A–Z index
K (328)
- K2 Jasper Rock
- Kaatialaite Fe(H₂AsO₄)₃ * 5H₂O IMA mineral species
- Kabalovite IMA mineral species
- Kadyrelite [(Hg¹⁺)₂]₃OBr₃(OH) IMA mineral species
- Kaersutite NaCa₂(Mg₃AlTi)(Si₆Al₂)O₂₂O₂ IMA mineral species
- Kafehydrocyanite IMA mineral species
- Kahlenbergite KAl₁₁O₁₇ IMA mineral species
- Kahlerite Fe(UO₂)₂(AsO₄)₂ * 12H₂O IMA mineral species
- Kainite KMg(SO₄)Cl·3H₂O IMA mineral species
- Kainosite-(Y) Ca₂Y₂(SiO₃)₄(CO₃)·H₂O IMA mineral species
- Kainotropite Cu₄Fe³⁺O₂(V₂O₇)(VO₄) IMA mineral species
- Kaitianite Ti³⁺₂Ti₄+O₅ IMA mineral species
- Kalborsite K₆Al₄BSi₆O₂₀(OH)₄Cl IMA mineral species
- Kalgoorlieite As₂Te₃ IMA mineral species
- Kaliborite HKMg₂B₁₂O₁₆(OH)₁₀·4H₂O IMA mineral species
- Kalicinite KHCO₃ IMA mineral species
- Kalifersite (K,Na)₅Fe³⁺₇Si₂₀O₅₀(OH)₆ * 12H₂O IMA mineral species
- Kalininite ZnCr₂S₄ IMA mineral species
- Kalinite KAl(SO₄)₂·11H₂O IMA mineral species
- Kaliochalcite KCu₂(SO₄)₂[(OH)(H₂O)] IMA mineral species
- Kaliophilite KAlSiO₄ IMA mineral species
- Kalistrontite K₂Sr(SO₄)₂ IMA mineral species
- Kalithallite K₃Tl³⁺Cl₆*₂H₂O IMA mineral species
- Kalsilite KAlSiO₄ IMA mineral species
- Kalungaite PdAsSe IMA mineral species
- Kalyuzhnyite-(Ce) NaKCaSrCeTi(Si₈O₂₁)OF(H₂O)₃ IMA mineral species
- Kamacite Mineral variety
- Kamaishilite Ca₂(Al₂SiO₆)(OH)₂ IMA mineral species
- Kamarizaite Fe³⁺₃(AsO₄)₂(OH)₃·3H₂O IMA mineral species
- Kambaba Jasper Rock
- Kambaldaite NaNi₄(CO₃)₃(OH)₃ * 3H₂O IMA mineral species
- Kamchatkite KCu₃(SO₄)₂OCl IMA mineral species
- Kamenevite K₂TiSi₃O₉*H₂O IMA mineral species
- Kamiokite Fe₂Mo₃O₈ IMA mineral species
- Kamitugaite PbAl[(UO₂)₅(PO₄)₂.₃₈(AsO₄)₀.₆₂O₂(OH)₂] * 1₁.₅H₂O IMA mineral species
- Kamotoite-(Y) Y₂(UO₂)₄(CO₃)₃O₄ * 14H₂O IMA mineral species
- Kampelite Ba₆Mg₃Sc₈(PO₄)₁₂(OH)₆*₇H₂O IMA mineral species
- Kampfite Ba₁₂(Si₁₁Al₅)O₃₁(CO₃)₈Cl₅ IMA mineral species
- Kamphaugite-(Y) Ca(Y,REE)(CO₃)₂(OH) * H₂O IMA mineral species
- Kanatzidisite (SbBiS₃)₂Te₂ IMA mineral species
- Kanemite HNaSi₂O₅ * 3H₂O IMA mineral species
- Kangite (Sc,Ti,Al,Zr,Mg,Ca,☐)₂O₃ IMA mineral species
