Kaatialaite

Kaatialait

Fe³⁺(H₂AsO₄)₃ • 5H₂O

monoclinic

Kadyrelite

Kadirelit

Hg⁺₆H(Br, Cl)₃O₂

cubic

Kaersutite

Kaersutit

NaCa₂[(Mg, Fe²⁺)₄Ti](Si₆Al₂)O₂₂(OH)₂

monoclinic

Kahlerite

Kahlerit

Fe²⁺(UO₂)₂(AsO₄)₂ • 10-12H₂O

tetragonal

Kainite

Kainit

MgSO₄ • KCl • 3H₂O

monoclinic

Kainosite-(Y)

Kainozit-(Y)

Ca₂(Y, Ce)₂Si₄O₁₂(CO₃) • H₂O

orthorhombic

Kalborsite

Kalborszit

K₆BAl₄Si₆O₂₀(OH)₄Cl

tetragonal

Kaliborite

Káliborit

KHMg₂B₁₂O₁₆(OH)₁₀ • 4H₂O

monoclinic

Kalicinite

Kalicinit

KHCO₃

monoclinic

Kalininite

Kalinyinit

ZnCr₂S₄

cubic

Kalinite

Kalinit

KAl(SO₄)₂ • 11H₂O

monoclinic (?)

Kaliophilite

Kaliofilit

KAlSiO₄

hexagonal

Kalipyrochlore

Kálipiroklor

(K, Sr)_2-x(Nb, Ti)₂O₆(O, OH) • nH₂O

cubic

Kalistrontite

Kálistroncit

K₂Sr(SO₄)₂

trigonal

Kalsilite

Kalszilit

KAlSiO₄

hexagonal (?)

Kalungaite

Kalungait

PdAsSe

cubic

Kamacite

Kamacit

(Fe, Ni)

cubic

Kamaishilite

Kamaishilit

Ca₂Al₂SiO₆(OH)₂

tetragonal

Kambaldaite

Kambaldait

NaNi₄(CO₃)₃(OH)₃ • 3H₂O

hexagonal

Kamchatkite

Kamcsatkit

KCu²⁺₃(SO₄)₂OCl

orthorhombic

Kamiokite

Kamiokit

Fe²⁺₂Mo⁴⁺₃O₈

hexagonal

Kamitugaite

Kamitugait

PbAl(UO₂)₅(PO₄, AsO₄)₂(OH)₉ • 9.5H₂O

triclinic

Kamotoite-(Y)

Kamotoit-(Y)

Y₂U⁶⁺₄(CO₃)₃O₁₂ • 14.5H₂O

monoclinic

Kampfite

Kampfit

Ba₆(Si, Al)₈O₁₆(CO₃)₂Cl₂(Cl, H₂O)₂

hexagonal

Kamphaugite-(Y)

Kamphaugit-(Y)

Ca₂(Y, REE)₂(CO₃)₄(OH)₂ • 3H₂O

tetragonal

Kanemite

Kanemit

NaHSi₂O₄(OH)₂ • 2H₂O

orthorhombic

Kaňkite

Kaňkit

Fe³⁺AsO₄ • 3.5H₂O

monoclinic

Kanoite

Kanoit

(Mn²⁺, Mg)₂Si₂O₆

monoclinic

Kanonaite

Kanonait

(Mn³⁺, Al)AlSiO₅

orthorhombic

Kanonerovite

Kanonyerovit

MnNa₃P₃O₁₀ • 12H₂O

monoclinic

Kaolinite

Kaolinit

Al₂Si₂O₅(OH)₄

triclinic

Kapitsaite-(Y)

Kapicait-(Y)

(Ba, K, Pb²⁺, Na)₄(Y, Ca, REE)₂Si₈B₂ (B, Si)₂O₂₈F

triclinic

Kapustinite

Kapusztyinit

Na_5.5Mn_0.25ZrSi₆O₁₆(OH)₂

monoclinic

Karasugite

Karasugit

SrCaAl(F, OH)₇

monoclinic

Karelianite

Karelianit

V₂O₃

trigonal

Karibibite

Karibibit

Fe³⁺₂As³⁺₄(O, OH)₉

orthorhombic

Karlite

Karlit

(Mg, Al)₆(BO₃)₃(OH, Cl)₄

orthorhombic

Karnasurtite-(Ce)

