Materials Identification Guide

Alabama Lithic Material

 











Name Natural Non-heat treated points Heat treated points Color details Primary found in: Associated Formation / Member
Andesite
Generic Type
    North America Varies
Attalla Chert Occurs as a conglomerate or breccia and is light to medium gray.  Primarily has small angular chert fragments in a siliceous matrix. Northeastern Alabama Attalla Chert Conglomerate, Chickamauga Limestone Formation
Argillite
(Generic Type)
  Light to dark green, but may range to various shades of gray. North America Varies
Armuchee Chert
AKA: Horse Leg Chert
(Ridge and Valley Chert)
Black to dark or medium gray Northeastern Alabama Frog Mountain formation
Bangor Chert
(Ridge and Valley Chert)
Translucent and banded, ranging in color from black to a dark bluish gray or greenish Northern Alabama Bangor Limestone Formation
Bangor Limestone
AKA: Colbert County Limestone
  Medium gray Northern Alabama Bangor Limestone Formation
Bibb Chert Dark gray with chert nodules characterized by irregular cavities Central Alabama Bibb Dolomite Member of the Knox Formation
Blue Gray Fort Payne Chert   Opaque gray to bluish gray, or black with tan patches.  White fossil specks are usually present Northern Alabama Fort Payne Formation
Blushing Star Coral
(Species type)
  Ranges from grayish white to gray with darker "star burst" patters present. Southeastern Alabama Tampa Formation
Box Fire Coral
(Species type)
  Encrusted base with thick walled box like structure forming upward. Southeastern Alabama Tampa 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 Northwestern Alabama Brassfield Formation 
Brain Coral
(Species type)
  Brain like shape with ridges and deep interconnected double valleys. Southeastern Alabama Tampa Formation
Brierfield Chert Ranges from a medium to dark blue gray in color characterized by chert with irregular cavities. Central Alabama Brierfield Dolomite Formation
Buffalo River Chert Ranges in color from light to dark tans with orangish, reddish and bluish hues.  May have gray or brownish swirls Northwestern Alabama Fort Payne Formation
Camden Chert Mottled white to gray, gray to gray blue, pale yellow to olive-yellow or tan.  Vugs, quarts inclusions, streaking generally present Northwestern Alabama Tuscaloosa Formation
Carnelian
(Generic Type)
  Translucent and varies in shades from reddish brown to reddish orange. North America Varies
Catahoula Orthoquartzite   Range from white to gray, tan, black, green, or almost clear with black angular inclusions giving a "peppered" appearance. Southwestern Alabama Catahoula Formation
Cheaha Quartzite   Ranges in color from a white to light gray Central Alabama Cheaha Quartzite Member of the Talladega Formation
Chepultepec Chert
Knox Chert Variant
(Ridge and Valley Chert)
Ranges from yellow to white and oolitic Northern Alabama 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. Northeastern Alabama Chickamauga Limestone Formation
Clayton Chert
(Coastal Chert)
Ranges from yellow to brown, though white may occur. Southern Alabama Clayton Formation of the Midway Group
Clear Branch Chert Black North central Alabama Clear Branch Sandstone 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 Northeastern Alabama Conasauga Formation
Copper Ridge Chert
Knox Chert variant
(Ridge and Valley Chert)
Ranges in color from medium to dark gray to black Northern Alabama Copper Ridge Member of the Knox formation
Crystal Quartz   clear colorless stone similar to clear glass Eastern North America  
Flint River Chert
AKA: Butterscotch Chert
(Coastal Chert)
Ranges from a yellowish brown to a medium brown. Southeastern Alabama  Flint River Formation, Vicksburg Group
Florence County Fort Payne Chert Ranges in color from dark gray to black and is mottled with lighter translucent light blue Northern Alabama 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 Northern Alabama Fort Payne Formation
Fossilized Coral
AKA: Agatized Coral, Silicified Coral, Coral Chalcedony
(Generic Type)
  Ranges from clear to white, grayish blue, brown, tan, or yellow.  Starburst patterns or banding may be present. Southeastern Alabama Tampa Formation
Glendon Chert
(Coastal Chert)
Ranges from white to a creamy tan or brown with dark gray, black, and bluish white also occurring.  Clear chalcedony and mottling commonly occurs.  Southern Alabama Glendon Limestone Formation, Vicksburg Group
Hattiesburg Orthoquartzite   Gray opal cemented quarttztic siltstone or sandstone that may have shades of light brown or tan giving a mottled appearance.  Southwestern Alabama Hattiesburg 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). Northern Alabama Tuscaloosa Formation
