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Contents

INTRODUCTION.. 7

JASPER, AGATE, OPAL AND OTHER DEFINITIONS. 8

AN INFRARED SPECTROSCOPY STUDY OF THE AGATES. 9

Agate, Jasper, Opal, Chert Identifications in Infrared. 12

Jasper Reference. 13

Major Agate, Jasper, and Opal Source Identifications. 15

Anatolia Lavender Agate--Turkey. 15

Angelwing—Cady Mtns., CA.. 16

Anhydrite Prism agate—Ankara, Turkey. 17

Aventurine-Verdite. 19

Bertrandite (Tiffany Stone) 23

Biggs Jasper. 24

Birdseye Agate—Wyoming. 25

Bitumen-Agate—Santa Monica Mtns., CA.. 26

Black Agate—Fort Irwin, CA.. 28

Black Agate—Marfa, TX. 29

Black Agate—Chihuahua, Mexico. 30

Black Jasper—Gem Hill, CA.. 31

Bog—Lonely Butte, CA.. 33

Boron, CA Green Jasper. 35

Boron, CA Green Common Opal 36

Bruneau Jasper Geode--Oregon. 37

Boulder Opal—Australia. 38

Brazilian Amygdule Agate. 39

Buchanan Geode—Buchanan, OR. 41

Bugeye Rhyolite (Victorville, CA) 42

Butterfly Jasper/Butterfly Rhyolite—Mexican Thundereggs. 43

Calcite fan—Laguna, Mexico. 44

Carnelian—Kanan Road, Agoura, CA.. 45

Chalcedony—Boron, CA.. 47

Cambria Geode—Cambria, CA (Hwy. 58) 48

Chapinite—Fort Irwin, CA.. 50

Cheetah Jasper—Peru. 51

Chert—Burro Creek, AZ. 52

Chipboard. 53

Chrysoprase—Australia, Turkey. 54

Citron Chrysoprase. 55

Copper Agate—Stony Creek, CA (Black Rock Reservoir) 56

Coral—Tampa, FL. 57

Coral—Locus Creek, West Virginia. 58

Dalmatian Jasper—Mexico. 59

Diatomite (Chalk)—Chico, CA and Santa Monica Mtns., CA.. 60

Dinosaur Dung (Coprolite)--Utah. 61

Dogtooth  Lace Agate--Mexico. 63

Donnybrook Geode Snowflakes—Buchanan, OR. 64

Dryhead agate nodule—Dryhead Canyon, South-Central Montana. 66

Egyptian Jasper nodule—Egypt 67

Feather Agate--Ochos, Brazil 68

Fire Agate—Southwestern U.S. 69

Fire Opal—Wello, Ethiopia. 70

Fisheye Rhyolite—Quartzsite, AZ. 71

Frosting. 72

Gary Green Jasper—Owyhee, OR. 74

Gem Silica. 76

Geode Agate—Dugway, UT. 77

Geode Shells—China Lake, CA.. 78

Geyserite—Milford, UT Opal 79

Gizzard Stones—Colorado River. 80

Gobi Agate—Gobi Desert, Western China. 82

Gobi Agate—Gobi Desert, Western China. 83

Goethite Sagenite—Boron, CA.. 84

Graveyard Point, OR Plume Agate. 85

Greybull Nodules—Greybull, WY. 86

Holly Blue Agate--Oregon. 87

Horse Canyon Agate—Tehachapi, CA.. 88

Hyalite--Czechoslovakia. 90

Imperial Jasper--Mexico. 92

Indian Blanket Jasper—Death Valley, CA.. 93

Indian Tree Agate--India. 94

Iris Agate—Agoura, CA.. 95

Jasper-agate—Lavic, CA.. 97

Jasper-opal—Chihuahua, Mexico. 98

Jasper—Pennsylvania. 99

Kabamba Jasper—Madagascar. 100

Keokuk, Iowa Geodes. 101

Lamellar Agate—Fort Irwin, CA.. 103

Lamellar Agate—Agoura, CA.. 104

Leopardskin Jasper—Australia. 105

Little Naches Geode—Oregon. 106

Luna Agate—Mexico. 107

Magnetite—in Geodes, Chihuahua, Mexico. 108

Marcasite-agate—Santa Monica Mtns., CA.. 109

Melanophlogite—Santa Monica Mtns., CA.. 111

Melanophlogite—San Andreas Fault System, San Jose, CA.. 113

