Assertion: gypsum | /r/AtLocation | extensive beds
Facets:
Source sentences:
text: Gypsum occurs in extensive beds associated with other evaporite minerals (e.g., anhydrite and halite), particularly in Permian and Triassic sedimentary formations; it is deposited from ocean brine, followed by anhydrite and halite.
text: Gypsum occurs in extensive beds formed by the evaporation of ocean brine.