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  Home » Store » Geology Books » Geodes: Nature's Treasures

Geodes: Nature's Treasures

 
Geodes: Nature's Treasures Geodes: Nature's Treasures by Brad L. Cross and June Culp Zeitner.

What are geodes? How do they form? Where can they be found. How to open them and collect them. Heavily illustrated with beautiful specimens. This book is a 7" x 9" paperback with 292 pages.

Only $19.95

Ready for immediate shipping.

Geodes: Nature's Treasures
Table of Contents

Foreword
vii
Acknowledgements
ix
Introduction
xi
About the Authors
xii
     

PART I: Gifts from Ancient Volcanoes

1

Chapter 1: What are Geodes?

3

Chapter 2: The Mysterious Formation of Geodes in Igneous Rocks

5

Chapter 3: Inedible Coconuts: Mexican Coconut Geodes

11
    Mineralogy 16 - How Are "Coconuts" Formed? 26 - Mining Operations 30 - Opening "Coconuts" 39

Chapter 4: When Geodes are Gems

43
    Brazilian Amethyst Geodes 43 - Mineralogy 48 - Mining 49 - Opening Brazilian Geodes 53 - Heat Treatment 53 - Flowers 57 - Valuing 58 - Uruguayan Amethyst Geodes 58 - Mining 58 - "Stalactites" and "Bulbs" 59

Chapter 5: More Latin Surprises

61
    Tabasco Geodes 61 - Trancas Geodes 63 - San Marcos Geodes 68 - The Geodes of Salto do Jacui 71 - Ocos 74

Chapter 6: Geode Curiosities

77
    Polyhedroids 77 - Enhydros 79
     

PART II: Gifts from Prehistoric Seas

83

Chapter 7: From Sediments to Glamour

85
    Some Definitions 87 - Theories of Origin 91 - Variations 92

Chapter 8: Wonderful Warsaw

95
    Physical Characteristics and Inclusions 95 - Origins and Locations 98 - Types of Sedimentary Geodes 104 - Illinois Geodes 105 - Missouri Geodes 106 - Quartz in Geodes 108 - Calcite in Geodes 109 - Beautiful Common Inclusions 111 - Keokuk's Northern Cousins 116 - How to Find and Enjoy Geodes 117 - Opening, Preparing, and Showing Sedimentary Geodes 119 - My Thoughts About Midwest Geodes 121

Chapter 9: Strange Geodes of Indiana

123
    Recognizing Geodized Fossils 134

Chapter 10: A Few Bonuses

137
    Silicified Anhydrite's Fossil Family 140 - Tennessee 144

Chapter 11: Amethyst Surprises and Baby Rattle Rocks

151
    Lapidary Treatment 156 - Baby Rattle Rocks 159

Chapter 12: Florida's Ocean Harvest

167
    Florida's Ample Bonuses 181

Chapter 13: Not Always Quartz

185
    South Dakota Barite 188 - From Celestite to Iron 190

Chapter 14: Strange, Stranger, Strangest

197
    Bitumen 201 - Poison 204
     

PART III: Thundereggs and More

205

Chapter 15: Dozens of Eggs

205
    United States 212
        Oregon 212 - Idaho 217 - California 218 - Utah 218 - Nevada 221 - Arizona 221 - New Mexico 222 - Colorado 223 - Alaska 224
    Mexico 225
        "Galaxy Geodes" 225 - "Ocotillo Geodes" 225 - "Palomas Geodes" 229 - "Red Skin or New Chalce Geodes" 230 - "San Juan Geodes" 230 - "Tamaka Geodes" 230 - "Zacatecas Geodes" 231 - Blue Chalcedony 231
    Canada 232
        British Columbia 232
    Opening Thundereggs 233

Chapter 16: Almost Geodes: Concretions and Septarians

235
    Ammolite: Canada's Fossil Gem 237 - More Concretions 239 - Utah's Gem Concretions 240 - Illinois' Fossil Concretions 240 - Utah's Septarian Nodules 243 - South Dakota's Septaria 246 - Concretions of Oklahoma 249 - Other Septaria 249
   
    Summary
253
    Geologic Time Scale
254
    Frequently Asked Questions About Geodes
255
    Bibliography
261
    Glossary
273
    Index
281

 

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