RARE METALS AND THEIR DISTRIBUTION. 
93 
None of the other metals of this group have been looked 
for in this State, though doubtless present in small amounts. 
Scandium in particular has of later years attracted much 
attention. It is known in quantity in but one mineral, viz., 
Thortveitite (a silicate of scandium). Our latest knowledge 
of the distribution of this metal as given by Vernadsky* 
may be summarised thus : — 
" Scandium occurs principally in the following minerals : 
Zirconium-minerals, beryl, titanates, niobates and tita- 
noniobates of the rare earths, cassiterite, wolfram and 
mica. These minerals belong to a definite natural group, 
viz.., the minerals of the pegmatite veins and stock works 
of the acid rcoks of the granite and syenite type." 
It is evident that Scandium should be widely distri- 
buted in this State where the typical minerals mentioned 
are widespread. 
The yttrium metals in general are usually found both 
here and elsewhere concentrated round the periphery of 
intrusive granite in the pegmatite offshoots. Details of local 
occurrences are as follow : — - 
Cooglegong, Gadolinite. — In black masses in pegma- 
tite and in rolled pebbles in stream gravel. (Y,Er) 2 0 3 , 
33.40%. Analysis on page 91. 
Euxenite in brown angular pebbles in alluvium. (Y. 
Er) 2 0 3 , 23.03%. Analysis given below, page 22. Full 
details of this occurrence are described in the Australasian 
Association Report for 1909, page 313. 
F ergusonite, abundant in angular pebbles in alluvium. 
(Y.Er) 2 0 3 , 31.38%. Analysis below, page 22. For further 
details see Australasian Association Report for 1909, page 
132. 
Monazite, abundant in small angular and crystalline 
pebbles in allmium. (Y.Er) 2 <% , 0.04%. See under Ce- 
rium, page 94. 
Moolyella. — Monazite, common in small angular and 
crystalline pebbles with stream tin ore. (Y.Er) 2 0 3 , 0.14%. 
See under Cerium, page 94. 
Lake Moore District. — Gadolinite. No details of 
this occurrence. 
Greenbushes. — Xenotime. Occasional small octahedra 
associated with stream tin. 
Nannup. — Xenotime. Few small octahedra in con- 
centrates from alluvium. 
* W. Vernadsky : “ Notes on the Distribution of Scandium," 
Bull, de l’Acad. Imp! des Sciences, de S. Petersbourg. 1008, II, 1273-4. 
