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
![](http://decolores.dev.duoapp.com.br/media/805/2-escovado.png)
Brushed
Applications
![](https://decolores.dev.duoapp.com.br/img/bg-texture.png)
Quartzites
Basalto Plagioclásios (83%), Magnetita (6%), Hornblenda (4%), Calcopirita (3%), Pirita (2%), Titanita (2%), Clorita, Calcita e Epidoto (Secundários), Quartzo (traço)
2803
0.33
0.12
18.06
96.05
![Petrographic Analysis](http://decolores.dev.duoapp.com.br/media/853/1-analise-petrografica.png)
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](http://decolores.dev.duoapp.com.br/media/857/1-densidade-aparente.png)
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](http://decolores.dev.duoapp.com.br/media/858/1-porosidade-aparente.png)
Apparent porosity
It is the relationship between the volume of voids and the total volume of the rock expressed as a percentage.
![Water absorption](http://decolores.dev.duoapp.com.br/media/859/1-absorcao-dagua.png)
Water absorption
It is the ability to assimilate or incorporate water into the rock, expressed as a percentage.
![Abrasion resistance](http://decolores.dev.duoapp.com.br/media/860/1-resistencia-a-abrasao.png)
Abrasion resistance
Determines the wear rate due to friction of particles with the surface of a rock plate.
![Bending resistance](http://decolores.dev.duoapp.com.br/media/861/1-resistencia-a-flexao.png)
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.
![Compressive strength](http://decolores.dev.duoapp.com.br/media/862/1-resistencia-a-compressao.png)
Compressive strength
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![Stain resistance](http://decolores.dev.duoapp.com.br/media/863/1-resistencia-ao-manchamento.png)
Stain resistance
Stress that causes rock to rupture when subjected to compressive stress.
Inspirations
Environments
The exclusive world of natural stones for subtle and elegant environments.
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