- Kangjinlaite IMA mineral species
- Kaňkite IMA mineral species
- Kannanite Ca₄Al₄(AlMg)(VO₄)(SiO₄)₂(Si₃O₁₀)(OH)₆ IMA mineral species
- Kanoite Mn²⁺(Mg,Mn²⁺)Si₂O₆ IMA mineral species
- Kanonaite Mn³⁺AlOSiO₄ IMA mineral species
- Kanonerovite Na₃Mn²⁺(P₃O₁₀) * 12H₂O IMA mineral species
- Kantorite K₂NaMg(SO₄)₂F IMA mineral species
- Kaolinite Al₂Si₂O₅(OH)₄ IMA mineral species
- Kapellasite Cu₃Zn(OH)₆Cl₂ IMA mineral species
- Kapitsaite-(Y) (Ba,K,Pb)₄(Y,Ca)₂Si₈(B,Si)₄O₂₈F IMA mineral species
- Kapundaite CaNaFe³⁺₄(PO₄)₄(OH)₃·5H₂O IMA mineral species
- Kapustinite Na₅(Na,Mn²⁺)<₁Zr(H₂Si₆O₁₈) IMA mineral species
- Karasugite SrCa[Al(F,OH)₇] IMA mineral species
- Karchevskyite Mg₁₈Al₉(OH)₅₄Sr₂(CO₃)₉(H₂O)₆(H₃O)₅ IMA mineral species
- Karelianite V³⁺₂O₃ IMA mineral species
- Karenwebberite NaFe²⁺(PO₄) IMA mineral species
- Karibibite Fe³⁺₃(As³⁺O₂)₄(As³⁺₂O₅)(OH) IMA mineral species
- Karlditmarite IMA mineral species
- Karlite Mg₇(BO₃)₃(OH,Cl)₅ IMA mineral species
- Karlleuite Ca₂MnO₄ IMA mineral species
- Karlseifertite Pb(Ga₂Ge)(AsO₄)₂(OH)₆ IMA mineral species
- Karnasurtite-(Ce) (Ce,La,Th)(Ti,Nb)(Al,Fe)(Si₂O₇)(OH)₄ * 3H₂O IMA mineral species
- Karpenkoite Co₃(V₂O₇)(OH)₂·2H₂O IMA mineral species
- Karpinskite (Mg,Ni)₂Si₂O₅(OH)₂ (?) IMA mineral species
- Karpovite Tl₂VO(SO₄)₂(H₂O) IMA mineral species
- Karupmøllerite-Ca IMA mineral species
- Karwowskiite Ca₉Mg(Fe²⁺₀,₅◻₀,₅)(PO₄)₇ IMA mineral species
- Kasatkinite Ba₂Ca₈B₅Si₈O₃₂(OH)₃·6H₂O IMA mineral species
- Kashinite (Ir,Rh)₂S₃ IMA mineral species
- Kaskasite (Mo,Nb)S₂·(Mg₁₋ₓAlₓ)(OH)₂₊ₓ IMA mineral species
- Kasolite Pb(UO₂)SiO₄·H₂O IMA mineral species
- Kassite CaTi₂O₄(OH)₂ IMA mineral species
- Kastningite (Mn²⁺,Fe²⁺,Mg)Al₂(PO₄)₂(OH)₂·8H₂O IMA mineral species
- Katanite Ba₃NbFe₃Si₂O₁₄ IMA mineral species
- Katayamalite KLi₃Ca₇Ti₂(SiO₃)₁₂(OH)₂ IMA mineral species
- Katerinopoulosite (NH₄)₂Zn(SO₄)₂*₆H₂O IMA mineral species
- Katiarsite KTiO(AsO₄) IMA mineral species
- Katoite Ca₃Al₂(SiO₄)₃-x(OH)₄x (x = ₁.₅-₃) IMA mineral species
- Katophorite Na(NaCa)(Mg₄Al)(Si₇Al)O₂₂(OH)₂ IMA mineral species
- Katoptrite (Mn²⁺,Mg)₁₃(Al,Fe³⁺)₄Sb₅+₂(SiO₄)₂O₂₀ IMA mineral species
