Limy re-crystallized of Cambrian age and of thin grain. Good mining. Medium to big blocks.

Characteristic Generales:

- Origin: Alconera
- Province: Badajoz
- Colour: Dark grey

• Petrographic description: Limestone partially dolomite
• Opened porosity ( %): 0,2
• Apparent density ( Kg/m3): 2730
• Resistance to the graze ( mm): 25,5
• Resistance to the compression ( MPa): 148
• Resistance to the concentrated load deflection (MPa): 13,1
• Microhardness knoop ( Mpa): 1873
• Resistance to shock (cm): 24
• Water absorption for capillarity (g/m” · s0,5): 0,14
• Resistance to ice ( % variation flexion after cycles ): 13
• Water Absorption under atmospheric pressure( %): 0,1
• Break charge (N): 2350