Jefferson County Fort Payne Chert Mottled light tan to white, beige is the most common color Northern Alabama Fort Payne Formation
Jemison Chert Commonly a light gray with iron staining. Central Alabama Jemison Chert Formation, Talladega Group
Kalona Quartzite Ranges from a light gray to a light brown or white. South central Alabama Kalona Quartzite Member, Wash Creek Slate Formation,
Ketona Chert
Knox Chert variation
Light gray Northern Alabama Ketona Dolomite Member of the Knox Formation
Knox Chert   Dark blue to bluish gray with translucent mottling.  Red Knox Chert has a reddish color with slight mottling. Northern Alabama Knox Formation
Lenoir Chert Dark Gray Northeastern Alabama Lenoir Limestone Formation
Lisbon Chert
AKA: McBean Chert, Silicified Chert Hash
(Coastal Chert)
Ranges from red to yellow or cream to blue.  Mottling or striping may be present.  Jasper and chalcedony also occur in this formation. East central Alabama Lisbon Limestone Formation of the Clairborne Group
Little Oak Chert Ranges from a medium dark gray to dark gray. North central Alabama Little Oak Limestone Formation
Longview Chert
Knox variation
Primarily reddish, but white to gray colors do occur Northern Alabama  Longview Member of the Knox Formation
Marianne Chert
AKA: Mint Springs Marl
Ranges from a white to cream color Southern Alabama Mint Springs Marl Member of the Marianna Limestone Formation, Vicksburg Group
Mountainous Star Coral
Orbicella Faveolata
(Species type)
  Solid, very large dome or stumped shaped with small lumps, bulges, or lobes. Southeastern Alabama Tampa 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". Northeastern Alabama Ft Payne 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 Northeastern Alabama Newala Limestone Formation
Ocala Chert
AKA: Jackson Stage Chert
(Coastal Chert)
Ranges in color from a a white to a cream or tan, yellow, red, and black colors also occur.  Fossil inclusions commonly occur.  Southeastern Alabama Ocala Limestone Formation, Jackson Group.
Orthoquartzite
(Generic Type)
  Ranges from white to tan, red green, brown, or black. North America Varies
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.  Northeastern Alabama  
Petrified Wood
AKA: Agatized Wood, Opalized Wood
  Vary in color based on the minerals present during the process North America Varies
Piedmont Gravel Quartz
  Ranges from bright white to light gray, tan, brown, pink, or red. West central Alabama  
Quartz
AKA: Vein Quartz
  Milky white with thin veins
North America Varies
Quartzite
(Generic Type)
  Varies from white to gray, or pink and tan in color North America Varies
Randall Creek Petrified Wood   Shades of cream, tan, and brown with wood grain or rings commonly present. Southeastern Alabama  
Rhyolite
(Generic Type)
  Gray to grayish black, flow banding may be present alternating from light to darker gray North America Varies
Shady Chert Ranges from a bluish gray to a yellowish gray blue, or white with mottling commonly present.  Northeastern Alabama Shady Dolomite Formation
Staghorn Coral
(Species type)
  Cylindrical branches Southeastern Alabama Tampa Formation
Suwannee Chert
(Coastal Chert)
Ranges from brown to a creamy tan with dark gray, black, and bluish white also occurring, chalcedony, mottling, or banding may occur.  J Southeastern Alabama Suwannee Limestone Formation, Vicksburg Group
Tallahatta Chert
AKA: Tallahatta Chert, Alabama Agate
  Glossy multicolored chert that may vary from red to amber, yellow, and blue. Southern Alabama Tallahatta Formation, Clairborne Group
Tallahatta Quartz
AKA: Tallahatta Sandstone, Snowflake Quartzite
  Light gray arenite with white specks giving a snowflake appearance. Southern Alabama Tallahatta Formation, Clairborne Group
Tampa Chert Ranges from a yellow to a tan or brown with medium to dark gray also occurring.  Chalcedony or quartz filled vugs are commonly present.. Southeastern Alabama Tampa Limestone Formation
Tuff
AKA: Solidified Volcanic Ash
  Contains greater than 75 volcanic ash and ranges from white to tan, gray or pink. North America Volcanic activity
Tupelo Fort Payne Chert Light beige to light tan with light gray mottling and may have banding.  It has a creamy appearance Northern Alabama 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 Northern Alabama Tuscaloosa Gravel Formation
Tuscumbia Chert
AKA: Carmack Chert
  Ranges from light to dark gray Northern Alabama Tuscumbia Limestone Formation