 Kambaldaite from Kambalda and Widgiemooltha is associated with komatiite-associated nickel sulfide gossans and is probably formed by substitution of nickel into carbonates such as magnesite which are formed by oxidation of the lithology, and oxidation of primary and supergene nickel sulfide minerals.Kambaldaite is formed from a similar process to the weathering of other sulfide minerals to form carbonate minerals.The sulfide minerals which are weathered to produce kambaldaite are pentlandite, violarite, millerite and rarely nickeline.