The Mestersvig Base Metal Project in eastern Greenland comprises two 100% Ironbark owned tenements which contain the historic high-grade Blyklippen Zinc-Lead Mine and the outcropping Sortebjerg Zinc-Lead Prospect.
The Blyklippen base metal mine was operated between 1956 and 1962 and produced 544,600 tonnes of high-grade ore in excess of 20% zinc + lead for a recovered grade of 9.9% zinc and 9.3% lead. Previous explorers identified additional mineralised structures near the main mine and the project area is considered prospective. During 2011 exploration, Ironbark drilled under the historic mine to test for deep extensions. Three diamond holes were drilled and all intersected a mineralised structure at depth as shown in the figure below.
Plan and Long section showing the Blyklippen mine and Ironbark drilling
The Sortebjerg prospect is located 8km south of the Blyklippen mine on the same north-trending fault zone. During the 1950’s a 16 hole drilling program was conducted in the area that returned significant zinc and lead grades. During their 2011 exploration season, Ironbark followed up on these results and drilled three diamond holes that returned significant intercepts including 2.5m @ 8.9% Zn+Pb and 1.0m @ 17.3% Zn+Pb & 4 g/t Ag.
Location plan of mapped fault zones and base metal mineralisation within the Blyklippen/Sortebjerg area