Karnaszurtit-(Ce)

(Ce, La, Th)(Ti, Nb)(Al, Fe³⁺)(Si, P)₂O₇ (OH)₄ • 3H₂O (?)

amorphous

Karpatite

Kárpátit

C₂₄H₁₂

monoclinic

Karpinskite

Karpinszkit

(Mg, Ni)₂Si₂O₅(OH)₂ (?)

monoclinic (?)

Karupmöllerite-Ca

Karupmöllerit-Ca

(Na, Ca, K)₄Ca₂Nb₈(Si₄O₁₂)₄(O, OH)₈ • 14H₂O

monoclinic

Kashinite

Kasinit

(Ir, Rh)₂S₃

orthorhombic

Kasolite

Kasolit

Pb(UO₂)SiO₄ • H₂O

monoclinic

Kassite

Kassit

CaTi₂O₄(OH)₂

orthorhombic

Kastningite

Kastningit

(Mn²⁺, Fe²⁺)Al₂(PO₄)₂(OH)₂ • 8H₂O

triclinic

Katoite

Katoit

Ca₃Al₂(SiO₄)_3-x(OH)_4x (x = 1.5-3.0)

cubic

Katophorite

Katoforit

Na[NaCa][(Fe²⁺, Mg)₄Al](Si₇Al)O₂₂ (OH)₂

monoclinic

Katoptrite

Katoptrit

(Mn²⁺, Mg)₁₃(Al, Fe³⁺)₄Sb⁵⁺₂Si₂O₂₈

monoclinic

Kawazulite

Kawazulit

Bi₂Te₂Se

trigonal

Kazakhstanite

Kazahsztánit

Fe³⁺₅V⁴⁺₃V⁵⁺₁₂O₃₉(OH)₉ • 9H₂O

monoclinic

Kazakovite

Kazakovit

Na₆Mn²⁺TiSi₆O₁₈

trigonal

Keckite

Keckit

Ca(Mn²⁺, Zn)₂Fe³⁺₃(PO₄)₄(OH)₃ • 2H₂O

monoclinic

Kegelite

Kegelit

Pb₈Al₄Si₈O₂₀(SO₄)₂(CO₃)₄(OH)₈

monoclinic

Keilite

Keilit

(Fe, Mg)S

cubic

Keithconnite

Keithconnit

Pd_3-xTe (x = 0.14 – 0.43)

trigonal

Keiviite-(Y)

Kejviit-(Y)

(Y, Yb)₂Si₂O₇

monoclinic

Keiviite-(Yb)

Kejviit-(Yb)

(Yb, Y)₂Si₂O₇

monoclinic

Keldyshite

Keldisit

Na₂ZrSi₂O₇ • nH₂O

triclinic

Kellyite

Kellyit

(Mn²⁺, Mg, Al)₃(Si, Al)₂O₅(OH)₄

hexagonal

Kelyanite

Keljanit

Hg₃₆Sb₃O₂₈(Cl, Br)₉

monoclinic

Kemmlitzite

Kemmlitzit

(Sr, Ce)Al₃(AsO₄)(SO₄)(OH)₆

trigonal

Kempite

Kempit

Mn²⁺₂Cl(OH)₃

orthorhombic

Kenhsuite

Kenhsuit

g-Hg₃S₂Cl₂

orthorhombic

Kentbrooksite

Kentbrooksit

(Na, REE)₁₅(Ca, REE)₆Mn²⁺₃Zr₃NbSi₂₅ O₇₄F₂

hexagonal

Kentrolite

Kentrolit

Pb₂Mn³⁺₂O₂Si₂O₇

orthorhombic

Kenyaite

Kenyait

Na₂Si₂₂O₄₁(OH)₈ • 6H₂O

monoclinic (?)

