nongypsum
Nongypsum is a term sometimes used colloquially to refer to materials or substances that are not gypsum-based. Gypsum itself is a soft sulfate mineral composed of calcium sulfate dihydrate. It is widely used in construction, particularly for plaster and drywall, as well as in agriculture as a soil conditioner. Therefore, "nongypsum" would describe anything that does not contain this mineral.
This can encompass a vast range of materials. For instance, in construction, a nongypsum building material could