Mexican Lace Agate. 115

Moganite (Lutecite, Quartzine) in Chalcedony. 117

Mookaite—Australia. 119

Mookaite—Nevada. 120

Moss Jasper—Boron, CA.. 122

Mtorolite—Zimbabwe. 123

Myrickite (silica-cinnabar)—B and B cinnabar mine, near Fish Lake, NV. 124

Namibian Blue. 125

Noreena Jasper—Western Australia. 127

Novaculite--Arkansas. 128

Ocean (Madagascar) Jasper. 129

Ochocos Agate—Ochocos Mtns., OR. 130

Oolitic Agate (Pisoliths) 131

Oolitic Chert (Prairie Agate) 132

Opal-blue. 133

Opal—Opal Mountain, CA.. 134

Opal—Opal Mountain, CA.. 135

Opalite—Kramer, CA.. 136

Opalite—Dendritic Orange. 138

Opalite-Green Australian. 139

Orbicular silica—San Gabriel Mtns., Glendora, CA.. 140

Owyhee Jasper—Owyhee, OR. 141

Owlshead Sagenite Agate—Owlshead Mtns., CA.. 142

Paint Agate (Candy Striper)—Lake Superior Region. 143

Petrified Wood—Holbrook, AZ Rainbow Agate. 145

Petrified Wood—Holbrook AZ, Yellow Jasper. 146

Petrified Wood—Last Chance Canyon, CA.. 147

Petrified Wood—Sweet Home, OR. 149

Pink Opal--Peru. 152

Plasma Agate--Clear Creek, CA.. 154

Polish Flint 155

Polka Dot Agate—Oregon. 156

Polyhedral Agate. 157

Poppy Jasper—Hornitos, CA, large orbs. 158

Poppy Jasper—Hornitos, CA, fine orbs. 159

Poppy Jasper—Morgan Hill, CA.. 160

Poppy Jasper—Stony Creek, CA.. 161

Porcellanite with gypsum.. 163

Precious Opal—Cooper Pedy, Central Australia. 164

Precious Opal—Mexican Orange opal 165

Psilomelane Agate--Mexico. 167

Purple Passion Agate--Burro Creek, AZ. 168

Purple Sage—North-Central Nevada. 169

Radiolarites. 170

Rainbow Ridge, CA Agate. 174

Rainforest Jasper—Mt. Hay, Australia. 175

Rhodonite. 177

Rose Quartz Limb Cast Replacement—Sheep Springs, NV. 178

Semi-precious opal--Mexico. 179

Siderite hemisphere—Laguna, Mexico. 181

Skip ‘N Atom (Sericite Agate)—Lake Superior, WI 182

Snakeskin Agate—Mojave Desert, CA.. 183

Snakeskin Agate—Fort Irwin, CA.. 184

Snakeskin Agate—Rome, OR. 185

Spiderman Jasper--Oregon. 186

Spiderweb Jasper—Owyhee, OR. 187

Starburst jasper. 188

Stone Canyon Jasper—Stone Canyon, CA.. 190

Stromatolite—Mary Ellen Mine, MN jasper. 191

Tee Pee Canyon Agate—chert shell 192

Thomsonite. 193

Tiger’s Eye. 194

Trent Agate—Trent, OR. 196

Turkeytail Geode—Maury Mtn., OR. 202

Unakite. 203

White Fir Springs Jasper. 205

Wiley’s Well, CA lithophysae caprock. 206

Wonderstone—Gemfield, NV. 207

Wonderstone—Gilbert, NV. 208

Agate, Jasper, and Opal Inclusion and Structure Identifications. 210

Bladed Mineralization—low cristobalite. 210

Bladed Mineralization—calc-silica2. 211

Chlorite Curls. 212

Clinoptilolite-heulandite (Zeolite)—Fallen Tree Claim, OR. 213

Collapse Breccia—Calc-silica-2. 215

Goethite (Iron Oxide) 216

Humic Acid. 217

Icicle Structures. 218

Iron (Hematite) 219

Manganated agate—Durango, Mexico. 220

Mordenite (Zeolite)—Fallen Tree Claim, OR. 222

Moss agate geode—Lucky Strike Mine, OR. 225

Native Iron-Agate—Chihuahua, Mexico. 226

Plumose Yellow Jasper. 227

Plume Structures—Boron, CA.. 228

