Utah Lithic Material
Name | Natural | Non-heat treated points | Heat treated points | Color details | Primary found in: | Associated Formation / Member |
Agate Jasper (Generic Type) |
Ranges from yellow to brown or green. Part if the material will be banded and be translucent while the remaining material will be mottled and opaque. | Western North America | ||||
Ajax Chert AKA: Emerald Chert |
Ranges from a light gray to a creamy white color | Central Utah | Emerald Dolomite Member of the Ajax Limestone Formation | |||
Andesite (Generic Type) |
North America | Varies | ||||
Argillite (Generic type) |
Light to dark green, but may range to various shades of gray | North America | ||||
Basalt (Generic Type) |
Ranges from black to gray | Western North America | ||||
Beaver Dam Agate / Petrified Wood | Primarily white with shades of orange, pink, and red. | Southwestern Utah | ||||
Beaver Dam Jasper | Shades of red | Southwestern Utah | ||||
Beaver Dam Wonderstone / Banded Rhyolite | Banded with colors of cream, brown, red, and yellow | Southwestern Utah | ||||
Bingham Quartzite | Most commonly white and banding may be present | North central Utah | Bingham Quartzite Formation | |||
Black Mountain Obsidian | Black | Southwestern Utah | ||||
Black Rock Obsidian | Ranges from a dark gray to black with phenocyst (snowflake) and reddish brown streaking (mohagany) commonly present. | Central Utah | ||||
Blue Valley Agate | Black with blue bands | Central Utah | ||||
Bluebell Chert | More banded than mottled and ranges from a buff to a dusty bluish gray | North central Utah | Bluebell Limestone Formation | |||
Boulder Jasper | Mottled with colors ranging from a yellowish brown to red. Intricate patterned swirls and speckles of translucent silica are present. | South central Utah | ||||
Brianhead Chert | Primarily white and gray and may have areas of red and yellow. | Southwestern Utah | Brianhead Formation | |||
Browns Bench
Obsidian AKA: Goose Creek, Hudson Ridge, Jackpot Obsidian |
Black | Northwestern Utah | Bruneau / Jarbidge Volcanic Field | |||
Browns Park Chert | Similar to chalcedony with a opaque base of white and translucent hues ranging from light yellow, light to dark gray or light brown. | Northeastern Utah | Browns Park Formation | |||
Brushy Basin Chert | Banded, white in color with pastel shades of tan, pink, green, and orange with banded or swirls of darker shades of brown, reddish brown, or gray. | Eastern Utah | Brushy Basin Member of the Morrison Formation | |||
Brushy Basin Quartzite | Eastern Utah | Brushy Basin Member of the Morrison Formation | ||||
Bryce Canyon Petrified Wood | Colors of red, brown, yellow, and white. Wood grain and rings are commonly present. | Southwestern Utah | ||||
Burro Canyon Chert | Variegated ranging from white to yellow, tan to medium brown, light to medium gray, light to medium green or shades of red | East central Utah | Upper Burro Canyon Formation | |||
Burro Canyon Quartzite | Ranges from off white to tan light gray or light green. May have mottling of darker gray. | East central Utah | Upper Burro Canyon Formation | |||
Butterfield Chert | Black with concentric bands of dark gray. | North central Utah | Butterfield Limestone Member of the Bingham Quartzite | |||
Caineville Agate / Jasper / Petrified Wood | Colors of white, gray, green, purple, orange, and red. The jasper is red and the petrified wood is shades of brown and tan with wood grain / rings | Southeastern Utah | ||||
Carnelian (Generic Type) |
Translucent and varies in shades from reddish brown to reddish orange. | North America | Varies | |||
Castro Canyon Agate | Red agate | Southwestern Utah | ||||
Cedar Breaks Moss Agate | Ranges from red to yellow with black dendritic inclusions. | Southwestern Utah | ||||
Cedar Canyon Agate | Colors of red, brown, black, and white. | Southwestern Utah | ||||
Cedar Mesa Chert | Red and white. | Southeastern Utah | Cedar Mesa Sandstone Member of the Cutler Formation | |||
Central Chalcedony | Gray color | Southwestern Utah | ||||