- Katsarosite Zn(C₂O₄)⋅2H₂O IMA mineral species
- Kawazulite Bi₂Te₂Se IMA mineral species
- Kayrobertsonite [MnAl₂(PO₄)₂(OH)₂(H₂O)₄]*₂H₂O IMA mineral species
- Kayupovaite Na₂Mn₁₀[(Si₁₄Al₂)O₃₈(OH)₈]·₇H₂O IMA mineral species
- Kazakhstanite Fe³⁺₅V₄+₃V₅+₁₂O₃₉(OH)₉ * 9H₂O IMA mineral species
- Kazakovite Na₆Mn²⁺Ti(Si₆O₁₈) IMA mineral species
- Kazanskyite Ba☐TiNbNa₃Ti(Si₂O₇)₂O₂(OH)₂(H₂O)₂ IMA mineral species
- Kaznakhtite IMA mineral species
- Keatite SiO₂ IMA mineral species
- Keckite CaMn(Fe³⁺,Mn)₂Fe³⁺₂(PO₄)₄(OH)₃(H₂O)₇ IMA mineral species
- Kegelite Pb₄Al₂Si₄O₁₀(SO₄)(CO₃)₂(OH)₄ IMA mineral species
- Kegginite Pb₃Ca₃[AsV₁₂O₄₀(VO)]*₂₀H₂O IMA mineral species
- Keilhauite Mineral variety
- Keilite FeS IMA mineral species
- Keithconnite Pd₂₀Te₇ IMA mineral species
- Keiviite-(Y) Y₂Si₂O₇ IMA mineral species
- Keiviite-(Yb) Yb₂Si₂O₇ IMA mineral species
- Keldyshite (Na,H)₂ZrSi₂O₇ IMA mineral species
- Kellyite Mn²⁺₂Al(AlSiO₅)(OH)₄ IMA mineral species
- Kelyanite (Hg+₂)₆Sb³⁺BrCl₂O₆ IMA mineral species
- Kemmlitzite SrAl₃(AsO₄)(SO₄)(OH)₆ IMA mineral species
- Kempite Mn²⁺₂Cl(OH)₃ IMA mineral species
- Kenhsuite Hg²⁺₃S₂Cl₂ IMA mineral species
- Kenngottite Mn²⁺₃Fe³⁺₄(PO₄)₄(OH)₆(H₂O)₂ IMA mineral species
- Kennygayite IMA mineral species
- Kenoargentotennantite-(Fe) IMA mineral species
- Kenoargentotetrahedrite-(Fe) Ag₆(Cu₄Fe₂)Sb₄S₁₂☐ IMA mineral species
- Kenoargentotetrahedrite-(Zn) [Ag₆]⁴⁺(Cu₄Zn₂)Sb₄S₁₂◻ IMA mineral species
- Kenomicrolite ◻₂Ta₂[O₄(OH)₂]◻ IMA mineral species
- Kenoplumbomicrolite (Pb,☐)₂Ta₂O₆(☐,OH,O) IMA mineral species
- Kenorozhdestvenskayaite-(Fe) IMA mineral species
- Kenotobermorite Ca₄Si₆O₁₅(OH)₂(H₂O)₂·3H₂O IMA mineral species
- Kentbrooksite (Na,REE)₁₅(Ca,REE)₆(Mn²⁺,Fe²⁺)₃Zr₃Nb[Si₂₅O₇₄]F₂ * 2H₂O IMA mineral species
- Kentrolite Pb₂Mn³⁺₂(Si₂O₇)O₂ IMA mineral species
- Kenyaite Na₂Si₂₂O₄₁(OH)₈ * 6H₂O IMA mineral species
- Keokuk Geode Geode / nodule
- Keplerite IMA mineral species
- Kerimasite Ca₃Zr₂(SiFe³⁺₂)O₁₂ IMA mineral species
- Kermesite Sb₂OS₂ IMA mineral species
- Kernite Na₂B₄O₆(OH)₂·3H₂O IMA mineral species
- Kernowite IMA mineral species
