Geology and Mineralization

The Trixie Au-Ag deposit is a hybrid low-sulfidation to high-sulfidation epithermal system, with very high-grade polymetallic gold and silver veins structurally hosted within the Paleozoic aged Tintic Quartzite, and lesser base-metal mineralization hosted within sedimentary and carbonate rocks north of the main gold system. The deposit is overlain by the younger Oligocence aged volcanic sequences of the Packard Quartz Latite.


Gold mineralization at the Trixie mine is hosted by a series of north-south trending veins and structural fissure zones collectively known as the Trixie Vein system. Historic mining and development focused on the north-south trending, steeply west dipping 75-85 fissure, that displays prominent extensional fault displacement with high-grade gold and silver mineralization hosted within a typically 10-20 ft wide highly brecciated quartzite host. Historic mining focused on a number of steeply plunging ore shoots developed within the 75-85 fissure zone, including the 756 ore shoot to the north, centrally located 75-85 vein segments and the Survey ore shoot to the south. Importantly all historic mining was focused within the westerly dipping 75-85 fissure.


High-grade mineralization identified by TCM in 2020 is located in the eastern footwall of the main 75-85 fissure zone, located only 50 ft from the existing 625 level mine development. A significant north-south striking narrow fault breccia and associated stockwork quartz veining has been developed for over +700 ft of strike length, and consistently reports multi-ounce gold grades over 4-8 ft widths. To date, two bonanza grade ore shoots have been identified within this stockwork veined structure that consistently report gold grades between 30-400+ oz/t Au over 2-3 ft widths. The bonanza ore shoots display an exotic mineralogy of tetrahedrite-tennantite, significant native gold and electrum, barite and rare Cu-tellurate that provide a striking emerald green appearance with many specimen quality samples being a hallmark of the Tintic District.

Significantly, this newly identified bonanza and high-grade structure dips steeply towards the east, away from the steeply west dipping 75-85 fissure and underlying historic mine development. Mineralization on this significant new structure remains open in all directions, in particularly at depth.