leakage halo

leakage halo

[′lēk·ij ‚hā·lō]
(geochemistry)
The dispersion of elements along channels and paths followed by mineralizing solutions leading into and away from the central focus of mineralization.
References in periodicals archive ?
It was interpreted as a possible "leakage halo effect" from an underlying basement source/mineralisation yet to be drilled (please refer ASX release 6th Sept 2011).
President Joe Kizis comments, "Experience has shown that Carlin-type mineral showings of any size, such as those already discovered near surface at Signal, can represent leakage haloes around much large multi-million ounce gold deposits.