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

and Wendy Boston

This long-awaited survey explores slag and marble glass from its four major producers: the Imperial Glass Corp

Cover) as the first cover artist announced for The Overstreet Comic Book Price Guide #51 with his incredible image of Daredevil and Echo

GESELLCHEN

Exhaustively researched

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