Encarnado Negrais Limestone is a pinkish/brick red tonalities with dark red and occasionally grey shades and dark red streaks micro-crystalline sedimentary rock.

PHYSICAL-MECHANICAL CHARACTERISTICS
- Mechanical resistance to compression - 1 427 kg/cm2 
- Mechanical resistance to compression after freezing test - 1 145 kg/cm2 
- Mechanical resistance to bending - 124 kg/cm2
- Apparent density - 2 697 kg/m3 
- Water absorption to P.At.N. - 0.15 % 
- Open porosity - 0.41 % 
- Linear thermal coefficient of expansion - 4.3 x10-6 / oC 
- Wear resistance - 2.0 mm 
- Shock resistance: minimum height of fall - 55 cm
CHEMICAL ANALYSIS
SiO2-------------------------------------------------------------- 0.62 %
Al2O3------------------------------------------------------------ 0.00
Fe2O3 (total)---------------------------------------------------- 0.14
MnO-------------------------------------------------------------- n.d.
CaO-------------------------------------------------------------- 54.70
MgO-------------------------------------------------------------- 0.74
Na2O------------------------------------------------------------- 0.04
K2O-------------------------------------------------------------- 0.04
TiO2------------------------------------------------------------- 0.00
P.R.-------------------------------------------------------------- 43.40