- Kerolite Mineral variety
- Kesebolite-(Ce) IMA mineral species
- Kësterite Cu₂ZnSnS₄ IMA mineral species
- Kettnerite CaBiCO₃OF IMA mineral species
- Keutschite Cu₂AgAsS₄ IMA mineral species
- Keyite Cu²⁺₃Zn₄Cd₂(AsO₄)₆ * 2H₂O IMA mineral species
- Keystoneite Mg₀.₅NiFe³⁺(Te⁴⁺O₃)₃·4.5H₂O IMA mineral species
- Khademite AlSO₄F·5H₂O IMA mineral species
- Khaidarkanite Cu₄Al₃(OH)₁₄F₃·2H₂O IMA mineral species
- Khamrabaevite TiC IMA mineral species
- Khanneshite (Na,Ca)₃(Ba,Sr,Ce,Ca)₃(CO₃)₅ IMA mineral species
- Kharaelakhite (Cu,Pt,Pb,Fe,Ni)₉S₈ IMA mineral species
- Khatyrkite (Cu,Zn)Al₂ IMA mineral species
- Khesinite Ca₄(Mg₃Fe³⁺₉)O₄(Fe³⁺₉Si₃)O₃₆ IMA mineral species
- Khibinskite K₂ZrSi₂O₇ IMA mineral species
- Khinite Pb²⁺Cu²⁺₃[Te₆+O₆](OH)₂ IMA mineral species
- Khmaralite (Mg,Al,Fe)₁₆[(Al,Si,Be)₁₂O₃₆]O₄ IMA mineral species
- Khomyakovite Na₁₂Sr₃Ca₆Fe₃Zr₃W[Si₂₅O₇₃](O,OH,H₂O)₃(OH,Cl)₂ IMA mineral species
- Khorixasite (Bi₀.₆₇☐₀.₃₃)Cu(VO₄)(OH) IMA mineral species
- Khrenovite Na₃Fe³⁺₂(AsO₄)₃ IMA mineral species
- Khristovite-(Ce) {CaCe}{MgAlMn²⁺}(Si₂O₇)(SiO₄)(OH)F IMA mineral species
- Khurayyimite Ca₇Zn₄(Si₂O₇)₂(OH)₁₀*₄H₂O IMA mineral species
- Khvorovite (Pb,Ba,K)₄Ca₂[Si₈B₂(Si,B)₂O₂₈]F IMA mineral species
- Kiddcreekite Cu₆WSnS₈ IMA mineral species
- Kidodite BaMg₂Fe₁₆O₂₇ IMA mineral species
- Kidwellite NaFe³⁺₉₊ₓ(PO₄)₆(OH)₁₁·3H₂O (x ≈ 0.33) IMA mineral species
- Kieftite CoSb₃ IMA mineral species
- Kieserite Mg(SO₄)(H₂O) IMA mineral species
- Kihlmanite-(Ce) Ce₂TiO₂(SiO₄)(HCO₃)₂(H₂O) IMA mineral species
- Kilchoanite Ca₆(SiO₄)(Si₃O₁₀) IMA mineral species
- Killalaite Ca₆.₄(H₀.₆Si₂O₇)₂(OH)₂ IMA mineral species
- Kimrobinsonite (Ta,Nb)(OH)₅-₂x(O,CO₃)x ; x near ₁.₂ IMA mineral species
- Kimuraite-(Y) CaY₂(CO₃)₄·6H₂O IMA mineral species
- Kimzeyite Ca₃(Zr,Ti)₂((Si,Al,Fe³⁺)O₄)₃ IMA mineral species
- Kingite Al₃(PO₄)₂F₂(OH) · 7H₂O IMA mineral species
- Kingsgateite IMA mineral species
- Kingsmountite Ca₄(Fe²⁺,Mn²⁺)Al₄(PO₄)₆(OH)₄ * 12H₂O IMA mineral species
- Kingstonite (Rh,Ir,Pt)₃S₄ IMA mineral species
- Kinichilite Mg₀.₅Mn²⁺Fe³⁺(Te⁴⁺O₃)₃·4.5H₂O IMA mineral species
