Why Does This Lava In Java Burn Blue, Not Orange?Blue lava oozes from the Kawah Ijen volcano of East Java. The flowing molten rock gets its vibrant appearance through the combustion of sulfur gas, which burns blue, as it seeps out from volcanic cracks at high temperatures and reacts with oxygen in the air. The rest of this article is behind a paywall. Please sign in or subscribe to access...
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