A fine-grained metamorphic lithotype composed of subeuhedral/euhedral calcitic blasts with rounded and/or sutured grain boundaries that are also sometimes but rarely interlobed and generally clear. The mosaic is inequigranular and the blasts vary in size between 200 and 400 µm. Veins and patches occur composed of calcitic blasts clouded by microgranulations of opaque minerals and microblisters, calcitic microcrystals (50 ÷ 70 µm) that are also clouded to some extent, acicular muscovite and pyrite (< 30 µm). Trace amounts of secondary quartz are also present which fill the existing pores.