Calacata Vagli

STANDARD		U.M.	MEAN VALUE	ST. DEV.
EN 13755-08	Water absorption at atmospheric pressure	%	0,14	0,01
EN 1936-07	Apparent Density	KG/m3	2710	4,1
EN 1936-07	Open porosity	%	0,4	0,03
EN 12372-07	Flexural strength
	(in natural conditions)	MPa	18,2	1,6
	(EN 12371-03 exposed to 48 frost cycles	MPa	13,9	3,2
EN 1926-07	Uniaxial compressive strength	MPa	99,2	18,5
EN 14231-04	Slip resistance (honed finishing)
	(dry)	USRV	69	2,6
	(wet)	USRV	33	1,6

A crystalloblastic metamorphic lithotype with an anisotropic structure. The clasts are composed of anhedral calcitic blasts that are interlobed, flattened, iso-oriented and evenly sized and can reach up to 250 µm (although most crystals are approximately 60 µm). Inside the mosaic are frequent nodules that are sometimes plurimillimetric (< 7 mm) and are composed of crystals of a relict appearance that are anhedral and interlobed of an average size of around 300 µm. The crystals are particularly clouded by microgranulations of opaque minerals in the most external corona, while in the central part they are deformed and sometimes associated with quartz. Around the clasts are veins that are sometimes irregular in pattern composed of abundant opaque minerals including limonitic oxides, calcitic blasts (< 400 µm) and rhombic dolomitic blasts.

Slabs are preferably cut against the grain and perpendicular to the grain, i.e. the hard way and the easy way, yet vein cuts are also common.

Cutting of blocksSurface lavoration