| Name |
Natural |
Points |
Also known as |
Variations |
|
Abique Agate |
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Absaroka Chert |
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Agate Jasper |
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Akmalik Chert |
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EMF Chert and Black
Lisburne |
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Aleman Ribbon Chert |
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Algic Chert |
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Alibates Agatized
Dolomite |
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Allen Creek Chert |
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Allendale Chert |
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Costal Chert |
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Allentown
Chert |
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Alma Quartzite |
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Buffalo County Quartzite
and Lacross County Quartzite |
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Amabel Formation
Chert |
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Ancaster Chert |
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Lockport Chert and Goat
Island Chert |
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Animikie Chert |
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Anna Chert |
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Antelope Chert |
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Antietam Quartzite |
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Antietam Schist,
Erwin-Antietam Quartzite, Erwin Quartzite |
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Aquia Orthoquartzite |
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Arcadia Quartzite |
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Arenaceous Silicified Siltstone |
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Argentine Chert |
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Argillite |
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Arkansas River
Chert |
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Arlington Chert |
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Armuchee Chert |
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Arnolds Valley
Jasper |
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Rockbridge Jasper |
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Attica Chert |
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Indiana Greenstone and
Independence Chert |
|
|
Avon Chert
(Illinois) |
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Avon Chert |
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Bach
Creek Chert |
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Badlands Chalcedony |
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Bailey Chert |
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Bald Eagle Jasper |
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Houserville Jasper |
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Balmorhea Blue Agate |
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Balsam Lake
Speckled Chert |
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|
Bobcaygeon Chert (Upper) |
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Banded Jasper |
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Banded Slate |
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Bangor Agate |
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St. Louis |
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|
Bangor Chert |
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Baraboo Quartzite |
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Barren Fork Chert |
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|
Basalt |
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|
Battiest Chert |
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Battle
Mountain Chalcedony |
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Bay Bottom Chert |
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Baylis Chert |
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Bayport Chert |
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Bees Wax Chert |
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Belleville
Chalcedony |
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Bethany Falls Chert |
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Big Brook Chert |
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Bigfork Chert |
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Bijou Hills
Quartzite |
|
|
Ogallala Orthoquartzite |
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Bird Cove Chert |
|
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Bisher Chert |
