Name	Natural	Non-heat treated points	Heat treated points	Color details	Primary found in:	Associated Formation / Member
Accomack Mudstone				Ranges in color from a light or medium brown to a yellowish mustard brown.	Virginia, Maryland, Delaware	Yorktown and Omar formation estuarine deposits
Allentown Chert				Ranges from a medium to dark gray with white streamers with banding commonly present.  Oolitic and stromatolitic.	West Virginia, Maryland, Pennsylvania, New York, Vermont, Connecticut	Allentown Formation
Allentown Quartzite				Ranges from a very light gray to a medium light gray.	West Virginia, Maryland, Pennsylvania, New York, Vermont, Connecticut	Allentown Formation
Antietam Quartzite AKA: Erwin-Antietam Quartzite				Ranges from bright white to light gray, tan, brown, pink, or red, a greenish brown variation is reported	West Virginia, Virginia, Delaware, Maryland, Pennsylvania,	Antietam Formation of the Chilhowee Group
Aquia Orthoquartzite				Ranges from white to tan, light gray, or brown.  Finer grain can range from tan to brown, gray, yellow, or red.	Delaware, Maryland, Pennsylvania, Delaware	Aquia Quartzite Formation
Argillite (Generic type)				Light to dark green, but may range to various shades of gray.	North America	Varies
Beacon Hill Gravel Chert / Quartzite				Nodules of chert and yellow quartzite.	Maryland, New Jersey	Beacon Hill Formation
Beasley Bay Jasper				Ranges from a mustard yellow to a brownish yellow or red.	Virginia, Maryland, Delaware	Kent Island Formation
Becraft Chert				Light bluish gray to medium gray or black	New York, New Jersey, Maryland, and Virginia	Becraft Limestone Formation of the Helderberg Group
Beekmantown Chert AKA: Narrows Chert				Dark gray often fossiliferous.	West Virginia, Virginia, Maryland, Pennsylvania	Beekmantown Formation
Bellefonte Chert				Ranges from a light to medium gray	Pennsylvania, Maryland, West Virginia, Virginia	Bellefonte Dolomite Formation of the Beekmantown Group.
Brandywine Blue Gneiss AKA: Wilmington Blue Rock				Ranges from a bright blue to a bluish gray.	Delaware, New Jersey, Pennsylvania, Maryland	Brandywine Blue Gneiss Formation of the Wilmington Complex
Broad Run Chalcedony AKA: Wissahickon Chalcedony				Ranges in color from a mottled white to light gray or cream to yellow.  Black specks are present through the material.	Virginia, Delaware, Maryland	Wissahickon Formation
Calvert Silicified Sandstone				Ranges from a light gray to a bluish gray or dark gray	Virginia, Maryland, Delaware	Calvert Formation, Chesapeake Group
Catoctin Greenstone AKA: Catoctin Metabasalt				Ranges from a green to a greenish gray or gray.	Virginia, West Virginia, Maryland, Pennsylvania, Delaware	Catoctin Formation
Catoctin Metarhyolite AKA: Highland Metarhyolite				Ranges from a gray to a  bluish gray, blue, or purple.  Banding, mottling, or breccia with a tannish color may be present.	West Virginia, Virginia, Delaware, Maryland	Catoctin Formation
Cecil Black Chert AKA: Newark Chert				Ranges from a medium gray to black	Delaware, Maryland, Pennsylvania	Newark Gabbro Formation
Chepultepec Chert Knox Chert Variant (Ridge and Valley Chert)				Ranges from yellow to white and oolitic	Georgia, North Carolina, South Carolina, Alabama, Tennessee, Virginia, Maryland, West Virginia, Pennsylvania	Chapultepec Member of the Knox Formation
Chickies Quartzite AKA: Chiques Quartzite, Hellam Quartzite, Edge Hill Quartzite				Ranges from white to gray or tinted pink, tan, green, or blue	Pennsylvania, Maryland	Chickies Formation
Coeymans Chert AKA: New Creek Chert				ranges in color from a bluish black to black.  Cloudy patches of fine pyrite and quartz may be present.	New York, New Jersey, Maryland, and Virginia	Coeymans Limestone Formation (New Creek Formation), Helderberg Group
Cohansey Orthoquartzite				Base color of grayish white with mottled colors including yellow to brown, orange to red, or black	Maryland, New Jersey	Cohansey Formation
