Glass.Ceramic heating, Movie Library – Halogen Point Heater Heating, melting and vitrification of rocks series 43 – Iron tourmaline (Schorl) Sunday February 16th, 2020 HEAT-TECH info This video is a heating, melting and vitrification of Iron tourmaline (Schorl) by the Halogen Point Heater. Please check the following site for more information. Related page: Heating, melting and vitrification of rocks series 48 – Iron manganese (Wolframinate) Heating, melting and vitrification of rocks series 7 – Basalt Heating, melting and vitrification of rocks series 8 – Limestone Heating, melting and vitrification of rocks series 23 – Sandstones Heating, melting and vitrification of rocks series 30 – Amethyst Heating, melting and vitrification of rocks series 33 – Biotite Heating, melting and vitrification of rocks series 34 – Barite Heating, melting and vitrification of rocks series 38 – Goethite