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Biwabik Silica |
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Black Hills Flint |
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|
Blair / St. David
Chert |
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Blalock Sandstone |
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Blanding Chert |
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Bloomville Chert |
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Blue Gray Fort
Payne Chert |
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Blue Hills River
Felsite |
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Blue Jasper |
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Blue River Agate |
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Blue Springs Chert |
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Bobcaygeon Chert |
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Marmora Chert and Trent
(Valley) Chert |
|
|
Bois Blanc
Formation Chert |
|
|
Colborne Chert, Haldimand
Chert, Port Colborne Chert and Saugeen Chert |
|
|
Bolsa Quartzite |
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|
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|
Bonnefont Jasper |
|
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Boone Chert |
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Bourne Chert |
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Bowling Green Chert |
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Bowman Chert |
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Braintree Hornfels |
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Brassfield Chert |
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Cliffton Agate |
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Brazos River Chert |
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Breathitt Chert |
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Breccia Quartzite |
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Brecciated Jasper |
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Bridge River Chert |
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Brier Creek Chert |
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Briggs Jasper |
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Broad Run
Chalcedony |
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Brook Run Jasper |
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Brown County Chert |
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|
Browns Pass
Quartzite |
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Broyle Chert |
|
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Brush Creek Chert |
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Brushy Basin Chert |
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Brushy Creek Chert |
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Brushy Creek Black Flint |
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|
Bryantsville Chert |
|
|
Burton Chert |
|
|
Buffalo Chert |
|
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Buffalo River Chert |
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Burlington Chert |
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Burns Jasper |
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Burro Canyon Chert |
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Burro Mesa Chert |
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Burroughs Quartzite |
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Buttahachie River Chert |
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Cabot Head Chert |
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|
Bruce Chert |
|
|
Calcasieu Citronella |
|
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|
Calico Hills Chert |
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Camden Chert |
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Candy Creek Chert |
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Canutillo Chert |
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Carnelian Agate |
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Catahoula Chert |
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Cat Head Chert |
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Cave Creek Jasper |
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Cave in Rock Chert |
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Caviar Chert |
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Cay Creek Chert |
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Cecil Black Chert |
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Cedar Hill Chert |
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Cedar Valley Chert |
