BLACK RUIVINA
Portugal (Ruivina, São Tiago de Rio de Moinhos, Vila Vicosa, Estremoz, Evora)Black Ruivina Marble is a very dark grey to black background with light streaks metamorphic rock,
Negro Ruivina Marble is a very dark grey to black background with light streaks metamorphic rock,
PHISICAL-MECHANICAL PROPERTIES
Compression Breaking Load: 930 Kg/cm2
Compression B.L. after Freezing Test: 952 Kg/cm2
Bending Strength: 270 Kg/cm2
Volumetric Weigth: 2715 Kg/m3
Water Absorption: 0,05 %
Apparent Porosity: 0,14 %
Thermal Linear Expansion Coefficient: 5,4 10^6 per oC
Abrasion Test: 2,6 mm
Impact Test: 50 cm
Freeze-Defreeze cycles (no alteration after): 48 cycles
MICROSCOPIC PROPERTIES
Calcite: ~98 % Quartz: < 1%
CHEMICAL ANALYSIS
Al2O3: 0,36%
CaO: 55,07%
Fe2O3: 0,09%
K2O: 0,12%
MgO: 0,18%
Na2O: 0,05%
P.R.: 43,42%
SiO2: 1,07%
CO2: 43,42%
P2O5: 0,03%
