The Den North occurrence (and larger Spanish Moly property) is located approximately 75 kilometres northeast of 100 Mile House, British Columbia on Highway 97.
The oldest rocks on the property, and which host the mineral occurrences, comprise a mixture of pelitic schist, marble, felsic schist and chert, and dark, fine-grained, pyritic cherty metasedimentary rocks tentatively correlated with the Cambrian to Mississippian Eagle Bay Assemblage of Schiarizza and Preto (1987). These stratified rocks outcrop intermittently through the northern portion of the property. The rocks are typically tightly folded and strike north to northeast with moderate to steep easterly dips, although local variations are noted. The metasedimentary rocks display hornfels up to 1.5 kilometres from the observed plutonic contact. A composite granodiorite-granite pluton outcrops extensively in the southern half of the property where it forms a distinct donut shaped airborne magnetometer anomaly. Coarse-grained biotite granodiorite is intruded by finer-grained two mica granites and leucogranite in the central portion of the pluton and locally along the northern intrusive-metasediment contact (Assessment Report 36166).
The Den North showing surrounds and encloses the garnet-rich Den showing (MINFILE 092P 220) and is traceable for 30 metres in width with a strike length of at least 170 metres. The Den North showing lacks garnet, distinguishing it from the nearby Den showing. The Den North showing is characterized by variably skarn-altered crystalline limestone, calc-silicate minerals, and marble which contains visible molybdenite and scheelite. Manganese oxide stain is abundant in some outcrops, giving a black, sooty appearance to the rock. The Den North area is enclosed by quartz-mica schist and quartzite. Pyrite is the main metallic mineral with trace amounts of molybdenite and scheelite also visible (Assessment Report 36166).
The Spanish Moly property has been prospected, sampled, and mapped intermittently since 1999 by D. Ridley. In 2009, a stream sediment program identified a molybdenum-zinc-cobalt-iron-manganese anomaly draining the central portion of a granodiorite intrusion. In 2012, anomalous arsenic in soil was reported, associated with quartz-sericite-pyrite schist and phyllite (Assessment Report 33464). In 2013, minor molybdenite was reported in quartz-pyrite veinlets cutting biotite-granodiorite (Assessment Report 34678). In 2014, a program was completed to follow up the 2009 multi-element stream sediment anomaly and narrowed down potential source areas (Assessment Report 35537). In 2015, D. Ridley and D. Black discovered the Den (MINFILE 092P 221), Den North and East (MINFILE 092P 219) showings (Assessment Report 36166).
A grab sample (SM15DR7) from the Den North showing returned 141 parts per million molybdenum and 51.1 parts per million tungsten (Assessment Report 36166).
