Basalt fiber
Basalt fibers are made from basalt by melting it and then turning the melt into fibers. Basalt is an igneous rock formed from magma that cools rapidly, leading to the formation of very small crystals.
Basalt fibers are made from basalt by melting it and then turning the melt into fibers. Basalt is an igneous rock formed from magma that cools rapidly, leading to the formation of very small crystals.
Basalt fibers are made from basalt by melting it and then turning the melt into fibers. Basalt is an igneous rock formed from magma that cools rapidly, leading to the formation of very small crystals.
Source: Wikipedia "Basalt fiber" · CC BY-SA 4.0
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