Evening Republican, Volume 23, Number 197, Rensselaer, Jasper County, 16 August 1920 — Formation of Asbestos. [ARTICLE]

Formation of Asbestos.

Asbestos is found in fissures of rock and it is believed that, when the rock was forming and still hot, water penetrated the fissures, widened them and dissolved some of the silica and magnesia. On drying, these crystallized as a hydrated silicate of magnesia, forming threadlike crystals building up from opposite walls of the fissure and meeting in 9ie middle. /