The Analysis of Minerals and Ores of the Rarer Elements (Classic Reprint)

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Excerpt from The Analysis of Minerals and Ores of the Rarer Elements During the earlier period of chemistry as an exact science a justifiable distinction was created by mineral chemists between common and rare elements. Only a few of the latter had been isolated from a small number of scarce minerals, the methods for their detection and estimation were uncertain, their application in the arts was negligible. Though briefly dealt with in text-books, they were neglected in the lecture-room and in the laboratory. The advances made by scientific and industrial research, especially during the last decade, have brought about a complete and permanent change. Only the rarest elements have not yet been put to some practical use, others, supposed to be of scanty occurrence, have been found to be universally distributed, though in small quantities, a few have been discovered in local deposits of considerable magnitude, whilst several have now definitely taken their place as indispensable adjuncts of metallurgical and chemical industry. While this revolution has been, and still is, going on, the old arbitrary separation into common and rare elements is still adhered to by most writers and teachers, with the result that the training of the future chemist can hardly be said adequately to prepare him for present-day requirements. The older professional man, if confronted with the unfamiliar subject in his practical work, has to glean his information from original communications scattered amongst the vast output of technical literature, as not one of the otherwise excellent handbooks on ore analysis contains anything like a complete list of the rarer elements. The present volume represents an endeavour on the part of its authors to bring the analysis of minerals of the rarer elements into line with that of their more abundant relatives, the descriptions of the operations of mineral analysis being preceded in each ease by concise information on the general and analytical chemistry, as well as the mineralogy, of the element under treatment. In this form the book will, we trust, appeal to the analyst or metallurgist in actual practice, as well as to the student who has mastered the chemistry of the common elements, and become proficient in the analysis of their ores. A uniform plan has been adhered to throughout the book so as to facilitate reference. The elements follow each other in the order of the groups of the Periodic System. 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.