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THERMAL ANALYSIS OF MINERALS
Dumitru N. Todor
ABACUS PRESS 1976 str. 256, stan db+ (podniszczona lekko okładka)
Preface
Geological activities involve both assiduous field-work and thorough laboratory investigations. The methods of thermal analysis rank among the most useful tools for carrying out inquiries into the nature of minerals. Although these methods have been known for a long time, it was only in the last thirty years or so that they have acquired a wider applicability, considerably enlarging their field of usefulness. Today, a complete analysis of solid mineral substances, whether natural or artificial, can hardly be conceived without the contribution of thermal analysis.
The methods of thermal analysis are based on a group of related instrumental techniques by means of which the physical or chemical modifications occurring in a sample subjected to temperature variations are measured. The modifications appearing as a function of temperature and time are closely connected with the chemical nature and the structure of the substance analysed. Being specific to every compound, these modifications, recorded in the form of thermal curves, serve to determine the composition of the compounds present in the sample. The benefits of the methods of thermal analysis are manifold, but foremost among them is their large area of investigation, the rapidity with which the determinations are carried out. and the low cost of the analyses.
The present work has been conceived to serve as a guide-line for those who carry out thermal analyses and for those who are to interpret their results, helping them to understand thoroughly the processes which arise when solid compounds are heated. It is therefore hoped that this text will not only meet the needs of geologists and chemists practising in the fields of geology, mineralogy, ore dressing, solid state physics and chemistry, building materials, ceramics, and even metallurgy, but will also be directly useful to students of chemistry and geology.
The book describes the theoretical and practical principles of thermal analysis methods. It discusses the experimental factors underlying these methods and the data interpretation procedures. It considers the detectable physical phenomena and chemical processes, and provides detailed accounts of the thermal behaviour of a great number of minerals. In each separate case, the description of the behaviour of native compounds is accompanied by the thermal curves which I have obtained on simple minerals. With few exceptions, the descriptions provided illustrate my own viewpoint. They are the result of many years of experience in this field and the processing of much data I have gathered in the course of time. There also appear some discrepancies between data from the literature, which have generally been obtained by single techniques, and my own data, which have been obtained by multiple techniques. However, these discrepancies are discussed critically.
N. D. Todor
Contents
1 Classification and principles of thermal analysis methods
2 Experimental factors in the methods of thermal analysis
3 Interpretation of thermal curves
4 Physical and chemical processes detectable by thermal methods
5 Thermal behaviour of minerals
6 Applicability of thermal methods of analysis for investigating complex rocks
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