Abstract

A feldspathized sandstone containing 8.6 per cent of K 2 O, largely in the form of authigenic orthoclase, is a distinctive lithic unit in the lower part of the Upper Cambrian Franconia formation. The rock is composed of feldspar, 48 per cent; quartz, 44 per cent; glauconite, 5 per cent; muscovite, 2 per cent; collophane, 0.5 per cent; leucoxene, 0.4 per cent; and traces of zircon, tourmaline, and garnet. The chemical and physical properties of the rock are discussed.

First Page Preview

First page PDF preview
You do not currently have access to this article.