.5–7
Bechererite specimen
Bechererite Zn₇Cu(OH)₁₃[SiO(OH)₃(SO₄)]
SilicateHexagonalMohs 2–3
Beidellite specimen
Beidellite (Na,Ca)₀.₃Al₂(Si,Al)₄O₁₀(OH)₂·nH₂O
SilicateMohs 1–2
Belkovite specimen
Belkovite Ba₃Nb₆(Si₂O₇)₂O₁₂
SilicateHexagonalMohs 6–7
Bellbergite specimen
Bellbergite (K,Ba,Sr)₂Sr₂Ca₂(Ca,Na)₄(Si,Al)₃₆O₇₂·30H₂O
SilicateHexagonalMohs 5
Bementite specimen
Bementite Mn₇Si₆O₁₅(OH)₈
SilicateMonoclinicMohs 4.5–6
Benitoite specimen
Benitoite BaTiSi₃O₉
SilicateHexagonalMohs 6–6.5
B
Bennesherite Ba₂Fe²⁺Si₂O₇
SilicateTetragonalMohs 5
Berezanskite specimen
Berezanskite KTi₂Li₃Si₁₂O₃₀
SilicateHexagonalMohs 2.5–3
Berthierine specimen
Berthierine (Fe²⁺,Fe³⁺,Al)₃(Si,Al)₂O₅(OH)₄
SilicateOrthorhombic
Bertrandite specimen
Bertrandite Be₄Si₂O₇(OH)₂
SilicateOrthorhombicMohs 6–7
B
Beryllite Be₃(SiO₄)(OH)₂·H₂O
SilicateMohs 1
Betalomonosovite specimen
Betalomonosovite Na₅₊ₓTi₄(Si₂O₇)₂[PO₃(OH)]₂₋ᵧ[PO₂(OH)₂]ᵧO₂[(OH,F)₂₋ₓOz], [0<x<2, 0<y<1, 0<z<1]
SilicateTriclinic
B
Betzite Na₆Ca₂(Al₆Si₆O₂₄)Cl₄
SilicateHexagonal
B
Biachellaite (Na,Ca,K)₈(Si₆Al₆O₂₄)(SO₄)₂(OH)₀.₅·H₂O
SilicateHexagonalMohs 5
Bicchulite specimen
Bicchulite Ca₂Al₂SiO₆(OH)₂
SilicateCubicMohs 2.5
Bigcreekite specimen
Bigcreekite BaSi₂O₅·4H₂O
SilicateOrthorhombicMohs 2–3
Bikitaite specimen
Bikitaite LiAlSi₂O₆·H₂O
SilicateTriclinicMohs 6
B
Biraite-(Ce) Ce₂Fe²⁺(Si₂O₇)(CO₃)
SilicateMonoclinicMohs 5
B
Biraite-(La) La₂Fe²⁺(CO₃)(Si₂O₇)
SilicateMonoclinicMohs 5
B
Birunite Ca₁₈(SiO₃)₈.₅(CO₃)₈.₅(SO₄)·15H₂O
Silicate
Bismutoferrite specimen
Bismutoferrite Fe³⁺₂Bi(SiO₄)₂(OH)
SilicateMonoclinic
B
Bityite CaLiAl₂(Si₂BeAl)O₁₀(OH)₂
SilicateMonoclinicMohs 4–4.5
B
Bobmeyerite Pb₄(Al₃Cu)(Si₄O₁₂)(S₀.₅Si₀.₅O₄)(OH)₇Cl(H₂O)₃
SilicateOrthorhombic
B
Bobshannonite Na₂KBa(Mn,Na)₈(Nb,Ti)₄(Si₂O₇)₄O₄(OH)₄(O,F)₂
SilicateTriclinicMohs 4
B
Bobtraillite (Na,Ca)₁₃Sr₁₁(Zr,Y,Nb)₁₄Si₄₂B₆O₁₃₂(OH)₁₂·12H₂O
SilicateHexagonalMohs 5.5
Boggsite specimen
Boggsite Na₃Ca₈(Si₇₇Al₁₉)O₁₉₂·70H₂O
SilicateOrthorhombicMohs 3.5
B
Bohseite Ca₄Be₃₊ₓAl₁₋ₓSi₉O₂₅₋ₓ(OH)₃₊ₓ (x = 0 to 1)
SilicateOrthorhombicMohs 5–6
B
Bolotinaite (Na₇   )(Al₆Si₆O₂₄)F·4H₂O
SilicateCubic
Boltwoodite specimen
Boltwoodite (K,Na)(UO₂)(SiO₃OH)·1.5H₂O