- Kinoite Ca₂Cu₂Si₃O₁₀·2H₂O IMA mineral species
- Kinoshitalite (Ba,K)(Mg,Mn²⁺,Al)₃(Al₂Si₂O₁₀)(OH)₂ IMA mineral species
- Kintoreite PbFe₃(PO₄)(PO₃OH)(OH)₆ IMA mineral species
- Kipushite (Cu,Zn)₅Zn(PO₄)₂(OH)₆ * H₂O IMA mineral species
- Kircherite [Na₅Ca₂K](Si₆Al₆O₂₄)(SO₄)₂·0.33H₂O IMA mineral species
- Kirchhoffite CsBSi₂O₆ IMA mineral species
- Kirkiite Pb₁₀Bi₃As₃S₁₉ IMA mineral species
- Kirschsteinite CaFe²⁺SiO₄ IMA mineral species
- Kiryuite NaMnAl(PO₄)F₃ IMA mineral species
- Kishonite IMA mineral species
- Kitagohaite Pt₇Cu IMA mineral species
- Kitkaite NiTeSe IMA mineral species
- Kittatinnyite Ca₂Mn₂Mn(SiO₄)₂(OH)₄ * 9H₂O IMA mineral species
- Kladnoite C₆H₄(CO)₂NH IMA mineral species
- Klajite MnCu₄(AsO₄)₂(AsO₃OH)₂·9H₂O IMA mineral species
- Klaprothite Na₆(UO₂)(SO₄)₄·4H₂O IMA mineral species
- Klebelsbergite Sb₄O₄(SO₄)(OH)₂ IMA mineral species
- Kleberite FeTi₈O₁₁(OH)₅ IMA mineral species
- Kleemanite ZnAl₂(PO₄)₂(OH)₂·3H₂O IMA mineral species
- Kleinite (Hg₂N)(Cl,SO₄)·nH₂O IMA mineral species
- Klöchite (Fe²⁺Fe³⁺)☐₂KZn₃(Si₁₂O₃₀) IMA mineral species
- Klockmannite CuSe IMA mineral species
- Klyuchevskite K₃Cu₃(Fe³⁺,Al)(SO₄)₄O₂ IMA mineral species
- Knasibfite K₃Na₄(SiF₆)₃(BF₄) IMA mineral species
- Knebelite Mineral variety
- Knorringite Mg₃Cr₂(SiO₄)₃ IMA mineral species
- Koashvite Na₆(Ca,Mn)(Ti,Fe)Si₆O₁₈ * H₂O IMA mineral species
- Kobeite-(Y) (REE,Fe,U)₃ Zr(Ti,Nb)₃ O₁₂ IMA mineral species
- Kobellite Pb₁₁(Cu,Fe)₂(Bi,Sb)₁₅S₃₅ IMA mineral species
- Kobokoboite Al₆(PO₄)₄(OH)₆·11H₂O IMA mineral species
- Kobyashevite Cu₅(SO₄)₂(OH)₆·4H₂O IMA mineral species
- Kochite Ca₂MnZrNa₃Ti(Si₂O₇)₂(OF)F₂ IMA mineral species
- Kochkarite PbBi₄Te₇ IMA mineral species
- Kochsándorite IMA mineral species
- Kodamaite Na₃(Ca₅Na)Si₁₆O₃₆(OH)₄F₂·(14-x)H₂O IMA mineral species
- Koechlinite Bi₂MoO₆ IMA mineral species
- Koenenite Na₄Mg₉Al₄Cl₁₂(OH)₂₂ IMA mineral species
- Kogarkoite Na₃SO₄F IMA mineral species
- Kojonenite Pd₇₋ₓSnTe₂ (0.3≤x≤0.8) IMA mineral species
- Kokchetavite K(AlSi₃O₈) IMA mineral species
- Kokinosite Na₂Ca₂(V₁₀O₂₈)·24H₂O IMA mineral species
- Koksharovite CaMg₂Fe³⁺₄(VO₄)₆ IMA mineral species
