Rosa Borba
Origin: Portugal
Type: Marble
Macroscopic Description
Rock with granoblastic paved-like texture
Petrographic Description
Rose and white yellow medium grained marble, with greyish veins.
Physico-Mechanical Properties
- Compression Breaking Load: 887 Kg/cm2
- Compression Breaking Load after Freezing Test: 948 Kg/cm2
- Bending Strength: 159 Kg/cm2
- Volumetric Weight: 2712 Kg/m3
- Water Absorption: 0,07%
- Apparent Porosity: 0,2%
- Thermal Linear Expansion Coefficient: 9,8 (10^6 per ºC)
- Abrasion Test: 2,1 mm
- Impact Test: 50 cm
Chemical Properties
- Al2O3: 0,3%
- CaO: 54,96%
- Fe2O3: 0,1%
- K2O: 0,33%
- MgO: 0,32%
- MnO: 0,01%
- Na2O: 0,05%
- P. R.: 42,92%
- SiO2: 1,01%
Microscopical Properties
- Calcite: 99%
- Quartz: 1%