East Central Region Licthic Materials

Materials Identification Guide

East Central Region Lithic Material

Name	Natural	Non-heat treated points	Heat treated points	Color details	Primary found in:	Associated Formation / Member
Allens Creek Chert Muldraugh variation AKA: Floyds Knob Chert				Mottled and ranges in color from gray, tan, brown, and blue. May be translucent.	Kentucky, Indiana, Ohio	Muldraugh Formation of the Sanders Group
Amabel Formation Chert				White lacking luster	Ontario, Michigan	Middle Silurian Amabel Formation
Ancaster Chert AKA: Lockport Chert and Goat Island Chert				Mottle light to medium gray with inclusions of lighter quartz. Commonly rusty stains.	Ontario, Michigan, New York	Lockport Formation
Argillite				Light to dark green, but may range to various shades of gray.	North America
Armuchee Chert AKA: Horse Leg Chert, Frog Mountain Chert				Black to dark or medium gray	Georgia, Tennessee, Alabama	Frog Mountain formation
Attalla Chert				Occurs as a conglomerate or breccia and is light to medium gray. Primarily has small angular chert fragments in a siliceous matrix.	Alabama	Attalla Chert Conglomerate, Chickamauga Limestone Formation
Attica Chert AKA: Indiana Greenstone and Independence Chert				Ranges from a greenish gray to gray or blue-gray with occasional mottled or streaked with swirls of light to medium green	Indiana, Illinois	Muldraugh Formation of the Borden Group
Bailey Chert				Ranges from shades of light gray to tan or beige or caramels	Missouri, Illinois, Kentucky	Bailey Formation Limestone
Balsam Lake Speckled Chert AKA: Upper Bobcaygeon Chert				Bluish gray with white speckles	Ontario	Bobcaygeon formation
Banded Slate					Tennessee, Kentucky, Ohio, Indiana
Bangor Chert				Translucent and banded, ranging in color from black to a dark bluish gray or greenish	Tennessee, Georgia, Alabama, Mississippi, North Carolina	Bangor Limestone formation
Bangor Limestone AKA: Colbert County Limestone				Medium gray	Alabama, Tennessee, Georgia, Mississippi	Bangor Limestone formation
Bar River Quartzite				Ranges from a smoky white to a pale yellow with pinkish hues	Ontario	Bar River Formation
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.	Michigan, Ontario, Wisconsin, Ohio, Indiana	Bayport Limestone formation
Berea Sandstone				Light gray to a buff	Ohio, Michigan, Pennsylvania, West Virginia, and Kentucky	Waverly Group
Beech Creek Chert					Indiana	Beech Creek Limestone formation
Bibb Chert				Dark gray with chert nodules characterized by irregular cavities	Alabama	Bibb Dolomite Member of the Knox Formation
Bigby-Cannon Chert AKA: Gray Banded Chert				Banded gray and white. It has broad alternating bands of light to dark whites and grays followed by darker grays to almost black	Tennessee	Bigby and Cannon Limestone formations
Bisher Chert AKA: Highland Chert, Lilley Chert				Ranges in color from a white to yellow including mottled tan and creams.	Ohio, Kentucky, and Indiana	Bisher Dolomite formation
Bloomville Chert				Ranges from a mottled or banded light gray to a dark gray.	Ohio
Blue Gray Fort Payne Chert				Opaque gray to bluish gray, or black with tan patches. White fossil specks are usually present	Tennessee, Alabama, and Mississippi	Fort Payne Formation
Bobcaygeon Chert AKA: Marmora Chert				Ranges in color from gray to gray brown and dark brown to black	Ontario	Middle Ordovician formation
Boggs Chert AKA: Blunt Run Chert				Ranges in color from a dark gray to black with numerous white or light colored speckles from fossils	Ohio, Pennsylvania, West Virginia	Boggs member, Pottsville Group
Bois Blanc Formation Chert				Color ranging from almost white to grays, browns, and blues	Ontario, Michigan, Wisconsin, New York	Bois Blanc Formation Limestone
