Gadolinite-(y) Crystals by the Gram
Size: 1 to 5 mm
Weight: By-the-gram. Multiple gram orders will ship in the same plastic puck unless otherwise requested. The Geiger counter measurements in the pictures were taken with one-gram of gadolinite-(y) crystals. The pictures also show one-gram of crystals in the plastic puck.
Formula:Y2FeBe2Si2O10
Locality: Deer Park Mine, Penland, Mitchell County, North Carolina, USA
32% Yttrium by mass
Gadolinite-(Y) is a rare and historically significant silicate mineral primarily sought after by advanced mineral collectors and those interested in rare-earth elements (REEs). It is famous for being the original source from which the element yttrium was first discovered by Finnish chemist Johan Gadolin in 1794.
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