. "Gypsum-wackestone"@en . . . "Gypsum-wackestone"@en . . "Gypsum-wackestone - A type of gypsum-stone, classified on the basis of its depositional texture. In the Rock Classification Scheme, it is a matrix-supported gypsum-stone composed of less than 75% matrix (mud-grade material smaller than 32 µm). British Geological Survey Research Report RR/99/03, section 7.2 and fig. 11."@en . "GYWST"@en . "stable"@en . .