Kernite Posted on 4th December 201518th May 2021 by ThePD (The Project Definition) Kernite is a light soft mineral consisting of hydrated sodium borate in crystalline form, and is a major source of borax. Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window) Related Posted in Substance and tagged mineral. ThePD (The Project Definition) ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.