Bonnecherre Chert				Ranges from black to light grey with darker fine banding and quartz vug	Ontario and Quebec	Hull formation of the Ottawa group
Bowling Green Chert					Kentucky, Indiana, Illinois, Missouri	Bowling Green Member of the Edgewood Limestone Formation
Brassfield Chert AKA: Clifton Chert / Agate, Belfast Chert				Artifacts tend to range in color from light greenish to blue or light tans mottled with yellowish red to milky white	Kentucky, Tennessee and into Ohio, Indiana, Alabama, and Mississippi	Brassfield Formation
Breathitt Chert				Range from a dark chocolate brown to a black or from shades of brownish green to tan with tan or yellow inclusions are often present.	Kentucky West Virginia	Breathitt Formation
Briar Hill Sandstone				Golden tan	Ohio
Brierfield Chert				Ranges from a medium to dark blue gray in color characterized by chert with irregular cavities.	Alabama	Brierfield Dolomite Formation
Broyle Chert				Vary in color from yellows to tan or blues. The cortex is white and chalky. Rarely may be translucent	Kentucky, Ohio, Indiana	Middle Devonian chert
Brush Creek Chert AKA: Crooksville Chert, Hughes River Chert				Varies in color from a tan to a brown olive or light green	Ohio, Pennsylvania, West Virginia, and Kentucky	Conemaugh Group
Bryantsville Chert AKA: Burton Chert				Ranges in color from a light gray to a grayish brown color	Indiana	Levias Member of the Ste. Genevieve Limestone formation
Bucksnort Chert					Tennessee
Buffalo River Chert				Ranges in color from light to dark tans with orangish, reddish and bluish hues. May have gray or brownish swirls	Tennessee, Alabama, Mississippi	Fort Payne Formation
Burlington Chert				Varies from white to gray or tan. Banding and mottling may be present.	Illinois, Indiana, Iowa, Missouri, Arkansas, Kentucky, and Tennessee	Burlington Formation
Cabot Head Chert AKA: Bruce Chert				Ranges in color from shades of white to a light gray.	Ontario, Michigan, Indiana, New York	Cabot Head Member of the Cataract Formation
Cain Springs Chert					Kentucky
Calfkiller Agate AKA: Calf Killer Agate				Mottled with colors of red, yellow, and white	Tennessee
Cambridge Chert				Gray colored chert	Ohio, West Virginia, Kentucky	Cambridge Member of the Conemaugh Formation
Camden Chert				Mottled white to gray, gray to gray blue, pale yellow to olive-yellow or tan. Vugs, quarts inclusions, streaking generally present	Alabama, Mississippi, Tennessee, and Kentucky	Tuscaloosa Formation
Cannel Coal				Ranges from dark gray to black	Kentucky, Pennsylvania, West Virginia, Texas, and Nova Scotia.
Carter Cave Chert AKA for Paoli Chert				Translucent and ranges in color from yellow to tan, red, and orange. Rarely green and blue are present	Kentucky, Indiana, Illinois	Paoli Limestone formation
Carter's Chert				Ranges in color from a white to gray with a gray brown mottling or darker gray banding and white speckles.	Tennessee
Cave in Rock Chert					Illinois, Kentucky	Ste. Genevieve Limestone formation
Cedarville - Guelph Chert AKA: Shawnee Chert				Primarily a mottled white to light gray or light blue numerous fossils giving a speckled appearance with vugs or quartz present	Ohio, Michigan , Indiana	Cedarville-Guelph formation
Cheaha Quartzite				Ranges in color from a white to light gray	Alabama	Cheaha Quartzite Member of the Talladega Formation
Chepultepec Chert Knox Chert Variant (Ridge and Valley Chert)				Ranges from yellow to white and oolitic	Georgia, North Carolina, South Carolina, Alabama, and Tennessee	Chapultepec Member of the Knox Formation
Chickamauga Chert (Ridge and Valley Chert)				Ranges from a brownish black to a black in bedded limestone, but ranges to a drab olive green in limestone boulders.	Alabama, Georgia, Tennessee	Chickamauga Limestone Formation
Chilhowee Mudstone				greenish-gray in color	Alabama, Tennessee, North Carolina, Virginia, and West Virginia.
