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Minerals containing silicon
1,605 minerals
Silicon — element
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Natronambulite | (Na,Li)(Mn,Ca)₄Si₅O₁₄OH | — | — | — |
| Natrosilite | Na₂Si₂O₅ | Monoclinic | — | 2.61 g/cm³ |
| Natrotitanite | (Na₀.₅Y₀.₅)TiO(SiO₄) | Monoclinic | — | — |
| Naujakasite | (Na,K)₆(Fe²⁺,Mn²⁺,Ca)(Al,Fe)₄Si₈O₂₆ | — | — | — |
| Nchwaningite | Mn₂SiO₃(OH)₂·H₂O | Orthorhombic | — | — |
| Nechelyustovite | (Na☐)☐₂Ba₄Ti₄Nb₄(Na₁₁☐)Ti₄(Si₂O₇)₈O₈(OH)₈(H₂O)₁₂ | Monoclinic | — | — |
| Nekoite | Ca₃Si₆O₁₅*₇H₂O | — | — | — |
| Nelenite | (Mn,Fe)₁₆(Si₁₂O₃₀)(OH)₁₄[As³⁺₃O₆(OH)₃] | — | — | — |
| Neltnerite | CaMn³⁺₆(SiO₄)O₈ | Tetragonal | 6.0 | — |
| Nenadkevichite | (Na,☐)₈Nb₄(Si₄O₁₂)₂(O,OH)₄·8H₂O | Orthorhombic | — | — |
| Nepheline | Na₃K(Al₄Si₄O₁₆) | Hexagonal | — | — |
| Neptunite | Na₂KLiFe²⁺₂Ti₂Si₈O₂₄ | Monoclinic | — | — |
| Neskevaaraite-Fe | NaK₃Fe(Ti,Nb)₄(Si₄O₁₂)₂(O,OH)₄·6H₂O | — | — | — |
| Nierite | Si₃N₄ | Trigonal | — | 3.20 g/cm³ |
| Niigataite | CaSrAl₃[Si₂O₇][SiO₄]O(OH) | Monoclinic | — | — |
| Nikmelnikovite | Ca₁₂Fe²⁺Fe³⁺₃Al₃(SiO₄)₆(OH)₂₀ | Trigonal | — | — |
| Niksergievite | Ba₂Al₃(Si,Al)₄O₁₀(CO₃)(OH)₆·nH₂O | Monoclinic | — | — |
| Nimite | (Ni,Mg,Al)₆(Si,Al)₄O₁₀(OH)₈ | Monoclinic | 3.0 | — |
| Nioboholtite | (Nb₀.₆☐₀.₄)Al₆BSi₃O₁₈ | Orthorhombic | — | — |
| Niobokupletskite | K₂NaMn²⁺₇(Nb,Ti)(Si₄O₁₂)₂O₂(OH)₄(O,F) | — | — | — |
| Niobophyllite | (K,Na)₃(Fe,Mn)₆(Nb,Ti)₂Si₈(O,OH,F)₃₁ | — | — | — |
| Niocalite | Ca₇Nb(Si₂O₇)₂O₃F | Monoclinic | — | 3.17 g/cm³ |
| Nipeiite-(Ce) | Ce₉Fe³⁺(SiO₄)₆[SiO₃(OH)](OH)₃ | Trigonal | — | — |
| Noelbensonite | BaMn³⁺₂(Si₂O₇)(OH)₂·(H₂O) | Orthorhombic | — | — |
| Nolzeite | NaMn₂[Si₃BO₉](OH)₂·2H₂O | Triclinic | — | — |
| Nontronite | Na₀.₃Fe₂((Si,Al)₄O₁₀)(OH)₂ * nH₂O | Monoclinic | — | — |
| Noonkanbahite | NaKBaTi₂(Si₄O₁₂)O₂ | Orthorhombic | — | — |
| Norbergite | Mg₃SiO₄F₂ | Orthorhombic | — | 3.08 g/cm³ |
| Nordite-(Ce) | (Ce,La)(Sr,Ca)Na₂(Na,Mn)(Zn,Mg)Si₆O₁₇ | — | — | — |
| Nordite-(La) | (La,Ce)(Sr,Ca)Na₂(Na,Mn)(Zn,Mg)Si₆O₁₇ | — | — | — |
| Normandite | NaCa(Mn,Fe)(Ti,Nb,Zr)(Si₂O₇)OF | Monoclinic | — | — |
| Norrishite | KLiMn³⁺₂(Si₄O₁₀)O₂ | — | — | — |
| Nosean | Na₈(Si₆Al₆)O₂₄(SO₄)·H₂O | Cubic | 5.5 | — |
| Nybergite | Ca₄Sc₃Sn(Si₂O₇)(Si₂O₆OH)₃ | Triclinic | — | — |
| Nybøite | NaNa₂(Mg₃Al₂)(Si₇Al)O₂₂(OH)₂ | Monoclinic | 6.0 | — |
| Népouite | Ni₃Si₂O₅(OH)₄ | Orthorhombic | 2.5 | — |
| Odigitriaite | CsNa₅Ca₅[Si₁₄B₂O₃₈]F₂ | Monoclinic | — | — |
| Odinite | (Fe,Mg,Al,Fe,Ti,Mn)₂.₄((Si,Al)₂O₅)(OH)₄ | Monoclinic | — | — |
| Odintsovite | K₂Na₄Ca₃Ti₂Be₄Si₁₂O₃₈ | Orthorhombic | — | — |
| Offretite | KCaMg(Si₁₃Al₅)O₃₆·15H₂O | Hexagonal | 4.0 | — |
