Name	Natural	Non-heat treated points	Heat treated points	Color details	Primary found in:	Associated Formation / Member
Argentine Chert				Ranges in color from a light tan to a pale to medium gray.  Light mottling or streaking may be present.	Northwestern Missouri	Argentine Member, Wyandotte Limestone Formation
Atoka Argillite				Ranges in color from a dark gray to black	Southwestern Missouri	Atoka formation
Atoka  Chert				Ranges from a medium to dark gray	Southwestern Missouri	Atoka formation
Atoka Siltstone				Ranges from a medium to dark gray	Southwestern Missouri	Atoka formation
Auburn Chert				White to bluish white	West central Missouri	Plattin Limestone Formation
Bailey Chert				Ranges from shades of light gray to tan or beige or caramels	Southeastern Missouri	Bailey Formation Limestone
Barren Fork Chert				Barren Fork Chert ranges from a light to medium gray or a tan.	Southwestern Missouri	Sallisaw Formation
Baylis Chert					Northeastern Missouri	Baylis Formation
Bayou Manard Chert				Black chert with white fossil specks	Northwestern Missouri	Moorefield formation, Bayou Menard member
Blair / St. David Chert				Moderately translucent chert that ranges in color from a medium gray to dark bluish gray with brownish mottling and grayish streaks.	Southeastern Missouri	Carbondale Group of the St. David Limestone
Boone Chert AKA: Sallisaw Chert, Grand Falls Chert, Ti Valley Chert				Ranges from a light gray to white	Southwestern Missouri	Boone Limestone Formation
Bowling Green Chert					Southeastern Missouri	Bowling Green Member of the Edgewood Limestone Formation
Burlington Chert				Varies from white to gray or tan.  Banding and mottling may be present	Eastern Missouri	Burlington Limestone Formation
Cedar Hill Chert					Missouri
Chouteau Chert				Ranges from a light to medium gray.  Oolites form whitish speckles throughout the material with vugs present.	East central Missouri	Chouteau Formation
Cobden- Dongola Chert AKA: Anna Chert, Hornstone, and St. Louis Ball Chert				Shades of dark gray to blue-gray which may be solid or have dark gray bands	Southeastern Missouri	St. Louis Limestone
Compton Chert				Bluish black chert	Southwestern Missouri	Compton Formation of the Chouteau Group
Cotter Chert AKA: Swan Creek Chert				Ranges in color from a light gray or blue with light tan to white banding.	Southwestern Missouri	Cotter Formation
Coyote Creek Chert (Burlington Chert variant)					Missouri
Crescent Chert (Burlington Chert variant)				Ranges from a brilliant white to a icy blue and commonly banding of darker colors.	East central Missouri	Burlington Limestone Formation
Crowley's Ridge Chert				Ranges from brown to tan, greyish tan, yellowish tan, or cream.	Southeastern Missouri	Glacial Till
Crushman Chert AKA for Boone Chert				Mottled dark gray	Southwestern Missouri	Boone Limestone formation
Dongola Chert				Dark tan to dark brown with banding of dark brown	Southeastern Missouri	St. Louis formation
Dupo Chert Burlington Chert variation					Illinois, Missouri
Elsey Chert				Ranges from a solid white to cream or a mottled white to cream with irregular blotches or spots of gray and brown.	Southwestern Missouri	Elsey Formation
Eminence Chert				Commonly gray, but may vary to a dark gray or reddish brown, vugs and fine banding of cloudy white and light gray may be present	East central Missouri	Eminence Formation
Ervine Creek Chert				Ranges from a light medium gray to a dark gray.  Larger white specks are formed by fossils	Northwestern Missouri	Ervine Creek Limestone Member, Deer Creek Limestone Formation
Everton Interclastic Chert AKA: Everton Chert				Primarily a white to light brown, brown or tan.  May vary from a pink-red, purple, and grey.  Commonly brecciated.	Southwestern Missouris	Everton Formation
Everton Quartzite				Ranges from a light to dark white to gray with weak banding of white and gray.	Southwestern Missouri	Everton Formation
Excello Chert				Ranges from a dark bluish black to black.  Chalcedony veins are commonly seen through the material	Northern Missouri	Excello Formation
Fayetteville Chert					Missouri
Fern Glenn Chert					East central Missouri	Fern Glenn formation
Fort Scott Chert AKA: Bixby Black Chert				Ranges from a dark bluish black to black.	Oklahoma, Arkansas, Kansas, Missouri	Fort Scott Formation of the Henrietta (Marmaton) Group
Fortune Chert				Ranging from a light cream to olive brown or tan color with mottling of a citrine drab to grayish olive gray and white speckles	Southwestern Missouri	Fortune Formation
