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P.42<br />

TABLE P.3.2. Systematic Tabulations <strong>of</strong> Metamict Minerals(a)<br />

SIMPLE OXIDES Nb-Ta-Ti OXIDES (A = U, Th REE, Co, Na, K)<br />

*Uraninite (O 2 )(b,c)<br />

MgMn,Fe+2,Pb = Nb,<br />

Ta,Ti,Fe+ 3 ,W)<br />

*Rutile (TiO2) AB03 (Perovskite structure)<br />

PHOSPHATES *Loparite<br />

*Monazite (Conybeare and Ferguson 1948,<br />

Brooker and Nufield 1950)<br />

Irinite<br />

*Knopite<br />

pe<br />

*Xenotime (Sidorenko 1963)<br />

A2-xB207-3 nH20 (Pyrochlore<br />

structure)<br />

*Griphite (Peacor and Simmons 1972) *Pyrochlore<br />

Betafite<br />

SILICATES *Microlite<br />

Djalmaite<br />

Nesosilicates (Si:O = 1:4) Obruchevite<br />

*Zirconolite<br />

*Zircon<br />

*Thorite<br />

A2 B50 15 (Davidite structure)<br />

*Davidite<br />

*C<strong>of</strong>finite<br />

*Titanite (Higgins and Ribbe 1976)<br />

AB04<br />

AB<br />

(Fergusonite structure)<br />

4 (Fergusonite structure)<br />

Formanite<br />

*Huttonite *Fergusonite<br />

*Steenstrupine-Cerite<br />

Risorite<br />

*Britholite group<br />

AB2 06 (Columbite structure)<br />

*Columbite (Hutton 1959,<br />

*Lessingite<br />

Karnasurtite<br />

Ewing 1976b)<br />

Karnocerite<br />

Tritomite<br />

AB2 06 (Euxenite structure)<br />

Spencite *Euxenite (Ewing 1976a)<br />

Rowlandite Polycrase<br />

Gadolinite Delorenzite<br />

Sorosilicate (Si:0 = 2:7)<br />

*Fersmite<br />

Thortveitite<br />

AB2 06 (Priorite)<br />

group<br />

*Priorite<br />

*Thalenite<br />

Yttrialite<br />

*Aeschynite<br />

*Bloomstrandine<br />

*Hellandite<br />

*Rincolite<br />

Polymignite<br />

Epidote group<br />

*Allanite<br />

AB2 04 (Samarskite structure)<br />

*Chevkinite Samarskite<br />

*Perrierite Chlopinite<br />

Loranskite<br />

*Vesuvianite (Bouska 1970) Yttrocrasite<br />

Cyclosilicates (Si:O = 1.3) AB 2 0 6 (Brannerite structure)<br />

*Eudialyte *Brannerite<br />

Cappelenite (Faessler 1942) Thorutile<br />

AB 2 0 7 (Zirkelite structure)<br />

Zirkelite<br />

(a) After Bouska (1970).<br />

b) The asterisk (*) indicates that the mineral also occurs as a partially or completely<br />

crystalline phase.<br />

(c) A reference indicates that inclusion <strong>of</strong> the mineral in this table is based only on a<br />

single or poorly documented occurrence.

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