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Rapid Chert |
|
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Cedarville Chert |
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Chadron Chert |
|
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Chaumont Chert |
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|
Chepultepec Chert
(Knox Chert Variation) |
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|
Cherry
Valley Silicified Shale |
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|
Cheshire Quartzite |
|
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|
Chickachoc Chert |
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|
Choctaw Agate |
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Chouteau Chert |
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Chuska Mountain Chert |
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|
Washington Pass Chert and
Narbona Pass Chert |
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|
Cico Chert |
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Citronelle Chert |
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Clear
Creek Chert |
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Coaldale Chert |
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Coastal Plains
Chert |
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Cobden Chert |
|
|
Anna Chert, Hornstone and
St. Louis Ball Chert |
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|
Cochrane Chert |
|
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Cod Island Chert |
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Mugsford Chert |
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|
Coffee Creek Chert |
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Cohansey Quartzite |
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|
Colchester Jasper |
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Colha Grey
Chalcedony |
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|
Collingwood Chert |
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|
Comanche County
Chert |
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Conasauga Chert |
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Copper Ridge Chert
Knox Chert variant |
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Cordell Chert |
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|
Cortez
Silicified Sediment |
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|
Coshocton Chert
Upper Mercer Chert variation |
|
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Cotter Chert |
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Cottonwood Chert |
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Cow Plop Chert |
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|
Scarborough
Ranch Chert |
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Cows Head Chert |
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Coxsacki Chert |
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Coyote Creek Chert
(Burlington Chert variant) |
|
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|
Crab Orchard Banded
Chert |
|
|
Gray Banded Chert and Jelly
Roll Chert |
|
Crescent Chert
(Burlington Chert variant) |
|
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Cripple Creek Chert |
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Crooksville Chert |
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Croton Tabular
Chert |
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|
Warsaw Tabular Chert |
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|
Crowley's Ridge
Chert |
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Crushman Chert |
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Crystal Quartz |
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Cuesta Quartzite |
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Cumbres Pass Chert |
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Curzon Chert |
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Dactite |
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Arrow Stone |
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|
Dakota Quartzite |
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Dakota Orthoquartzite |
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Day Creek Chert |
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Dean Lake Chert |
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Deep Kill Chert |
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Degonia Chert |
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Delaware Chert |
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Denby Flint |
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Dendritic Agate |
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Dentric Chert |
