| wad | general term for soft, massive, manganese oxides |
| wadalite | Ca6Al5Si2O16Cl3 |
| wadeite | K2ZrSi3O9 |
| wadsleyite | (Mg,Fe)2SiO4 |
| wagnerite | (Mg,Fe)2PO4F |
| wairakite | CaAl2Si4O12·2H2O |
| wairauite | CoFe |
| wakabayashilite | (As,Sb)11S18 |
| wakefieldite-(Ce) | (Ce,Pb)VO4 |
| wakefieldite-(Y) | YVO4 |
| walentaite | H(Ca,Mn,Fe)Fe3(AsO4,PO4)4·7H2O |
| walfordite | (Fe,Te,Ti,Mg)Te3O8 |
| wallisite | PbTl(Cu,Ag)As2S5 |
| wallkilldellite | Ca4Mn6As4O16(OH)8·18H2O |
| walpurgite | Bi4UO2(AsO4)2O4·2H2O |
| walstromite | BaCa2Si3O9 |
| walthierite | BaAl6(SO4)4(OH)12 |
| wapplerite | roesslerite |
| wardite | NaAl3(PO4)2(OH)4·2H2O |
| wardsmithite | Ca5MgB24O42·30H2O |
| warikahnite | Zn3(AsO4)2·2H2O |
| warwickite | Mg(Ti,Fe,Al)(BO3)O |
| watanabeite | Cu4(As,Sb)2S5 |
| watkinsonite | PbCu2Bi4(Se,S,Te)8 |
| wattersite | Hg4HgCrO6 |
| wattevilleite | Na2Ca(SO4)2·4H2O |
| wavellite | Al3(PO4)2(OH,F)3·5H2O |
| wawayandaite | Ca12Mn4B2Be18Si12O46(OH,Cl)30 |
| waylandite | (Bi,Ca)Al3(PO4,SiO4)2(OH)6 |
| weberite | Na2MgAlF7 |
| weddellite | Ca(C2O4)·2H2O |
| weeksite | K2(UO2)2Si6O15·4H2O |
| wegscheiderite | Na5CO3(HCO3)3 |
| weibullite | Pb6Bi8(S,Se)18 |
| weilerite | BaAl3H[(As,P)O4]2(OH)6 |
| weilite | CaHAsO4 |
| weinebeneite | CaBe3(PO4)2(OH)2·4H2O |
| weinschenkite | churchite-(Y) |
| weishanite | (Au,Ag)3Hg2 |
| weissbergite | TlSbS2 |
| weissite | Cu2-XTe |
| welinite | Mn6(W,Mg)2Si2(O,OH)14 |
| wellsite | phillipsite-Ca |
| weloganite | Sr3Na2Zr(CO3)6·3H2O |
| welshite | Ca2SbMg4FeSi4Be2O20 |
| wendwilsonite | Ca2(Mg,Co)(AsO4)2·2H2O |
| wenkite | Ba4Ca6(Si,Al)20O39(SO4)3(OH)2·nH2O |
| wenzelite | hureaulite |
| werdingite | (Mg,Fe)2Al14B4Si4O37 |
| wermlandite | (Ca,Mg)Mg7(Al,Fe)2(SO4)2(OH)18·12H2O |
| wernerkrauseite | PbCuFe(PO4)2(OH)8 |
| wesselsite | SrCuSi4O10 |
| westerveldite | (Fe,Ni)As |
| wheatleyite | Na2Cu(C2O4)2·2H2O |
| whelanite | Ca5Cu2Si6O17(OH)2CO3·4H2O |
| wherryite | Pb7Cu2(SO4)4(SiO4)2(OH)2 |
| whewellite | CaC2O4·H2O |
| whiteite-(CaFeMg) | Ca(Fe,Mn)Mg2Al2(PO4)4(OH)2·8H2O |
| whiteite-(CaMnMg) | CaMnMg2Al2(PO4)4(OH)2·8H2O |
| whiteite-(MnFeMg) | (Mn,Ca)(Fe,Mn)Mg2Al2(PO4)4(OH)2·8H2O |
| whiteite group | |
| whitlockite | Ca9(Mg,Fe)(PO4)6PO3OH |
| whitmoreite | FeFe2(PO4)2(OH)2·4H2O |
| whitneyite | mixture: algodonite, copper |
| wickenburgite | Pb3CaAl2Si10O24(OH)6 |
| wickmanite | MnSn(OH)6 |
| wicksite | NaCa2(Fe,Mn)4MgFe(PO4)6·2H2O |
| widenmannite | Pb2UO2(CO3)3 |
| widgiemoolthalite | (Ni,Mg)5(CO3)4(OH)2·4-5H2O |
| wightmanite | Mg5BO3O(OH)5·2H2O |
| wiikite | yttropyrochlore-(Y) |
| wilcoxite | MgAl(SO4)2F·18H2O |
| wilhelmvierlingite | CaMnFe(PO4)2OH·2H2O |
| wilkinsonite | Na2Fe4Fe2Si6O20 |
| wilkmanite | Ni3Se4 |
| willemite | Zn2SiO4 |
| willemseite | (Ni,Mg)3Si4O10(OH)2 |
| willhendersonite | KXCa(1.5-0.5X)Al3Si3O12·5H2O, 0<X<1 |
| williamsite | antigorite |
| willyamite | (Co,Ni)SbS |
| wiluiite | Ca19(Al,Mg)13(B,Al)5Si18O68(O,OH,F)10 |
| winchite | CaNaMg4(Al,Fe)Si8O22(OH)2 |
| winstanleyite | TiTe3O8 |
| wiserite | (Mn,Mg)14B8(Si,Mg)O22(OH)10Cl |
| withamite | epidote |
| witherite | BaCO3 |
| wittichenite | Cu3BiS3 |
| wittite | Pb3Bi4(S,Se)9 |
| wodginite | Mn(Sn,Ta)Ta2O8 |
| wohlerite | NaCa2(Zr,Nb)Si2O7(O,OH,F)2 |
| wolfeite | (Fe,Mn)2PO4OH |
| wolframite | either huebnerite, ferberite |
| wolframoixiolite | (Nb,W,Ta,Fe,Mn)3O6 |
| wolfsbergite | chalcostibite |
| wollastonite | CaSiO3 |
| wolsendorfite | (Pb,Ca)U2O7·2H2O |
| wonesite | Na0.5Mg2.5Al0.5AlSi3O10(OH)2 |
| woodhouseite | CaAl3PO4SO4(OH)6 |
| woodruffite | (Zn,Mn)Mn3O7·1-2H2O |
| woodwardite | Cu4Al2SO4(OH)12·2-4H2O |
| wroewolfeite | Cu4SO4(OH)6·2H2O |
| wulfenite | PbMoO4 |
| wulfingite | Zn(OH)2 |
| wupatkiite | (Co,Mg,Ni)Al2(SO4)4·22H2O |
| wurtzite | (Zn,Fe)S |
| wustite | FeO |
| wyartite | Ca3U(UO2)6(CO3)2(OH)18·3-5H2O |
| wycheproofite | NaAlZr(PO4)2(OH)2·H2O |
| wyllieite | (Na,Ca,Mn)(Mn,Fe)(Fe2+,Fe3+,Mg)Al(PO4)3 |