Chokecherry Chert | Primarily dark gray to black and mottling may be present. | Northwestern Utah | Chokecherry Dolomite Formation | |||
Circle Cliffs Petrified Wood | Colors of browns, grays and black with veins and patches of white. Wood grain and rings are present. | South central Utah | ||||
Cisco Agate AKA: Blood Spot Agate, Pigeons Blood Agate |
Ranges from bright red to pink, pinkish tan, and salmon color. | East central Utah | ||||
Cisco Jasper / Petrified Wood | Petrified Wood has colors of yellow, pink, red and bluish gray chalcedony. | East central Utah | ||||
Cisco Pink Chalcedony | Light pink color | East central Utah | ||||
Clay Point Agate / Moss Agate | Colors of red and purple ranging from homogenous to mottled. Moss agate has black or brown dendritic inclusions. | Southeastern Utah | ||||
Cottonwood Wash Chert | Banded | Southeastern Utah | ||||
Dacite (Generic Type) |
Most commonly a light to dark gray or black | Western North America | Varies | |||
Drum Mountain Plume Agate / Moss Agate / Jasper | Occurs in multiple colors including red, yellow, purple, white, and brown. | East central Utah | ||||
Duck Rock Jasper | Banded with colors of yellow, red, and brown cemented with silica. | Northeastern Utah | ||||
Dugway Geodes | Banded bluish gray to gray with a hollow interior | West central Utah | ||||
Elimia Agate AKA: Turritella Agate |
Black to brownish gray or brownish black matrix with light gray snail shells. | Northeastern Utah | Green River Formation | |||
Emmons Peak Quartzite AKA: Uinta Quartzite |
Ranges from an off white to a red or reddish purple. | Northeastern Utah | Emmons Formation | |||
Escalante Agate / Petrified Wood | Petrified wood has colors of yellow, brown, red, and white, wood grain and rings are commonly present. | South central Utah | ||||
Eureka Agate AKA: Eureka Jasper |
Colors of red and yellow. This material has been referred to as Eureka Jasper due to the color. | Central Utah | ||||
Eureka Quartzite AKA: Standbury Quartzite |
Ranges from dense white dark gray quartzite to a vitreous tan to brown, milky white, pink, purple, or red orthoquartzite. | Western Utah | Eureka Quartzite Formation | |||
Ferguson Wash
Obsidian AKA: Dead Cedar Wash, Ferguson Flat Obsidian |
Black | Northwestern Utah | ||||
Fiddlers Canyon Moss Agate | Ranges from a blue with black dendritic inclusions to a multi colored with colors of white, pink, and brownish orange with dendritic inclusions. | Southwestern Utah | ||||
Fish Haven Chert | Ranges from a grayish tan to black weathering shades of brown. | Northwestern Utah | Fish Haven Dolomite Formation | |||
Garden City Chert | Ranges from a light to dark grayish blue. Black layers of chert also occur. | Northern Utah | Garden City Limestone Formation | |||
Gardner Chert | Ranges from a gray to a dark grayish blue or black | Central Utah | Gardner Limestone Formation | |||
Gerster Chert | Ranges from a tan to a light gray or light bluish gray with a dark rusty brown cortex. Banding was reported in southern Pequop Mountains. | Northwestern Utah | Gerster Limestone Formation | |||
Grandeur Chert | Light gray | Northwestern Utah | Grandeur Limestone Formation | |||
Hermosa Chert | Has colors of red, gray and jet black. | Southeastern Utah | Hermosa Formation | |||
Henry Mountain Peach Agate / Petrified Wood | Petrified wood has colors of yellow, brown, red, white, and black with wood grain or rings commonly present. Agate is a peach color. | South central Utah | ||||
Hidden Canyon Jasper | Banded with colors of yellow, red, and green. Mossy dendritic inclusions may be present. | Utah | ||||
Indian Blanket Jasper | Soft subtle tones of red, purple, brown, black, yellow, and tan. | Southwestern Utah | ||||
Jordan Chert | Black | North central Utah | Jordan Limestone Member of the Bingham Quartzite Formation | |||
Kiabab Chert | Mottled with whites, light browns, tans, and light grays with a brown cortex | Southern Utah | Kiabab Limestone Formation | |||