Kermesite

Kermezit

Sb₂S₂O

triclinic

Kernite

Kernit

Na₂B₄O₆(OH)₂ • 3H₂O

monoclinic

Kësterite

Kjoszterit

Cu₂(Zn, Fe)SnS₄

tetragonal

Kettnerite

Kettnerit

CaBi(CO₃)OF

tetragonal

Keyite

Keyit

Cu₃(Zn, Cu)₄Cd₂(AsO₄)₆ • 2H₂O

monoclinic

Keystoneite

Keystoneit

Mg_0.5Ni²⁺Fe³⁺(TeO₃)₃ • 4.5H₂O

hexagonal

Khademite

Khademit

Al(SO₄)F • 5H₂O

orthorhombic

Khaidarkanite

Haidarkanit

Cu₄Al₃(OH)₁₄F₃ • 2H₂O

monoclinic

Khamrabaevite

Hamrabajevit

(Ti, V, Fe)C

cubic

Khanneshite

Khanneshit

(Na, Ca)₃(Ba, Sr, Ce, Ca)₃(CO₃)₅

hexagonal

Kharaelakhite

Haraelahit

(Pt, Cu, Pb, Fe, Ni)₉S₈

orthorhombic (?)

Khatyrkite

Hatirkit

(Cu, Zn)Al₂

tetragonal

Khibinskite

Hibinszkit

K₂ZrSi₂O₇

monoclinic

Khinite

Khinit

PbCu²⁺₃Te⁶⁺O₄(OH)₆

orthorhombic

Khmaralite

Hmaralit

Mg_5.5Al₁₄Fe²⁺₂Si₅Be_1.5O₄₀

monoclinic

Khomyakovite

Homjakovit

Na₁₂Sr₃Ca₆Fe₃Zr₃WSi₂₅O₇₃(O, OH, H₂O)₃(OH)₂

trigonal

Khristovite-(Ce)

Hrisztovit-(Ce)

(Ca, REE)REE(Mg, Fe²⁺)AlMn²⁺Si₃O₁₁ (OH)(F, O)

monoclinic

Kiddcreekite

Kiddcreekit

Cu₆SnWS₈

cubic

Kidwellite

Kidwellit

NaFe³⁺₉(PO₄)₆(OH)₁₀ • 5H₂O

monoclinic

Kieftite

Kieftit

CoSb₃

cubic

Kieserite

Kieserit

MgSO₄ • H₂O

monoclinic

Kilchoanite

Kilchoanit

Ca₃Si₂O₇

orthorhombic

Killalaite

Killalait

Ca₃Si₂O₇ • H₂O

monoclinic

Kimrobinsonite

Kimrobinsonit

(Ta, Nb)(OH)₃(O, CO₃)

cubic

Kimuraite-(Y)

Kimurait-(Y)