| Oftedalite | KSc₂☐₂Be₃Si₁₂O₃₀ | Hexagonal | 6.0 | — |
| Ohmilite | Sr₃(Ti,Fe³⁺)(Si₂O₆)₂(O,OH)·2H₂O | Monoclinic | — | — |
| Ohtaniite | Mg₃(Si₀,₅◻₀,₅)Si₂O₈ | Orthorhombic | — | — |
| Okanoganite-(Y) | (Na,Ca)₃(Y,Ce)₁₂Si₆B₂O₂₇F₁₄ | — | — | — |
| Okayamalite | Ca₂B(BSiO₇) | Tetragonal | — | — |
| Okenite | Ca₁₀Si₁₈O₄₆·18H₂O | Triclinic | — | — |
| Okhotskite | Ca₂Mn²⁺Mn³⁺₂(Si₂O₇)(SiO₄)(OH)₂·H₂O | Monoclinic | — | — |
| Olenite | Na(Al₃)Al₆(Si₆O₁₈)(BO₃)₃O₃(OH) | Trigonal | 7.0 | — |
| Olmiite | CaMn[SiO₃(OH)](OH) | Orthorhombic | — | — |
| Ominelite | (Fe²⁺,Mg)(Al,Fe³⁺)₃(SiO₄)(BO₃)O₂ | Orthorhombic | — | — |
| Omphacite | (Ca,Na)(Mg,Fe,Al)Si₂O₆ | Monoclinic | — | — |
| Oneillite | Na₁₅Ca₃Mn₃Fe²⁺₃Zr₃Nb(Si₂₅O₇₃)(O,OH,H₂O)₃(OH,Cl)₂ | Trigonal | — | — |
| Opal | SiO₂·nH₂O | — | — | — |
| Organovaite-Mn | K₂MnNb₄(Si₄O₁₂)₂O₄·5-7H₂O | — | — | — |
| Organovaite-Zn | K₂Zn(Nb,Ti)₄(Si₄O₁₂)₂(O,OH)₄·6H₂O | — | — | — |
| Orientite | Ca₈Mn³⁺₁₀(SiO₄)₃(Si₃O₁₀)₃(OH)₁₀·4H₂O | Orthorhombic | — | — |
| Orlovite | KLi₂TiSi₄O₁₁F | Monoclinic | — | — |
| Orlymanite | Ca₄Mn²⁺₃Si₈O₂₀(OH)₆·2H₂O | Hexagonal | — | — |
| Orthoclase | K(AlSi₃O₈) | Monoclinic | 6.0 | 2.46 g/cm³ |
| Orthojoaquinite-(Ce) | NaBa₂Ce₂FeTi₂[Si₄O₁₂]₂O₂(O,OH)·H₂O | Orthorhombic | — | — |
| Orthojoaquinite-(La) | NaBa₂La₂Fe²⁺Ti₂[Si₄O₁₂]₂O₂(O,OH)·H₂O | Orthorhombic | — | — |
| Osumilite | (K,Na)(Fe²⁺,Mg)₂(Al,Fe³⁺)₃(Si,Al)₁₂O₃₀ | Hexagonal | — | — |
| Osumilite-(Mg) | KMg₂Al₃(Al₂Si₁₀)O₃₀ | Hexagonal | 6.5 | — |
| Oursinite | Co(UO₂)₂(SiO₃OH)₂·6H₂O | — | — | — |
| Oxo-magnesio-hastingsite | NaCa₂(Mg₂Fe³⁺₃)(Si₆Al₂)O₂₂O₂ | Monoclinic | 6.0 | — |
| Oxo-mangani-leakeite | NaNa₂(Mn³⁺₄Li)Si₈O₂₂O₂ | Monoclinic | — | — |
| Oxy-chromium-dravite | NaCr₃(Cr₄Mg₂)(Si₆O₁₈)(BO₃)₃(OH)₃O | Trigonal | 7.5 | — |
| Oxy-dravite | Na(Al₂Mg)(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃O | Trigonal | 7.0 | — |
| Oxy-foitite | ☐(Fe²⁺Al₂)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O | Trigonal | 7.0 | — |
| Oxy-schorl | Na(Fe²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃O | Trigonal | 7.0 | — |
| Oxy-vanadium-dravite | Na(V)₃(V₄Mg₂)Si₆O₁₈(BO₃)₃(OH)₃O | Trigonal | 7.5 | — |
| Oxykinoshitalite | BaMg₂Ti⁴⁺O₂(Si₂Al₂)O₁₀ | Monoclinic | — | — |
| Oxyphlogopite | K(Mg,Ti,Fe)₃[(Si,Al)₄O₁₀](O,F)₂ | Monoclinic | — | — |
| Oyelite | Ca₁₀Si₈B₂O₂₉ * 12.₅H₂O | Orthorhombic | — | — |
| Pabstite | BaSnSi₃O₉ | Hexagonal | — | 3.98 g/cm³ |
| Palladosilicide | Pd₂Si | Hexagonal | — | 9.42 g/cm³ |
| Palygorskite | (Mg,Al)₅(Si,Al)₈O₂₀(OH)₂·8H₂O | Monoclinic | — | — |
| Panunzite | (K,Na)AlSiO₄ | — | — | — |
| Papagoite | CaCuAlSi₂O₆(OH)₃ | Monoclinic | — | 3.25 g/cm³ |
| Papikeite | NaMg₂(Mg₃Al₂)(Si₅Al₃)O₂₂(OH)₂ | Orthorhombic | — | — |