Fergusonite-(Y) - J.G. Gole Quarry, Murchison Township, Nipissing District, Ontario, Canada

YNbO₄

Fergusonite-(Y) from the J.G. Gole Quarry in Madawaska, Ontario, is a rare and significant mineral known for its rich composition of yttrium, niobium, and tantalum, often with minor inclusions of uranium and rare earth elements. This mineral belongs to the fergusonite group, which is highly prized for its scientific and collectible value. At the J.G. Gole Quarry, fergusonite-(Y) typically appears as elongated prismatic crystals or granular masses, exhibiting a dark brown to black coloration with a submetallic to resinous luster. The mineral is commonly embedded within granitic pegmatites, often associated with feldspar, quartz, and other rare earth minerals. Its slightly radioactive nature adds to its appeal for geological studies, as it offers insight into the processes of rare earth element and uranium enrichment in pegmatitic environments.

Specimens of fergusonite-(Y) from this locality are highly sought after by collectors and researchers due to their aesthetic and scientific significance. The J.G. Gole Quarry is renowned for its unique mineralogical assemblages within the Madawaska region, a hotspot for rare and unusual minerals. Fergusonite-(Y) crystals from the quarry often display well-defined crystal faces and intriguing textures, making them particularly desirable for display. The mineral’s yttrium and rare earth element content also make it a valuable resource for understanding the geochemical evolution of pegmatites in the area. This combination of rarity, radiological properties, and geological importance solidifies fergusonite-(Y) as a prized find from this historic and mineralogically rich location.

Approx. specimen size: 90mm x 60mm x 20mm

Approx. activity on an SE International Ranger EXP: 4300 cpm