KnowraObsidianLinked fromLinked fromThe 20 pages that link to Obsidian, each with the reason it gives.All 20Broader topic 7Related 10Compared with 3Igneous rockBroader topic: Obsidian is an extreme case of rapid cooling and minimal crystal growth.LavaBroader topic: It records rapid cooling in certain lava deposits.RhyoliteBroader topic: Rapidly cooled rhyolitic lava can form glass rather than a crystalline rock.Lithic technologyBroader topic: Its glassy fracture supports precise flake production and sourcing studies.Volcanic rockBroader topic: It is a familiar example of volcanic material solidifying without crystals.Volcanic glassBroader topic: It is the best-known example of volcanic glass and shows how silica-rich lava can vitrify.Extrusive rockBroader topic: Obsidian is an extrusive rock whose glassy texture records rapid cooling.