Clear Branch Chert				Black	Alabama	Clear Branch Sandstone Formation
Clear Creek Chert				Ranges from a slight yellowing gray to white	Illinois, Indiana, Kentucky, Tennessee	Overlies the Backbone Limestone 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	Illinois, Indiana, Missouri, Kentucky	St. Louis Limestone
Coffee Creek Chert Jeffersonville Chert variation				Semi-translucent and variegated ranging from a bright white to a light gray, very pale brown, slightly pinkish white in color with a milky or creamy appearance	Kentucky, Ohio, Indiana	Jeffersonville Limestone formation
Colborne Chert Bois Blanc Variant				Light bluish grey color	Ontario, Michigan, Wisconsin	Bois Blanc Formation
Collingwood Chert Fossil Hill variation				Ranges from white to an off white or cream color	Michigan and Ontario	Fossil Hill Formation
Columbus Chert				Ranges in color from a white to a light gray	Ohio, Indiana, Michigan	Columbus Limestone Formation
Conasauga Chert (Ridge and Valley Chert)				Most commonly a light bluish gray to tan or silver, rarely reds do occur. Commonly mottled and is oolitic. May be very chalcedonic	Georgia, Alabama	Conasauga Formation
Conococheague Chert				Ranges from a gray to a bluish gray, brownish gray, or black. Small blue to white inclusions may be present.	Virginia, Tennessee, West Virginia, North Carolina	Conococheague Limestone Formation
Copper Ridge Chert Knox Chert variant (Ridge and Valley Chert)				Ranges in color from medium to dark gray to black	Georgia, North Carolina, Tennessee, South Carolina, Alabama	Copper Ridge Member of the Knox formation
Corning Creek Chert				Ranges from gray to pink	Michigan	Corning Creek Zone of the Negaunee Formation
Coshocton Chert Upper Mercer Chert variation				Ranges from a medium gray to a dark bluish gray with bands of various shades of blue, commonly has bands of white quartz	Ohio, Michigan, Ontario, Pennsylvania, and New York	Pottsville formation
Crab Orchard Banded Chert AKA: Gray Banded, Jelly Roll, Kentucky Stromatoporoid chert				Banded gray and white. It has broad alternating bands of light to dark whites and grays followed by darker grays to almost black	Kentucky, Tennessee, Indiana, Illinois	Crab Orchard member
Crystal Quartz				clear colorless stone similar to clear glass	Eastern North America
Decaturville Chert				Porous gray	Tennessee	Top formation of the Helderbergian Group
Deerlick Creek Chert				Ranges from a mottled light gray to a very dark gray, light bluish gray to a darker blue may occur, quartz or chalcedony inclusions may be present.	Michigan
Degonia Chert				Ranges from white to gray and blue	Kentucky, Illinois, Indiana	Degonia formation
Del Rio Chert AKA: Bayless Chert				Mottled ranging in colors from yellow to reds, dark blues to black, browns and whites	Tennessee
Delaware Chert AKA" Marble Cliff Chert, Scioto Chert				Range from a dull tan to almost a black chocolate brown	Ohio	Delaware Formation
Derby Chert				Vary in color from a light medium gray to a medium dark gray. White or dark gray banding may be present	Indiana, Kentucky
Detour Chert Fossil Hill variation				Ranges in color from a bluish gray to a dark brown. White circular inclusions are present in this chert	Ontario, Michigan	Fossil Hill Formation
Ditney Chert					Indiana, Kentucky	Shelburn formation topping the West Limestone member
Dongola Chert				Dark tan to dark brown with banding of dark brown	Illinois, Missouri, Kentucky, Tennessee	St. Louis formation
Dover Chert Fort Payne variant AKA: Elco Chert				Range from a light tan to almost a black chocolate brown with swirls, bands, or streaks of light to dark	Illinois, Indiana, Ohio, Kentucky, Tennessee	Fort Payne Formation
Eramosa Chert				Ranges from light to medium gray or brown gray	Ontario, New York	Goat Island Member
Erwin Quartzite AKA: Erwin - Antietam Quartzite				Ranges from bright white to light gray, tan, brown, pink, or red. A green brown variation is reported in Amherst County, Virginia	Tennessee, North Carolina, Virginia, South Carolina	Erwin Formation
Eversole Chert Columbus Chert variant				light colored chert, impure in nature	Ohio	Columbus formation
Fairfield County Chert				Light grayish blue color	Ohio	River cobble
