Publisher's Synopsis
Excerpt from The Mineral Economics of the Carbonate Rocks
In most carbonate rocks, the Al; content amounts to about 20 percent of the silica content, giving a rough test of the accuracy of the analysis. Alumina is seldom critical unless resent in large amounts and is commonly useful in t e cement industry. P820} or total iron is a harmful component in the lass, filler, and some chemical industries. For some 0 these uses, the iron content must not exceed a few hundredths of a percent or, at most, one or two-tenths of a percent. In these low concentrations, most anal tical methods are relatively less accurate than in higher concentra tions; and, for these purposes, the iron content should be carefully rechecked. 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.
