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Quartzites

Negresco

Explore the beauty of Negresco Quartzite, an elegant black volcanic stone with white veins, the result of minerals such as Plagioclase, Magnetite and Quartz. Widely used in architectural and interior design projects, especially in kitchens and bathrooms, providing an atmosphere of refinement and sophistication.

Finishes

Brushed

Applications

Indoor Flooring

Internal Walls

Kitchen Countertops

Table Tops

Bathrooms

Stairs

Panels

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Category

Quartzites

Petrographic Analysis

Basalto Plagioclásios (83%), Magnetita (6%), Hornblenda (4%), Calcopirita (3%), Pirita (2%), Titanita (2%), Clorita, Calcita e Epidoto (Secundários), Quartzo (traço)

Bulk Density

2803

Apparent Porosity

0.33

Absorption By Weight

0.12

Rupture Modulus

18.06

Compressive Strength

96.05

Petrographic Analysis

It consists of classifying the rock through the macroscopic and microscopic description of its characteristics, such as minerological composition, alteration, deformation and microcracking pattern.

Apparently density

Relationship between the mass and apparent volume of the rock. It provides the weight of the rock, being an important parameter for calculating loads in buildings.

Apparent porosity

It is the relationship between the volume of voids and the total volume of the rock expressed as a percentage.

Water absorption

It is the ability to assimilate or incorporate water into the rock, expressed as a percentage.

Abrasion resistance

Determines the wear rate due to friction of particles with the surface of a rock plate.

Bending resistance

Simulates flexural efforts in rock pacas, with predetermined thickness, in this case simulating the effect of wind on plates fixed to facades with metal anchors.