SilicateMonoclinicMohs 3.5–4
B
Boralsilite Al₁₆B₆O₃₀(Si₂O₇)
SilicateMonoclinic
Bornemanite specimen
Bornemanite Na₆(Na   )Ba₂Ti₂Nb₂(Si₂O₇)₄(PO₄)₂O₄(OH)₂F₂
SilicateMonoclinicMohs 3.5–4
Borocookeite specimen
Borocookeite LiAl₄(Si₃B)O₁₀(OH)₈
SilicateMonoclinicMohs 3
B
Boromullite Al₉BSi₂O₁₉
SilicateOrthorhombic
Boromuscovite specimen
Boromuscovite KAl₂(Si₃B)O₁₀(OH)₂
SilicateMonoclinicMohs 2.5–3
B
Bortolanite Ca₂(Ca₁.₅Zr₀.₅)Na(NaCa)Ti(Si₂O₇)₂(OF)F₂
SilicateTriclinicMohs 5
Bosiite specimen
Bosiite NaFe³⁺₃(Al₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O
SilicateHexagonalMohs 7
B
Bostwickite CaMn³⁺₆Si₃O₁₆·7H₂O
SilicateMohs 1
Braccoite specimen
Braccoite NaMn²⁺₅[Si₅O₁₄(OH)](AsO₃)(OH)
SilicateTriclinic
Brannockite specimen
Brannockite KSn₂(Li₃Si₁₂)O₃₀
SilicateHexagonal
Braunite specimen
Braunite Mn²⁺Mn³⁺₆O₈(SiO₄)
SilicateTetragonalMohs 6–6.5
B
Bredigite Ca₇Mg(SiO₄)₄
SilicateOrthorhombic
Brewsterite-Ba specimen
Brewsterite-Ba Ba(Al₂Si₆)O₁₆·5H₂O
SilicateMonoclinicMohs 5–5.5
Brewsterite-Sr specimen
Brewsterite-Sr Sr(Al₂Si₆)O₁₆·5H₂O
SilicateMonoclinicMohs 4.5
B
Breyite Ca₃Si₃O₉
SilicateTriclinic
B
Bridgmanite MgSiO₃
SilicateOrthorhombic
Brindleyite specimen
Brindleyite (Ni,Al)₃(Si,Al)₂O₅(OH)₄
SilicateTetragonalMohs 2.5–3
Brinrobertsite specimen
Brinrobertsite (Na,K,Ca)₀.₃(Al,Fe,Mg)₄(Si,Al)₈O₂₀(OH)₄·3.5H₂O
SilicateMonoclinic
Britholite-(Ce) specimen
Britholite-(Ce) (Ce,Ca)₅(SiO₄)₃(OH)
SilicateMonoclinicMohs 5
Britholite-(Y) specimen
Britholite-(Y) (Y,Ca)₅(SiO₄)₃(OH)
SilicateMonoclinicMohs 6
Britvinite specimen
Britvinite Pb₁₄Mg₉(Si₁₀O₂₈)(BO₃)₄(CO₃)₂(OH)₁₂F₂
SilicateTriclinicMohs 3
Buddingtonite specimen
Buddingtonite (NH₄)(AlSi₃)O₈
SilicateMonoclinicMohs 5.5
B
Bulgakite Li₂(Ca,Na)Fe²⁺₇Ti₂(Si₄O₁₂)₂O₂(OH)₄(O,F)(H₂O)₂
SilicateTriclinicMohs 3
Bultfonteinite specimen
Bultfonteinite Ca₂SiO₃(OH)F·H₂O
SilicateTriclinicMohs 4.5
Bunnoite specimen
Bunnoite Mn²⁺₆AlSi₆O₁₈(OH)₃
SilicateTriclinicMohs 5.5
Burckhardtite specimen
Burckhardtite Pb₂(Fe³⁺Te⁶⁺)(AlSi₃O₈)O₆
SilicateHexagonalMohs 2
B
Burnettite CaVAlSiO₆
SilicateMonoclinic
B
Burovaite-Ca (Na,K)₄Ca₂(Ti,Nb)₈[Si₄O₁₂]₄(OH,O)₈·12H₂O
SilicateMonoclinic
Burpalite specimen
