Uranophane - Madawaska Mine (Faraday Mine), Faraday Township, Hastings County, Ontario, Canada

This classic Canadian uranyl silicate comes from the historic Faraday Mine, one of the best-known uranium producers in the Bancroft camp. Uranophane typically forms as fibrous to acicular sprays in vibrant lemon-yellow to honey tones, often lining fractures or coating altered host rock. Its silky to satiny luster and radiating crystal habit give specimens strong visual texture and contrast against darker matrix.

Mineralogically, uranophane (Ca(UO₂)₂(SiO₃OH)₂·5H₂O) is a secondary uranium mineral formed during the oxidative alteration of primary uranium species such as uraninite. Specimens from Faraday are valued both for their locality significance within Ontario’s mid-20th-century uranium boom and for their representation of secondary uranium mineralization processes in granitic and pegmatitic environments. A solid addition to any Ontario or uranium-focused collection.

Approx. specimen size: 50mm x 45mm x 30mm

Approx. specimen weight: 57.32 grams

Approx. specimen activity on an SE International Ranger EXP: 1700 CPM