Niwala Rosa Limestone

Niwala Rosa Limestone is a distinctive pinkish-yellow to pale pink limestone that is renowned for its abundance of fossils, chiefly biocalcarenite rock. It primarily consists of calcite and quartz, and its unique composition results in a beautiful, organic appearance.

Pattern & Texture:

• Fossil Inclusions: The presence of abundant shell fragments and bioclastic remains creates a natural, textured pattern. Each slab has a unique appearance due to these organic inclusions.
• Grain & Surface: The limestone has a fine to medium grain with a slightly porous surface, characteristic of biocalcarenite rocks. Its texture can also be aligned with the Lumachelle type of biocalcirrudita stones.
• Pattern Variations: Subtle linear or cloudy patterns may appear alongside fossil details.

Physical and Mechanical Properties:

• Water Absorption: 4.6%
• Density: 2180 kg/m³
• Flexural Strength: 71.0 - 91.29 kg/cm²
• Compressive Strength: 537.64 kg/cm²
• Hardness: Moderate; typical of limestone materials, making it workable.
• Porosity: Slightly porous, affecting water absorption and needing special care for treatment against stains.
• Slip Resistance: Varies depending on surface finish but generally moderate due to its natural texture.

Chemical and Mineral Composition (% by weight):

• Calcite (CaCO3): Dominant component
• Quartz (SiO2): Present in substantial amounts
• Other Minerals: Minor amounts of clay, feldspar, and siderite may also be present, specific compositions can vary depending on the exact location within the quarry.

Usage:

• Indoor Flooring and Wall Cladding: Due to its aesthetic appeal and texture.
• Exterior Cladding: Occasional use in exterior applications, provided it is properly sealed.
• Decorative Elements: Fireplace surrounds, garden decorations, and sculptures that benefit from the stone’s natural beauty.

Maintenance:

• Sealing: Regular sealing recommended due to porosity.
• Cleaning: Mild, non-acidic cleansers to avoid damage to calcite.

Common Surface Finish Options:

• Polished: Enhances color and fossils but may reduce slip resistance.
• Honed: Matte finish that balances aesthetics with practicality.
• Brushed: Adds texture, emphasizing fossil inclusions for a more rustic look.
• Bush-Hammered: Provides a rugged texture, enhancing slip resistance.

Niwala Rosa Limestone, with its natural beauty and unique textural properties, remains a popular choice for architects and designers seeking a distinctive and organic material for various construction and decorative projects. Regular maintenance, including sealing and appropriate cleaning, will help preserve its appearance over time.