Fall Creek Chert Jeffersonville Chert variant				Ranges in color from shades of whites to grays varying from light to dark gray.	Indiana	Jeffersonville Limestone formation
Ferdinand Chert				Dark bluish gray fossiliferous chert	Indiana, Kentucky	Mansdfield formation, Lead Creek member
Fishpot Chert				Primarily light to dark brown and gray in color. High quality similar to chalcedony. Light banding with small bluish gray chalcedony inclusions.	Ohio and West Virginia	Monongahela group, Fishpot limestone member
Flanagan Chert				Gray color	Kentucky	Flanagan Limestone Formation
Flemming Chert				Ranges in color from white to shades of tan or gray to black. It is mottled and commonly banded.	Labrador, New Brunswick, Quebec, Ontario	Fleming formation limestone
Flint Ridge Chert /Chalcedony AKA: Van Port Chert, Raccoon Creek Chert				White to bluish hues with bands of light gray, reds, and yellows	Ohio, Michigan, Ontario, Indiana, Kentucky, West Virginia	Van Port Member of the Allegheny Formation
Florence County Fort Payne Chert				Ranges in color from dark gray to black and is mottled with lighter translucent light blue	Tennessee, Alabama, Mississippi	Fort Payne Formation
Fort Payne Chert AKA: Iuka Chert, Lauderdale Chert				Ranges in color from black to a grayish blue, or white to a bluish white. Bluish gray is the predominate color with bluish hues	Kentucky, Tennessee, Alabama, Mississippi, Georgia, South Carolina, North Carolina, Virginia, West Virginia	Fort Payne Formation
Fossil Hill Chert AKA: White Chert				Ranges in color from off white to bluish white. Hues include red, pink, yellow and green. Speckled with oxides and quartz	Ontario, New York, Michigan	Fossil Hill Formation Limestone
Four Mile Creek Chert AKA: Salamonie Chert				Ranges from a pink to an off white, light gray, light blue, or light bluish gray color. Chalcedony inclusion may be present.	Ohio and Indiana	Salamonie formation, Laurel member
Georgiates				Translucent olive green.	Georgia, South Carolina	Chesapeake Bay Impact
Gordon Lake Chert / Quartzite				Green chert or quartzite. Can range from opaque to translucent	Ontario	Glacial pebbles and cobble
Grassy Knob Chert				Ranges in color from a pale yellowish gray to a light olive brown	Illinois, Indiana, Kentucky	Bailey Limestone formation
Greenfield Chert				Ranges from a light to dark gray with white chalcedony / quartz inclusions..	Ohio, West Virginia, Kentucky	Greenfield formation, Saline Group
Graywacke				Color is greenish gray with dark specks of felsite and quartz	Ontario	Lower member of the Georgian Bay Formation
Gull River Chert (Upper) AKA: Trent Valley Chert				Ranges from black or blackish blue with lenticular cream or light tan mottling	Ontario	Gull River Limestone
Haldimand Chert Bois Blanc Variant				Ranges from a light gray to a light tan cream color	Ontario, Michigan, and Wisconsin	Bois Blanc Formation
Hamden Chert				Ranges from a light gray to a gray, yellow to brown, or reddish brown. Black and white specks of chalcedony filled vugs are present.	Ohio	Allegheny formation, Hamden member
Haney Chert				Color is white or light gray with specks of brown	Kentucky, Indiana	Haney Limestone formation
Harbert Hills Chert					Tennessee
Hardy Creek Chert				Ranges from a brown to a gray or an olive black	Virginia, West Virginia, Kentucky, Tennessee	Hardy Creek Limestone Formation
Harriman Chert / Novaculite AKA: Cypress Creek Chert				Shades of white	Tennessee	Harriman formation
Harrison Chert AKA: Maxville Chert				Ranges in color from a white to an off white or light gray with dursy inclusions	Ohio	Harrison and Maxville member, Pottsville group
Harrodsburg Chert				Ranges from commonly dark olive-brown to tan, although various shades of browns, tans, blues, and off-white, oolites form white speckles	Indiana and Kentucky	Harrodsburg Limestone formation
Hillsdale Chert				Black weathering gray.	West Virginia, Virginia, Kentucky	Hillsdale Limestone Formation
Holland Chert AKA: Upper Huntingburg Chert				High quality light gay to dark bluish gray chert	Indiana, Kentucky	Holland Limestone formation
Honaker Chert / Dolomite AKA: Nolichucky Chert				Dolomite is a light to medium gray with banding present, minor chert nodules of dark gray to black with algal banding	Virginia, Tennessee, North Carolina	Honaker Formation / Nolichucky Formation