Columbia Formation Quartzite				Ranges from a yellowish brown to a reddish brown.	Delaware, Maryland	Columbia Formation
Copper Ridge Chert (Ridge and Valley Chert)				Ranges in color from medium to dark gray to black	Georgia, North Carolina, South Carolina, Alabama, Tennessee, Virginia, Maryland, West Virginia, Pennsylvania	Copper Ridge Member of the Knox formation
Crystal Quartz				clear colorless stone similar to clear glass	Eastern North America
Culpepper Hornfels				Range from a brown to reddish brown or greenish brown and gray to black.	Virginia, Maryland
Flint Run Jasper				Mottled mustard yellow to brown, but gray, red, blue, and green also occur as streaking or inclusions and quartz inclusions.	West Virginia, Virginia, Maryland	Between the Beekmantown Formation and the Blue Ridge Formation
Hardyston Chalcedony				Semi translucent milky white to light blue or light to gray.	Maryland, Pennsylvania, New Jersey	Hardyston Formation
Hardyston Jasper AKA: Berks Jasper, Lehigh Jasper, Pennsylvania Jasper				Ranges from a dark golden yellow to a bright red or dark brown with mottling as well as tiny veins of clear to white translucent chalcedony.	Virginia, Delaware, Maryland	Hardyston Formation
Hardyston Quartzite				Ranges from a milky white to light blue to a light yellowish brown or gray.	Virginia, Delaware, Maryland	Hardyston Formation
Harpers Ferry Quartzite AKA: Oolitic Quartzite				Ranges from a light gray to light blue with round speckles colored dark gray to a bluish gray or cream to light gray	Virginia, North Carolina, Maryland	Possible Harpers Formation of the Chilhowee Group
Heath Farm Jasper AKA: Delmarva Peninsula Jasper				Ranges from a brownish to dark brownish black.	Delaware, Maryland, Pennsylvania
Helderberg Chert				Ranges from mottled white to light cream, light gray, and light blue commonly mottled and fossiliferous.	New York, Maryland, New Jersey, Pennsylvania, Virginia, and West Virginia	Helderberg Group
New Scotland Chert				Ranges from a white to very light colors	New York, Maryland, New Jersey, Pennsylvania, Virginia, and West Virginia	New Scotland Limestone Formation of the  Helderberg Formation Group
Iron Hill Jasper AKA: Newark Jasper				Ranges from a mottled mustard yellow to brown, dark brown, brownish black, and red.	Delaware, Maryland, Pennsylvania	Newark Gabbo Formation
Kanawha Black Chert				Vary from a black to a bluish black /gray to a dark gray	West Virginia and into Pennsylvania, Virginia, Ohio, Maryland, and Kentucky	Kanawha Formation, Pottsville Group
Knox Chert				Dark blue to bluish gray with translucent mottling.  Red Knox Chert has a reddish color with slight mottling.	Georgia, North Carolina, South Carolina, Alabama, Tennessee, Virginia, Maryland, West Virginia, Pennsylvania	Knox Formation
Libertytown Metarhyolite				Ranges from a dark purplish to a bluish black or red with macrophenocycts of pink and white feldspar.	Maryland, Virginia, West Virginia, Pennsylvania	Libertytown Metarhyolite Formation
Licking Creek Chert				Black with sandy texture inclusions.	Pennsylvania, Virginia, Maryland	Licking Creek Member of the Helderberg Formation
Limeport Chert				Ranges from a gray to a bluish gray or black, banding may be present.	Pennsylvania, Maryland, New Jersey	Limeport Member of the Allentown Formation
Longview Chert Knox variation				Primarily reddish, but white to gray colors do occur	Georgia, North Carolina, South Carolina, Alabama, Tennessee, Virginia, Maryland, West Virginia, Pennsylvania	Longview Member of the Knox formation
Martin Point Jasper				Ranges from a mustard yellow to a yellowish brown or red.	Maryland
Meadow Mountain Chert				Mottled blue gray with white streaks present.	West Virginia, Maryland	Possible Foreknob Formation
Mogothy Quartzite AKA: Magothy Quartzite				Ranges in color from gray to bluish gray or purple, banding or mottling may be present.  Small fossils may give a peppered appearance.	Virginia, Delaware, Maryland	Mogothy Formation
