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Name |
Also
Known As |
Variations |
Distribution Complete |
Description Complete |
Pictures Added |
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Gabbro |
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Gage Rhyolite |
Purple
Sunset Rhyolite |
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Gainesville Chert |
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Galena Chert |
Platteville-Galena Chert |
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Gallagher Flint |
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Gallatin Wood |
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Garber Chert |
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Garden City Chert |
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Gardner Canyon Argillite |
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Gardner Canyon Basalt |
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Gardner Canyon Quartzite |
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Gardner Canyon Rhyolite |
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Garland City Palmwood |
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Garnet Range Quartzite |
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Gary Green Jasper |
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Gasconade Chert |
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Gasconade Falls Chert |
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Gatesburg Chert / Dolomite |
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Geerster Canyon Quartzite |
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Gem Field Jasper |
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Gem Hill Jasper / Agate |
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Gem Hill Wood |
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Georgetown Brown Chert |
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Georgetown Gray Chert |
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Georgetown Tourmaline |
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Georgia Jasper |
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Georgiaites |
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Germantown Chert |
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Gerster Chert |
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Gettysburg Rhyolite |
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Gettysburg Siltstone |
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Gettysburg Siltstone (red) |
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Geysers - Clear Lake Chert |
Clear
Lake Chert, Geysers Chert |
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Gila Mudstone / Siltstone |
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Gilbert Turquoise |
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Gilmore City Chert |
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Gilsonite |
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Ginkgo Wood |
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Girard Chert |
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Girardeau Black Chert |
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Glass Butte Obsidian |
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Glass Mountain Obsidian |
Crater
Glass Flow Obsidian, Glass Mountain North / South Obsidian,
Grouse Hill Obsidian, Little Glass Mountain Obsidian |
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Glassy Mountain Rhyolite |
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Glen Rose Wood |
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Glenerie Chert |
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Glenn's Ferry Silicified Volcanic Ash |
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Gneiss |
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Goat Island Chert |
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Godber Turquoise |
Burnham Turquoise |
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Gold Hull Phyllite |
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Golde Acres Turquoise |
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Golden Moss Agate |
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Goldfield Jasper |
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Goldfield Jasper |
Bullseye Agate |
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Goodhue Quartzite |
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Goodwins Branch Chert |
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Goose Creek Chert |
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Goose Egg Chert |
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Goose Lake Obsidian |
Glass
Mountain Dacite, Stoney Dacite |
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Gordan Lake Chert |
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Government Mountain Obsidian |
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Gower Chert / Dolomite |
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Grand Falls Chert |
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Grand Gulf Sandstone |
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Grand Meadow Chert |
West
Patricia Chert |
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Grand Teton Soapstone |
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Grande Ronde Basalt |
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Granite |
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Granitic Gneiss |
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Graphite |
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Grasshopper Flat Obsidian |
Grasshopper Group Obsidian, Lost Iron Well Obsidian, Glittering
Mountain Obsidian, Red Switchback Obsidian |
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Grassy Knob Chert |
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Grassy Mountain Wood |
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Graystone Sandstone |
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Graywacke |
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Greasy Agate |
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Green Lake Rhyolite |
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Green Mountain Quartzite |
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Green Mountains Jasper |
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Green Pond Orthoquartzite |
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Green River Chert |
Cedar
Mountain Chert |
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Green River Jasper |
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Green River Sandstone |
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Green Squaw Jasper |
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Green Tree Turquoise |
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Greenalite |
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Greenbrier Chert |
Alderson Chert |
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Greene County Chalcedony (mylinite) |
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Greenfield Chert |
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Greenstone |
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Greenwater Chalcedony |
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Grime Hills Chert |
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Grimsby Sandstone |
Red
Medina Sandstone |
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Grindstone City Sandstone |
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Grinnell Argillite |
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Grinnell Quartzite |
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Grizzly Ridge (Opalized) Chert |
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Gronlid Siltstone |
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Grover Chert |
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Guadalupe Poppy Jasper |
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Guadalupe River Gravel Chert |
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Gull River Chert (Lower) |
Huronia Chert, Trent Valley Chert |
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Gull River Chert (Upper) |
Trent
(Valley) Chert |
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Gun Flint Silica |
Brandon Flint |
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Gwynns Falls Gneiss |
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