Basalt Series

The not-quite microscopic strands of basalt fiber are created by taking basalt, a common volcanic rock, heating it to 1,500°C, and spinning the melted rock through a fine nozzle. The resulting material is commonly then either woven into a heat-resistant fabric, or used to reinforce materials. When used to reinforce polymers, the resulting material is cheaper than carbon fibre and stronger than fibreglass.