Hopkinsville Chert Ste. Genevieve Variation				Ranges in color from a light to dark gray color.	Kentucky	Ste. Genevieve formation
Horse Creek Chert Tuscaloosa variation AKA: Pickwick Chert and Lost Quarry Chert				Banded with the band colors ranging from black to medium gray (outer band), yellow tan to pale yellow (next band), pink to reddish or brick red (center).	Tennessee, Alabama, Mississippi	Tuscaloosa Formation
Horse Mountain Agate				Variegated chalcedony with colors of white, amber, red, and black.	Tennessee	Hermitage Formation
Hudson Bay Lowland Chert				Bluish gray to a light tan or pale yellow	Ontario, Saskatchewan, and into Minnesota	Severen, Ekwan, and Stooping river formations
Huronia Chert AKA: Lower Gull River Chert				Bluish gray mottled or banded chert with brownish-grey or greyish-beige colors. Chert is commonly speckled with light/dark grey, or grey-black	Ontario, Michigan, Ohio, Pennsylvania, New York	Fontenac Axis member of the Gull River formation
Indian Creek Chert AKA: Richland Chert				Beige to buff or tan with browns occasionally being present. Variegated shades of dark grays or purplish grays may be present	Indiana	Ste. Genevieve Limestone formations
Jasper Knob Chert				Ranges from white to gray	Michigan	Jasper Knob Member of the Negaunee Formation
Jefferson County Fort Payne Chert				Mottled light tan to white, beige is the most common color	Alabama	Fort Payne formation
Jeffersonville Chert				Ranges from white to cream or light yellow to tan and medium brown darker brown bands appearing jagged and interspersed	Ohio, Indiana	Jeffersonville Limestone formation
Jemison Chert				Commonly a light gray with iron staining.	Alabama	Jemison Chert Formation, Talladega Group
Kanawha Black Chert				Vary from a black to a bluish black /gray to a dark gray	West Virginia and into Pennsylvania, Virginia, Ohio, and Kentucky	Kanawha formation
Kaolin Chert				Ranges from hues of golden tans to gray and reds. Light banding may be present.	Illinois, Indiana, Kentucky, Missouri	Paleozoic Limestone formation
Kenneth Chert				Varying shades of creamy white to light gray with mottle or speckled darker grays to almost black	Indiana	Kenneth Limestone Member
Kettle Point Chert AKA: Ausabel Chert, Port Franks Chert / Chalcedony				Ranges from a mottled blue gray to a medium gray with darker grayish banding, lighter clouds or streaks are present	Ontario and into Pennsylvania	Ipperwash Formation Limestone
Ketona Chert Knox Chert variation				Light gray	Alabama, Georgia	Ketona Dolomite Member of the Knox Formation
Kichispi Chert Upper Gull River variant				Continuously banded chert ranging in color from a brownish grey or greyish beige.	Ontario	Upper Gull River formation
Kingsport Chert				Ranges from a medium to dark gray	Tennessee, North Carolina, Virginia	Kingsport Formation of the Beekmantown Group
Knox Chert				Dark blue to bluish gray with translucent mottling. Red Knox Chert has a reddish color with slight mottling.	Alabama, Georgia, Tennessee, South Carolina, North Carolina	Knox Formation
Kornthal Chert Kornthal Chert Breccia				Brecciated to conglomeritic ranging from a pinkish gray, to red most common, blue, yellow, brown, and inclusions of white chert or quartz	Missouri, Illinois, Kentucky	McNairy Formation
Kosciusko Quartzite				Ranges from gray to a whitish gray or whitish brown. Mottling or light reddish iron staining may be present.	Mississippi	Kosciusko Formation
Lafayette Gravel Chert				Most commonly ranges from brown to tan, greyish tan, yellowish tan, or cream, less common white and black occur.	Missouri, Illinois, Arkansas, Louisiana, Mississippi	Lafayette Gravel Formation
Lafayette Quartzite					Missouri, Illinois, Arkansas, Louisiana, Mississippi, Tennessee	Lafayette Gravel Formation
Lambrix Chert				Ranges in color from a sandy brown, pale brawn, or dark brown with the brownish coloration grading from a gray to light gray	Michigan	Glacial till
Laurel Chert AKA: Raisch-Smith Chert				Mottled and ranges in color from a off white to a light tan or light gray.	Indiana, Ohio, Kentucky	Laurel formation
