Speranza Quartzite Overview

Speranza Quartzite is a striking natural stone quarried from the Quixaba Mine in Pio IX City, Piaui State, Brazil. It is renowned for its captivating aesthetic characterized by a dark green background intertwined with yellow-green veins, which are further adorned by white veins and markings. Its palette of soft light to dark hues enhances its depth and visual interest, making it a popular choice in luxury design projects.

Physical and Mechanical Properties

• Water Absorption: 0.09%
• Density: 2899 kg/m³
• Flexural Strength: 10.31 MPa
• Compressive Strength: 121.7 MPa
• Hardness: Typically exhibits high hardness; suitable for various applications involving wear and tear.
• Porosity: Low; enhances its durability and resistance to staining.
• Slip Resistance: Generally good, but depends on the finish applied; can be tailored to specific needs.

Chemical and Mineral Composition (Approximate % by Weight)

• Quartz: Predominant mineral; provides strength and durability.
• Mica: Adds to the stone’s natural shimmer.
• Iron Oxides: Contributes to the color variations and vein patterns.
• Silica (SiO2): High content, typical of quartzite.

Usage

• Flooring: With its durability and slip resistance, it's ideal for high-traffic areas.
• Countertops: Offers a unique aesthetic with the added benefit of resilience against scratches and heat.
• Wall Cladding: Adds luxury and elegance to interior and exterior wall applications.
• Feature Walls: Perfect for creating focal points with its distinct veining and coloration.
• Staircases: Both aesthetically appealing and functional for high-use environments.

Maintenance

• Regular Sealing: Recommended to protect against stains and enhance longevity.
• Cleaning: Use a mild detergent and avoid acidic or abrasive products to maintain surface quality.
• Immediate Spill Management: Helps prevent potential staining on lighter areas.

Cutting Sizes

Common size options available in centimeters, typically customized to project needs; examples include:

• Slabs: Customizable depending on quarry output.
• Tiles: Frequently available in sizes such as 30x30 cm, 60x60 cm, etc.

Surface Finish Options

• Polished: Brings out the stone’s colors and patterns with a glossy finish.
• Honed: Offers a smooth, matte appearance that reduces glare.
• Leathered: Provides a textured, rippled effect that adds depth.
• Brushed: Creates a worn appearance that enhances the stone's natural character.
• Natural Cleft: Retains the stone’s original rugged texture for rustic applications.

Speranza Quartzite's unique characteristics, coupled with its physical robustness and aesthetic versatility, make it a prime choice in both residential and commercial design endeavors. Its maintenance requires simple care, ensuring its beauty and functionality endure over time.

PHYSICAL TESTING

• Apparent density (dry)  2899 kg/m3
• Apparent density (saturated) 2901 kg/m3
• Apparent Porosity  0,25 %
• Water absorption  0,09 %
• Bending strength – Breaking strength (dry) 279,30 kgf/cm² *
• Bending strength – Breaking strength (saturated)  267,40 kgf/cm² *
• Propagation speed of longitudinal ultrasonic wave (dry)  5.397 m/s*
• Propagation speed of longitudinal ultrasonic wave (saturated)  264 m/s*
• Bending strength – breakdown strength (dry)  103,10 kgf/cm² **
• Bending strength – Breakdown strength (saturated) 74,30 kgf/cm² **
• Propagation speed of longitudinal ultrasonic wave (dry)  5.547 m/s**
• Propagation speed of longitudinal ultrasonic wave (saturated) m/s 6.029 kgf/cm²**
• Bending strength – Breaking strength (dry) 79,53 kgf/cm²***
• Bending strength – Breaking strength (saturated) 77,77 kgf/cm²***
• Bending strength – Breaking strength (dry)  72,49 kgf/cm²****
• Bending strength – Breaking strength (saturated)  64,16 kgf/cm²****
• Uniaxial compression – Breaking strength (dry) 1.217 kgf/cm² (1)
• Uniaxial compression - Breaking strength (saturated) 1.032 kgf/cm² (1)
• Uniaxial compression - Breaking strength (after freezing and thawing))  1.298 kgf/cm² (1)
• Propagation speed of longitudinal ultrasonic wave (dry)  6.214 m/s(1)
• Propagation speed of longitudinal ultrasonic wave (saturated)  5.572 m/s(1)
• Propagation speed of longitudinal ultrasonic wave (freezing/thawing)  5.361 m/s (1)
• Uniaxial compression – Breaking strength (dry)  1.234 kgf/cm² (2)
• Uniaxial compression - Breaking strength (saturated)  1.054 kgf/cm² (2)
• Uniaxial compression - Breaking strength (after freezing and thawing))  1.167 kgf/cm² (2)
• Propagation speed of longitudinal ultrasonic wave (dry)  6.179 m/s (2)