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Name: Types of Rocks - Super Teacher Worksheets

rock is obsidian, which you pronounce “ub-sid-ee-un.” This is a shiny black volcanic rock with sharp edges that was often used for knife blades and arrowheads. The second major type of rock is sedimentary, pronounced “said-uh-men-tare-ee.” It means “sitting rock.” Super Teacher Worksheets - www.superteacherworksheets.com