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POTD/2016-06-10
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Source: Wikipedia, the free encyclopedia.
<
Template:POTD
Picture of the day archives
:
2016 June
<
2016 June 9
2016 June 11
>
Picture of the day
A
pegmatites, and rarely in
carbonatites
. Though there is no applicable use for the accepted betafite species, it is an important
ore
of
thorium
,
uranium
, and
niobium
.
Photograph:
Heinrich Pniok
Archive
–
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