Root & Cellar
About Root & Cellar
The Root & Cellar property, located on the Burin Peninsula of eastern Newfoundland, hosts what Northern Shield Resources believes to be a complete porphyry copper-epithermal gold mineral system — from preserved hot spring deposits at the ancient surface down to the copper-gold engine at depth.
The Property hosts two genetically connected types of mineral deposits: epithermal gold-silver-tellurium mineralization deposited near the ancient surface by hot fluids rising from depth, and a deeper porphyry copper-gold-molybdenum system associated with an intrusive body at depth that provided the heat, metals, and fluids that powered the entire mineral system
The Root & Cellar Mineral System
The 100%-owned property covers approximately 48 km2 and to date, five gold-silver-tellurium zones (Conquest, Drop Zone, Windfall, Red Rock and Braxton-Bradley) have been identified across a large area surrounding a central porphyry copper target (Creston). These showings are arranged in a systematic pattern that mirrors the metal zonation observed at world-class porphyry-epithermal districts globally. However, what sets Root & Cellar apart is its association with tellurium.
Tellurium — A Critical Metal
Tellurium is classified as a critical mineral by Canada, the United States, and the European Union. It is a key component in next-generation Cd-Te thin-film solar panel technology, with approximately 90% of global supply currently sourced from China. The U.S. Defense Logistics Agency has indicated interest in acquiring tellurium for military stockpiles. Tellurium is found as a by-product of certain gold and copper deposits, and its strong presence across the entire Root & Cellar and Fortune Trend district — with values up to 700 ppm in rock samples — is both a positive indicator of system size and a potential source of this strategically important metal.
The Alkalic Porphyry Model
Multiple lines of evidence suggest that the Root & Cellar mineral system is alkalic to high-K calc-alkaline in character — a significant interpretation with implications for exploration strategy and deposit analogues.
The Au-Te association is pervasive across the district, with tellurium anomalies in every showing from Creston through Conquest. Telluride-bearing epithermal deposits have a particularly strong global association with alkalic porphyry systems, as seen at Cadia (Australia), Emperor (Fiji), Cripple Creek (Colorado), and Porgera (Papua New Guinea).
Potassium enrichment is extreme and widespread. K/Na molar ratios in the rhyolite dome at the edge of the copper anomaly reach median values exceeding 45 — far beyond what can be explained by primary magmatic composition and indicative of intense hydrothermal potassic alteration by K-bearing, gold-carrying fluids.
The alteration zonation at Root & Cellar shows a direct transition from potassic to propylitic alteration without a significant intervening phyllic (sericite-quartz-pyrite) zone. In classic calc-alkaline porphyry systems, the phyllic zone forms a thick shell between the potassic core and propylitic periphery. Its absence at Root & Cellar is diagnostic of an alkalic system. Instead, the upper part of the system is characterized by potassic and hematite alteration, producing a distinctive reddening that then grades directly into the propylitic zone. Manganese-rich epidote (piedmontite) in the propylitic zone, further supports the alkalic model.
The Avalon Terrane and Challenging Conventional Wisdom
Root & Cellar lies within the Avalon terrane, a Late Proterozoic (~590-560 Ma) volcanic-plutonic arc that extends from southeastern Newfoundland through the Maritime provinces and down the eastern seaboard of the United States as the Carolina Slate Belt. The Avalon terrane hosts the former Hope Brook gold mine — Newfoundland’s only past-producing epithermal gold deposit — and has long been recognized as prospective for epithermal gold mineralization. Northern Shield’s work at Root & Cellar is demonstrating for the first time that the Burin Peninsula also has significant potential for porphyry copper-gold deposits, challenging the long-held assumption that these shallow-forming deposit types could not survive the 570 million years of geological history since formation.