Serizzo Formazza, Serizzo Antigorio, Gneiss Blocks, Gneiss Slabs
Stone Name:Serizzo Antigorio
Grey - Gneiss
Origin:Italy
Serizzo Formazza, Serizzo Antigorio, Gneiss Blocks, Gneiss Slabs
Ortogneiss granitoid with a medium homogeneous grain and dark gray color due to the presence of a considerable quantity of biotite mica; it is the darkest of the serizzo varieties. Very evident foliation. Mineralogical composition: abundant quartz, potassium feldspar in small porfiroclasts, plagioclase (An 25-30%), biotite, poor muscovite, ± epidote (allanite).
Extraction area
1 - Trontano 2 - Premia
Geological location
Antigory Falda (lower Pennidic)
Main uses
civil construction
industrial construction
Street furniture
interior design
funerary art