Gypsumin

Gypsumin is a term used in speculative materials science and fiction to describe a calcium sulfate–based material derived from gypsum (CaSO4·2H2O) that is engineered to have altered hydration states or doped ions. It is not a formally recognized mineral or compound by the International Mineralogical Association, and there is no standard chemical formula in peer‑reviewed sources. In speculative frameworks, gypsumin may denote a family of hydrated calcium sulfate phases with variable water content (for example CaSO4·nH2O, where n can range) and substitutions such as Mg2+, Na+, or Al3+ in the lattice to modify mechanical and thermal properties.

Proposed properties in such sources include low density, rapid setting, and good workability when fresh, along with potential improvements in fire resistance or durability. Reported challenges include sensitivity to moisture and dehydration at elevated temperatures, which can alter structure and performance. Synthesis is described in fiction or hypothetical reviews as involving controlled hydration/dehydration cycles, selective dopant incorporation, and ambient-temperature processing, rather than established laboratory procedures.

Because gypsumin is not an established material, evidence for real-world production methods, consistent properties, or industrial applications is limited to non-peer-reviewed or fictional sources. In scientific discourse, gypsumin is treated as a theoretical concept or placeholder name used to explore how gypsum chemistry might be extended or innovated, rather than as a concrete commodity or mineral.