The patent covers the conversion process for halloysite and halloysite-kaolin into advanced, functionalised carbon nanomaterials. Electron microscope photos illustrating varying halloysite-kaolinite content of nanoclay samples from Great White deposit. Andromeda Metals Ltd (ASX:ADN) is a step closer to producing halloysite-kaolin nanomaterials on a commercial scale, following a patent filed by Natural Nanotech, its research and development entity. Natural Nanotech, a joint venture half-owned by Andromeda and Minotaur Exploration Ltd (ASX:MEP) respectively, filed a patent covering the conversion process for halloysite and halloysite-kaolin into advanced, functionalised carbon nanomaterials. Halloysite is a naturally occurring clay material containing oxygen, silicon and aluminium, and can occur mixed with kaolinite, a similar material.