Gasconade Chert				Banded ranging from a light gray to a dark gray	East central Missouri	Gasconade Formation
Girardeau Black Chert				Dark bluish black chert.	Southeastern Missouri	Girardeau Limestone Formation, Maquoketa Group
Grand Falls Chert AKA: Butcher Knife Chert				Light gray color and may vary to brown	Southwestern Missouri	Grand Falls Member of the Boone Formation
Grover Gravel Chert Lafayette Gravel variation				Ranges from brown to tan, greyish tan, yellowish tan, or cream. Mottling is commonly seen, and rarely banding may be present.	East central Missouri	Lafayette Gravel Formation
Harvester Creek Chert				Mottled light tannish brown to an orangish brown	East central Missouri	Salem Formation
Hertha Chert				White to a light gray color	Northwestern Missouri	Sniabar Member, Hertha Limestone Formation of the Kansas City Group
High View Chert Burlington Chert variant					Missouri
Hindsville Chert				Translucent gray with mottling of light blue to blue, gray, and light browns.	Southwestern Missouri	Hindsville Limestone Member of the Batesville Formation
Jefferson City Chert Type 1: Oolitic				Ranges from an off white to a pale blue with white oolitic speckles	Southern Missouri	Jefferson City Formation
Jefferson City Chert Type 2: Banded				Ranging from a off white to a pale purple with narrow banding alternating banding of  brown, blue, and purple	Southern Missouri	Jefferson City Formation
Jefferson City Chert Type 3: Mottled				Ranging from a off white to a pale purple with streaking, swirling, or disturbed banding of  brown, blue, and purple	Southern Missouri	Jefferson City Formation
Jefferson City Chert Type 4: Dense				White with a pearly luster	Southern Missouri	Jefferson City Formation
Jefferson City Quartzite				Light and dark colors of white, pink, red, brown, and gray, homogenous to weak banding or weak mottling, occasional vugs and voids are present.	Southern Missouri	Jefferson City Formation
Kaolin Chert				Ranges from hues of golden tans to gray and reds.  Light banding may be present.	Southeastern Missouri	Paleozoic Limestone formation
Keokuk Chert-Burlington Chert				Ranges from creamy white to grays with yellow and brown streaking	Northeastern Missouri	Keokuk Member, Burlington Limestone Formatione
Keokuk Chert				Ranges from a creamy white to a whitish pink with streaks or patches of whitish brown or whitish pink and reddish spots commonly present.	Southwestern Missouri	Keokuk Formation of the St. Joes Group
Kimmswick Chert				Opaque and gray in color.  Sparse black speckles are formed by pyritiferous particles.	Southern Missouri	Kimmswick Formation
Kincaid Fossiliferous Chert				Ranges from a light gray or bluish gray to brown in color with speckles formed by fossils.	Southeastern Missouri	Kincaid formation
Kornthal Chert Breccia AKA: McNairy Chert Breccia				Brecciated to conglomeritic ranging from a pinkish gray, to red most common, blue, yellow, brown, and inclusions of white chert or quartz	Southeastern Missouri	McNairy Formation
Laberdie Chert					West central Missouri	Laberdie Limestone member of the Vamoosa Formation
Lafayette Chert				Most commonly ranges from brown to tan, greyish tan, yellowish tan, or cream, less common white and black occur. Mottling or rarely banded	Eastern to southeastern Missouri	Lafayette Gravel Formation
Lafayette Quartzite					Eastern to southeastern Missouri	Lafayette Gravel Formation
Lindsey Bridge Chert				Ranges in color from white to tan or blue.	Southwestern Missouri	Lindsey Bridge  Limestone Member of the Moorefield Formation
Mansker Chert				Ranges in color from a tan to a dark brown or gray.  Speckles from fossil remains may be present.	Southeastern Missouri
McNairy Quartzite				Tightly packed pale yellowish quartzite with limited or no inclusions.  Red staining may be present.	West central Missouri	McNairy Formation
Mill Creek Chert				Vary from white to gray, grayish brown, orange white to orange gray, or pale blue to black.  Concentric banding may be present	Southeastern Missouri	Salem / Ullim Limestone formation
Montrose Chert				Light to medium bluish gray and often resembles a chert breccia.	Northeastern Missouri	Montrose Member of the Keokuku Limestone Formation
Mozarkite Chert				Ranges from hues and shades of gray, brown, pink, purple, and green.  Concentric banding or mottling is present.	Central Missouri	Cotter Formation
Osage Chert Osage Undifferentiated Chert				Ranges from a white to light gray or light brown.  Occasionally gray to dark gray mottling is present.	Missouri	Osage Series