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Derby Chert |
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Deschambault Chert |
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Deschutes Jasper |
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Diana Quartz |
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Ditney Chert |
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Dongola Chert |
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Dover Chert
Fort Payne variant |
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Dripping
Springs Quartzite |
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Drusy Chert |
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Dunnville Chert |
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Durham Jasper |
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Eagle Hill
Solidified Wood |
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Eagle Point Chert |
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Eastport Chert |
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Edgecliff Chert |
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Edwards Plateau Chert |
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Elco Chert |
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Ellensburg
Blue Chalcedony |
|
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Elmono Chert |
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Elwood - Joliet
Chert |
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|
Elwood Chert and Joliet
Chert |
|
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Enhydro Agate |
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Ervine Creek Chert |
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Esopus Chert |
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Etherington Chert |
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Etiuluk Chert |
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Everett Chert |
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Everson Creek Chert |
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Everton Chert |
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Excello Chert |
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Eye Agate |
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Fairburn Agate |
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Fall Creek Chert |
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Fayetteville Chert |
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Felsite |
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Ferdinand Chert |
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Fern Glenn Chert |
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Fernvale Chert |
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Ferruginous
Quartzite |
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Fishpot Chert |
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Flattop Butte
Chalcedony |
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Fleming Chert |
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Flint Hill Chert |
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Flint Ridge Chert /Chalcedony |
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|
Van Port Chert, Raccoon
Creek Chert and Ribbon Flint |
|
|
Flint River Chert |
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Flint Run Jasper |
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Florence Chert
Type A and B |
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Florence County Fort Payne Chert |
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Floyds Knob Chert |
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Foraker Chert |
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Four Ace Chert |
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Ford Lake Chert |
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Fort Ann Chert |
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Fort Hood Chert |
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Fort Payne Chert |
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Fort Riley Chert |
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Fossil Hill Chert |
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Collingwood Chert, White
Chert |
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Four Mile Creek
Chert |
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Franciscan Chert |
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Frisco Chert |
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Frog
Mountain Chert |
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Fusulinid Chert
(Winterset Chert) |
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Galena Chert |
