The KSL deposit is located in the “Central European copper belt”, an area of some 600,000km2 which ranges from the UK via the Netherlands and Germany into Poland, and as far as the Baltic countries and Belarus. It is of the Kupferschiefer type, a thin (generally less than one meter thick) bed of marine bituminous marl of Upper Permian (Zechstein) age, occurring over a large area of north-central Europe. The Kupferschiefer has been exploited for silver and some base metals, notably copper, since medieval times. The mineralization is predominantly copper with some lead, zinc, gold and silver. The mineralization occurs in 3 layers of the Werra Series in Basal Zechstein stratigraphy: the Limestone, the Copper Shale and the Sandstone.


The database consits of 164 drill holes (or wedges), 52 of which intersect mineralization. The last drilling campaign in 2009/10 led to a NI 43-101 Resource Report by SGS Canada Inc defining 115 million tonnes of Indicated resources at a total of 1.9% CuEQ and Inferred Resources of 14.5 million tonnes at a total of 1.89% CuEQ.