Lead Creek Chert Type I AKA: Rockport Chert				Opaque, mottled, varying shades of gray commonly having a marbles appearance with patches or streaks of an orange, tan, or gray	Ohio, Indiana, Kentucky	Lead Creek Limestone Formation
Lead Creek Chert Type II AKA Plummer Chert				Opaque, variegated with shades of medium to dark gray. Patches or streaks of orange, tan, or gray and white specks of fossils	Ohio, Indiana, Kentucky	Lead Creek Limestone Formation
Lead Creek Chert Type III AKA: Lieber Chert				Mottled and ranges in colors from a pale blue to a dark navy blue or black.	Ohio, Indiana, Kentucky	Lead Creek Limestone Formation
Lenoir Chert				Dark Gray	Tennessee, Virginia, West Virginia, Kentucky, South Carolina, Georgia, Alabama	Lenoir Limestone Formation
Licking River Chert					Ohio
Liston Creek Chert				Mottled and ranges from light grays, yellows, and tans coloration.	Indiana	Liston Creek Limestone formation
Little Oak Chert				Ranges from a medium dark gray to dark gray.	Alabama	Little Oak Limestone Formation
Lockport Chert				Ranges in color from white to a very light white gray	Michigan, Ohio, Ontario	Goat Island member of the Lockport Formation
Logan County Chert Cedarville-Guelph variation				Ranges in color from a light, dull gray to dull pink. Usually it is speckled with a darker gray	Ohio and Michigan	Cedarville-Guelph formation
Longview Chert Knox variation				Primarily reddish, but white to gray colors do occur	Georgia, Tennessee, South Carolina Alabama, and North Carolina	Longview Member of the Knox formation
Lorrain Quartzite				Ranges in color from a most common white to a less common purple	Ontario, Quebec	Lorrain Formation of the Cobalt Group
Lost River Chert AKA: Bowling Green Chert				Ranges in color from a bluish gray to a light brownish gray	Indiana	Ste. Genevieve Limestone
Louisville Chert				Varies in color from a very light gray to a medium light gray. It is mottled and opaque and may have brownish specks	Indiana, Kentucky	Louisville Limestone formation
Lower Mercer Chert				Bluish gray color with quartz inclusions.	Pennsylvania, Ohio, Kentucky, West Virginia	Lower Mercer Member of the Pottsville Formation
Manitoulin Formation Chert AKA: Cup and Saucer Chert				Varying shades of white	Ontario	Bios Blanc Formation
Macot Dolomite / Chert				Ranges from white to a light to medium gray with with mottling or streaking ranging from pink to red or green	Tennessee, Virginia, Kentucky, North Carolina	Mascot Dolomite Formation of the Newala Group
Maxwell Chert					Ohio	Maxwell Formation
McNairy Quartzite				Tightly packed pale yellowish quartzite with limited or no inclusions. Red staining may be present.	Illinois, Kentucky, 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	Illinois, Kentucky, Missouri, Mississippi, Arkansas	Salem / Ullim Limestone formation
Mistassini Quartzite AKA: Albanel Quartzite				Ranges from a bright white to light gray with light gray inclusions.	Ontario, Quebec, New York, Connecticut, Vermont, Maine	Colline Blanche Formation
Monongahela Chert				Ranges from light to medium gray with limonite staining	West Virginia, Ohio	Uniontown member of the Monongahela Group
Monteagle Chert				Medium gray	Tennessee, Kentucky	Monteagle Limestone formation
Mounds Gravel Chert Lafayette Chert variation				Most commonly ranges from brown to tan, greyish tan, yellowish tan, or cream. Less commonly white, black, pink, red, olive gray or greenish gray	Illinois, Kentucky	Lafayette Gravel Formation
Muldraugh Chert				Ranges in color from light to medium grays, pale brown to an light olive brown or dusty yellow. Variegated or mottling or vugs may be present..	Kentucky, Indiana, Ohio	Muldraugh Formation of the Sanders Group
Mustard Chert (Fort Payne variant)				Ranges from a tannish yellow and olive color to a bluish black and commonly has strings of bryozoan fossils forming a "string of beads".	Georgia, Alabama, Tennessee	Ft Payne Formation
Nellie Blue Chert (Upper Mercer Chert variant)				Gray to medium blue and commonly has white streaks	Ohio, Michigan, Ontario, Pennsylvania, New York	Upper Mercer Limestone of the Pottsville group
