Uranopyrochiore, Zircon: McDonald mine, Bancroft, Ontario, Canada

Description

Species: Uranopyrochiore, Zircon
Locality: McDonald mine, Bancroft, Ontario, Canada
Dimensions: 7.6 x 4.3 x 8.8 cm.

Rich specimen of brown uranopyrochlore and cyrtolite zircon in pegmatite matrix from the classic McDonald mine near Bancroft, Ontario. Measures ~50,000 CPM on my Ludlum Model 3 Counter with 44-9 probe. Classic!