Plume Structures—Brazilian amygdule. 230

Plume Structures—Nyssa, ID.. 231

Prismatic Crystal Pseudomorphs—Mexico and Turkey. 232

Sagenitic Calcite Hemispheres. 234

Sagenitic Goethite. 235

Sagenitic Siderite—Laguna, Mexico. 236

Shells—Opal, Southern Brazil 237

Shells—Clay, Malibu Beach, CA.. 238

Tube Structures—Richardson’s Ranch, Blue Bed, OR Geode. 239

Waterlines. 240

Waterlines. 241

Clay Structures in the Agates, Jaspers, and Opals. 242

Celadonite. 242

Chlorite. 243

Glauconite. 246

Hectorite. 247

Illite. 249

Illite (Moss Jasper)—Cady Mtns., CA.. 250

Kaolinite (Porcellanite) 252

Montmorillonite (Bentonite) 254

Saponite. 255

Sericite (Illite-Smectite-Muscovite) 256

Sericite (Illite-Smectite-Muscovite) 257

Carbonates, Barites, Apatites Identified as Agates and Jaspers. 258

Barite-Silica. 258

Barite-Silica. 259

Bumblebee Jasper (Bumblebee Agate)—Indonesia. 260

Calc-Jasper-2 and Barite. 261

Calc-Opal—Boron, CA calcite and opal 263

Calc-silica-1—Big Diggins, NM... 265

Calc-silica-2—Calcite wall, agate core. 266

Calc-Silica-2—Boron, CA ooid agate. 266

Calc-silica-2—Fossil Reeds (Mule Canyon, CA) 268

Calc-silica-1—Plumose Calcite-Agate. 269

Calc-silica-1—Sagenitic Calcite Agate Shell, Agate core. 270

Calc-silica-2—Sagenite—Cady Mtns., CA.. 271

Calc-Silica-1—Stonyford, CA jasper. 272

Coral Fossil—Carbonate. 273

Dinosaur Bone—Apatite-Silica. 274

Dolo-silica-2 and Dolomite—Boron, CA.. 275

Laguna Lace Agate--Mexico. 277

Las Choyas, Mexico Geodes. 278

Lattice Agate—barite-silica. 279

Mag-silica-1—magnesite and silica. 280

Mag-silica-2—magnesite and silica. 281

Moroccan Septarian Nodules. 282

Pristine™—Nevada Magnesite. 285

Silver Lace Onyx—calc-silica-1. 286

Stefoinite—Boron, CA.. 287

Strawberry Onyx. 288

Utah Septarian Nodules. 289

Verde Antique Marble. 290

Whale Bone—Silicated—Santa Barbara, CA.. 291

Youngite—Guernsey, Wyoming. 292

Zebra Marble—Milford, UT. 294

Volcanic Rock Types. 295

Andesite symplectite—La Jolla, CA.. 295

Australian Leopardskin Jasper. 297

Basalt 298

Basanite. 300

Bentonite. 301

Dacite—Mt. St. Helens. 302

Dacite—Hinkley, CA (West of Barstow, CA) 303

Impact Glass—Libyan Desert Glass. 305

Moldavite—Czech Republic. 306

Mushroom Rhyolite—Cambria, CA.. 307

Obsidian Spherulites. 308

Orthoclase—Laguna, Mexico geode shells. 309

Perlite—Rhyolite—Wiley’s Well, CA perlite dome deposit 310

Perlite—Obsidian. 312

Pumice (white)—Mono Lake, CA, and black pumice. 313

Rhyolite Shell (Geode)—Richardson’s Ranch, OR. 315

Sanidine Shell (Geode)—St. Egidien, Germany. 316

Snowflake Obsidian. 317

Tektites. 319

Volcanic Tuff 320

Man-made Materials. 321

Calsilica (Rainbow Calsilica) 321

Goldstone--Italy. 322

Laboratory (Lab) Opal 323

Misidentified Silicates. 324

Green Silicate. 324

Green-Grey Silica. 325

Mariposite—Sierra Nevada Mtns., CA.. 326

THANKS. 327

KASPER JASPER PRESS TITLES. 328

 

 

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