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![](./images/clear.gif) 1.- Nb-Ta-(Ti-Sn) oxide mineral chemistry as tracer of rare element granitic pegmatite fractionation in the Borborema Province, northeastern Brazil
Springer-Verlag; Berlin; DEU; Federal Republic of Germany, 2008
Thematic issue on Brazil
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![](./images/clear.gif) 2.- Titanian ixiolite; niobian rutile intergrowths from the Borborema pegmatitic province, northeastern Brazil
Mineralogical Association of Canada; Ottawa, ON; CAN; Canada, 2007
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