amorphous

Al2O3(SiO2)1.3-2.0·2.5-3.0H2O

CaFe^3⁺4(PO4)2(OH)8·4-5H2O (?)

Fe^3⁺2(PO4)(SO4)(OH)·6H2O

Cu2(CO3)(OH)2

SiO2

SiO2·nH2O

Fe^3⁺3(PO4)2(OH)3 * 5H2O

CaMgAl2(PO4)2(OH)4·7H2O

Ca1-2(Ti,Nb)5O12 * 9H2O (?)

Al2PO4(OH)3·4H2O

Al3PO4(OH)6·6H2O

(Mn,Ca)(Nb,Ti)5O12·9H2O

MoS2

(Ce,La,Th)(Ti,Nb)(Al,Fe)(Si2O7)(OH)4 * 3H2O

(Mn,Ca)(Ti,Nb)5O12 * 9H2O

Sb2S3

WO3 * 2H2O

[Fe,AsO4,SO4,H2O] (?)

[Pb,Cu,Al,PO4,H2O] (?)

(Ca,Th,Mn)3Si4O11F·6H2O

Na3Sr4ThSi8(O,OH)24