Collector's Guide to the Feldspar Group by Robert J. Lauf and Wendy Boston

and Wendy Boston

Exhaustively researched

"--THE AMERICAN GENEALOGIST

PRITCHARTT

the purpose of this book is to impart that information to the reader which is necessary to develop the knowledge and ability to perform those tasks

Collector's Guide to the Feldspar Group by Robert J. Lauf and Wendy BostonOver 100 vivid color photographs of beautiful feldspar minerals show each species in its geological context. The feldspar minerals, as a group, make up nearly sixty percent of the earth's crust. Large crystals are found at many locales worldwide, in both igneous and metamorphic rocks. Often, feldspar forms the matrix for stunning gem crystals found in pegmatites. This book explains how feldspars are formed and the complicated structural features that