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Speranza Quartzite

Green - Quartzite

Brazil

About

Item Details

Material Type:
Quartzite
Origin:
Brazil (Quixaba Mine, Pio Ix City, Piaui State)
Primary Color(s):
Green
Recommended Usage:
Kitchen and bathroom countertops, wash basins, building stone, ornamental stone, stairs, interior, exterior wall and floor applications, mosaic, waterjet pattern, wall panels, table tops, balustrades, columns, wall and pool copings, pool pavers, sculptures, fireplaces
Additional Names:
Verde Speranza Quartzite, Verde Speranza Granite, Green Speranza Quartzite, Verde Speranza Serpentinite, Speranza Granite, Speranza Quartzite
Finished Surface:
Polished,Bush Hammered,Tumbled,Brushed,Honed,Split,Machine Cut,Natural Surface,Sandblasted,Combed,Leathered,Water Jet,Filled,Chiseled,Pickling

Testing

Water Absorption:
0.09 %
Density:
2899 kg/m³
Flexural Strength:
10.31 MPa
Compressive Strength:
121.7 MPa
Stone texture:
features a dark green background with yellow-green veins, accented by white veins and markings, along with soft light to dark hues that add depth and character

Description

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)

FAQ

Can Brazil's Speranza Granite be used exterior applications in cold climates?

Yes, Brazils Speranza Granite can be used for exterior applications in cold climates. Speranza Granite is known for its durability and resistance to weathering, making it suitable for various outdoor applications, including countertops, cladding, and paving. It can withstand freezing temperatures, as well as the expansion and contraction that occur during temperature fluctuations, making it a reliable choice for cold climate environments. However, its always recommended to consult with professionals or suppliers familiar with the specific conditions and requirements of your project to ensure the best outcome.

Can Brazil's Speranza Granite be used in wall coverings?

Yes, Brazils Speranza Granite can be used in wall coverings. Granite is a versatile and durable material, making it suitable for a variety of applications, including wall coverings. Speranza Granites unique pattern and color variations can add a stunning and luxurious look to any wall surface, whether its in residential or commercial settings.

Can Brazil's Speranza Granite be used in a office?

Yes, Brazils Speranza Granite can certainly be used in an office setting. Speranza Granite is known for its beautiful combination of ivory, white, and beige colors with dark veins, creating a sophisticated and elegant look. It can be used for office countertops, tabletops, reception desks, or any other surface where durability and aesthetic appeal are desirable. Its natural strength and resistance to heat, scratches, and stains make it a practical choice for office use.

What is the coefficient of friction of Filled Brazil's Speranza Granite tiles?

The coefficient of friction of Filled Brazils Speranza Granite tiles can vary depending on factors such as surface conditions and finish. However, a general range for the coefficient of friction of granite tiles is 0.60 to 0.90. It is recommended to consult with the manufacturer or supplier of the specific tiles for the most accurate and up-to-date information on the coefficient of friction.

What grade is Brazil's Speranza Granite?

I do not have information on the educational grading system for granite in Brazil. However, Speranza Granite is a popular natural stone that is known for its durability and aesthetic appeal. It is commonly used for countertops, floors, and walls in residential and commercial spaces.

Can Brazil's Speranza Granite be used outdoors?

Yes, Brazils Speranza Granite can be used outdoors as it is a durable and strong natural stone that can withstand harsh weather conditions such as rain, snow, and direct sunlight. It is also resistant to scratches, stains, and heat, making it an ideal material for outdoor applications such as flooring, countertops, walls, and decorative features. However, it is recommended to seal the stone annually to maintain its appearance and protect it from damage.

How thick is Brazil's Speranza Granite slabs?

I do not have access to up-to-date information on Brazils Speranza Granite slab thickness. However, granite slabs are typically offered in various thicknesses such as 2 centimeters (cm) and 3 cm, with the most common being 3-cm thick slabs. Its also possible that other thickness options may be available for Brazils Speranza granite.

Are there color variations of Brazil's Speranza Granite?

Yes, there are color variations of Brazils Speranza Granite. The stone features a black background with golden and beige veins and speckles. The golden and beige veins can appear in different patterns and densities, resulting in unique color variations. However, the overall color scheme remains consistent, featuring a gold and black contrast.

Is Brazil's Speranza Granite an expensive stone?

I do not have access to the current market prices of stones. However, Speranza Granite is considered a rare and exotic stone, and rare stones tend to be more expensive than more common ones. The price of Speranza Granite will depend on factors such as location, supplier, quality, and availability. It is recommended to obtain a quote from a reputable stone supplier for the current market price of Speranza Granite.

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