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Minerals containing silicon
1,605 minerals
Silicon — element
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Kaersutite | NaCa₂(Mg₃AlTi)(Si₆Al₂)O₂₂O₂ | Monoclinic | — | — |
| Kainosite-(Y) | Ca₂Y₂(SiO₃)₄(CO₃)·H₂O | — | — | — |
| Kalborsite | K₆Al₄BSi₆O₂₀(OH)₄Cl | Tetragonal | — | — |
| Kalifersite | (K,Na)₅Fe³⁺₇Si₂₀O₅₀(OH)₆ * 12H₂O | — | — | — |
| Kaliophilite | KAlSiO₄ | Hexagonal | — | 2.54 g/cm³ |
| Kalsilite | KAlSiO₄ | Hexagonal | — | 2.54 g/cm³ |
| Kalyuzhnyite-(Ce) | NaKCaSrCeTi(Si₈O₂₁)OF(H₂O)₃ | Monoclinic | — | — |
| Kamaishilite | Ca₂(Al₂SiO₆)(OH)₂ | Tetragonal | — | — |
| Kamenevite | K₂TiSi₃O₉*H₂O | Orthorhombic | — | — |
| Kampfite | Ba₁₂(Si₁₁Al₅)O₃₁(CO₃)₈Cl₅ | Monoclinic | 3.0 | — |
| Kanemite | HNaSi₂O₅ * 3H₂O | — | — | — |
| Kannanite | Ca₄Al₄(AlMg)(VO₄)(SiO₄)₂(Si₃O₁₀)(OH)₆ | Orthorhombic | — | — |
| Kanoite | Mn²⁺(Mg,Mn²⁺)Si₂O₆ | Monoclinic | — | — |
| Kanonaite | Mn³⁺AlOSiO₄ | — | — | — |
| Kaolinite | Al₂Si₂O₅(OH)₄ | Triclinic | 1.0 | — |
| Kapitsaite-(Y) | (Ba,K,Pb)₄(Y,Ca)₂Si₈(B,Si)₄O₂₈F | Triclinic | — | — |
| Kapustinite | Na₅(Na,Mn²⁺)<₁Zr(H₂Si₆O₁₈) | Monoclinic | — | — |
| Karnasurtite-(Ce) | (Ce,La,Th)(Ti,Nb)(Al,Fe)(Si₂O₇)(OH)₄ * 3H₂O | Amorphous | — | — |
| Karpinskite | (Mg,Ni)₂Si₂O₅(OH)₂ (?) | — | — | — |
| Kasatkinite | Ba₂Ca₈B₅Si₈O₃₂(OH)₃·6H₂O | Monoclinic | — | — |
| Kasolite | Pb(UO₂)SiO₄·H₂O | Monoclinic | — | — |
| Katanite | Ba₃NbFe₃Si₂O₁₄ | Trigonal | — | — |
| Katayamalite | KLi₃Ca₇Ti₂(SiO₃)₁₂(OH)₂ | Monoclinic | — | — |
| Katoite | Ca₃Al₂(SiO₄)₃-x(OH)₄x (x = ₁.₅-₃) | Cubic | — | — |
| Katophorite | Na(NaCa)(Mg₄Al)(Si₇Al)O₂₂(OH)₂ | Monoclinic | — | — |
| Katoptrite | (Mn²⁺,Mg)₁₃(Al,Fe³⁺)₄Sb₅+₂(SiO₄)₂O₂₀ | — | — | — |
| Kayupovaite | Na₂Mn₁₀[(Si₁₄Al₂)O₃₈(OH)₈]·₇H₂O | Monoclinic | — | — |
| Kazakovite | Na₆Mn²⁺Ti(Si₆O₁₈) | Trigonal | — | — |
| Kazanskyite | Ba☐TiNbNa₃Ti(Si₂O₇)₂O₂(OH)₂(H₂O)₂ | Triclinic | — | — |
| Keatite | SiO₂ | Tetragonal | — | 2.63 g/cm³ |
| Kegelite | Pb₄Al₂Si₄O₁₀(SO₄)(CO₃)₂(OH)₄ | — | — | — |
| Keiviite-(Y) | Y₂Si₂O₇ | Monoclinic | — | 4.26 g/cm³ |
| Keiviite-(Yb) | Yb₂Si₂O₇ | Monoclinic | — | 6.24 g/cm³ |
| Keldyshite | (Na,H)₂ZrSi₂O₇ | Triclinic | — | — |
| Kellyite | Mn²⁺₂Al(AlSiO₅)(OH)₄ | — | — | — |
| Kenotobermorite | Ca₄Si₆O₁₅(OH)₂(H₂O)₂·3H₂O | — | — | — |
| Kentbrooksite | (Na,REE)₁₅(Ca,REE)₆(Mn²⁺,Fe²⁺)₃Zr₃Nb[Si₂₅O₇₄]F₂ * 2H₂O | Trigonal | — | — |
| Kentrolite | Pb₂Mn³⁺₂(Si₂O₇)O₂ | Orthorhombic | — | — |
| Kenyaite | Na₂Si₂₂O₄₁(OH)₈ * 6H₂O | Monoclinic | — | — |