Nethers Chert Flint Ridge Chert variation AKA: Ribbon Chert				Banded with colors ranging from light gray to black, pink to red, or tan to brown	Ohio, Indiana, Kentucky, West Virginia, Pennsylvania, Michigan, Ontario	Van Port Member of the Allegheny Formation
New Castle Chert				Ranges from a more common duller variegated light gray to a pale brown or a less common homogeneous bluish gray	Indiana, Kentucky	Silver Creek limestone formation
Newala Chert (Ridge and Valley Chert)				Ranges in color from black to gray, white to faint purple with bands of smoky gray to olive green	Georgia, Alabama	Newala Limestone Formation
Newman Chert				Ranges in color from yellow to tan, red, and orange	Kentucky, Tennessee, Virginia	Newman Limestone formation
Niagara Chert				gray to blue gray in color with speckles of quartz.	Ontario and New York
Norwood Chert AKA: Eastport Chert				Opaque and ranges in color from a light to medium gray. Darker or lighter banding is commonly present, may have darker gray patches present.	Michigan	Petoskey Formation
Obryan Chert AKA: Southern Vanport Chert				Ranges in color from a mottled gray to white with calcium carbonate vermiculate lines	Ohio, Kentucky, West Virginia	Allegheny formation of the Obryan Member
Olive Chert				Homogenous light to medium olive gray may vary from opaque to a semi-translucent.	Michigan	Glacial till
Onondaga Chert AKA: Buttermilk Falls, Black Rock, Clarence, Coniferous, Diver's Lake, Edgecliff, Moore House, Nedrow, Seneca, Fort Erie Chert				Vary from light to dark gray to a mottled bluish gray to a dark brown or black or tan.	Ontario, Quebec, New York, Pennsylvania, Ohio, Michigan, Illinois, Indiana, Kentucky, West Virginia,	Onondaga Limestone Formation
Orthoquartzite				Varies	North America
Paint Rock Agate AKA: Greasy Cove Agate				Colors of yellow, orange, red black, gray, and blue with banding or quartz formation at the center of the nodule occasionally occurring.	Alabama, Tennessee
Paoli Chert AKA: Carter Cave Chert				Translucent and ranges in color from yellow to tan, red, and orange. Rarely green and blue are present	Indiana, Illinois, Kentucky	Paoli Limestone formation
Patuxent - Mattaponi Quartzite AKA: Mattaponi Quartzite				Range in color from a dark white to gray, cream to yellow, and pink to red.	West Virginia, Virginia, Maryland, Pennsylvania	Patuxent / Mattaponi Formation
Petoskey Stone AKA: Agatized Coral				Ranges in color from the most grays to olive greens and pinks	Michigan	Gravel Point formation of the Traverse Group
Piedmont Gravel Quartz				Ranges from bright white to light gray, tan, brown, pink, or red.	Alabama, Mississippi
Pipe Creek Chert AKA: Perkins, Plum Brook, Brook Chert				Ranges from gray to bluish gray or a pale brown, may be mottled or homogenous, light blue cloudy and quartz lined vugs may be present	Michigan, Ohio, Indiana	Tenmile Creek Formation
Plum Rum Chert				Ranges in color from a light tan to grays, pinks and yellows. It is a mottled chert.	Ohio	Van Port formation
Poteet Chert				Ranges from a dark olive gray to olive black.	Virginia, Kentucky, Tennessee	Poteet Limestone Formation
Prout Chert				Ranges in color from a cream to a tan, light gray to a dark gray or blue.	Ohio, Michigan	Prout Dolomite Formation
Providence Bay Chert Fossil Hill variation				A mottled chert ranging in colors from a white to a blue gray or gray and a blue gray to a light tan	Ontario	Fossil Hill Formation
Putnam Hill Chert				Medium gray color	Ohio	Putnam Hill member of the Allegheny formation
Pyburn Chert					Tennessee	Pyburn Limestone Member of the Olive Hill Formation
Quartz				Milky white with thin veins	North America
Quartzite				Varies from white to gray, or pink and tan in color	North America
Ramp Creek Chert					Indiana, Kentucky	Ramp Creek Limestone Member, Muldraugh Formation
Reynales Chert / Silicified Sandstone				Varies in color from a white to light or medium gray or a bluish gray.	Ontario, New York	Reynales formation
Rhyolite				Gray to grayish black, flow banding may be present alternating from light to darker gray	Eastern North America
Rideau Chert					Ontario	March formation of the Beekmantown Group
Salem Chert				Ranges from a dull brown to gray	Illinois, Kentucky	Salem Formation
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	Ontario, Michigan, Ohio	Dundee Limestone Formation
