Wisconsin Lithic Material
Name | Natural | Non-heat treated points | Heat treated points | Color details | Primary found in: | Associated Formation / Member |
Ajibik Quartzite AKA: Kakabeka Quartzite |
Ranges from a light gray to a flesh or tan color. Commonly stained spots that range from tan to yellow, or a reddish brown | Northern Wisconsin | Lower Marquette series | |||
Alma Quartzite Variations: Buffalo County Quartzite and Lacross County Quartzite |
Range from white to purple (Alma Quartzite), to an off white to a tan (Lacross variation), or tan to brown (Buffalo variation). | West central Wisconsin | ||||
Arcadia Ridge Orthquartzite | Ranges in color from a tannish white to a light tan | West central Wisconsin | ||||
Banded Jasper | Multi colored with red banding | Northwestern Wisconsin | ||||
Baraboo Quartzite | Varying shades of pink to red or maroon banded with lighter pinks and whites | Southwestern Wisconsin | ||||
Barron County Pipestone | Ranges in color from a homogenous pink to red. | Central to northwestern Wisconsin | ||||
Barron County Quartzite | Ranges in color from a light yellow to a pale purplish pink. Striping, banding, or staining may be present | Northwestern Wisconsin | ||||
Bayport Chert | Varies from light brown to a medium gray. White quartz inclusions can form white clouds or bulls eye forms in the material, Banding may be present. | East central Wisconsin | Bayport Limestone formation | |||
Bessemer Quartzite | Northern Wisconsin | "Nopeming formation", Puckwunge formation, Osier Group | ||||
Blair Creek Basalt | Dark gray in color | Northern Wisconsin | Blair Creek formation, Menominee Group | |||
Blanding Chert Silurian Chert variant |
Ranges from white to gray with faint bands of pale yellow, brown, and orange | Southwestern Wisconsin | Blanding formation | |||
Bois Blanc
Formation Chert |
Color ranging from almost white to grays, browns, and blues | Northeastern Wisconsin | Bois Blanc Formation Limestone | |||
Buffalo County Quartzite Alma Quartzite variant |
Range from a tan to brown | West central Wisconsin | ||||
Cedar Valley Chert Rapid Chert |
Translucent ranging from a light to medium brown | Southwestern Wisconsin | Cedar Valley Formation, Rapid Member | |||
Cedar Valley Jasper | Southwestern Wisconsin | |||||
Cochrane Chert | Ranges in color from a medium tan to a dark brown. It is often banded or mottled. Quartz inclusion may be present. | West central Wisconsin | Reedstown Member | |||
Elwood Chert Elwood- Joliet Chert |
Ranges from white to gray | Southern Wisconsin | Elwood formation | |||
Flambeau Quartzite | Ranges from a reddish brown to a yellowish gray | Northern Wisconsin | Flambeau Quartzite Formation | |||
Flow Banded Rhyolite | Wisconsin | |||||
Galena Chert Platteville-Galena Chert |
Ranges from gray to light tones of brown ,mottles and swirls White specks of fossil fragments. Small flat vugs may be present. | Southern Wisconsin | Platteville Dolomite formation | |||
Grand Meadow Chert |
Range from a light to medium gray and may be a solid color or mottled, may have a golden hue | West central Wisconsin | ||||
Harmilda Chert AKA: Bolingbrook Chert, Sugar Chert, Crystal Chert |
Semi-transparent and region. The Semi-translucent portion ranges from tan to gray and the opaque regions range from white to gray. | Southeastern Wisconsin | Silurian System | |||
Hixton Silicified Sandstone / Quartzite AKA: Sugar Quartz |
Range in color from white to tan (most common), but may vary from red to orange, lavender to brown, or yellows | Southwestern to central Wisconsin | ||||
Hopkinton Chert | Translucent light gray with white opaque mottling | Southwestern Wisconsin | Hopkinton Formation | |||
Jasper Taconite Taconite Jasper AKA: Gun Flint |
Deep red color to black or blue with darker small round inclusions. The inclusion can vary in color from dark green, dark blue, or black | Northwestern Wisconsin | Gunflint Formation, Animikian Group | |||
Joliet Chert Elwood- Joliet Chert |
