Ruivina Escura Marble Evora Borba Roufimar





Ruivina Escura Marble Evora Borba Roufimar

Ruivina Escura Marble Evora Borba Roufimar


Ruivina Escura Marble Evora Borba Roufimar

Localization
District - ÉVORA
Municipality - BORBA
Parish - S. TIAGO DE RIO DE MOINHOS
Site - RUIVINA

Macroscopic Description
Dark-grey fine grained marble.

Prevailing Applications
Exterior and interior uses. Furniture tops.

Physio-Mecanical Properties
1. Compression breaking load 930 kg/cm2
2. Compression breaking load after freezing test 950 kg/cm2
3. Bending strength 163 kg/cm2
4. Volumetric weight 2720 kg/m3
5. Water absorption at N.P. conditions 0.1 %
6. Apparent porosity 0.2 %
7. Thermal linear expansion coefficient max. val. 5.4 x 10 -6 perº C
8. Abrasion test 2.6 mm
9. Impact test: minimum fall height 50 cm
Obs. Frost resistance is more than 48 freeze-thawing cycles.


General Description of the Quarry
The quarry is little to rather fractured, but has no remarkable tectonic features. Graphitic intercalations can sometimes occur along the bedding planes. Some of the fractures are filled with quartz. Dolomitic intercalations are absent; rare calcite veins can be found. Some of the extracted blocks are of large size; as a rule, their cutting is performed according to the grain plane. The reserves of this stone-type are fairly good.



















Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar
Ruivina Escura Marble Evora Borba Roufimar

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