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Collector's Guide to the Feldspar Group

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Collector's Guide to the Feldspar Group - Lauf, Robert J
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Over 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 earths 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 create fine crystals, twins, and vivid colors. After a brief introduction, ...

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Collector's Guide to the Feldspar Group 2013, Schiffer Publishing, Atglen, Pa

ISBN-13: 9780764343292

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