Burpalite Na₄Ca₂Zr₂(Si₂O₇)₂F₄
SilicateMonoclinicMohs 5–6
Buryatite specimen
Buryatite Ca₃(Si,Fe³⁺,Al)(SO₄)B(OH)₄(OH,O)₆·12H₂O
SilicateHexagonalMohs 2.5
B
Bussenite Ba₄(Na,   )₂(Fe²⁺,Na)₂Ti₂(Si₂O₇)₂(CO₃)₂O₂(OH)₂(H₂O)₂F₂
SilicateTriclinicMohs 4
Bussyite-(Ce) specimen
Bussyite-(Ce) (Ce,REE)₃(Na,H₂O)₆MnSi₉Be₅(O,OH)₃₀F₄
SilicateMonoclinicMohs 4
B
Bussyite-(Y) (Y,REE,Ca)₃(Na,Ca)₆MnSi₉Be₅(O,F,OH)₃₄
SilicateMonoclinicMohs 4
Bustamite specimen
Bustamite Mn₂Ca₂MnCa(Si₃O₉)₂
SilicateTriclinicMohs 5.5–6.5
Byelorussite-(Ce) specimen
Byelorussite-(Ce) NaBa₂Ce₂Mn²⁺Ti₂Si₈O₂₆(F,OH)·H₂O
SilicateOrthorhombicMohs 5.5–6
B
Bykovaite (Ba,Na,K)₂(Na,Ti,Mn)₄(Ti,Nb)₂O₂Si₄O₁₄(H₂O,F,OH)₂·3.5H₂O
SilicateMonoclinicMohs 3
Bystrite specimen
Bystrite (Na,K)₇Ca(Si₆Al₆)O₂₄(S²⁻)₁.₅·H₂O
SilicateHexagonalMohs 5
VarietyBytownite specimen
Bytownite (Ca,Na)(Al,Si)₄O₈
SilicateTriclinicMohs 6–6.5
B
Byzantievite Ba₅(Ca,REE,Y)₂₂(Ti,Nb)₁₈(SiO₄)₄[(PO₄),(SiO₄)]₄(BO₃)₉O₂₂[(OH),F]₄₃(H₂O)₁.₅
SilicateHexagonalMohs 4.5–5
C
Cairncrossite Sr₂Ca₇₋ₓNa₂ₓ(Si₄O₁₀)₄(OH)₂(H₂O)₁₅₋ₓ
SilicateTriclinicMohs 3
C
Calcinaksite KNaCa(Si₄O₁₀)·H₂O
SilicateTriclinicMohs 5
C
Calcio-olivine Ca₂(SiO₄)
SilicateOrthorhombic
C
Calciocatapleiite CaZrSi₃O₉·2H₂O
SilicateOrthorhombicMohs 4.5–5
Calciohilairite specimen
Calciohilairite CaZrSi₃O₉·3H₂O
SilicateHexagonalMohs 4
C
Calciomurmanite (Na,   )₂Ca(Ti,Mg,Nb)₄[Si₂O₇]₂O₂(OH,O)₂(H₂O)₄
SilicateTriclinicMohs 2.5–3
C
Calcioursilite Ca₄(UO₂)₄(Si₂O₅)₅(OH)₆·15H₂O
SilicateOrthorhombic
Calcybeborosilite-(Y) specimen
Calcybeborosilite-(Y) (Y,REE,Ca)₂(B,Be)₂(SiO₄)₂(OH,O)₂
SilicateMonoclinic
Calderite specimen
Calderite Mn²⁺₃Fe³⁺₂(SiO₄)₃
SilicateCubicMohs 7
Canasite specimen
Canasite K₃Na₃Ca₅Si₁₂O₃₀(OH)₄
SilicateMonoclinic
Cancrinite specimen
Cancrinite (Na,Ca,   )₈(Al₆Si₆)O₂₄(CO₃,SO₄)₂·2H₂O
SilicateHexagonalMohs 5–6
Cancrisilite specimen
Cancrisilite Na₇(Si₇Al₅)O₂₄(CO₃)·3H₂O
SilicateHexagonalMohs 5
Cappelenite-(Y) specimen
Cappelenite-(Y) BaY₆B₆Si₃O₂₄F₂
SilicateHexagonalMohs 6–6.5
C
Capranicaite KCaNaAl₄B₄Si₂O₁₈
SilicateMonoclinicMohs 6
C
Carbobystrite Na₈(Al₆Si₆O₂₄)(CO₃)·4H₂O
SilicateHexagonalMohs 7

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