Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.

The Analysis Of Minerals And Ores Of The Rarer Elements - For Analytical Chemists, Metallurgists, And Advanced Students

Schoeller, Walter Raymond

Science & Math

Camp Press

This early work on mineralogy and petrography is both expensive and hard to find in its first edition. It contains details on polarizing microscopes, mineral determination, igneous rock types, geological mapping and much more. This is a fascinating work and is thoroughly recommended for anyone interested in geology. Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.

Introduction To Optical Mineralogy And Petrography - The Practical Methods Of Identifying Minerals In Thin Section With The Microscope And The Principles Involved In The Classification Of Rocks

Edwards, M G

Earth Sciences

<p>Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.</p>

Democratic Vistas And Other Papers

Biographies & Memoirs

WHITMAN, WALT

Arts & Literature

Originally published in 1916. INTRODUCTION - To Optical Mineralogy and Petrography The Practical Methods of Identifying Minerals in Thin Section With the Microscope and The Principles Involved in The Classification of Rocks - PREFACE: IN THE preparation of this volume the writer has attempted to gather together and systematize in a manner accessible for ready reference those facts which are essential to a field geologist or to a mining engineer in an understanding of the fundamental principles involved in the classification and identification of rocks. In the field, a preliminary classification is usually made by macroscopic means. However, it is often necessary to make a more careful classification by a microscopic examination of a thin section of the minerals comprising the rock mass. To do this successfully requires a knowledge of the application of light to crystalline substances. This volume differs from most of the reference and text books relating to this subject in that it incorporates in one volume the elements of optical mineralogy and the elements of petrography. In Part One, eight general operations for the determination of unknown minerals in thin section are described, prefaced by a short summary of the principles of optics which apply to the transmission of polarized light through minerals. Descriptions of fiftyeight of the most common of the rock-making minerals are given, special attention being given to the criteria for the determination of these minerals in thin section. Their form, cleavage, twinning, color, refringence, bi refringence, extinction angles, pleochroism, absorption, optical character, inclusions, alterations, occurrences, uses, and differentiation from similar minerals, are all discussed whenever applicable. An elementary knowledge of crystallography and descriptive mineralogy is assumed. In Part Two, the principles of petrography are discussed briefly. Attention is given to the classification and description of the more important igneous rock types. Following Iddings, Winchell, and other American petrographers, the symbols X, Y, and Z, are here employed in referring to the axes of ether elasticity, instead of the German a, b, and c, used in many text and reference books. This is done to avoid confusion, especially in conversation or discussion, with the crystallographic axes. 2 The writer is indebted to Professor Frank R. Van Horn for suggestions. Among the reference and text books most frequently consulted the writer wishes to acknowledge Winchells Elements of Optical Mineralogy, Johannsens Manual of Petrographic Methods, Luquers Minerals in Rock Sections, Rogerss Study of Minerals, Findlays Igneous Rocks, Kemps Handbook of Rocks, Ries and Watsons Engineering Geology, and Farrells Practical Field Geology. Cleveland, Olzio, Februarp, 1916. Contents include: INTRODUCTION. PAGE PART ONE. - OPTICAL MINERALOGY. CHAPTER 1 . - THE ELEMENTS O F OPTICS A ND THE APPLICATIO O N F POLARIZELDI GHT T O CRYSTALLINE SUBSTANCES .. .............................. 13 The Nature of Light - Isotropic and Anisotropic Media - Uniaxial and Biaxial Crystals - Index of Refraction - Double Refraction - Interference - Polarization. CHAPTER 2. - THE POLARIZINMGI CROSCOP A E N D ITS PARTS ...................................... 25 Microscope - Nicol Prisms - Condensing Lens - Cross Hairs - Stage - Mirror - Objective - Rertrand Lens - Ocular Micrometer - Ad j ustment Screws. CHAPTER 3 . - GENERALM ETHODS O F MINERALD E TERMINATION ............................... 33 1. By the General Physical Properties 2...

The Italian Cook Book the Art of Eating Well - Practical Recipes of the Italian Cuisine - Pastries, Sweets, Frozen Delicates, and Syrup

Gentile, Maria

Cookbooks, Food & Wine

Cyrus The Great

History

ABBOTT, JACOB

Middle East

A Writer's Recollections

Ward, Humphry

Russia - Vol II.

Wallace, Donald MacKenzie

Russia

National Epics

Rabb, Kate Milner

Religion & Spirituality

<p>A handbook on chess for beginners, this fully revised edition teaches the moves of the pieces, the rules of the game, simple openings, middle-game developments and the excitement of end-game strategies.</p>

Chess Made Easy

Humor & Entertainment

Purdy, C. J. S.

Puzzles & Games

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