Outline is Representative of Size and Shape:
Peisker Diamond Projectile Point
Name Details:
Identified By: Thomas Emerson
Named For:  Goose Lake, American Bottoms, Illinois
Date Identified:  1983
Type Site:  The Florence Street Site (11-5-458), American Bottoms. Illinois
Point Validity: Valid type

Emerson is a distinguished anthropologist and Emeritus Professor for the Department of Anthropology at the University of Illinois Urbana-Champaign. He conducted extensive studies in the American Bottoms. This point was identified in a professional publication and nas numerous professional references. This is considered a valid type.
Goose Lake Knife
Cluster:
Description of Physical Characteristics and Flaking Pattern:
This is a medium to large triangular contracting stem point with an elliptical cross section.  The blade is broad and excurvate.  The shoulders may vary from prominent to weak or absent and at an upward angle.  The stem is contracting with a pointed base.  This point has a random flaking pattern.  
Size Measurements:

Total Length - 50 to 120 mm,  Blade Width - 30 to 45 mm
Commonly Utilized Material:
Additional Comments:

This knife is simlar to and may be an extension of the Peisker Diamond Knife.
Distribution:
Distribution Comments:

This knife is primarily found in the Amercan Bottoms.
Age / Periods:
Date: 2,500 - 2,000 B.P.
Cultural Period: Middle Woodland 
Glacial Period: Neoglacial to Roman Warm
Culture:
Age Details:
Similar Points:
Belknap, Burkett, Dickson, Dunn, Gary, Peisker Diamond, Waubesa
Other points in this cluster / Related / Associated Points:
Pictures: 


Pictures Provided By:






 Goose Lake Projectile Point, Goose LakeArrowhead
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References: (See Reference Page, Entry Number):

30, 100