Payson Chert AKA: Adams County Flint				Banded ranging in color from a tan to orange or red	Northeastern Missouri
Penters Chert AKA: Pinters Chert				Ranges from a highly variegated ranging from medium to dark gray, bluish gray, grayish brown, or mottled ranging white to pale gray or pale brown.	Southwestern Missouri	Penters Formation
Peoria Chert AKA: Tahlequah  Chert				Primarily white but ranges to a pale yellowish what to a yellowish brown or pink	Southwestern Missouri	Tahlequah Member of the Moorefield Formation
Pierson Chert				Ranges in color from a mottled gray, cream, and brown to light blue or brick red	Southwestern Missouri	Pierson Formation of the Osagean Series
Pitkin Chert				Ranges from a dark bluish gray to black.  Light blue may occur. Non-concentric banding and vugs may be present.  White speckles  commonly present	Southern Missouri	Pitkin Limestone Formation
Plattsburg Chert				Light brown color.	Northwestern Missouri	Plattsburg Limestone Formation
Potosi Chert					East central Missouri	Potosi Dolomite Formation
Reed's Spring Chert AKA: Carr Branch Chert				Opaque chert ranging in color from a bluish gray to a light gray or yellowish brown.	Southwestern Missouri	Reed's Springs formation
Republic Chert				Knotted chert with alternating bands of light and dark.	Southwestern Missouri	Republic Formation, Graydon Sandstone Formation
Roubidoux Chert				Ranges in color from white, gray, yellow or cream, and nearly black.	East central Missouri	Roubidoux Formation
Roubidoux Quartzite					East central Missouri	Roubidoux Formation
Sedalia Chert				Ranges from a white to light gray.	Central Missouri	Sedalia Formation of the Chouteau Group
Sexton's Creek Chert				Ranges from a light bluish gray to a caramel brown	Southeastern Missouri	Sexton's Creek Limestone Formation
Shakopee Chert				Ranges from white to gray with contrasting banding	Northeastern Missouri	Shakopee Dolomite formation
Spencer Chert AKA: Decaturville Chert					Central Missouri	Maquoketa Shale Formation
Spergen Chert AKA: Spergen Crystalline Saccaroidal Dolomite				Commonly banded or mottled and ranges in color from a very light gray to a gray or brownish gray, and a pale yellow to a tan	Northeastern Missouri	Spergen Formation
Spring Hill Chert				Strongly mottled and ranges from light to dark gray with dark speckles being present.	Northwestern Missouri	Spring Hill Member, Plattsburg Limestone Formation
St. David Chert Blair - St. David Chert				Moderately translucent chert that ranges in color from a medium gray to dark bluish gray with brownish mottling and grayish streaks.	Southeastern Missouri	Carbondale Formation of the St. David Limestone
St. Francois  Rhyolite				Reddish color	Southeastern Missouri
St. Louis Green Chert AKA: St. Louis Formation Chert				Varying shades from light gray green to yellow green	Southeastern Missouri	St. Louis Formation
Ste. Genevieve Chert AKA: Old Blue Chert				Ranges from light to medium blue, gray, and black, to olive gray and yellowish gray with gray concentric bands commonly present	Southeastern Missouri	Ste. Genevieve Limestone Formation
Strawberry Chert					Eastern Missouri
Stoner Chert Type A and B				Ranges from light to medium gray or a grayish tan with white veins.	Northwestern Missouri	Stoner Member of the Stanton Formation, Lansing Group
Toronto Chert				Homogenous ranging from a white to a pale brown or yellowish brown.	Northwestern Missouri	Toronto Limestone Member, Oread Formation of the Shawnee Group
Van Buren Chert				White	Central Missouri	Van Buren Limestone Formation
Westerville Chert				Ranges from homogeneous to mottled ranging from a pale brown to a light yellowish brown or brownish yellow and thin bands of white may be present.	Northwestern Missouri	Westerville Limestone Member of the Cherryvale Shale Formation
Winterset Chert AKA: Fusulinid Chert, Zebra Chert				Primarily homogenous, ranging to mottled or layered, ranging from a light to dark gray or brownish gray, opaque may have a "zebra" appearance	Northwestern Missouri	Winterset Limestone Member of the Dennis Limestone Formation, Kansas City Group
Wyandotte Chert AKA: Indiana Hornstone, Harrison County Chert				Ranges in color from a medium bluefish gray to a medium light gray.  Banding is common and is various shades of gray	Southeastern Missouri	Fredonia Member of the Ste. Genevieve Limestone formation
Yankee Town Chert				Ranges in color from a light gray to a pale yellow.  Banding may be present, has a "knotty" appearance.	Southeastern Missouri	Yankeetown Chert Member of the Cedar Bluff Group