CaY₂(CO₃)₄ • 6H₂O

orthorhombic

Kimzeyite

Kimzeyit

Ca₃(Zr, Ti)₂(Si, Al, Fe³⁺)₃O₁₂

cubic

Kingite

Kingit

Al₃(PO₄)₂(OH, F)₃ • 9H₂O

triclinic

Kingsmountite

Kingsmountit

(Ca, Mn²⁺)₄(Fe²⁺, Mn²⁺)Al₄(PO₄)₆(OH)₄ • 12H₂O

monoclinic

Kingstonite

Kingstonit

(Rh, Ir, Pt)₃S₄

monoclinic

Kinichilite

Kinichilit

Mg_0.5Mn²⁺Fe³⁺(TeO₃)₃ • 4.5H₂O

hexagonal

Kinoite

Kinoit

Ca₂Cu₂Si₃O₈(OH)₄

monoclinic

Kinoshitalite

Kinoshitalit

(Ba, K)(Mg, Mn, Al)₃Si₂Al₂O₁₀(OH)₂

monoclinic

Kintoreite

Kintoreit

PbFe³⁺₃(PO₄)₂(OH, H₂O)₆

trigonal

Kipushite

Kipushit

(Cu, Zn)₆(PO₄)₂(OH)₆ • H₂O

monoclinic

Kirkiite

Kirkiit

Pb₁₀Bi₃As₃S₁₉

orthorhombic or monoclinic

Kirschsteinite

Kirschsteinit

CaFe²⁺SiO₄

orthorhombic

Kitkaite

Kitkait

NiTeSe

trigonal

Kittatinnyite

Kittatinnyit

Ca₄Mn²⁺₂Mn³⁺₄Si₄O₁₆(OH)₈ • 18H₂O

hexagonal

Kladnoite

Kladnoit

C₆H₄(CO)₂NH

monoclinic

Klebelsbergite

Klebelsbergit

Sb³⁺₄O₄(OH)₂(SO₄)

orthorhombic

Kleemanite

Kleemanit

ZnAl₂(PO₄)₂(OH)₂ • 3H₂O

monoclinic

Kleinite

Kleinit

Hg₂N(Cl, SO₄) • nH₂O

hexagonal

Klockmannite

Klockmannit

CuSe

hexagonal

Klyuchevskite

Kljucsevszkit

K₃Cu²⁺₃(Fe³⁺, Al)O₂(SO₄)₄

monoclinic

Knorringite

Knorringit

Mg₃Cr₂(SiO₄)₃

cubic

Koashvite

Koasvit

Na₆(Ca, Mn)(Fe³⁺, Ti)Si₆O₁₈ • H₂O

orthorhombic

Kobeite-(Y)

Kobeit-(Y)

(Y, U)(Ti, Nb)₂(O, OH)₆ (?)

cubic

Kobellite

Kobellit

Pb₂₂Cu₄(Bi, Sb)₃₀S₆₉

orthorhombic

Kochite

Kochit

Na₂(Na, Ca)₄Ca₄(Mn, Ca)₂Zr₂Ti₂(Si₂O₇)₄(O, F)₄F₄

triclinic

Kochkarite

Kocskarit

PbBi₄Te₇

hexagonal

Koechlinite

Koechlinit

Bi₂MoO₆

orthorhombic

Koenenite

Koenenit

Na₄Mg₉Al₄Cl₁₂(OH)₂₂

trigonal

Kogarkoite

Kogarkoit

Na₃(SO₄)F

monoclinic

Kokchetavite

Kokcsetavit

KAlSi₃O₈

hexagonal

Koktaite

Koktait

(NH₄)₂Ca(SO₄)₂ • H₂O

monoclinic

Kolarite

Kolarit

PbTeCl₂

orthorhombic

Kolbeckite

Kolbeckit

ScPO₄ • 2H₂O

monoclinic

Kolfanite

Kolfanit

Ca₂Fe³⁺₃O₂(AsO₄)₃ • 2H₂O

monoclinic

Kolicite

Kolicit

Mn²⁺₇Zn₄(AsO₄)₂(SiO₄)₂(OH)₈

orthorhombic

Kolovratite

Kolovratit

Ni_xZn_y(VO₄)_z • nH₂O

?

Kolwezite

Kolwezit

(Cu²⁺, Co)₂(CO₃)(OH)₂

triclinic

Kolymite

Kolimit

Cu₇Hg₆

cubic

Komarovite

Komarovit

(Ca, Mn)Nb₂(Si₂O₇)(O, F)₃ • 3.5H₂O

orthorhombic

Kombatite

Kombatit

Pb₁₄O₉(VO₄)₂Cl₄

monoclinic

Komkovite

Komkovit

BaZrSi₃O₉ • 3H₂O

trigonal

Konderite

Kongyorit

PbCu₃(Rh, Pt, Ir)₈S₁₆

hexagonal

Koninckite

Koninckit

(Fe³⁺, Al)PO₄ • 3H₂O (?)

