Silver & Uraninite Slab - Eldorado Mine, Port Radium, Northwest Territories Canada

These exceptional slabs of silver and uraninite originate from the legendary Eldorado Mine at Port Radium, Northwest Territories—one of the most historic and storied uranium-silver localities in Canada. Each piece represents a tangible link to the dawn of the atomic age and the northern mining frontier that shaped both scientific and industrial history. These slabs were cut from museum-grade specimens formerly in the Royal Ontario Museum’s collection and are believed to have been originally collected by Gilbert Labine himself, the mine’s founder and one of Canada’s most significant prospectors.

Composed of massive intergrowths of native silver intertwined with dense uraninite (pitchblende), these slabs showcase the extraordinary mineralization that made the Eldorado deposit world-famous. The metal content is remarkably rich—some pieces are over 70% pure silver, with intricate dendritic and vein-like structures running through jet-black uraninite. The combination of metallic luster, radiometric density, and historical provenance makes these slabs true centerpiece specimens unlike anything typically available on the market.

Authentic Eldorado material of this quality and scale is exceptionally rare. Most pieces from the mine are small fragments or weathered ore samples; these, by contrast, are large, professionally cut, and beautifully preserved—making them both scientifically valuable and visually striking. Their connection to the Royal Ontario Museum and to Labine’s early exploration work adds immense provenance and collector prestige, elevating them far beyond ordinary uranium minerals.

For advanced collectors, museums, or institutions, these slabs offer a once-in-a-generation opportunity to acquire museum-provenanced Eldorado ore of extraordinary quality, history, and composition. Each specimen stands as a tangible piece of Canadian mining heritage—bridging the worlds of mineralogy, metallurgy, and atomic history in one spectacular display of natural and human legacy.

Approx. specimen weight: 1906 grams

Approx. specimen size:  170mm x 150mm x 39mm

Approx. specimen activity on an SE International EXP: 3200 cpm