The Methods of Petrographic-Microscopic Research, Their Relative Accuracy and Range of Application

The Methods of Petrographic-Microscopic Research, originally published in 1911 by Fred. Eugene Wright, is a comprehensive guide on the petrographic microscope and its applications in the field of petrology. This classic text, now republished by Leopold Classic Library, has been meticulously quality-checked to ensure the best possible reproduction of the original work. Wright’s detailed analysis covers a wide range of topics essential for anyone involved in microscopic petrographic research. The book delves into the principles of optical methods, the construction and adjustment of the petrographic microscope, and various techniques for measuring optical properties of minerals. Key sections include discussions on spherical and chromatic aberrations, astigmatism, curvature of the field, and magnification. The text also addresses the optical constants of minerals, such as refractive index, birefringence, and optic axial angle, providing practical methods for their determination. With an emphasis on quantitative data and precision, Wright’s work highlights the transition from qualitative to quantitative petrographic analysis. This foundational text is invaluable for geologists, mineralogists, and researchers aiming to enhance their understanding of microscopic techniques and their application to the study of fine-grained and artificial mineral preparations. Leopold Classic Library’s edition preserves the historical significance of Wright’s contributions while offering modern readers access to this seminal work in petrographic research. Whether you are a professional in the field or a student of geology, this book is a crucial addition to your library, providing timeless insights into the methodologies that have shaped modern petrography.