Laketown Chert | Light gray | Northwestern Utah | Laketown Dolomite Member of the Guilmette Formation | |||
Lenox Chert | Ranges from dark bluish black to black. | North central Utah | ||||
Levan Agate | Blue | Central Utah | ||||
Levan Black Agate | Ranges from a dark gray to black | Central Utah | ||||
Little Egypt Agate | Shades of red | Southeastern Utah | ||||
Marysvale Obsidian | Black | South central Utah | Mount Belknap Volcanic Series | |||
Mineral Mountain
Obsidian AKA: Pumice Mine, Wild Horse Canyon Obsidian |
Black | Southwestern Utah | ||||
Moab Agate / Chalcedony | Includes white agate and red agate with red fortifications, Chalcedony is bluish white. | Southeastern Utah | ||||
Moab Jasper | Brownish yellow and red | Southeastern Utah | ||||
Moab Petrified Wood | Shades of brown and black with wood grain and rings present. | Southeastern Utah | Cutler Formation | |||
Modena Obsidian AKA: Dry Valley, Panaca Summit, Pinon Point Obsidian |
Opaque to slightly translucent black with faint translucent gray banding commonly present. | Southwestern Utah | ||||
Morgan Chert AKA: Morgan - Maddison Chert, Morgan Jasper |
Has colors of orange to a pumpkin orange, reds, yellowish "mustard" brown to a reddish brown. | East central Utah | Morgan Formation | |||
Morrison Chert AKA: Brushy Basin Chert / Burro Canyon Chert |
Commonly mottled and ranges in shaded of maroon, green, tan, and brown. | Eastern Utah | Burro Canyon Formation / Brushy Basin Member of the Morrison Formation | |||
Morrison - Cloverly Quartzite AKA: Morrison - Cloverly Orthoquartzite |
Ranges from a tan to brown or purple to maroon or gray. | Eastern Utah | Morrison and Cloverly Formation | |||
Morrison Mudstone | Commonly mottled and ranges in shaded of maroon, green, tan, and brown. | Eastern Utah | Burro Canyon Formation / Brushy Basin Member, Morrison Formation | |||
Morrison Petrified Wood | Colors of red, yellow, purple, black, gray, brown, and white. Wood grain and rings are commonly present. | Eastern Utah | ||||
Morrison Silicified Sandstone | Commonly mottled and ranges in shaded of maroon, green, tan, and brown. | Eastern Utah | Brushy Basin Member of the Morrison Formation | |||
Murdock Mountain Chert | Ranges from a light gray to a bluish gray or tannish gray. | Northwestern Utah | Murdock Mountain Limestone Formation | |||
Newcastle Chalcedony | Southwestern Utah | |||||
Notch Peak Chert | Dark colored gray | Eastern Utah | Notch Peak Formation | |||
Nugget Sandstone | Ranges from buff to pink. | Utah | Chug Water Formation of the Thrust Belt | |||
Obsidian AKA: Volcanic Glass |
Black to black with bands of dark reds (mahogany obsidian) or white flakes (snowflake obsidian) | Western North America | Volcanic | |||
Old Paria Petrified Wood AKA: Paria Petrified Wood |
Shades of gray, brown, black, white, and pink with wood grain and rings present. | South central Utah | ||||
Opal Hill Opal / Chalcedony | Primarily milky white with black, brown, and pea green occurring | East central Utah | ||||
Opal Hill Petrified Wood | Primarily milky white with black, brown, and pea green occurring | East central Utah | ||||
Opohonga Chert | White | Central Utah | Opohonga Limestone Formation | |||
Owl Rock Chert | Southern Utah | Owl Rock Member of the Chinle Formation | ||||
Paradise Chert | Translucent white matrix with mottling of opaque cream to yellow or brown opaque patches. | Southern Utah | ||||
Petrified Wood (Generic Type) |
Color based on the minerals present during the process. It can range from black green to blue yellow, red, and brown , pink and orange, yellow, white | Utah | Varies | |||
Phonolite Hill Obsidian | Primarily gray ranging to black. Flow banding may be present. | South central Utah | Marysvale Volcanic Field | |||
Phosphoria Chert AKA: Tosi Chert, Big Horn Chert |
Ranges from colors of red, maroon, purple, orangish red, green, black and white. | Northern Utah | Tosi Member of the Phosphoria Formation | |||
Pine Canyon Chert | Black | Central Utah | Pine Canyon Limestone Formation | |||