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Platteville-Galena Chert |
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Gallagher Flint |
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Garden City Chert |
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Georgetown Chert |
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Gettysburg Rhyolite |
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Geysers - Clear Lake Chert |
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Clear Lake Chert, Geysers
Chert |
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Goat Island Chert |
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Goldfield Jasper |
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Gordon Lake Chert |
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Gowganda
Foundation Siltstone |
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Gowganda Formation Mudstone |
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Grand Falls Chert |
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Grand Meadow Chert |
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Grassy Knob Chert |
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Graywacke |
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Green Metasiltstone |
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Green Silicified Slate |
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Greenbrier Chert |
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Grime Hills Chert |
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Grover Chert |
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Gull River
Chert (Upper) |
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Trent (Valley) Chert |
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Gull River Chert
(Lower) |
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Gun Flint Silica |
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Brandon Flint |
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Hale Chert |
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Hand Hill Chert / Agate |
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Haney Chert |
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Harbert Hills Chert |
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Hardyston Jasper |
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Hardyston Quartzite |
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Hardyston Chalcedony |
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Harmilda Chert |
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Harriman Chert |
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Harrodsburg Chert |
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Hart River Chert |
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Hartline Chert |
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Hartville Chert |
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Harvester Creek
Chert |
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Hat Creek Jasper |
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Hathaway Chert |
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Helderberg Chert |
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Helena Chert |
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Helitrope (Bloodstone)
Jasper |
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Bloodstone Jasper |
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Hickory Corner Silicified Sandstone |
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High Plains Chert |
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High View Chert
Burlington Chert variant |
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Hillsborough Chert |
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Hillsdale Chert |
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Hingham Felsite |
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Hixton Silicified Sandstone / Quartzite |
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Sugar Quartz |
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Hogback Quartzite |
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Holland Chert |
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Holley Blue Agate |
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Holly Blue Agate |
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Honey Creek Chert |
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Hopkinsville Chert |
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Hopkinton Chert |
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Hornfels |
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Horse Creek Chert |
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Pickwick Chert and Lost
Quarry Flint |