Ranges from white to gray | Southern Wisconsin | Joliet formation | |||
Kankakee Chert AKA for Blanding Chert Silurian Chert variant |
Ranges from white to gray with faint bands of pale yellow, brown, and orange | Southwestern Wisconsin | Blanding formation | |||
Lacross County Quartzite Alma Quartzite variant |
Range from an off white to a tan | West central Wisconsin | ||||
Lake Superior Agate | Range in color from a light to dark salmon or coral color with alternating bands of white or light yellow. Colorless inclusions of quartz are often present. | Northern Wisconsin | Nebraska - Archean System | |||
Lake Vermillion Chert | Northwestern Wisconsin | Lake Vermillion Formation | ||||
Maquoketa Chert AKA: Silurian 2 Chert |
Ranges in color from a pale olive gray to a pale gray. Banding or
streaking may be present. |
Southwestern Wisconsin | Maquoketa Formation | |||
Marquette Rhyolite | Ranges in color from a medium to dark gray to a greenish gray color. | Central to east central Wisconsin | ||||
Oneota Chert AKA: Oneota Prairie de Chein Chert (lower) |
Ranges from white to gray or yellowish or orange |
Wisconsin | Lower Prairie de Chien Group, Oneota formation | |||
Platteville - Galena Chert Galena Chert |
Ranges from gray to light tones of brown ,mottles and swirls White specks of fossil fragments. Small flat vugs may be present. | Southern Wisconsin | Platteville Dolomite formation | |||
Powers Bluff Quartzite | Pink in color | Central Wisconsin | Aprin Conglomerate formation of the Animikie Group | |||
Prairie du Chein Chert | Mottled and ranges in color from an off white to a light cream | Southwestern Wisconsin | Prairie du Chein group | |||
Racine Chert AKA: Engadine Chert |
Ranges from a grayish white to a medium gray or bluish gray. Mottling or streaks of bluish tints may be present | Wisconsin, Illinois | Racine Limestone Formation | |||
Rib Mountain Quartzite AKA: Rib Hill Quartzite |
Ranges from a white to a pale pinkish
color |
North central Wisconsin | ||||
Root River Chert /
Jasperoid Cedar Valley Chert variation |
Opaque and ranges in color from yellowish brown to dark brown or an ocher color with mottling | Southwestern Wisconsin | Cedar Valley Formation, Rapid Member. | |||
Saugeen Chert Bois Blanc variation |
Color ranging from very light almost white | Ontario, Michigan, and Wisconsin | Bois Blanc Formation | |||
Selkirk Chert AKA: Dundee Chert |
Range in color from light gray to yellowish gray, dark gray, , black or brown. White to light gray bands or clouds are present | Northern Wisconsin | Dundee Limestone Formation | |||
Shakopee Chert | Ranges from white to gray with contrasting banding | Central to southern Wisconsin | Shakopee Dolomite formation | |||
Silurian Chert | Mottled or streaked chert ranging in color from white to a light cream or light gray | Northern Wisconsin | Mayville Limestone / Dolomite Formation | |||
Silver Mound Silicified Quartzite Hixton Quartzite variant |
Southwestern to south central Wisconsin | Wonewoc Formation | ||||
Starved Rock Chert AKA: LaSalle Chert Oneota Chert variation |
Ranges from white to a light olive gray or gray and from a light brown to a light yellow with darker colored banding. | South central Wisconsin | Lower Prairie de Chien Group, Oneota Formation | |||
Thunder Mountain Quartzite AKA: McCaslin QUartzite |
Grayish color. It is considered a quartz rich graywacke. | East central Wisconsin | McCaslin syncline | |||
Tyler Argillite |
Ranges from gray to dark gray in color. |
Northern Wisconsin | Tyler formation, Baraga Group | |||
Utley Rhyolite | Grayish black with white intrusions of quartz. Light pink tints may be present caused by feldspars | Southwestern Wisconsin | ||||
Waterloo Quartzite | Ranges from a light buff to a red. | South central Wisconsin | ||||
Waukesha Chert | Ranges from white to a bluish white or gray. | Southeastern Wisconsin | Wankesha Limestone Formation | |||
Wewe Slate | Banded ranging from a gray to grayish green. | Northern Wisconsin | Chocolay Group |