| Kerimasite | Ca₃Zr₂(SiFe³⁺₂)O₁₂ | Cubic | 7.0 | — |
| Khesinite | Ca₄(Mg₃Fe³⁺₉)O₄(Fe³⁺₉Si₃)O₃₆ | Triclinic | — | — |
| Khibinskite | K₂ZrSi₂O₇ | Monoclinic | — | 3.19 g/cm³ |
| Khmaralite | (Mg,Al,Fe)₁₆[(Al,Si,Be)₁₂O₃₆]O₄ | — | — | — |
| Khomyakovite | Na₁₂Sr₃Ca₆Fe₃Zr₃W[Si₂₅O₇₃](O,OH,H₂O)₃(OH,Cl)₂ | Trigonal | — | — |
| Khristovite-(Ce) | {CaCe}{MgAlMn²⁺}(Si₂O₇)(SiO₄)(OH)F | Monoclinic | — | — |
| Khurayyimite | Ca₇Zn₄(Si₂O₇)₂(OH)₁₀*₄H₂O | Monoclinic | — | — |
| Khvorovite | (Pb,Ba,K)₄Ca₂[Si₈B₂(Si,B)₂O₂₈]F | Triclinic | — | — |
| Kihlmanite-(Ce) | Ce₂TiO₂(SiO₄)(HCO₃)₂(H₂O) | Triclinic | — | — |
| Kilchoanite | Ca₆(SiO₄)(Si₃O₁₀) | Orthorhombic | — | — |
| Killalaite | Ca₆.₄(H₀.₆Si₂O₇)₂(OH)₂ | Monoclinic | — | — |
| Kimzeyite | Ca₃(Zr,Ti)₂((Si,Al,Fe³⁺)O₄)₃ | Cubic | 7.0 | — |
| Kinoite | Ca₂Cu₂Si₃O₁₀·2H₂O | Monoclinic | 2.5 | — |
| Kinoshitalite | (Ba,K)(Mg,Mn²⁺,Al)₃(Al₂Si₂O₁₀)(OH)₂ | — | — | — |
| Kircherite | [Na₅Ca₂K](Si₆Al₆O₂₄)(SO₄)₂·0.33H₂O | Trigonal | — | — |
| Kirchhoffite | CsBSi₂O₆ | Tetragonal | — | 3.46 g/cm³ |
| Kirschsteinite | CaFe²⁺SiO₄ | Orthorhombic | — | — |
| Kittatinnyite | Ca₂Mn₂Mn(SiO₄)₂(OH)₄ * 9H₂O | — | — | — |
| Klöchite | (Fe²⁺Fe³⁺)☐₂KZn₃(Si₁₂O₃₀) | Hexagonal | — | — |
| Knasibfite | K₃Na₄(SiF₆)₃(BF₄) | Orthorhombic | — | — |
| Knorringite | Mg₃Cr₂(SiO₄)₃ | Cubic | — | — |
| Koashvite | Na₆(Ca,Mn)(Ti,Fe)Si₆O₁₈ * H₂O | Orthorhombic | — | — |
| Kochite | Ca₂MnZrNa₃Ti(Si₂O₇)₂(OF)F₂ | Triclinic | — | — |
| Kodamaite | Na₃(Ca₅Na)Si₁₆O₃₆(OH)₄F₂·(14-x)H₂O | Triclinic | — | — |
| Kokchetavite | K(AlSi₃O₈) | Hexagonal | — | 2.46 g/cm³ |
| Kolicite | Mn²⁺₇Zn₄(AsO₄)₂(SiO₄)₂(OH)₈ | — | — | — |
| Kolskyite | (Ca,☐)Ti₂Na₂Ti₂(Si₂O₇)₂O₄(H₂O)₇ | Triclinic | — | — |
| Komarovite | (Ca,Mn)Nb₂[O₃|Si₂O₇] * 3.₅H₂O | — | — | — |
| Komkovite | BaZr[Si₃O₉] * 3H₂O | — | — | — |
| Kopylovite | K₂Ti(Si₃O₉) | Hexagonal | — | — |
| Kornerupine | Mg₃Al₆(Si,Al,B)₅O₂₁(OH) | Orthorhombic | — | — |
| Korobitsynite | (Na,☐)₄Ti₂(Si₄O₁₂)(O,OH)₂·4H₂O | — | — | — |
| Kosmochlor | NaCrSi₂O₆ | Monoclinic | 6.0 | 3.60 g/cm³ |
| Kostylevite | K₂Zr(Si₃O₉) * H₂O | Monoclinic | — | — |
| Kottenheimite | Ca₃Si(SO₄)₂(OH)₆·12H₂O | Hexagonal | — | — |
| Kraisslite | Zn₃(Mn,Mg)₂₅(Fe³⁺,Al)(As³⁺O₃)₂[(Si,As₅+)O₄]₁₀(OH)₁₆ | — | — | — |
| Krauskopfite | BaSi₂O₅ * 3H₂O | — | — | — |
| Kreiterite | CsLi₂Fe³⁺(Si₄O₁₀)F₂ | Monoclinic | — | — |
| Krinovite | Na₂Mg₄Cr³⁺₂(Si₆O₁₈)O₂ | — | — | — |
| Kristiansenite | Ca₂ScSn(Si₂O₇)(Si₂O₆OH) | Triclinic | — | — |
| Krásnoite | Ca₃Al₇.₇Si₃P₄O₂₂.₉(OH)₁₃.₃F₂·8H₂O | Trigonal | — | — |