two yellow radioactives, Novacekite and Sklowdowskite in a matrix of gypsum/calcite from mexico
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New Method Uranium Mine, Amboy, California
Large matrix featuring calcite, fluorite and the uranium mineral boltwoodite. This specimen has a fine mixture of crystals.
8.5x 3.1 x 3 cm
Bancroft, Ontario, Canada
Nice group of two crystals, fun, well formed crystal
2.3 x 1.6 x 1.4 cm
Great cluster of this bright yellow uranium mineral!
8 x 6.1 x 4.7 cm