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Thermodynamics in Mineral Sciences
Thermodynamics is an important tool to interpreting the conditions at which natural
geomaterial equilibrate. It allows one to determine, for example, the equilibrium
pressures and temperatures and the nature and chemical composition of phases involved
mineralogical and petrological processes. Simple chemical model systems,
which are often studied in the laboratory in order to understand more complicated
natural systems, generally consist of few chemical components. In order to use
phase equilibrium results obtained from model systems for interpreting the conditions
of formation of natural geologic materials, extrapolations in compositional
space and other P-T conditions are often required. This can only be done using the
mathematical formalism that is offered by thermodynamics.
An number of excellent books on thermodynamics with regards to the fields of
mineralogy, petrology and geochemistry have been published over past 40 years.
Many of them are, however, written for more advanced students and experienced researchers
and it is often assumed that the reader already possesses some prior
knowledge of the subject. Consequently, discussions and presentations of basic concepts,
which are necessary for beginning students and others attempting to learn
thermodynamics for the first time, are often given short shrift. Therefore, the aim of
this book is to explain the basic principles of thermodynamics at an introductory level,
while trying not to loose much of the mathematical rigor that is one of the most
important and central aspects of this subject. Moreover, many students in geosciences
are required to take thermodynamic courses in chemistry departments where they
are mostly confronted with treatments of gases and fluids. Thereby, the connection
to geological or mineralogical problems is often not perceived and, unfortunately,
students do not come to understand the importance of thermodynamics for a number
of different areas in the geosciences.Therefore, this introductory textbook was written
with the aim of reaching beginning geoscience students. In order to demonstrate
the usefulness and power of thermodynamics, various experimental phase equilibria
results, calorimetric data, etc. from geological literature are used to demonstrate different
types thermodynamic calculations. The problems at the end of each chapter
are given in order that students can practice the more theoretical concepts that are
presented in text.
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