two yellow radioactives, Novacekite and Sklowdowskite in a matrix of gypsum/calcite from mexico
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New Method Uranium Mine, Amboy, California
Big plate of Calcite with lots of Boltwoodite all over the place.
9.2 x 6.1 x 4.5 cm
Fine thumbnail of this unique radioactive mineral
2.2 x 1.6 x .6 cm
Vug of Calcite with lots of Boltwoodite all over the place.
4.4 x 2.9 x 2.1 cm