Name	Natural	Non-heat treated points	Heat treated points	Color details	Primary found in:	Associated      Formation / Member
Abitibi Chert AKA: Lake of the Woods Chert				Ranges in color white mottled with green, to a homogenous dark green	Southern Manitoba	South Kakagi Lake formation
Bakers Narrows Chert				Two variations.  The most common is a dark dense chert with wide irregular lighter colored banding.  The second is a white limestone chert.	West central Manitoba
Calcite
Cat Head Chert				Ranges from a pale yellowish gray to a slightly mottled yellowish gray, black when heat treated	South central Manitoba	Cat Head Member of the Red River Formation.
Greenstone
Hudson Bay Lowland Chert				Bluish gray to a light tan or pale yellow	Eastern Manitoba	Severen, Ekwan, and Stooping river formations
Knife River Flint Knife River Chert, Knife River Chalcedony				Ranges in color from a root beer, tea, coffee, or caramel brown	Southwestern Manitoba	Eocene Golden Valley Formation
Lake of the Woods Chert				Ranges from a white mottled with green to a homogenous dark green to black color	Central to southern Manitoba	South Kakagi Lake Formation
Lake of the Woods Rhyolite				Ranges in color from a greenish gray to less commonly a gray.  Streaks of brown to orangish brown may be present.	Central to southern Manitoba
Red River Chert				Ranges from white to light gray or light brown and may vary from a solid color to mottled	Southern Manitoba
Selkirk Chert AKA: Dundee Chert				Range in color from light gray to yellowish gray, dark gray, , black or brown.  White to light gray bands or clouds are present	Southeastern Manitoba	Dundee Limestone Formation
Souris Gravel Agate				Colors of clear to a waxy yellow, light blue with black inclusions, clear with red or white inclusions, black, and red and green moss agate.  Banding may be present.		Souris Gravel Formation
Swan River Chert				Ranges from a creamy white to gray, pink to a rust, or pale yellow to deep orange, commonly has banding	Southern Manitoba	Souris River Formation, Point Wilks Member