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.	Western Ohio	Muldraugh Formation of the Sanders Group
Argillite				Light to dark green, but may range to various shades of gray.	Ohio
Banded Slate					Ohio
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.	Northwestern Ohio	Bayport Limestone formation
Berea Sandstone				Light gray to a buff	Ohio	Waverly Group
Bisher Chert AKA: Highland Chert, Lilley Chert				Ranges in color from a white to yellow including mottled tan and creams.	Southwestern Ohio	Bisher Dolomite formation
Bloomville Chert				Ranges from a mottled or banded light gray to a dark gray.	Northern Ohio
Boggs Chert AKA: Blunt Run Chert				Ranges in color from a dark gray to black with numerous white or light colored speckles from fossils	Southeastern Ohio	Boggs member, Pottsville Group
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	Southwestern Ohio	Brassfield Formation
Briar Hill Sandstone				Golden tan	Central Ohio
Broyle Chert				Vary in color from yellows to tan or blues.  The cortex is white and chalky.  Rarely may be translucent	Southwestern Ohio	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	Southern  Ohio	Conemaugh Group
Cambridge Chert AKA: Nadine Chert				Gray colored chert	East central Ohio	Cambridge Member (Nadine Limestone Formation) of the Conemaugh Group
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	Northwestern Ohio	Cedarville-Guelph formation
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	Extreme southwestern Ohio	Jeffersonville Limestone formation
Columbus Chert				Ranges in color from a white to a light gray	Northwestern Ohio	Columbus Limestone 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	Pottsville formation
Crystal Quartz				clear colorless stone similar to clear glass	Ohio
Delaware Chert AKA" Marble Cliff Chert, Scioto Chert				Range from a dull tan to almost a black chocolate brown	Northern Ohio	Delaware 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	Western to central Ohio	Fort Payne Formation
Eversole Chert Columbus Chert variant				light colored chert, impure in nature	Central Ohio	Columbus formation
Fairfield County Chert				Light grayish blue color	Southwestern central Ohio	River cobble
Fishpot Chert				Primarily light to dark brown and gray in color.  High quality  similar to chalcedony.  Light banding with small bluish gray chalcedony inclusions.	East central Ohio	Monongahela group, Fishpot limestone member
Flint Ridge Chert /Chalcedony AKA: Van Port Chert, Raccoon Creek Chert				White to bluish hues with bands of light gray, reds, and yellows	Ohio	Van Port Member of the Allegheny Formation
Fort Payne 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	Extreme southern Ohio	Fort Payne formation
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.	Southwestern Ohio	Salamonie formation, Laurel member
Greenfield Chert				Ranges from a light to dark gray with white chalcedony / quartz inclusions..	Extreme southern Ohio	Greenfield formation, Saline Group
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.	Southeastern Ohio	Allegheny formation, Hamden member
Harrison Chert AKA: Maxville Chert				Ranges in color from a white to an off white or light gray with dursy inclusions	East central Ohio	Harrison and Maxville member, Pottsville group
Huronia Chert AKA: Lower Gull River Chert				Bluish gray mottled or banded with brownish-grey or greyish-beige colors, commonly speckled with light/dark grey, or grey-black	Extreme northeastern Ohio	Fontenac Axis member of the Gull River formation
Jeffersonville Chert				Ranges from white to cream or light yellow to tan and medium brown darker brown bands appearing jagged and interspersed	West central to central Ohio	Jeffersonville Limestone formation
Kanawha Black Chert				Vary from a black to a bluish black /gray to a dark gray	Southeastern Ohio	Kanawha formation
Laurel Chert AKA: Raisch-Smith Chert				Mottled and ranges in color from a off white to a light tan or light gray.	Southwestern Ohio	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	Southwestern Ohio	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	Southwestern Ohio	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.	Southwestern Ohio	Lead Creek Limestone Formation
Licking River Chert					Ohio
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	Northwestern Ohio	Cedarville-Guelph formation
Lower Mercer Chert				Bluish gray color with quartz inclusions.	Southeastern to east central Ohio	Lower Mercer Member of the Pottsville Formation
Maxwell Chert					Ohio	Maxwell Formation
Monongahela Chert				Ranges from light to medium gray with limonite staining	Extreme east central Ohio	Uniontown member of the Monongahela Group
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..	West central to southwestern Ohio	Muldraugh Formation of the Sanders Group
Nellie Blue Chert (Upper Mercer Chert variant)				Gray to medium blue and commonly has white streaks	Ohio	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	Van Port Member of the Allegheny Formation
Obryan Chert AKA: Southern Vanport Chert				Ranges in color from a mottled gray to white with calcium carbonate vermiculate lines	Extreme southern Ohio	Allegheny formation of the Obryan Member
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.	Northern Ohio	Onondaga Limestone Formation
Orthoquartzite				Varies	Ohio
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	Extreme northwestern Ohio	Tenmile Creek Formation
Plum Rum Chert				Ranges in color from a light tan to grays, pinks and yellows.  It is a mottled chert.	East central Ohio	Van Port formation
Putnam Hill Chert				Medium gray color	East central to southeastern Ohio	Putnam Hill member of the Allegheny formation
Quartz				Milky white with thin veins	Ohio
Quartzite				Varies from white to gray, or pink and tan in color	Ohio
Rhyolite				Gray to grayish black, flow banding may be present alternating from light to darker gray	Ohio
Prout Chert				Ranges in color from a cream to a tan, light gray to a dark gray or blue.	Northeastern Ohio	Prout 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	Extreme east central Ohio	Upper Mercer formation of the Pottsville group
Sonora Flint AKA for Wyandotte Chert				Vibrant colorful flint that may range from tans to light gray-blue and dark brown to purples	Southwestern Ohio	Ste. Genevieve Limestone formation
Ten Mile Creek Chert				Ranges in color from a dark brownish gray to an olive gray or bluish gray.	Extreme east central Ohio	Greene Formation
Transverse Chert				Dark gray	Northwestern Ohio	Transverse Limestone formation
Upper Mercer Chert				Ranges in color from a medium gray to black	Ohio	Upper Mercer Limestone of the Pottsville group
Zaleski Chert Upper Mercer Chert variation AKA: Black Flint				Glossy black and commonly has white streaks	Ohio	Zaleski member of the Allegheny Formation