Overview

Excerpt from Lectures on Geology: Being Outlines of the Science, Delivered in the New-York Athenaeum, in the Year 1825 Hornblende rocks are not always composed of but two constituent parts sometimes admitting ink to the compound quartz, mica, talc, lime and iron, which latter decomposes by the action of air, and disintegrates the mass. Epidote is occasionally present in these rocks, which are then susceptible of a fine polish. When the felspar is in crystals it is called porphyrytic greenstone and this variety. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Full Product Details

9781330147047

Table of Contents

Reviews

Author Information

Tab Content 6

Customer Reviews

Recent Reviews

Countries Available