This is an obsidian core — it is the piece of rock from which microblades were formed.
The marks on the core show where the blades were removed. This obsidian core was used to produce long, thin microblades. This is a replica of a type of spear point known as a Folsom Point. Folsom points have been found in many archaeological sites in North America.
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They are smaller than Clovis points and date to about 11, years ago. Stone weights were often attached to spear throwers to increase the power and speed of the spear or dart. This fishing weight, made by drilling a hole in a rock, was used to weigh down fishing lines and nets. Prehistoric Stone Tools For thousands of years before metals were discovered, humans made tools from stone and animal bone.
Large Quartzite Biface This tool is called a biface because it has been flaked on both faces of the rock.
Leaf-shaped Biface Toolmakers had to make many decisions when creating a tool. Clovis Spear Point The Clovis point is a distinctive tool that has been found in archaeological sites across the central and southern United States, dating to about 11, years ago. Obsidian Microblade This very small tool is made of obsidian and is called a microblade.
Obsidian Microblade Toolmakers often used microblades to form composite tools. Obsidian Core This is an obsidian core — it is the piece of rock from which microblades were formed. Obsidian Core This obsidian core was used to produce long, thin microblades. Folsom Point This is a replica of a type of spear point known as a Folsom Point.
Spearthrower Weight Stone weights were often attached to spear throwers to increase the power and speed of the spear or dart. Fishing Weight This fishing weight, made by drilling a hole in a rock, was used to weigh down fishing lines and nets.
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Take a Prehistoric Journey at the Denver Museum of Natural History: Rocks & Minerals: Vol 73, No 5
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