Tombstone Belt
The Tombstone Gold‑Tungsten Belt forms part of the Tintina Gold Province, which extends more than 1,000 km across the northern North American Cordillera from Alaska through Yukon to the Northwest Territories. In Yukon and the NWT, the Belt is hosted within the Selwyn Basin, a Paleozoic deep‑water sedimentary sequence.
Across Yukon and Alaska, the Belt contains several significant Reduced Intrusion‑Related Gold System (RIRGS) deposits. These systems are characterized by sheeted, gold‑bearing quartz veins developed in the carapace zones of Cretaceous reduced felsic intrusions and have produced multiple world‑class deposits. Notable examples include the producing Fort Knox mine in Alaska (12 Moz Au) and the historic Eagle Gold (8.8 Moz Au) and Brewery Creek (2.16 Moz Au) mines in Yukon. A recent major discovery by Snowline Gold at the Valley deposit in eastern Yukon (+8 Moz) demonstrates the potential for large, discrete RIRGS deposits.
In the eastern Tombstone Belt, similar Cretaceous intrusions have generated extensive tungsten‑copper‑gold skarn systems where they interact with carbonate units of the Selwyn Basin. Rackla recently acquired the Lened intrusive complex, a cluster of at least three Cretaceous plutons associated with multiple high‑grade tungsten skarns. The area was last explored in the late 1970s and early 1980s by Union Carbide and has seen no modern exploration.
South of Lened lies the historic Cantung mine, which produced over 16 million MTUs of tungsten between 1962 and 2015—equivalent to approximately $20 billion worth of WO₃ at current prices.
Rackla continues to expand its land position through staking and strategic acquisitions. The company’s management team brings extensive regional experience and has compiled an extensive, historic geochemical and geophysical dataset to guide ongoing exploration.
