Black Spider Quartzite

Black Spider Quartzite is an exquisite and rare quartzite known for its dramatic appearance and durability. Quarried in Brazil, this stone is particularly sought after for its aesthetic appeal, which features a pitch-black background accentuated by contrasting veins of white, grey, cream, and brown. Below is a detailed description of its physical and mechanical properties, chemical composition, and various aspects related to its usage and maintenance.

Physical and Mechanical Properties:

• Water Absorption: Typically low, generally < 0.5%
• Density: Approximately 2,660 - 2,740 kg/m³
• Flexural Strength: Ranges between 18 - 22 MPa
• Compressive Strength: Typically 180 - 250 MPa
• Hardness: Measures about 6 - 7 on the Mohs scale
• Porosity: Very low, often < 1%
• Slip Resistance: High slip resistance, especially when honed or textured

Chemical and Mineral Composition (% by weight):

• Silica (SiO₂): ~90-95%
• Alumina (Al₂O₃): ~1-3%
• Iron Oxides (FeO, Fe₂O₃): ~1-2%
• Other Minerals: Including mica, feldspar, and trace minerals forming the veins

Usage and Applications:

Black Spider Quartzite is versatile and can be employed in a variety of settings:

Interior Applications:

• Kitchen Countertops
• Backsplashes
• Bathroom Vanities
• Fireplace Surrounds

Exterior Applications:

• Facade Cladding
• Outdoor Kitchens
• Pool Coping

Commercial Spaces:

• Restaurant Tabletops
• Bar Tops
• Feature Walls

Maintenance:

• Routine Cleaning: Use a mild, pH-neutral cleaner and soft cloth or sponge.
• Sealing: Recommended regularly due to its natural porosity, typically once every 6-12 months.
• Stain Removal: For stubborn stains, a poultice can be applied.

Surface Finish Options:

• Polished: Offers a glossy, reflective surface that enhances the black background's elegance.
• Honed: Provides a smooth, flat sheen that is less reflective, ideal for a more understated look.
• Leathered: Gives a textured finish, adding depth and tactile appeal.
• Bush-Hammered: A heavily textured surface suitable for outdoor applications due to added slip resistance.

Cutting and Edge Finishes:

• Straight Edge
• Bullnose Edge
• Bevel Edge
• Ogee Edge

Given its luxurious appeal and robust physical properties, Black Spider Quartzite is an excellent choice for those seeking a stunning, durable natural stone for both residential and commercial projects. Proper maintenance ensures its beauty and functionality for years to come.