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Minerals containing calcium
1,411 minerals
Calcium — element
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Johachidolite | CaAlB₃O₇ | Orthorhombic | — | — |
| Johannsenite | CaMn²⁺Si₂O₆ | Monoclinic | 6.0 | — |
| Johnbaumite | Ca₅(AsO₄)₃OH | Hexagonal | 4.5 | — |
| Johnsenite-(Ce) | Na₁₂Ce₃Ca₆Mn₃Zr₃WSi₂₅O₇₃(CO₃)(OH)₂ | Trigonal | — | — |
| Johnsomervilleite | Na₁₀Ca₆Mg₁₈Fe²⁺₂₅(PO₄)₃₆ | Trigonal | — | — |
| Joteite | Ca₂CuAl[AsO₄][AsO₃(OH)]₂(OH)₂·5H₂O | Triclinic | — | — |
| Jouravskite | Ca₃Mn₄+(SO₄)(CO₃)(OH)₆·12H₂O | Hexagonal | — | — |
| Juanite | Ca₁₀Mg₄Al₂Si₁₁O₃₉·4H₂O or near | — | — | — |
| Julgoldite-(Fe2+) | Ca₂Fe²⁺Fe³⁺₂(Si₂O₇)(SiO₄)(OH)₂·H₂O | Monoclinic | — | — |
| Julgoldite-(Mg) | Ca₂MgFe³⁺₂(Si₂O₇)(SiO₄)(OH)₂·H₂O | Monoclinic | — | — |
| Jungite | Ca₂Zn₄Fe³⁺₈(PO₄)₉(OH)₉·16H₂O | Orthorhombic | 1.0 | — |
| Junitoite | CaZn₂Si₂O₇·H₂O | Orthorhombic | 4.5 | — |
| Jusite | Na₂Ca₁₅Al₄Si₁₆O₅₄·17H₂O | — | — | — |
| Kaersutite | NaCa₂(Mg₃AlTi)(Si₆Al₂)O₂₂O₂ | Monoclinic | — | — |
| Kainosite-(Y) | Ca₂Y₂(SiO₃)₄(CO₃)·H₂O | — | — | — |
| Kalyuzhnyite-(Ce) | NaKCaSrCeTi(Si₈O₂₁)OF(H₂O)₃ | Monoclinic | — | — |
| Kamaishilite | Ca₂(Al₂SiO₆)(OH)₂ | Tetragonal | — | — |
| Kamphaugite-(Y) | Ca(Y,REE)(CO₃)₂(OH) * H₂O | Tetragonal | — | — |
| Kangite | (Sc,Ti,Al,Zr,Mg,Ca,☐)₂O₃ | Cubic | — | — |
| Kannanite | Ca₄Al₄(AlMg)(VO₄)(SiO₄)₂(Si₃O₁₀)(OH)₆ | Orthorhombic | — | — |
| Kapitsaite-(Y) | (Ba,K,Pb)₄(Y,Ca)₂Si₈(B,Si)₄O₂₈F | Triclinic | — | — |
| Kapundaite | CaNaFe³⁺₄(PO₄)₄(OH)₃·5H₂O | Triclinic | — | — |
| Karasugite | SrCa[Al(F,OH)₇] | Monoclinic | — | — |
| Karlleuite | Ca₂MnO₄ | Tetragonal | — | — |
| Karwowskiite | Ca₉Mg(Fe²⁺₀,₅◻₀,₅)(PO₄)₇ | Trigonal | — | 3.08 g/cm³ |
| Kasatkinite | Ba₂Ca₈B₅Si₈O₃₂(OH)₃·6H₂O | Monoclinic | — | — |
| Kassite | CaTi₂O₄(OH)₂ | Monoclinic | 5.0 | 3.23 g/cm³ |
| 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 | — | — |
| Keckite | CaMn(Fe³⁺,Mn)₂Fe³⁺₂(PO₄)₄(OH)₃(H₂O)₇ | Monoclinic | — | — |
| Kegginite | Pb₃Ca₃[AsV₁₂O₄₀(VO)]*₂₀H₂O | Trigonal | — | — |
| Kenotobermorite | Ca₄Si₆O₁₅(OH)₂(H₂O)₂·3H₂O | — | — | — |
| Kentbrooksite | (Na,REE)₁₅(Ca,REE)₆(Mn²⁺,Fe²⁺)₃Zr₃Nb[Si₂₅O₇₄]F₂ * 2H₂O | Trigonal | — | — |
| Kerimasite | Ca₃Zr₂(SiFe³⁺₂)O₁₂ | Cubic | 7.0 | — |
| Kettnerite | CaBiCO₃OF | Orthorhombic | — | — |
