Thursday, February 25, 2016

Silicification in the Laterite Profile


Generally speaking, silica is associated with the laterite profile in two distinct ways : a) As massive silica; forming thick silica cap or silcrete, and b) As boxwork; silica sheets and lenses that are emplaced within limonite, saprolite or clay zones.

Massive silica cap or silcrete is generally present in “fossil” laterite deposits that have developed over ultramafic rocks of Precambrian age.

No comments:

Post a Comment