PLUMBOPYROCHLORE (Pb,Y,U,Ca)2-xNb2(O,OH)7 Isometric
Description: Plumbopyrochlore is a vey rare min eral found in altered granites.
MARATHON COUNTY : Plumbopyrochlore was found as tiny grains intergrown with ferrocolumbite in the Magurie Pit, part of the LaDick East quarry complex east of Wausau. (Buchholz et. al. , 2005a)
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