Marengo Grey Marble
Spain
(Alconera, Badajoz)
Marengo Grey Marble is an elegant grey natural stone with homogeneous grey tones and fine-to-medium grain, offering a versatile aesthetic suitable for urban and architectural applications. Its neutral yet refined appearance, combined with high durability, makes it ideal for interior and exterior floors, walls, and cladding.
Petrographic family: Calcitic-dolomitic marble (predominantly calcitic metacarbonated rock)
Origin / Quarry: Alconera, Badajoz, Spain
Chromatic description: Uniform grey, fine-to-medium grain
Physical-Mechanical Properties (UNE‑EN Standards)
- Apparent Density (EN 1936): 2,730 kg/m³
- Open Porosity (EN 1936): 0.2 %
- Water Absorption (EN 13755): 0.1 %
- Compressive Strength (EN 1926): 148 MPa
- Flexural Strength (EN 12372): 17.8 MPa
- Abrasion Resistance (EN 14157:2024): 20.5 mm
- Frost Resistance (EN 12371, 168 cycles): 0 %
- Slip Resistance:
- CEN/TS 16165:2016 – wet cut: 50
- UNE 41901:2017 – bush-hammered wet: 79
- CEN/TS 16165:2016 – bush-hammered wet: 79
- Impact Resistance (UNE-EN 14158:2004): 2 J
- Thermal Shock Resistance (UNE-EN 14066:2013): –1.3 %
- Reaction to Fire (EN 13501-1): A1 – Non-combustible
- Elastic Modulus (EN 14580): ≈ 75 GPa
- Solar Reflectance Index (ASTM E1980, TECNALIA): 54.4
Chemical & Mineral Composition
- Matrix (CaCO₃): 75.46 %
- Dolomite (CaMg(CO₃)₂): 21.93 %
- Traces:
- FeCO₃: 0.72 % ,
- SiO₂: 1.43 %,
- Al₂O₃: 0.46 %
- Oxide equivalents (stoichiometric conversion, not quantitative):
- CaO: 48.95 %
- MgO: 4.79 %
- FeO (Fe₂O₃ equiv.): 0.50 %
- SiO₂: 1.43 %
- Al₂O₃: 0.46 %
- Loss on ignition (≈CO₂): 43.92 %
- Mohs Hardness: ≈ 3–3.5
Applications & Usage
- Flooring (interior and exterior)
- Wall cladding and facades
- Stairs, thresholds, skirting, handrails
- Countertops, bathroom vanities, and furniture tops
- Public spaces, commercial areas, and architectural features
- Urban and high-traffic areas due to abrasion resistance
Maintenance
- Use pH-neutral cleaners; avoid acids
- Seal polished and honed surfaces for stain protection
- Regular dusting and damp cloth cleaning recommended
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VALEXMAR - Valenciano-Extremena de Marmoles, S.L.
Spain
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Xiamen Asian Stone Imp.& Exp. Co.,Ltd.
China
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The request includes: 1. surface finished, size 2. quantity required
