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•  glass (... of magma, and highly suitable for ...)
•  groundwater (Water contained in the void space within rocks, and usually taken to mean rainwater or other ...)
•  igneous rock (Molten material that flows up as magma from the deeper part of the earth’s crust (asthenosphere ...)
•  lava (Rocks formed by molten magma flows and that include andesites, basalts, phonolites, rhyolites ...)
•  obsidian (Volcanic glass produced as a result of the rapid cooling of a molten magma flow, often used as ...)