- Koktaite (NH₄)₂Ca(SO₄)₂ * H₂O IMA mineral species
- Kolarite PbTeCl₂ IMA mineral species
- Kolbeckite ScPO₄·2H₂O IMA mineral species
- Kolfanite Ca₂Fe³⁺₃O₂(AsO₄)₃ * 2H₂O IMA mineral species
- Kolicite Mn²⁺₇Zn₄(AsO₄)₂(SiO₄)₂(OH)₈ IMA mineral species
- Kolitschite Pb[Zn₀.₅,☐₀.₅]Fe₃(AsO₄)₂(OH)₆ IMA mineral species
- Kollerite (NH₄)₂Fe³⁺(SO₃)₂(OH)*H₂O IMA mineral species
- Kolovratite NixZny(VO₄)₀.₆₇(x+y) * nH₂O IMA mineral species
- Kolskyite (Ca,☐)Ti₂Na₂Ti₂(Si₂O₇)₂O₄(H₂O)₇ IMA mineral species
- Kolwezite CuCo(CO₃)(OH)₂ IMA mineral species
- Kolymite Cu₇Hg₆ IMA mineral species
- Komarovite (Ca,Mn)Nb₂[O₃|Si₂O₇] * 3.₅H₂O IMA mineral species
- Kombatite Pb₁₄(VO₄)₂O₉Cl₄ IMA mineral species
- Komkovite BaZr[Si₃O₉] * 3H₂O IMA mineral species
- Konderite Cu₃Pb(Rh,Pt,Ir)₈S₁₆ IMA mineral species
- Koninckite Fe³⁺PO₄ * 3H₂O IMA mineral species
- Kononovite NaMg(SO₄)F IMA mineral species
- Konyaite Na₂Mg(SO₄)₂ * 5H₂O IMA mineral species
- Konzettite CaMn⁴⁺Te₆⁺O₆ IMA mineral species
- Kopernikite K(Ti₇Cr³⁺)O₁₆ IMA mineral species
- Kopylovite K₂Ti(Si₃O₉) IMA mineral species
- Koragoite (Mn²⁺,Fe³⁺)₃(Nb,Ta,Ti)₂(Nb,Mn)₂(W,Ta)₂O₂₀ IMA mineral species
- Koritnigite Zn(AsO₃OH)·H₂O IMA mineral species
- Kornelite Fe₂(SO₄)₃ * 7H₂O IMA mineral species
- Kornerupine Mg₃Al₆(Si,Al,B)₅O₂₁(OH) IMA mineral species
- Korobitsynite (Na,☐)₄Ti₂(Si₄O₁₂)(O,OH)₂·4H₂O IMA mineral species
- Korshunovskite Mg₂Cl(OH)₃·4H₂O IMA mineral species
- Koryakite NaKMg₂Al₂(SO₄)₆ IMA mineral species
- Korzhinskite Ca(B₂O₄) * H₂O IMA mineral species
- Kosmochlor NaCrSi₂O₆ IMA mineral species
- Kosnarite KZr₂(PO₄)₃ IMA mineral species
- Kostovite AuCuTe₄ IMA mineral species
- Kostylevite K₂Zr(Si₃O₉) * H₂O IMA mineral species
- Kotoite Mg₃(BO₃)₂ IMA mineral species
- Kottenheimite Ca₃Si(SO₄)₂(OH)₆·12H₂O IMA mineral species
- Köttigite Zn₃(AsO₄)₂·8H₂O IMA mineral species
- Kotulskite Pd(Te,Bi) IMA mineral species
- Koutekite Cu₅As₂ IMA mineral species
- Kovdorskite Mg₂PO₄(OH)·3H₂O IMA mineral species
- Kozłowskiite IMA mineral species
- Kozoite-(La) (La,Nd)(CO₃)(OH) IMA mineral species
- Kozoite-(Nd) (Nd,La,Sm,Pr)(CO₃)(OH) IMA mineral species
