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Quartzites

Perla Grey

This quartzite tells the story recorded by nature some 1.4 billion years ago. Unique colors of dumortierite and muscovite capture the remote landscapes of Espinhaço Mountain Range. In an arid scenario, geological processes removed and accumulated quartz grains. Climate changes raised the sea, molding sand deposits. The waves movement immortalized smooth layers in the sandstone. In this pressure and temperature cycle, the metamorphism registered the Perla Grey geology.

Finishes

Polished

Brushed

Honed

Applications

Indoor Flooring

Outdoor Flooring

Internal Walls

External Walls

Kitchen Countertops

Table Tops

Bathrooms

External Fireplace Coating

Stairs

Panels

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Category

Quartzites

Petrographic Analysis

Quartzito Quartzo (86%), Muscovita (5%), Feldspato (5%), Dumortierita (2%), Turmalina (1%), Rutilo (<1%), Zircão (<1%), Minerais Opacos (<1%)

Bulk Density

2677

Apparent Porosity

0.50

Absorption By Weight

0.19

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.