tetragonal

Konyaite

Konyait

Na₂Mg(SO₄)₂ • 5H₂O

monoclinic

Koragoite

Koragoit

(Mn, Fe)₃(Nb, Ta, Ti)₃(Nb, Mn)₂(W, Ta)₂O₂₀

monoclinic

Koritnigite

Koritnigit

Zn(AsO₃OH) • H₂O

triclinic

Kornelite

Kornelit

Fe³⁺₂(SO₄)₃ • 7H₂O

monoclinic

Kornerupine

Kornerupin

(Mg, Fe²⁺)₄Al₆(Si, Al, B)₅O₂₁(OH)

orthorhombic

Kornite

Kornit

KNa₂(Mg, Mn³⁺, Fe³⁺, Li)₅Si₈O₂₂(OH)₂

monoclinic

Korobitsynite

Korobicinit

Na_8-xTi₄(Si₄O₁₂)₂(O, OH)₄ • 8H₂O

orthorhombic

Korshunovskite

Korsunovszkit

Mg₂Cl(OH)₃ • 3.5-4.0H₂O

triclinic

Korzhinskite

Korzsinszkit

CaB₂O₄ • H₂O

?

Kosmochlor

Kozmoklor

NaCr³⁺Si₂O₆

monoclinic

Kosnarite

Kosnarit

KZr₂(PO₄)₃

trigonal

Kostovite

Kosztovit

CuAuTe₄

orthorhombic

Kostylevite

Kosztiljevit

K₂ZrSi₃O₉ • H₂O

monoclinic

Kotoite

Kotoit

Mg₃B₂O₆

orthorhombic

Köttigite

Köttigit

Zn₃(AsO₄)₂ • 8H₂O

monoclinic

Kotulskite

Kotulszkit

Pd(Te, Bi)_2-x (x = 0.4)

hexagonal

Koutekite

Koutekit

Cu₅As₂

hexagonal

Kovdorskite

Kovdorszkit

Mg₂(PO₄)(OH) • 3H₂O

monoclinic

Kozoite-(La)

Kozoit-(La)

La(CO₃)(OH)

orthorhombic

Kozoite-(Nd)

Kozoit-(Nd)

Nd(CO₃)(OH)

orthorhombic

Kozulite

Kozulit

NaNa₂[Mn²⁺₄(Fe³⁺, Al)]Si₈O₂₂(OH)₂

monoclinic

Kraisslite

Kraisslit

(Mn²⁺, Mg)₂₄Zn₃Fe³⁺(As³⁺O₃)₂ (As⁵⁺O₄)₃(SiO₄)₆(OH)₁₈

hexagonal

Krasnovite

Krasznovit

Ba(Al, Mg)(PO₄, CO₃)(OH)₂ • H₂O

orthorhombic

Kratochvilite

Kratochvilit

C₁₃H₁₀

orthorhombic

Krausite

Krausit

KFe³⁺(SO₄)₂ • H₂O

monoclinic

Krauskopfite

Krauskopfit

BaSi₂O₄(OH)₂ • 2H₂O

monoclinic

Krautite

Krautit

Mn²⁺(AsO₃OH) • H₂O

monoclinic

Kremersite

Kremersit

(NH₄, K)₂Fe³⁺Cl₅ • H₂O

orthorhombic

Krennerite

Krennerit

AuTe₂

orthorhombic

Krettnichite

Krettnichit

PbMn³⁺₂(VO₄)₂(OH)₂

monoclinic

Kribergite

Kribergit

Al₅(PO₄)₃(SO₄)(OH)₄ • 4H₂O

triclinic

Krinovite

Krinovit

Na₂Mg₄Cr₂Si₆O₂₀

triclinic

Kristiansenite

Kristiansenit

Ca₂ScSn(Si₂O₇)(Si₂O₆OH)

triclinic

Kröhnkite

Kröhnkit

Na₂Cu²⁺(SO₄)₂ • 2H₂O

monoclinic

Krupkaite

Krupkait

PbCuBi₃S₆

orthorhombic

Kruťaite

Kruťait

CuSe₂

cubic

Krutovite

Krutovit

NiAs₂

cubic

Kryzhanovskite

Krizsanovszkit

Mn²⁺Fe³⁺₂(PO₄)₂(OH)₂ • H₂O

orthorhombic

Ktenasite

Ktenaszit

(Cu²⁺, Zn)₅(SO₄)₂(OH)₆ • 6H₂O

monoclinic

Kuannersuite-(Ce)

