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Agates Inside Out

 
Agates Inside Out Agates Inside Out by Karen A. Brzys.

Agates Inside Out is a wonderful book that introduces you to the world of agates. What are they? How do they form? What mysteries do their colorful patterns reveal? Where to look for them? What types of agates can be found there? Lots of great photos, charts and diagrams. Written so that almost anyone with an interest can learn.

This book is a 6" x 9" paperback with 246 pages.

Only $24.95

Ready for immediate shipping.

Agates Inside Out
Table of Contents

    Dedication
vi
    Acknowledgements
vii
    Introduction
viii

Chapter 1: What is an Agate?

1
    A Basic Description
1
    Agates and Human History
2
    Agates and Their "First Cousins"
4
        Macrocrystalline Quartz
4
        Fibrous Microcrystalline Quartz
8
        Granular Microcrystalline Quartz
9
        Silicified Fossils
10
    Quartz Properties
14

Chapter 2: How Did Agates Form?

16
    The Earth - In the Beginning
16
    Agate Formation
21
    Inflow Agate Genesis Theory
24
        Possible Sources of Silica
28
        Silica Transport
31
        Infiltration Channels
34
        Concentric Banding
41
        Horizontal Banding
55
    Silica Gel Agate Genesis Theory
57
    Agate Genesis Conclusions
60
        Silica Gel Theory
60
        Inflow Theory
62
    Types of Host Rock
65
        Igneous Rock Agates
67
            Amygdaloidal Agates
67
            Rhyolitic Agates
70
        Sedimentary Rock Agates
73
    Timing of Agate Formation
76

Chapter 3: How Do You Find Agates?

82
    A Pocket Filled In
88
    Banding and Other Patterns
90
    Translucency
93
    Color
95
    Shape, Size, and Weight
106
    Luster
109
    Husk
112
    Connective Channels
118
    Pseudobands
120
    Agate-Want-to-Be
122
        Chert, Flint, and Jasper
122
        Metamorphic Rocks
126
        Secondary Fills
127
        Silicified Fossils
128
        Other Agates-Want-to-Be
132
    Caring For and Cleaning Agates
135
    Assessing the Value of Agates
138

Chapter 4: What Are the Different Types of Agate?

139
    Botryoidal (Grape) Agates
139
    Brecciated (Mosaic) Agates
140
    Candy Striped Agates
141
    Carnelian Agates
142
    Cloud Agates
144
    Crazy Lace Agates
144
    Dendritic Agates
146
    Enhydro (Water-Filled) Agates
150
    Eye Agates
151
    Fire Agates
156
    Flame Agates
158
    Floater Band Agates
159
    Fortification Agates
159
    Geode Agates
161
    Iris (Rainbow) Agates
162
    Jasper Agates
165
    Moss Agates
165
    Paintstone Agates
168
    Peeler Agates
168
    Plume Agates
170
    Polyhedroid Agates
172
    Pseudomorph Agates
173
    Ruin Agates
174
    Sagenite Agates
175
    Sardonyx
177
    Seam Agates
178
    Shadow Agates
180
    Stalk Aggregate Agates
182
    Thunder Egg Agates
182
    Tube Agates
184
    Water-Level Agates
186

Chapter 5: Where Can You Find Agates?

187
    A Selection of United States Agates
187
        California
190
        Florida
191
        Idaho
192
        Iowa
193
        Kentucky
194
        Michigan
196
        Minnesota
198
        Missouri
200
        Montana
201
        New Mexico
203
        Oregon
204
        South Dakota
207
        Texas
210
        Wyoming
211
    A Selection of International Agates
212
        Argentina
212
        Australia
215
        Botswana, Africa
216
        Brazil
218
        Canada
220
        Caribbean
223
        China
225
        Mexico
227
   
    References
231
    Index
239
    Museum Information
243
    How to Vote for Your Favorite Photograph
244
    Information About Agate DVDs and Other Products
244
    Rock Hunting Log
245

 

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