Also called chert this rock was used by early man for tools

Below you can find the Also called chert this rock was used by early man for tools Jeopardy Words Answer. The answer to Also called chert this rock was used by early man for tools has 5 letters. This clue belongs to the General science category and is part of Jeopardy Word Level 1853. If you scroll near the bottom you will find other clues and answers part of level 1853