Granito Negro Extremadura, Extremadura Black Granite Slabs

Granite of thin grain and dark color, extracted in the pluton of Burguillos. Good mining and reserves. All kinds of uses.

General Caracteristics:

- Origin: Burguillos del Cerro
- Province: Badajoz
- Colour: Black

• Petrographic description: Amphibole biotite quartz diorite
• Grain size: Thin
• Opened porosity ( %): 0,3
• Apparent density ( Kg/m3): 2930
• Resistance to the graze ( mm): 19,5
• Resistance to the compression ( MPa): 160
• Resistance to the concentrated load deflection (MPa): 17,5
• Microhardness knoop ( Mpa): 2293
• Resistance to shock (cm): 34
• Water absorption for capillarity (g/m” · s0,5): 0,110
• Resistance to ice ( % variation flexion after cycles ): 0
• Resistance to the crystallization of salts (Mass variation): 0,09
• Water Absorption under atmospheric pressure ( %): 0,1
• Break charge (N): 2300