Plympton Chert | Ranges from a light milky gray to dark gray weathering brown. | Eastern Utah | Plympton Formation | |||
Prospect Mountain Quartzite | Brownish white, darker and more ferrous towards the base and lighter towards the top of the formation. | Eastern Utah | Prospect Mountain Formation | |||
Red Creek Quartzite Uinta Quartzite variant |
Very crystalline white quartzite. | Northeastern Utah | ||||
Reed Argillite / Chert AKA: Reed and Benson Argillite / Chert |
Light yellow cherty argillite | North central Utah | Reed Formation | |||
Rex Chert | Ranges from a brownish red to purple or an ashy gray to black | Northern Utah |
Rex Chert Member, Phosphoria Limestone Formation |
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Rhyolite (Generic Type) |
Gray to grayish black, flow banding may be present alternating from light to darker gray | North America | Volcanic Activity | |||
San Rafael Agate / Jasper | Ranges from white to red and yellow | East central Utah | Brushy Bush Member of the Morrison Formation. | |||
San Rafael Petrified Wood | Colors of brown, black, and white with wood grain and rings present. | East central Utah | Brushy Bush Member of the Morrison Formation. | |||
Septaria AKA: Oderville Agate |
Outer edge of a dark brownish gray with an interior of a lighter brown and white. | Southwestern Utah | ||||
Sheep Creek Quartzite | Most commonly tan to cream color with light gray occurring and less often dark gray, white or red. Banding is commonly present | Northeastern Utah | Uinta Quartzite Formation | |||
Shinrump Chert | Ranges from gray to white. | Southeastern Utah | Shinarump Conglomerate Member of the Chinle Formation | |||
Shinarump Quartzite | Black and red | Southeastern Utah | Shinarump Conglomerate Member of the Chinle Formation | |||
Silicified Dinosaur Bone | Utah | |||||
Spor Mountain Jasper | Colors of yellow, orange, and gray with dendritic inclusions. | West central Utah | ||||
St. John Jasper | Variegated jasper with colors of red, pink, white, and black. | Southwestern Utah | ||||
Summerville Chert | Two variations. One is black chert and the other is a white or red opalitic chert. | Southeastern Utah | Summerville Formation | |||
Swan Peak Quartzite | Ranges from white to gray | Northern Utah | Swan Peak Formation | |||
Thompson Agate / Jasper | East central Utah | |||||
Tiger Chert AKA: Bridger Basin, Green River, Oil Chert, Zebra Chert, Shavetail Chert |
Primarily dark brown with wide tan banding. If the material is smaller, the tan could be primary with the darker brown bands. | Northeastern Utah | Pine Springs Formation | |||
Tintic Quartzite | Primarily white weathering a brownish red | North central Utah | Tintic Formation | |||
Topache Chert | Light bluish color | Southwestern Utah | Topache Limestone Formation | |||
Topaz Mountain
Obsidian AKA: Thomas Range Obsidian |
Black | West central Utah | ||||
Torrey Agate / Jasper / Petrified Wood | Petrified wood has shades of tan and gray with wood grain and rings commonly present. | Southeastern Utah | ||||
Tuff AKA: Solidified Volcanic Ash (Generic Type) |
Contains greater than 75 volcanic ash and ranges from white to tan, gray or pink. | North America | Volcanic activity | |||
Utah Wonderstone | Banded rhyolite with banded colors of maroon, yellow, and white. | North central Utah | ||||
Watahomigi Chert AKA: Supai Chert, Watahomigi Jasper |
Shades of medium to dark red or purple with white quartzite veins commonly present. | Southwestern Utah | Watahomigi Formation of the Supai Group | |||
Wendover Moss Agate | White to bluish matrix with red or yellow dendritic inclusions. | Northwestern Utah | ||||
White Mountain Obsidian | Black | Central Utah | ||||
Wildcat Hills Obsidian | Black with phenocysts inclusions present. | North central Utah | ||||
Woodman Chert | Ranges from a dark gray to black | Northwestern Utah | Woodman Formation | |||
Yellow Cat Redwood | Red limb casts without any trace of wood structure. | East central Utah | ||||
Young Peak Chert | Dark gray | Northwestern Utah | Young Peak Dolomite Formation |