Kuannersuit-(Ce)

Ba₆Na₂(Ce, Nd, La)₂(PO₄)₆FCl

trigonal

Kudriavite

Kudrjavit

(Cd, Pb)BiS₂

monoclinic

Kukharenkoite-(Ce)

Kuharenkoit-(Ce)

Ba₂Ce(CO₃)₃F

monoclinic

Kukharenkoite-(La)

Kuharenkoit-(La)

Ba₂(La, Ce)(CO₃)₃F

monoclinic

Kukisvumite

Kukiszvumit

Na₆ZnTi₄Si₈O₂₈ • 4H₂O

orthorhombic

Kuksite

Kukszit

Pb₃Zn₃Te⁶⁺O₆(PO₄)₂

orthorhombic

Kulanite

Kulanit

Ba(Fe²⁺, Mn, Mg)₂Al₂(PO₄)₃(OH)₃

monoclinic

Kuliokite-(Y)

Kuliokit-(Y)

(Y, Yb)₄Al(SiO₄)₂(OH)₂F₅

triclinic

Kulkeite

Kulkeit

Na_0.35Mg₈Al(AlSi₇)O₂₀(OH)₁₀

monoclinic

Kullerudite

Kullerudit

NiSe₂

orthorhombic

Kupčíkite

Kupčíkit

Cu_3.4Fe_0.6Bi₅S₁₀

monoclinic

Kupletskite

Kupletszkit

(K, Na)₃(Mn, Fe²⁺)₇(Ti, Nb)₂Si₈O₂₄(O, OH)₇

monoclinic or triclinic

Kuramite

Kuramit

Cu₃SnS₄

tetragonal

Kuranakhite

Kuranahit

PbMn⁴⁺Te⁶⁺O₆

orthorhombic

Kurchatovite

Kurcsatovit

Ca(Mg, Mn²⁺, Fe²⁺)B₂O₅

orthorhombic

Kurgantaite

Kurgantait

CaSrB₅O₉Cl • H₂O

triclinic

Kurnakovite

Kurnakovit

MgB₃O₃(OH)₅ • 5H₂O

triclinic

Kurumsakite

Kurumszakit

(Zn, Ni, Cu)₈Al₈V⁵⁺₂Si₅O₃₅ • 27H₂O (?)

orthorhombic (?)

Kusachiite

Kusachiit

CuBi₂O₄

tetragonal

Kutínaite

Kutínait

Cu₁₄Ag₆As₇

cubic

Kutnohorite

Kutnohorit

Ca(Mn²⁺, Mg, Fe²⁺)(CO₃)₂

trigonal

Kuzelite

Kuzelit

Ca₄Al₂(OH)₁₂(SO₄) • 6H₂O

trigonal

Kuzmenkoite-Mn

Kuzmenkoit-Mn

K₄Mn₂Ti₈(Si₄O₁₂)₄(OH)₈ • nH₂O

monoclinic

Kuzmenkoite-Zn

Kuzmenkoit-Zn

K₄Zn₂Ti₈(Si₄O₁₂)₄(OH)₈ • nH₂O

monoclinic

Kuzminite

Kuzminit

Hg(Br, Cl)

tetragonal

Kuznetsovite

Kuznyecovit

Hg⁺₂Hg²⁺(AsO₄)Cl

cubic

Kvanefjeldite

Kvanefjeldit

Na₄(Ca, Mn)Si₆O₁₄(OH)₂

orthorhombic

Kyanite

Kianit

Al₂SiO₅

triclinic

Kyzylkumite

Kizilkumit

V³⁺₂Ti₃O₉

monoclinic