Kalinite is a mineral composed of hydrated potassium aluminium sulfate (a type of alum).

A proposal to remove recognition of kalinite as a mineral species was submitted to the International Mineralogical Association;[5] however, kalinite is still on the list of approved minerals.

[7] Many older samples, however, have been found to be potassium alum.

[3] Kalinite is a rare secondary mineral observed in the oxidized zone of mineral deposits, as efflorescence on alum slates, in caves, and as a volcanic sublimate.

[8] It is associated with jarosite, KFe3+3(SO4)2(OH)6, and cuprian melanterite (pisanite), (Fe2+,Cu2+)SO4·7H2O, at Quetena, Chile.