Name	Natural	Non-heat treated points	Heat treated points	Color details	Primary found in:	Associated Formation / Member
Allentown Chert				Ranges from a medium to dark gray with white streamers with banding commonly present.  Oolitic and stromatolitic.	Southern Vermont	Allentown Formation
Allentown Quartzite				Ranges from a very light gray to a medium light gray.	Southern Vermont	Allentown Formation
Alsen Chert				Mottled dark gray to a dark brownish gray.	Southern Vermont	Alsen Cherty Limestone Formation of the Helderberg Group
Argillite (Generic type)				Light to dark green, but may range to various shades of gray.	North America	Varies
Barker Quartzite				Light green when freshly fractured and weathers to a light or white color	Central Vermont	Barker Quartzite Formation
Beekmantown Chert AKA: Narrows Chert				Dark gray often fossiliferous.	Western Vermont	Beekmantown Geological Group
Cheshire Quartzite AKA: Stissing Quartzite				Ranges from a white to a light gray or a tannish gray	Western Vermont
Clough Quartzite				Ranges from white to a light pink.	Southern Vermont	Clough Quartzite 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.	Southern Vermont	Coeymans Limestone Formation (New Creek Formation), Helderberg Group
Colchester Jasper				Mottled red and mustard yellow color with white quartz running through the material.	Northeastern Vermont	Monkton Formation
Crown Point Chert				Dark bluish black	Northwestern Vermont	Crown Point Limestone Formation of the Chazy Group
Crystal Quartz				clear colorless stone similar to clear glass	Eastern North America
Cutting Chert AKA: Thompson's Point Chert				Ranges from dark gray to black	Southern Vermont	Cutting Dolomite Formation of the Beekmantown Group
Fort Ann Chert				homogenous dark gray to bluish gray or black.	Western Vermont	Fort Ann Formation of the Beekmantown Group
Green Mountain Jasper AKA: Vermont Jasper				Bright red	Northern Vermont
Harlow Bridge Quartzite				Ranges from a tan to light green	Central Vermont	Harlow Bridge Quartzite Member of the Moretown Formation
Hathaway Chert AKA: St. Albans Chert				Ranges from a homogenous olive green to black or a  olive green with black mottling.	Northwestern Vermont	Hathaway Formation
Helderberg Chert				Ranges from mottled white to light cream, light gray, and light blue commonly mottled and fossiliferous.	Southern Vermont	Helderberg Group
Indian River Chert				Red and bluish black weathering white.	Southern Vermont	Indian River Slate Formation
Indian River Slate				Variegated deep maroon and bluish green.	Southern Vermont	Indian River Slate Formation
Kalkberg Chert				Ranges in color from a grayish blue to a black.  This chert is heavily cloudy by opaque patches.  Clastic quartz is present	Southern Vermont	Kalkberg Formation of the Helderberg Group
Kittery Quartzite AKA: Cape Elizabeth Quartzite				Ranges from a light brown to light gray.	Southern Vermont	Kittery Formation of the Merrimack Group
Leyden Argillite				Dark colored	Southern Vermont	Leyden Formation
Little Ascutney Rhyolite				Spherulitic rhyolite.	Southern Vermont	Little Ascutney Stock - Paisanite (rhyolite) Dike
Lowville Chert AKA: Birdseye Chert				Ranges from a dark gray to black.	Northwestern Vermont	Lowville Limestone Formation of the Black River Group
Mistassini Quartzite AKA: Albanel Quartzite				Ranges from a bright white to light gray with medium to dark gray or black streaks or inclusions.	Northern Vermont	Temiscamie Formation of the Mistassini Group
Monkton Quartzite				Ranges from white to light buff on top layers to light shaded of red and pink to brick red or purple.  Red jasper also occurs	West central Vermont	Monkton Formation
Mount Jasper Rhyolite AKA: Neponset Rhyolite				Flow banded spherulitic rhyolite with color ranging from an olive green to brown weathering white.	Northeastern Vermont	Moat Volcanics
Mount Merino Chert AKA: Athens Hills Chert, Pleasentdale Chert, West Athens Hill Chert				Ranges in color from a dark greenish grey to a dark gray or black.	Southern Vermont	Mount Merino Formation of the Normanskill group
New Scotland Chert AKA: Corriganville Chert, Minisink Chert				Ranges from a white to very light colors.	Southern Vermont	New Scotland Formation (Corriganville Formation) of the Helderberg Group
Onondaga Chert AKA: See page				Vary from light to dark gray to a mottled bluish gray to a dark brown or black or tan.	Western Vermont	Onondaga Limestone Formation
Orthoquartzite (Generic type)				Varies	North America	Varies
Port Ewen Chert				Ranges in color from a dark gray to black	Southern Vermont	Port Ewen Formation of the Helderberg Group
Poultney Chert AKA: Deepkill Chert				Ranges from white to a light gray.	Southern Vermont	Poultney Slate Formation, Beekmantown Group
Providence Island Chert				Relatively equal amounts of white chert nodules and a dark bluish gray nodules.	Northeastern Vermont	Providence Island Dolomite Formation of the Beekmantown Group
Quartz				Milky white with thin veins	North America
Quartzite				Varies from white to gray, or pink and tan in color	North America
Reagen Chert				Black and tan to gray with banding commonly present.  Swirls, veins, or mottling may be present.	Northern Vermont
Rhyolite				Gray to grayish black, flow banding may be present alternating from light to darker gray	North America
Ticonderoga Chert AKA: Clarendon Springs Chert, Mount Independence Chert				Dark bluish black with visible phenocrysts of calcite and pyrite inclusions.	Western Vermont	Ticonderoga Dolomite Formation, Beekmantown Group
Whitehall Chert AKA:  Mount Independence Chert				Ranges from a dark gray to a bluish black.	Western Vermont	Whitehall Formation of the Beekmantown Group
Zion Hill Quartzite				Ranges from a light greenish gray to a whitish gray.	West central Vermont	Zion Hill Quartzite Member of the Bull Formation