Glossary · Drilling
Drill intercept
A length of drilled rock containing mineralization above the cut-off grade.
A drill intercept is the portion of a drill hole that returned assay grades above the cut-off. Intercepts are reported as 'length @ grade' — e.g. '12.5 m @ 4.2 g/t Au'. The length can be downhole (the literal distance drilled) or true width (the perpendicular thickness of the mineralized body). True width is the geologically meaningful number; downhole length over-states width when the drill hole intersects the mineralization at a shallow angle.