Glass.Ceramic heating, Movie Library – Halogen Point Heater Heating, melting and vitrification of rocks series 32 – Silicic plaster (Anhydrite) Wednesday November 13th, 2019 HEAT-TECH info This video is a heating, melting and vitrification of Silicic plaster (Anhydrite) by the Halogen Point Heater. Please check the following site for more information. Related page: Heating, melting and vitrification of rocks series 23 – Sandstones Heating, melting and vitrification of rocks series 26 – Chalcopyrite Heating, melting and vitrification of rocks series 27 – Fluorite Heating, melting and vitrification of rocks series 30 – Amethyst Heating, melting and vitrification of rocks series 22 – Coral stone Heating, melting and vitrification of rocks series 31 – Tiger eye stone Heating, melting and vitrification of rocks series 28 – Snowflake obsidian Heating, melting and vitrification of rocks series 29 – Blue Aragonite