glass
... that glass can form naturally from supercooled volcanic magma?
... that <b id="mwAZU"><a href="./Glass" id="mwAZY" rel="mw:WikiLink" title="Glass">glass</a></b> <i id="mwAZc">(example pictured)</i> can form naturally from <a href="./Supercooling" id="mwAZg" rel="mw:WikiLink" title="Supercooling">supercooled</a> volcanic <a href="./Magma" id="mwAZk" rel="mw:WikiLink" title="Magma">magma</a>?