Pyrochlore supergroup

[A₂][Y| B₂ X₆]: A: [ 4+: U, Th ][ 3+: Sb, Bi, Y, Ce, REE, Sc ][ 2+: Ca, Mn, Sr, Ba, Fe, Pb, Sn ][ 1+: Na, Ag ][ 0: H₂O, [] ]; B: [ 6+: W ][ 5+: Ta, Nb, Sb, V ][ 4+: Ti, Sn, Zr. Hf, Si ][ 3+: Fe, Al ][ 2+: Mg ]; X: [ 2-: O ][ 1-: OH, F ]; Y: [ 2-: O ][ 1-: OH, F ][ 0: H₂O, [] ][ 1+: K, Cs, Rb ]