| Khanneshite | (Na,Ca)₃(Ba,Sr,Ce,Ca)₃(CO₃)₅ | Hexagonal | — | — |
| Khesinite | Ca₄(Mg₃Fe³⁺₉)O₄(Fe³⁺₉Si₃)O₃₆ | Triclinic | — | — |
| 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 | — | — |
| Kilchoanite | Ca₆(SiO₄)(Si₃O₁₀) | Orthorhombic | — | — |
| Killalaite | Ca₆.₄(H₀.₆Si₂O₇)₂(OH)₂ | Monoclinic | — | — |
| Kimuraite-(Y) | CaY₂(CO₃)₄·6H₂O | Orthorhombic | — | — |
| Kimzeyite | Ca₃(Zr,Ti)₂((Si,Al,Fe³⁺)O₄)₃ | Cubic | 7.0 | — |
| Kingsmountite | Ca₄(Fe²⁺,Mn²⁺)Al₄(PO₄)₆(OH)₄ * 12H₂O | Triclinic | — | — |
| Kinoite | Ca₂Cu₂Si₃O₁₀·2H₂O | Monoclinic | 2.5 | — |
| Kircherite | [Na₅Ca₂K](Si₆Al₆O₂₄)(SO₄)₂·0.33H₂O | Trigonal | — | — |
| Kirschsteinite | CaFe²⁺SiO₄ | Orthorhombic | — | — |
| Kittatinnyite | Ca₂Mn₂Mn(SiO₄)₂(OH)₄ * 9H₂O | — | — | — |
| 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 | — | — |
| Kokinosite | Na₂Ca₂(V₁₀O₂₈)·24H₂O | Triclinic | — | — |
| Koksharovite | CaMg₂Fe³⁺₄(VO₄)₆ | Triclinic | 4.5 | — |
| Koktaite | (NH₄)₂Ca(SO₄)₂ * H₂O | Monoclinic | — | — |
| Kolfanite | Ca₂Fe³⁺₃O₂(AsO₄)₃·2H₂O | Monoclinic | — | — |
| Kolskyite | (Ca,☐)Ti₂Na₂Ti₂(Si₂O₇)₂O₄(H₂O)₇ | Triclinic | — | — |
| Komarovite | (Ca,Mn)Nb₂[O₃|Si₂O₇] * 3.₅H₂O | — | — | — |
| Konzettite | CaMn⁴⁺Te₆⁺O₆ | Trigonal | — | — |
| Korzhinskite | Ca(B₂O₄) * H₂O | Monoclinic | — | — |
| Kottenheimite | Ca₃Si(SO₄)₂(OH)₆·12H₂O | Hexagonal | — | — |
| Krasheninnikovite | KNa₂CaMg(SO₄)₃F | Hexagonal | — | — |
| Kristiansenite | Ca₂ScSn(Si₂O₇)(Si₂O₆OH) | Triclinic | — | — |
| Krotite | CaAl₂O₄ | Monoclinic | 6.5 | — |
| Kruijenite | Ca₄Al₄(SO₄)F₂(OH)₁₆*₂H₂O | Tetragonal | 3.0 | — |
| Krásnoite | Ca₃Al₇.₇Si₃P₄O₂₂.₉(OH)₁₃.₃F₂·8H₂O | Trigonal | — | — |
| Kumtyubeite | Ca₅(SiO₄)₂F₂ | Monoclinic | — | — |
| Kuratite | Ca₂(Fe²⁺₅Ti)O₂[Si₄Al₂O₁₈] | Triclinic | — | — |
| Kurchatovite | Ca(Mg,Mn²⁺)[B₂O₅] | Orthorhombic | — | — |
| Kurgantaite | CaSr[B₅O₉]Cl·H₂O | Triclinic | — | — |
| Kushiroite | CaAlAlSiO₆ | Monoclinic | — | — |
| Kutnohorite | CaMn²⁺(CO₃)₂ | Trigonal | — | — |
| Kuzelite | Ca₄Al₂(OH)₁₂[SO₄] * 6H₂O | — | — | — |
| Kvanefjeldite | Na₄(Ca,Mn)(Si₃O₇)₂(OH)₂ | Orthorhombic | — | — |
| Laachite | (Ca,Mn)₂Zr₂Nb₂TiFeO₁₄ | Monoclinic | — | — |
| Labyrinthite | (Na,K,Sr)₃₅Ca₁₂Fe₃Zr₆TiSi₅₁O₁₄₄(O,OH,H₂O)₉Cl₃ | Trigonal | — | — |
| Lagalyite | Ca₂xMn₁-xO₂*₁.₅-₂H₂O | Monoclinic | — | — |
| Lakargiite | CaZrO₃ | Orthorhombic | — | 4.60 g/cm³ |