ODM2 Variable Name Controlled Vocabulary ODM2 Working Group A vocabulary for describing the name of Variables. Gibbsite Gibbsite, Al(OH)3, is one of the mineral forms of aluminium hydroxide. It is often designated as γ-Al(OH)3 (but sometimes as α-Al(OH)3.[1]). It is also sometimes called hydrargillite (or hydrargyllite). Wikipedia https://en.wikipedia.org/wiki/Gibbsite Added to support Critical Zone Observatory (CZO) data use cases.