The Buchan’s deposits comprise one of the highest grade massive sulphide camps ever mined. They were mined from 1927-1984, producing 16.2 Mt of ore grading 14.51% Zn, 7.56% Pb, 1.33% Cu, 126 g/t Ag, 1.37 g/t Au. Most of the exploration within the belt predates the modern understanding the structure as a complex fold and thrust belt and was concentrated in the immediate vicinity of the mining activity.  Drilling at Mary March in 1999 intersected 9.63m @ 10.11% Zn, 1.68% Pb, 4.18 g/t Au & 122 g/t Ag, the best intersection outside the mined deposits.  Modern airborne TDEM geophysical surveys in 2012 and 2017 and surface exploration have defined further targets of interest.

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