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Hoyt Chert |
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Hozomeen Chert |
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Hozomeen Jasper |
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Hozomeen Quartzite |
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Hudson Bay
Lowland Chert |
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Hunterville Chert |
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Hydroquartzite |
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Illinois Agate |
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Imnaitchiak Chert |
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Indian Creek Chert /
Richland Chert |
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Richland Chert |
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Indiana Green Chert |
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Indiana Hornstone |
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Indiana / Kentucky Blue
Chert, Harrison County Flint |
|
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Ives
Conglomerate Chert |
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Jack Creek Quartzite |
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Jasper Taconite |
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Jefferson City
Chert |
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Jefferson County Fort Payne Chert |
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Jeffersonville Chert |
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Jelly Roll Chert |
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Johns Valley Shale |
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Julian Chert |
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Kakabeka Chert |
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Kakabeka Quartzite |
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Kalkberg Chert |
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Kanawha Black Chert |
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Kankakee Chert |
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Kansas Blue Chert |
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Kaolin Chert |
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Kaumajet Chert |
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Kaumajet Jet
Black Chert |
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Kay County Chert |
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Kenneth Chert |
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Kentucky Black
Chert |
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Kentucky Hornstone |
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Kentucky
Maldraugh Chert |
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Keokuk Chert |
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Kettle Point Chert |
|
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Port Franks Chert /
Chalcedony |
|
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Khukitan Depalite |
|
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Kiamichi Chert |
|
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Kimball Chert |
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Kincaid Fossiliferous Chert |
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|
|
|
|
Kineo Felsite |
|
|
|
|
|
Knife Lake
Siltstone |
|
|
|
|
|
Knife River Flint |
|
|
Knife River Chert, Knife
River Chalcedony |
|
|
Knife
River Silicified Peat |
|
|
|
|
|
Knox Chert |
|
|
Ridge and Valley Chert |
Chapultepec, Copper Ridge, and Longview Chert |
|
Kornthal Chert |
|
|
|
|
|
Kremmling Chert |
|
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|
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|
Kuna Chert |
|
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|
Laberdie Chert |
|
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|
|
|
Lafayette Chert |
|
|
|
|
|
Lake of the
Woods Chert |
|
|
|
|
|
Lake of
the Woods Rhyolite |
|
|
|
|
|
Lake Superior Agate |
|
|
|
|
|
Lambrix Chert |
|
|
|
|
|
Lamoine Chert |
|
|
|
|
|
Lange Agate |
|
|
|
|
|
Laray Chert |
|
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|
|
|
LaSalle Chert |
|
|
|
|
|
Laurel Chert |
|
|
|
|
|
Lead Creek Chert |
|
|
Rockport Chert |
|
|
Ledge River Chert |
|
|
|
|
Leithsville Chert
(Califon Member) |
|
|
|
|
Leithsville Chert
(Hamburg Member) |
|
|
|
|
Leithsville Chert
(Wallkill Member) |
|
|
|
|
|
Leon River Chert |
|
|
|
|
|
Licking River Chert |
|
|
|
|
|
Lieber Chert |
|
|
|
|
|
Lime Rock Jasper |
|
|
|
|
|
Limonite |
|
|
|
|
|
Lisburne Chert |
|
|
|
|
|
Liston Creek Chert |
|
|
|
|
|
Little
Cattail Creek Chert / Chalcedony |
|
|
Williamson Chert |
|
|
Little
Chicamunga Chert |
|
|
|
|
|
Little Falls Chert |
|
|
|
|
|
