Fergusonite-(Y) – Ontario, Canada
Weight: 36.7 Grams
Size: 52x32x22mm
Locality: J.G. Gole Quarry, Murchison Township, Nipissing District, Ontario, Canada
Formula: YNbO4
The toothpicks indicate two Fergusonite-(y) crystals.
Oxides present by mass:
CaO1,58 % UO25,09 %ThO20,31 %Y2O328,46 % Nd2O30,51 % Sm2O31,39 % Gd2O31,76 % Dy2O33,09 % Er2O31,04 % Yb2O33,79 % Lu2O31,01 % Nb2O545,20 % Ta2O54,44 % Total:93 %
Fergusonite was named in honor of Robert Ferguson, a Scottish landowner, politician, and mineral enthusiast who lived from September 8, 1769, to December 3, 1840, in London, England. In 1987, the suffix was appended to adhere to the Levinson principle for minerals containing essential rare earth elements (in this instance, yttrium).s.
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