Massachusetts Lithic Material
| Name | Natural | Non-heat treated points | Heat treated points | Color details | Primary found in: | Associated Formation / Member |
| Alsen Chert |
 |
 |
|
Mottled dark gray to a dark brownish gray. | Western Massachusetts | 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 | |
|
Attleboro Red Felsite AKA: Wamsutta Rhyolite |
 |
  |
Very
dark reddish brown |
Southeastern Massachusetts | Wamsutta Formation | |
| Barrington Argillite |
|
  |
Gray | Southeastern Massachusetts | ||
|
Beekmantown Chert AKA: Narrows Chert |
 |
|
|
Dark gray often fossiliferous. | Western Massachusetts | Beekmantown Geological Group |
| Blue Hills River Felsite / Rhyolite |
|
|
|
Northeastern Massachusetts | ||
| Braintree Hornfels |
 |
   |
Varies from a medium to dark gray | Eastern Massachusetts | Braintree Argillite Formation | |
| Briarcliff Chert |
|
|
|
Light with darker patches. | Western Massachusetts | Briarcliff Dolomite Formation of the Wappinger Group |
|
Cheshire Quartzite AKA: Stissing Quartzite |
 |
|
Ranges from a white to a light gray or a tannish gray | Western Massachusetts | ||
| Clough Quartzite |
|
|
Ranges from white to a light pink. | Western Massachusetts | 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. | Western Massachusetts | Coeymans Limestone Formation (New Creek Formation), Helderberg Group |
| Crystal Quartz |
 |
  |
clear colorless stone similar to clear glass | Eastern North America | ||
| Hatch Hill Chert |
|
|
|
Bluish black weathering black | Western Massachusetts | Hatch Hill Formation |
| Helderberg Chert |
 |
|
|
Ranges from mottled white to light cream, light gray, and light blue commonly mottled and fossiliferous. | Western Massachusetts | Helderberg Group |
| Hingham Felsite |
 |
  |
Ranges from a deep red to purple with banding with dull yellow inclusion commonly present as well as small phenocysts. | Eastern Massachusetts | ||
| Kalkberg Chert |
 |
 |
|
Ranges in color from a grayish blue to a black. This chert is heavily cloudy by opaque patches. Clastic quartz is present | Western Massachusetts | Kalkberg Formation of the Helderberg Group |
|
Kittery Quartzite AKA: Cape Elizabeth Quartzite |
|
|
Ranges from a light brown to light gray. | Massachusetts | Kittery Formation of the Merrimack Group | |
| Leyden Argillite |
|
|
Dark colored | Northwestern Massachusetts | Leyden Formation | |
|
Marblehead Felsite AKA: Lynn Rhyolite |
|
  |
Ranges from a dark gray to black with phenocryst inclusions of felsite. | Northeastern Massachusetts | Lynn Volcanics | |
| Mattapan Felsite |
|
|
Northeastern Massachusetts | Mattapan Volcanics | ||
| Nantasket Argillite |
|
  |
Dark gray to black on freshly fractures surfaces weathering to a tan to pale green or green. | Eastern Massachusetts | ||
| New Haven Arkose |
 |
|
Ranges from a pink to red or gray indurated arkose. | Massachusetts | Hew Haven Formation | |
|
New Scotland Chert AKA: Corriganville Chert, Minisink Chert |
|
|
|
Ranges from a white to very light colors. | Western Massachusetts | New Scotland Formation (Corriganville Formation) of the Helderberg Group |
|
Normanskill Chert AKA: Deepkill Chert, Coxsackie Chert |
 |
  |
Range from a light green to a dark green or brownish green with darker bands being present. | Western Massachusetts | Mount Merino and Indian River Formations of the Normanskill 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 Massachusetts | Onondaga Limestone Formation |
|
Orthoquartzite (Generic type) |
 |
|
Varies | North America | Varies | |
| Port Ewen Chert |
|
|
|
Ranges in color from a dark gray to black | Western Massachusetts | Port Ewen Formation of the Helderberg Group |
| 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 | North America | ||
|
Saugus Jasper AKA: Saugus Rhyolite |
 |
  |
 |
Ranges from a dark red to pink with thick veins of cream or pale yellow commonly occurring. | Eastern Massachusetts | Lynn Volcanics |
| Tower Hill Quartzite |
|
|
Light gray | Northeastern Massachusetts | Tower Hill Quartzite Formation | |
| Vaughn Hills Quartzite |
|
|
Central Massachusetts | Vaughn Hills Formation | ||
|
Westboro Quartzite AKA: See page |
 |
|
Ranges from a white to a light gray or light tan. | Central Massachusetts | Albion Schist Formation |