- Kozyrevskite Cu₄O(AsO₄)₂ IMA mineral species
- Kraisslite Zn₃(Mn,Mg)₂₅(Fe³⁺,Al)(As³⁺O₃)₂[(Si,As₅+)O₄]₁₀(OH)₁₆ IMA mineral species
- Králíkite BaCl₂·2H₂O IMA mineral species
- Krasheninnikovite KNa₂CaMg(SO₄)₃F IMA mineral species
- Krásnoite Ca₃Al₇.₇Si₃P₄O₂₂.₉(OH)₁₃.₃F₂·8H₂O IMA mineral species
- Krasnoshteinite Al₈[B₂O₄(OH)₂](OH)₁₆Cl₄*₇H₂O IMA mineral species
- Krasnovite Ba(Al,Mg)(PO₄,CO₃)(OH)₂ * H₂O IMA mineral species
- Kratochvílite C₁₃H₁₀ IMA mineral species
- Krausite KFe(SO₄)₂ * H₂O IMA mineral species
- Krauskopfite BaSi₂O₅ * 3H₂O IMA mineral species
- Krautite Mn(AsO₃OH)·H₂O IMA mineral species
- Kravtsovite PdAg₂S IMA mineral species
- Kreiterite CsLi₂Fe³⁺(Si₄O₁₀)F₂ IMA mineral species
- Kremersite (NH₄)₂Fe³⁺Cl₅·H₂O IMA mineral species
- Krennerite Au₃AgTe₈ IMA mineral species
- Krettnichite PbMn³⁺₂(VO₄)₂(OH)₂ IMA mineral species
- Kribergite Al₅(PO₄)₃(SO₄)(OH)₄ * 4H₂O IMA mineral species
- Krieselite Al₂(GeO₄)F₂ IMA mineral species
- Krinovite Na₂Mg₄Cr³⁺₂(Si₆O₁₈)O₂ IMA mineral species
- Kristekite Cu₂(H₂O)₄(UO₂)(SeO₃)₃·4H₂O IMA mineral species
- Kristiansenite Ca₂ScSn(Si₂O₇)(Si₂O₆OH) IMA mineral species
- Kristjánite KNa₂H(SO₄)₂ IMA mineral species
- Krivovichevite Pb₃Al(OH)₆SO₄(OH) IMA mineral species
- Kröhnkite Na₂Cu(SO₄)₂·2H₂O IMA mineral species
- Krotite CaAl₂O₄ IMA mineral species
- Kroupaite KPb₀.₅[(UO₂)₈O₄(OH)₁₀]*₁₀H₂O IMA mineral species
- Krügerite IMA mineral species
- Kruijenite Ca₄Al₄(SO₄)F₂(OH)₁₆*₂H₂O IMA mineral species
- Krupičkaite IMA mineral species
- Krupkaite PbCuBi₃S₆ IMA mineral species
- Krut'aite CuSe₂ IMA mineral species
- Krutovite NiAs₂ IMA mineral species
- Kryachkoite (Al,Cu)₆(Fe,Cu) IMA mineral species
- Kryzaite Na₄(MgCr)(PO₄)₃ IMA mineral species
- Kryzhanovskite (Fe³⁺,Mn²⁺)₃(PO₄)₂(OH,H₂O)₃ IMA mineral species
- Ktenasite (Cu,Zn)₅(SO₄)₂(OH)₆·6H₂O IMA mineral species
- Kuannersuite-(Ce) NaCeBa₃(PO₄)₃F₀.₅Cl₀.₅ IMA mineral species
- Kudriavite (Cd,Pb)Bi₂S₄ IMA mineral species
- Kudryavtsevaite Na₃MgFe³⁺Ti₄O₁₂ IMA mineral species
- Kufahrite PtPb IMA mineral species
- Kukharenkoite-(Ce) Ba₂Ce(CO₃)₃F IMA mineral species