Shakopee Chert				Ranges from white to gray with contrasting banding	Illinois, Indiana, Wisconsin, Minnesota, Iowa, Missouri	Shakopee Dolomite formation
Shady Chert				Ranges from a bluish gray to a yellowish gray blue, or white with mottling commonly present.	Alabama, Georgia, Tennessee, North Carolina, Virginia	Shady Dolomite Formation
Sky Hill Chert AKA: Mahoning Chert				Ranges in color from a light brown or tan to black. The most common color is gray	Ohio, Pennsylvania	Upper Mercer formation of the Pottsville group
Sheguiandah Quartzite AKA: Kikkarney Quartzite, Munising Quartzite				Ranges in color from a white to a light gray and has light rose color staining.	Ontario	Bar Formation
Sonora Flint AKA for Wyandotte Chert				Vibrant colorful flint that may range from tans to light gray-blue and dark brown to purples	Kentucky, Tennessee, Ohio, Indiana	Ste. Genevieve Limestone formation
St. Louis Green Chert AKA: St. Louis Formation Chert				Varying shades from light gray green to yellow green	Illinois, Indiana, Kentucky, Tennessee, Missouri	St. Louis formation
Stanford Chert				Ranges from shades of medium gray with lighter and darker shades occurring with white and gray speckles	Indiana	Ste. Genevieve Limestone formation
Ste. Genevieve Chert				Ranges from light to medium blue, gray, and black, to olive gray and yellowish gray with gray concentric bands commonly present	Illinois, Indiana, Missouri, Kentucky	Ste. Genevieve Limestone formation
Sugar Creek Chert Attica variant				Ranges in color from a bluish gray to olive gray variegated or a tan to a chocolate brown with white cloudy streaks with quartz inclusions occasionally occurring	Indiana	Muldraugh Formation of the Borden Group
Ten Mile Creek Chert				Ranges in color from a dark brownish gray to an olive gray or bluish gray.	Ohio, Pennsylvania, West Virginia	Greene Formation
Transverse Chert				Dark gray	Ohio, Indiana, Michigan	Transverse Limestone formation
Trent Valley Chert AKA: Upper Gull River Chert				Ranges from black or blackish blue with lenticular cream or light tan mottling	Ontario	Upper Member of the Gull River Limestone formation
Tupelo Fort Payne Chert				Light beige to light tan with light gray mottling and may have banding. It has a creamy appearance	Tennessee, Alabama, Mississippi	Fort Payne formation
Tuscaloosa Chert AKA: Red / Yellow Jasper				Ranges in color from white, tan, yellowish tan to yellow or brown, and red. Mottling is not present	Alabama, Mississippi, Tennessee, Georgia	Tuscaloosa Gravel Formation
Tuscumbia Chert AKA: Carmack Chert				Ranges from light to dark gray	Mississippi, Alabama, Georgia, Tennessee	Tuscumbia Limestone Formation
Tyrone Chert AKA: Crab Orchard Chert				Two tone or stripped colors	Kentucky	Tyrone Group
Ullin Chert				brownish gray color	Illinois, Missouri, Kentucky	Ullin Formation
Unakite				Mottled green and pink	Tennessee , North Carolina, Virginia, New Jersey
Upper Mercer Chert				Ranges in color from a medium gray to black	Ohio, Michigan, Ontario, Pennsylvania, New York	Upper Mercer Limestone of the Pottsville group
Van Buren Chert				White	Missouri	Van Buren Limestone Formation
Vienna Chert				Ranges from a deep bluish black to a light grayish tan or pinkish	Kentucky, Illinois, Indiana	Vienna Formation
Warsaw Chert					Tennessee	Warsaw Limestone formation
Wayne County Chert AKA: Kentucky Blue and White Chert				Off white to light tan with white and blue	Kentucky, Tennessee
West Franklin Chert				Ranges from a light gray to light bluish gray. Commonly mottled with blue and with light brown streaks and chalky vugs	Indiana, Illinois, Kentucky
West Patricia Recrystallized Chert					Ontario
Wike Chert Fossil Hill variation				Ranges in color from a white to off white or bluish gray with minimal banding. Chalcedony crystal vugs are present	Ontario	Fossil Hill formation
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	Indiana, Kentucky, Illinois, Missouri, Tennessee	Fredonia Member of the Ste. Genevieve Limestone formation
Zaleski Chert Upper Mercer Chert variation AKA: Black Flint				Glossy black and commonly has white streaks	Ohio, Indiana, Michigan, Ontario, Pennsylvania, New York	Zaleski member of the Allegheny Formation