Eisco™ Obsidian Specimen

Description

• Volcanic glass formed through nearly instantaneous quenching of lava Correlates well to Next Generation Science Standards Evidence Statements Obsidian shares many physical properties with its major chemical component, quartz, despite looking dissimilar Despite being dark in color, obsidian is made up of microcrystalline quartz, demonstrated by sharing hardness and conchoidal fracture often exhibited by quartz For use in classroom identification labs and exercises