Little Heart
Chalcedony |
|
|
|
|
|
Livengood Chert |
|
|
|
|
|
Llano Chert |
|
|
|
|
|
Lockatong Chert |
|
|
|
|
|
Logan County Chert |
|
|
|
|
|
Longview Chert (Knox
variation) |
|
|
|
|
|
Lost River Chert |
|
|
|
|
|
Loyalhanna Chert |
|
|
|
|
|
Madison Banded Chert |
|
|
Montana Chert |
|
|
Malheur Chert |
|
|
|
|
|
Manitoulin
Formation Chert |
|
|
|
|
|
Maquoketa Chert |
|
|
|
|
|
Marblehead Felsite |
|
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|
|
|
Marcellus Green Chert |
|
|
|
|
|
Mattapan Felsite |
|
|
|
|
|
Mayfield Chert |
|
|
|
|
|
Maynes Creek Chert |
|
|
|
|
|
McCann Hill Chert |
|
|
|
|
|
McKittrick Chert |
|
|
|
|
|
Meadow Mountain
Chert |
|
|
|
|
|
Metarhyolite |
|
|
|
|
|
Mill Creek Chert |
|
|
|
|
|
Minnelusa Quartzite |
|
|
|
|
|
Miongin Coble Chert |
|
|
|
|
|
Mistassini Quartzite |
|
|
Albanel Quartzite |
|
|
Mitchell Chert |
|
|
|
|
|
Mitchell Chert
(Virginia) |
|
|
|
|
|
Mogollon
Mountain Chert |
|
|
|
|
|
Mogothy Quartzite |
|
|
|
|
|
Mohave Desert Chert |
|
|
|
|
|
Moline Chert |
|
|
|
|
|
Monongahela Chert |
|
|
|
|
|
Montana Porcellanite |
|
|
|
|
|
Monteagle Chert |
|
|
|
|
|
Monterey Chert |
|
|
|
|
|
Montrose Chert |
|
|
|
|
|
Morgan Hills Jasper |
|
|
Poppy Jasper |
|
|
Morrison Chert / Siltstone |
|
|
|
|
|
Morrison Quartzite |
|
|
|
|
|
Morrisonite |
|
|
|
|
|
Morrow Mountain
Rhyolite |
|
|
|
|
|
Moss Agate |
|
|
|
|
|
Mounds Gravel Chert |
|
|
|
|
|
Mount
Independence Chert |
|
|
|
|
|
Mount Jasper
Rhyolite |
|
|
|
|
|
Mount Merino Chert |
|
|
|
|
|
Mount Rodgers
Rhyolite |
|
|
|
|
|
Mount Willard Chert |
|
|
|
|
|
Mozakite Chert |
|
|
|
|
|
Muldraugh Chert |
|
|
|
|
|
Munsungun Lake
Chert |
|
|
|
|
Mustard Chert
(Fort Payne variant) |
|
|
|
|
|
Nanticoke Chert |
|
|
|
|
|
Nehawka Chert |
|
|
Rice Grain Chert and
Pennsylvanian Chert |
|
Nellie Blue Chert
(Upper Mercer Chert variant) |
|
|
|
|
|
Nethers Chert |
|
|
Flint Ridge Nethers Chert |
|
|
Neva Chert |
|
|
|
|
|
New Braunfels Chert |
|
|
|
|
|
Newala Chert |
|
|
|
|
|
Newark Jasper |
|
|
Iron Hill Jasper |
|
|
Niobrara Chert |
|
|
|
|
|
Normanskill Chert |
|
|
|
|
|
North Hood Chert |
|
|
|
|
|
Norwood Chert |
|
|
|
|
|
Nottoway River
Quartzite |
|
|
|
|
|
Novaculite |
|
|
|
|
|
Oak Lake Chert |
|
|
|
|
|
Obryan Chert |
|
|
Southern Vanport Chert |
|
|
Obsidian |
|
|
Volcanic Glass |
Mahogany Obsidian, Snowflake Obsidian, Green
Obsidian |
|
Ocala Chert |
|
|
|
|
|
Ogalla Quartzite |
|
|
|
|
|
Ogallala
Orthoquartzite |
|
|
Bijou Hills Silicified
Sediment and Sugar Rock |
|
|
Old Blue Chert |
|
|
|
|
|
Olitio Quartzite |
|
|
|
|
|
Olive Chert |
|
|
|
|
|
Oneota Chert |
|
|
|
|
|
Onondaga Chert |
|
|
Buttermilk Falls Chert |
|
|
Ontelaunee Chert |
|
|
|
|
|
Oolitic Agate |
|
|
|
|
|
Oolitic Chert |
|
|
|
|
|
Oolitic Quartzite |
|
|
Harpers Valley Quartzite |
|
|
Opaline Chert |
|
|
|
|
|
Opalized Wood |
|
|
|
|
|
Oregon Jade |
|
|
|
|
|
Oriskany Chert |
|
|
|
|
|
Oriskany
Silicified Sandstone |
|
|
|
|
|
Orthoquartzite |
|
|
|
|
Orthoquartzite
(east) |
|
|
|
|
|
Otuk Formation
Chert |
|
|
|
|
|
Ouchita Chert |
|
|
|
|
|
Owl Creek Chert |
|
|
|
|
|
Paiute Agate |
|
|
|
|
|
Palmwood |
|
|
|
|
|
Paoli Chert |
|
|
Carter Cave Chert |
|
|
Paris Chert |
|
|
|
|
|
Patuxent - Mattaponi Quartzite |
|
|
Mattaponi Quartzite |
|
|
Pawnee Creek Gravel |
|
|
|
|
|
Payson Chert |
|
|
|
|
|
Pedernales River Amoeba Chert |
|
|
Amoeba Chert |
|
|
Penns Creek Chert |
|
|
|
|
|
Penters Chert |
|
|
|
|
|
Peoria Chert |
|
|
|
|
|
Perkins Chert |
|
|
|
|
|
Perth Chert |
|
|
|
|
|
Petrified Bog |
|
|
|
|
|
Petrified Wood |
|
|
Agatized Wood, Opalized
Wood |
|
|
Petty Agate |
|
|
|
|
|
Phase Chert |
|
|
|
|
|
Pierson Chert |
|
|
|
|
|
Pine Tree
Brook Felsite |
|
|
|
|
|
Piner Chert |
|
|
|
|
|
Pipe Creek Chert |
|
|
Tenmile Creek Chert |
|
|
Pitkin Chert |
|
|
|
|
|
Plate Chalcedony |
|
|
|
|
|
Platteville-Galena Chert |
|
|
Galena Chert |
|
|
Plattsmouth Fossiliferous Chert |
|
|
Rice Agate |
|
|
Plum Rum Chert |
|
|
|
|
|
Plummer Chert |
|
|
|
|
|
Point Aubin Chert |
|
|
|
|
|
Polk Creek Chert |
|
|
|
|
|
Porcellanite |
|
|
|
|
|
Port Ewen Chert |
|
|
|
|
|
Port Franks Chert |
|
|
|
|
|
Potato Hill Chert
(Novaculite) |
|
|
|
|
|
Powder River
Porcellanite |
|
|
|
|
|
Prairie du
Chein Chert |
|
|
|
|
Princeton
Chert
(New York) |
|
|
|
|
Princeton Chert
(North Pacific) |
|
|
Allenby Formation Chert |
|
|
Prout Chert |
|
|
|
|
|
Pryor Mountain
Chert |
|
|
|
|
|
Ptarmigan Chert |
|
|
|
|
|
Quartz |
|
|
|
|
|
Quartzite |
|
|
|
|
|
Quay County Chert |
|
|
|
|
|
Quitague Quartzite |
|
|
|
|
|
Racine Chert |
|
|
|
|
|
Rainy Butte Flint |
|
|
|
|
|
Rainy
Hills Silicified Wood |
|
|
|
|
|
Ramah Chert |
|
|
Mugsford Chert |
|
|
Ramah Chert (Maine?) |
|
|
|
|
|
Raytown Chert |
|
|
Fusulinid Chert |
|
|
Red River Chert |
|
|
