Gummite, Autunite, Uranophane, Uraninite, Parauranophane
Ruggles Mine, Grafton, Grafton County, New Hampshire, USA
7.8 x 6.3 x 3.6 cm
A great representative specimen of so-called "Gummite" which is defined now as a mixture of Boltwoodite, Clarkeite, Curite, Kasolite, Soddyite, Uraninite and Uranophane. Even though the Uraninite can be clearly seen on the piece, it's the yellow "Gummite" that makes the piece so eye-catching. This piece is from the collection ...
© Brian Kosnar - Mineral Classics