Name	Natural	Non-heat treated points	Heat treated points	Color details	Primary found in:	Associated Formation / Member
Argillite				Light to dark green, but may range to various shades of gray.	Tennessee
Armuchee Chert AKA: Horse Leg Chert, Frog Mountain Chert				Black to dark or medium gray	South central Tennessee	Frog Mountain formation
Banded Slate					Tennessee
Bangor Chert				Translucent and banded, ranging in color from black to a dark bluish gray or greenish	Southern Tennessee	Bangor Limestone formation
Bangor Limestone AKA: Colbert County Limestone				Medium gray	Southern Tennessee	Bangor Limestone 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	Western Tennessee	Bigby and Cannon Limestone formations
Blue Gray Fort Payne Chert				Opaque gray to bluish gray, or black with tan patches.  White fossil specks are usually present	Western Tennessee	Fort Payne 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	Western to central Tennessee	Brassfield Formation
Bucksnort Chert					Western Tennessee
Buffalo River Chert				Ranges in color from light to dark tans with orangish, reddish and bluish hues.  May have gray or brownish swirls	Southwestern Tennessee	Fort Payne Formation
Burlington Chert				Varies from white to gray or tan.  Banding and mottling may be present.	Western Tennessee	Burlington Formation
Calfkiller Agate AKA: Calf Killer Agate				Mottled with colors of red, yellow, and white	Tennessee
Camden Chert				Mottled white to gray, gray to gray blue, pale yellow to olive-yellow or tan.  Vugs, quarts inclusions, streaking generally present	Western Tennessee	Tuscaloosa Formation
Carter's Chert				Ranges in color from a white to gray with a gray brown mottling or darker gray banding and white speckles.	Central Tennessee
Chepultepec Chert Knox Chert Variant				Ranges from yellow to white and oolitic	Eastern Tennessee	Knox formation
Chickamauga Chert				Ranges from a brownish black to a black in bedded limestone, but ranges to a drab olive green in limestone boulders.	Southeastern Tennessee	Chickamauga Limestone Formation
Chilhowee Mudstone				greenish-gray in color	Eastern Tennessee
Clear Creek Chert				Ranges from a slight yellowing gray to white	Northwestern Tennessee	Overlies the Backbone Limestone formation
Conococheague Chert				Ranges from a gray to a bluish gray, brownish gray, or black.  Small blue to white inclusions may be present.	Eastern Tennessee	Conococheague Limestone Formation
Copper Ridge Chert Knox Chert variant				Ranges in color from medium to dark gray to black	Eastern Tennessee	Knox formation between Nolichucky Shale and Chepultepec limestone
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	Northwestern to north central Tennessee	Crab Orchard member
Crystal Quartz				clear colorless stone similar to clear glass	Tennessee
Decaturville Chert				Porous gray	Western Tennessee	Decaturville Formation of the Helderbergian Group
Del Rio Chert AKA: Bayless Chert				Mottled ranging in colors from yellow to reds, dark blues to black, browns and whites	Western Tennessee
Dongola Chert				Dark tan to dark brown with banding of dark brown	Northwestern 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	Northwestern to north central Tennessee	Fort Payne Formation
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
Florence County Fort Payne Chert				Ranges in color from dark gray to black and is mottled with lighter translucent light blue	Southwestern Tennessee	Fort Payne 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	Tennessee	Fort Payne formation
Harbert Hills Chert					Tennessee
Hardy Creek Chert				Ranges from a brown to a gray or an olive black	Northeastern Tennessee	Hardy Creek Limestone Formation
Harriman Chert / Novaculite AKA: Cypress Creek Chert				Shades of white to light yellow	Northwestern Tennessee	Harriman 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
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).	Southwestern to south central Tennessee	Tuscaloosa Formation
Horse Mountain Agate				Variegated chalcedony with colors of white, amber, red, and black.	South central Tennessee	Hermitage Formation
Kingsport Chert				Ranges from a medium to dark gray	Tennessee, North Carolina, Virginia	Kingsport Formation of the Beekmantown Group
Knox Chert				Ranges from a dark blue to bluish gray with translucent mottling, rarely a reddish color with slight mottling	Eastern Tennessee	Knox formation
Lafayette Gravel Chert				Most commonly ranges from brown to tan, greyish tan, yellowish tan, or cream, less common white and black occur. Mottling or rarely banded	Missouri, Illinois, Arkansas, Louisiana, Mississippi	Lafayette Gravel Formation
Lafayette Quartzite					Missouri, Illinois, Arkansas, Louisiana, Mississippi, Tennessee	Lafayette Gravel Formation
Lenoir Chert				Dark Gray	Tennessee, Virginia, West Virginia, Kentucky, South Carolina, Georgia, Alabama	Lenoir Limestone Formation
Longview Chert Knox variation				Primarily reddish, but white to gray colors do occur	Eastern Tennessee	Knox 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	Eastern Tennessee	Mascot Dolomite Formation of the Newala Group
Monteagle Chert				Medium gray	North central Tennessee	Monteagle Limestone formation
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".	Southeastern Tennessee	Ft Payne Formation
Newman Chert				Ranges in color from  yellow to tan, red, and orange	Northeastern Tennessee	Newman Limestone formation
Orthoquartzite				Varies	Tennessee
Poteet Chert				Ranges from a dark olive gray to olive black.	Northeastern Tennessee	Poteet Limestone Formation
Pyburn Chert					Western Tennessee	Pyburn Limestone Member of the Olive Hill Formation
Quartz				Milky white with thin veins	Tennessee
Quartzite				Varies from white to gray, or pink and tan in color	Tennessee
Rhyolite				Gray to grayish black, flow banding may be present alternating from light to darker gray	Tennessee
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
Sonora Flint AKA for Wyandotte Chert				Vibrant colorful flint that may range from tans to light gray-blue and dark brown to purples	North central to central Tennessee	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
St. Louis Green Chert AKA: St. Louis Formation Chert				Varying shades from light gray green to yellow green	Western Tennessee	St. Louis formation
Tuscaloosa Chert AKA: Red / Yellow Jasper				Ranges in color from white, tan, yellowish tan to yellow or brown, and red	Southwestern to south central Tennessee	Tuscaloosa Formation
Tupelo Fort Payne Chert				Light beige to light tan with light gray mottling and may have banding.  It has a creamy appearance	South central Tennessee	Fort Payne formation
Unakite				Mottled green and pink	Tennessee
Warsaw Chert					Southeastern Tennessee	Warsaw Limestone formation
Wayne County Chert AKA: Kentucky Blue and White Chert				Off white to light tan with white and blue	North central Tennessee
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	Western Tennessee	Fredonia Member of the Ste. Genevieve Limestone formation