New Market Chert AKA: Row Park Chert				Ranges from a dark gray to black.	Virginia, West Virginia, Pennsylvania, Maryland	New Market Limestone Formation of the St. Paul Group
New Scotland Chert AKA: Corriganville Chert				Ranges from a white to very light colors.	New York, New Jersey, Maryland, and Virginia	New Scotland Formation (Corriganville Formation) of the Helderberg Group
Nittany Chert				Ranges from a medium to dark gray with siliceous oolites.  Red jasper also occurs in this formation.	Pennsylvania, Maryland, Virginia, West Virginia	Nittany Dolomite Formation, Beekmantown Group
Onodaga Chert AKA: See page				Vary from light to dark gray to a mottled bluish gray to a dark brown or black or tan.	West Virginia, Virginia, Delaware, Maryland (see page for full list)	Onondaga Limestone Formation
Oriskany Solicified Sandstone				White	New York, Pennsylvania, New Jersey, Maryland, West Virginia, Virginia	Oriskany Sandstone Formation
Orthoquartzite (Generic type)				Varies	North America	Varies
Patuxent - Mattaponi Quartzite AKA: Mattaponi Quartzite				Ranges from gray to a white, light yellow, pink or red.  range sin color from a dark white to gray,  cream to yellow, and pink to red.	West Virginia, Virginia, Maryland, Pennsylvania, North Carolina	Patuxent / Mattaponi Formation
Pinesburg Station Chert				Ranges from a white to very light gray.	West Virginia, Virginia, Maryland, Pennsylvania	Pinesburg Station Formation of the Beekmantown Group
Point of Rocks Jasper				Ranges from a mustard yellow to a yellowish brown with grays also occurring.	Virginia, Maryland
Quartz				Milky white with thin veins	North America
Quartzite				Varies from white to gray, or pink and tan in color	North America
Rhyolite				Gray to grayish black, flow banding may be present alternating from light to darker gray	Eastern North America
Ridgely Quartzite				Ranges from white to a light tan or a medium gray or pink.	West Virginia, Maryland, Virginia	Ridgely Sandstone Member of the Oriskany Formation
Rockdale Run Chert				Ranges from a light to medium gray.	West Virginia, Virginia, Maryland, Pennsylvania	Rockdale Run Limestone Formation of the Beekmantown Group
Shiver Chert				Ranges in color from a medium gray to black	New York, New Jersey, Maryland, and Virginia	Shiver Formation of the Helderberg Group
Stonehenge Chert AKA: Stonehenge - Chepultepec Chert				Ranges from a dark gray to black.	West Virginia, Virginia, Maryland, Pennsylvania, New Jersey	Stonehenge Limestone Formation of the Beekmantown Group
Sugarloaf Mountain Quartzite				White	Maryland	Sugarloaf Mountain Quartzite Formation
Tomstown Chert				Ranges from beds of bluish gray to a yellowish gray blue, or white with mottling commonly present and nodules of white.	Pennsylvania, Maryland, Virginia, and West Virginia	Tomstown Dolomite Formation
Trading Run Chert				Light color ranging from a mottled white to gray, cream to yellow, and pinks with iron staining commonly present.	West Virginia, Virginia, Maryland	Helderberg Formation
Tuscarora Quartzite AKA: Massanutten Quartzite				White and gray	West Virginia, Maryland, Pennsylvania, Virginia	Tuscarora Quartzite Formation of the Judy Gap Group
Uniontown Chert AKA: Waynesburg Chert				Ranges from light to medium gray or yellowish brown with yellow streaks.	West Virginia, Maryland	Uniontown Formation of the Monongahela Group.
Waynesboro Chert AKA: Rome Chert				Ranges from a very dark gray to black	Virginia, West Virginia, and Maryland	Waynesboro Limestone Formation (Rome Limestone Formation)
Weverton Quartzite				Feldspathic and ranges from a grayish white to medium light gray.	Maryland, West Virginia, Virginia	Buzzard Knob Member of the Weverton Quartzite Formation, Chilhowee Group
Wissahickon Quartzite / Vein Quartz				gray quartzite with milky white veins of quartz.	Pennsylvania, New Jersey, Maryland, Delaware	Wissahickon Formation