A volcanic rock lava, containing almond-shaped cavities filled with secondary minerals. Example, the Brighton amygdaloid, near Boston. (Sturgis, 1900)
« Back to Glossary Indexamygdaloid
« Back to Glossary Index
A volcanic rock lava, containing almond-shaped cavities filled with secondary minerals. Example, the Brighton amygdaloid, near Boston. (Sturgis, 1900)
« Back to Glossary Index