- Kukharenkoite-(La) Ba₂(La,Ce,Th)(CO₃)₃F IMA mineral species
- Kukisvumite Na₆ZnTi₄(Si₈O₂₄)O₄ * 4H₂O IMA mineral species
- Kuksite Pb₃Zn₃(PO₄)₂(TeO₆) IMA mineral species
- Kulanite Ba(Fe²⁺,Mn²⁺,Mg)₂(Al,Fe³⁺)₂(PO₄)₃(OH)₃ IMA mineral species
- Kuliginite Fe₃Mg(OH)₆Cl₂ IMA mineral species
- Kuliokite-(Y) Y₄Al(SiO₄)₂(OH)₂F₅ IMA mineral species
- Kulkeite Mg₈Al(AlSi₇O₂₀)(OH)₁₀ IMA mineral species
- Kullerudite NiSe₂ IMA mineral species
- Kumdykolite Na(AlSi₃O₈) IMA mineral species
- Kummerite Mn²⁺Fe³⁺Al(PO₄)₂(OH)₂·8H₂O IMA mineral species
- Kumtyubeite Ca₅(SiO₄)₂F₂ IMA mineral species
- Kunatite CuFe³⁺₂(PO₄)₂(OH)₂·4H₂O IMA mineral species
- Kunzite Mineral variety
- Kupčíkite Cu₃.₄Fe₀.₆Bi₅S₁₀ IMA mineral species
- Kupletskite (K,Na)₃(Mn,Fe)₇Ti₂Si₈O₂₆(OH)₄F IMA mineral species
- Kupletskite-(Cs) Cs₂NaMn²⁺₇Ti₂(Si₄O₁₂)₂O₂(OH)₄F IMA mineral species
- Kuramite Cu₃SnS₄ IMA mineral species
- Kuranakhite PbMn⁴⁺Te⁶⁺O₆ IMA mineral species
- Kuratite Ca₂(Fe²⁺₅Ti)O₂[Si₄Al₂O₁₈] IMA mineral species
- Kurchatovite Ca(Mg,Mn²⁺)[B₂O₅] IMA mineral species
- Kurgantaite CaSr[B₅O₉]Cl·H₂O IMA mineral species
- Kurilite Ag₈Te₃Se IMA mineral species
- Kurnakovite Mg[B₃O₃(OH)₅](H₂O)₄·H₂O IMA mineral species
- Kurumsakite Zn₈Al₈V⁵⁺₂Si₅O₃₅·27H₂O (?) IMA mineral species
- Kusachiite Cu²⁺Bi³⁺₂O₄ IMA mineral species
- Kushiroite CaAlAlSiO₆ IMA mineral species
- Kutinaite Ag₆Cu₁₄As₇ IMA mineral species
- Kutnohorite CaMn²⁺(CO₃)₂ IMA mineral species
- Kuvaevite Ir₅Ni10S16 IMA mineral species
- Kuzelite Ca₄Al₂(OH)₁₂[SO₄] * 6H₂O IMA mineral species
- Kuzmenkoite-Mn K₂MnTi₄(Si₄O₁₂)₂(OH)₄·5-6H₂O IMA mineral species
- Kuzmenkoite-Zn K₂ZnTi₄(Si₄O₁₂)₂(OH)₄·6-8H₂O IMA mineral species
- Kuzminite HgBr IMA mineral species
- Kuznetsovite (Hg+₂)Hg²⁺(AsO₄)Cl IMA mineral species
- Kvačekite NiSbSe IMA mineral species
- Kvanefjeldite Na₄(Ca,Mn)(Si₃O₇)₂(OH)₂ IMA mineral species
- Kyanite Al₂OSiO₄ IMA mineral species
- Kyanoxalite Na₇(Al₅-₆Si₆-₇O₂₄)(C₂O₄)₀.₅-₁.₀·5H₂O IMA mineral species
- Kyawthuite Bi³⁺Sb₅+O₄ IMA mineral species
- Kyrgyzstanite ZnAl₄(SO₄)(OH)₁₂*₃H₂O IMA mineral species
- Kyzylkumite V³⁺Ti₂O₅(OH) IMA mineral species