|
|
|
Reed's Spring Chert |
|
|
|
|
|
Republic Chert |
|
|
|
|
|
Republican River Jasper |
|
|
|
|
|
Rex Chert |
|
|
|
|
|
Reynales
Silicified Sandstone |
|
|
|
|
|
Rhyolite |
|
|
|
|
|
Ribbon Chert |
|
|
|
|
|
Rickenbach Chert |
|
|
|
|
|
Ridgely Quartzite |
|
|
|
|
|
Road Creek Agate |
|
|
|
|
|
Roony Creek Chert |
|
|
|
|
Root River Chert /
Jasperoid
Cedar Valley Chert variation |
|
|
|
|
|
Roubidoux Chert |
|
|
|
|
|
Ryan's Quartz |
|
|
|
|
|
Saglek Chert |
|
|
|
|
|
Ste. Genevieve
Chert |
|
|
|
|
|
Salem Chert |
|
|
|
|
|
Salmon Creek Chert |
|
|
|
|
|
San Andres Chert |
|
|
|
|
|
Santa Cruz
Island Chert |
|
|
|
|
|
Saugus Jasper |
|
|
|
|
|
Saugus Rhyolite |
|
|
|
|
|
Schmitt Chert |
|
|
|
|
|
Scioto Chert |
|
|
|
|
|
Scotch Grove Chert |
|
|
|
|
|
Scotia Oolite Chert |
|
|
|
|
|
Selkirk Chert |
|
|
|
|
|
Sentinel
Butte Porcellanite |
|
|
|
|
|
Sepulvida Chert |
|
|
|
|
|
Shakopee Chert |
|
|
|
|
|
Sheep Creek
Quartzite |
|
|
|
|
|
Shell Rock Chert |
|
|
|
|
|
Shequindah Quartzite |
|
|
|
|
|
Shiver Chert |
|
|
|
|
|
Silicified Coral |
|
|
|
|
|
Silicified Peat |
|
|
|
|
|
Silurian Chert |
|
|
|
|
|
Silver Hill
Quartzite |
|
|
|
|
|
Silver Mound Silicified Quartzite |
|
|
|
|
|
Sioux Jasper |
|
|
|
|
|
Sioux Quartzite |
|
|
|
|
|
Sky Hill Chert |
|
|
Mahoning Chert |
|
|
Slaven Chert |
|
|
|
|
|
Smokey
Hill Silicified Chalk |
|
|
|
|
|
Smoky Hills Jasper |
|
|
Niobrara |
|
|
Snake Hill Chert |
|
|
|
|
|
Solidified
Volcanic Ash |
|
|
|
|
|
Somerville Chert |
|
|
|
|
|
Sonora Flint |
|
|
|
|
|
South Mountain
Chert |
|
|
|
|
|
Spanish Diggings
Agate |
|
|
|
|
|
Spanish Diggings
Chert |
|
|
|
|
|
Spanish Diggings Dendritic Jasper |
|
|
|
|
|
Spanish
Diggings Quartzite |
|
|
|
|
|
Spanish
Diggings Red Breccia |
|
|
|
|
|
Spanish
Point Dendritic Agate |
|
|
|
|
|
Spencer Opal |
|
|
|
|
|
Spergen Crystalline |
|
|
Saccaroidal Dolomite |
|
|
Spiculitic Chert |
|
|
|
|
|
Spring Branch Chert |
|
|
|
|
|
Spring Hill Chert |
|
|
|
|
|
Squaw Creek Opal |
|
|
|
|
|
St. Albans Chert |
|
|
|
|
|
St. Francois
Rhyolite |
|
|
|
|
|
St. Louis Green
Chert |
|
|
St. Louis Formation Chert |
|
|
Ste. Genevieve Chert |
|
|
|
|
|
Stanford Chert |
|
|
|
|
|
Stanley Chert |
|
|
|
|
|
Stanley Shale |
|
|
|
|
|
Starved Rock Chert |
|
|
|
|
|
Stirling Quartzite |
|
|
|
|
|
Stone Canyon Jasper |
|
|
|
|
Stoner Chert
Type A and B |
|
|
|
|
|
Stoney Creek Chert |
|
|
|
|
|
Summerville Chert |
|
|
|
|
|
Suwannee River
Chert |
|
|
|
|
|
Swan Creek
Quartzite |
|
|
|
|
|
Swan River Chert |
|
|
|
|
|
Tahkandi Chert |
|
|
|
|
|
Tallahatta Chert |
|
|
|
|
|
Tallahatta Quartz |
|
|
Tallahatta
Sandstone and Snowflake Quartzite |
|
|
Taylor Bed Chert |
|
|
|
|
|
Taylor Bed Quartzite |
|
|
|
|
|
Taylor Bed Silcrete |
|
|
|
|
|
Tecolate |
|
|
|
|
|
Tecovas Jasper |
|
|
|
|
|
Ten Mile Creek Chert |
|
|
Washington Chert |
|
|
Texas Oil Chert |
|
|
|
|
|
Texas Tortilla Chert |
|
|
|
|
|
Three Mile Chert |
|
|
|
|
|
Tiger Chert |
|
|
Bridger Basin Chert, Green
River Chert, Oil Chert, Zebra Chert |
|
|
Tongue River Silica |
|
|
|
|
|
Tonto Chert |
|
|
|
|
|
Top of the World Chert |
|
|
|
|
|
Toronto Chert |
|
|
|
|
|
Tosawihi Opalite |
|
|
|
|
|
Tosi Chert |
|
|
|
|
|
Trading Run Chert |
|
|
|
|
|
Troublesome Chert |
|
|
|
|
|
Trout Creek Jasper |
|
|
|
|
|
Troy Quartzite |
|
|
|
|
|
Tupelo Fort Payne Chert |
|
|
|
|
|
Turkey Creek Chert |
|
|
|
|
|
Turtle Valley Chert |
|
|
|
|
|
Tuscaloosa Chert |
|
|
Red Jasper and Yellow
Jasper |
|
|
Tyrone Chert |
|
|
|
|
|
Uniontown Chert |
|
|
Waynesburg Chert |
|
|
Upper Gull
River Formation Chert |
|
|
|
|
|
Upper Mercer Chert |
|
|
|
|
|
Upper St. Louis Chert |
|
|
|
|
|
Utica Jewelstone |
|
|
|
|
|
Utley Chert |
|
|
|
|
|
Uvalde Chert |
|
|
|
|
|
Vera Cruz Jasper |
|
|
|
|
|
Verdi Chert |
|
|
|
|
|
Vermont Jasper |
|
|
|
|
|
Wacissa Chert |
|
|
|
|
|
Wakefield Felsite |
|
|
|
|
|
Wapsipsicon Chert |
|
|
|
|
|
Warsaw Chalcedonic Chert |
|
|
Croton Chalcedonic Chert |
|
|
Wascoite Jasper |
|
|
|
|
|
Washademoak Lake Chert |
|
|
|
|
|
Wassonville Chert |
|
|
|
|
|
Watchung Carnelian |
|
|
|
|
|
Wausaw Chert |
|
|
|
|
|
Wayne County Chert |
|
|
|
|
|
West Franklin Chert |
|
|
|
|
|
West Patrica Chert |
|
|
|
|
|
Weverton Quartzite |
|
|
|
|
|
White and Clear Agate |
|
|
|
|
|
White River
Group Plate Chalcedony |
|
|
|
|
|
Wilcox Chert |
|
|
|
|
|
Williston Chert |
|
|
|
|
|
Wima Chert |
|
|
|
|
|
Winterset Chert |
|
|
Fusulinid Chert |
|
|
Wolf Den Mountain Rhyolite |
|
|
|
|
|
Woodbine Siltstone |
|
|
|
|
|
Woodford Chert |
|
|
|
|
|
Wyandotte Chert |
|
|
|
|
|
Yellow Banded Jasper |
|
|
|
|
|
Yeso Chert |
|
|
|
|
|
Youngsite Agate |
|
|
Hartsville Uplift Agate |
|
Zaleski Chert
Upper Mercer Chert variation |
|
|
Mahoning Black Flint |
|
|
Zebra Chert |
|
|
|
|
|
Zuni Spotted Chert |
|
|
|
|
