Post info here you find about the origins of IVAN materials
e.g. Most everyone knows Mithril is Elven metal from JRR Tolkein's books.
Octiron is described in Terry Pratchett's Discworld universe
http://wiki.lspace.org/wiki/Octiron
Arcanite is and actual real mineral (Potassium Sulphate) http://webmineral.com/data/Arcanite.shtml
Adamant history: http://en.wikipedia.org/wiki/Adamant
e.g. Most everyone knows Mithril is Elven metal from JRR Tolkein's books.
Octiron is described in Terry Pratchett's Discworld universe
http://wiki.lspace.org/wiki/Octiron
Arcanite is and actual real mineral (Potassium Sulphate) http://webmineral.com/data/Arcanite.shtml
Adamant history: http://en.wikipedia.org/wiki/Adamant