Types of Stone Used To Create Flake Tools
Certain types of stone work better for creating flake tools than others. There are two important characteristics when it comes to creating flake tools, cryptocrystalline and conchoidal fracture. Cryptocrystalline relates to a stone structure that is made up of such minute crystals that its crystalline structure is only vaguely revealed. Conchoidal fracture describes the way in which materials break when they do not follow the natural planes of separation. Examples of such materials include fine-grained materials, such as carbonado, volcanic rocks, obsidian, onyx, and types of glass. These would all be excellent materials for creating flake tools.
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