Negro Ibiza Limestone

Negro Ibiza Limestone is a unique and visually striking recrystallized fossiliferous limestone, primarily distinguished by its deep black background contrasted by horizontal stripes in a range of colors, including white, red, green, and gold. This natural stone is quarried in Calatorao, located in the province of Zaragoza, Aragon, Spain. Its distinctive appearance makes it highly sought after for various architectural and design purposes.

Physical and Mechanical Properties:

• Color: Predominantly deep black with horizontal stripes of white, red, green, and gold.
• Water Absorption: 0.6%
• Density: 2630 kg/m³
• Flexural Strength: 20.2 MPa
• Compressive Strength: 151.9 MPa
• Hardness: Medium to high (typically measured using the Mohs scale, not provided exactly here)
• Porosity: Generally low due to its recrystallized nature, contributing to its durability.
• Slip Resistance: Varies based on finish; generally, polished surfaces offer lower slip resistance compared to honed or textured finishes.

Chemical and Mineral Compositions (% by Weight):

While specific chemical compositions may vary slightly, typical compositions generally include:

• Calcium Carbonate (CaCO3): Predominantly in the range of 90% or higher.
• Trace amounts of other minerals and oxides that contribute to the unique coloration patterns, such as iron oxides for red hues, chlorites for green, and other mineral impurities.

Usage:

Negro Ibiza Limestone is suitable for a variety of applications, both indoors and outdoors, due to its aesthetics and durability. Common uses include:

• Flooring: Suitable for both residential and commercial spaces.
• Wall Cladding: Interior and exterior applications to enhance architectural aesthetics.
• Countertops: Adds elegance to kitchens and bathrooms.
• Paving: Outdoor spaces like patios, terraces, and pathways.
• Decorative Elements: Fireplaces, stairs, and other custom projects.

Maintenance:

• Regular Cleaning: Use pH-neutral cleaners to maintain its appearance without damaging the stone.
• Sealing: Recommended to protect against stains and moisture penetration, especially in high-traffic or wet areas.
• Avoid Abrasives: Do not use abrasive cleaners or tools that can scratch the surface.

Cutting Sizes (in cm):

Negro Ibiza Limestone is available in various standard sizes, but can also be custom cut:

• Tiles: Common sizes include 30x30, 40x40, 60x30, 60x60.
• Slabs: Available for major installations, typically ranging from 2 cm to 3 cm in thickness.

Surface Finish Options:

• Polished: High gloss finish that enhances the stone's color and veining.
• Honed: Provides a smooth, matte appearance that's less reflective.
• Brushed: Gives a textured feel with a rustic look.
• Bush-Hammered: Rough surface finish ideal for non-slip outdoor applications.
• Sandblasted: Offers a lightly textured finish with a subtle matte look.

Negro Ibiza is a natural stone with a deep black background, accented by white veins and rusty golden hues. It is a Jurassic-era sedimentary rock.

The town of Calatorao, Zaragoza, in the region of Valdejalón, is home to what has traditionally been known as “Piedra Negra de Calatorao.” The exploitation of these quarries dates back many centuries. The earliest documented works trace back to the Arab period, though it is believed that they may have already been quarried during Roman times.

Throughout history, Negro Ibiza has been used in numerous buildings, monuments, streets, and squares. It is formed almost exclusively of black limestone from the Jurassic era which, due to its excellent ability to take polish, is highly prized and widely used as decorative marble.

Technical Properties:

• Water Absorption (UNE-EN 13755:2002): 0.6 %
• Specific Gravity (UNE 22182:1985): 2.63  g/cm3
• Flexural Strength (UNE-EN 12372:1999): 20.2 MPa
• Frost Resistance (Mean Resistance Index H, UNE 22-184-85): 0.01 %
• Compressive Strength (UNE-EN 1926:1999): 151.9 MPa
• Abrasion Resistance (UNE 22-183-85): 0.4 mm
• Knoop Microhardness (UNE 22-188-85): 1.914 MPa