Additional data on the volcanic argillites from Red Rock Point, Wellington

Abstract

The dove-grey volcanic argillite from, Red Rock Point is petrographically and chemically very similar to the red and green volcanic argillites, and differs only in the degree of oxidation of the iron oxide. These volcanic argillites are, considered to be mainly argillaceous in nature (at least 70 to 80%), with the admixture of volcanic material probably containing a high proportion of finely divided iron oxide.