Between 2.8 and 2.5 billion years ago, the first life-forms on Earth began to develop at sea and transform the conditions of the atmosphere. Oxygen, which was previously unavailable, came to be supplied by cyanobacteria through photosynthesis. 

This oxygen newly arrived on the planet reacted with the large amounts of iron present in the seawater, which were released by the intense activity of existing underwater volcanoes. The iron oxide formed went to the ocean floor, giving rise to layers rich in iron. When the amount of oxygen or iron available decreased, these reactions ceased, and layers of silica were deposited with iron oxides. 

The repetition of this cycle gives rise to what we see today in the beautiful slabs of the Bronzite. Even after its formation, Bronzite went through several geological events, following the entire evolution of the Earth as we know it today. The iron minerals and quartz layers present in the Bronzite are responsible for their high hardness and reddish colors, often vivid and bright.

Bronzite Quartzite is the natural proof of one of the most important landmarks in the history of our planet.

Bronzite quartzite has a wide spectrum of applications due to its low absorption and quartz-rich composition, which confers high hardness.

INTERNAL FLOORS

INTERNAL WALLS

FACADES

KITCHEN COUNTERTOPS

TABLETOPS

BATHROOM S

EXTERNAL FIREPLACE CLADDING

POLISHED

BRUSHED

FLAMED

SLATTED

The technological characterization corresponds to a set of tests that determine the properties of rocks in laboratory environment. They are fundamental to establish the technological parameters of the materials to indicate their application possibilities for different projects.

PETROGRAPHIC ANALYSIS
ABNT NBR 15845-1

It consists of the classification of the rock by means of the macroscopic and microscopic description of its characteristics such as mineralogical composition, alteration, deformation and microcracking pattern.

BULK DENSITY (kg/m³)
ABNT NBR 15845-2

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

WATER ABSORPTION (%)
ABNT NBR

15845-2 It is the capacity of assimilation or incorporation of water by the rock, expressed in percentage.

APPARENT POROSITY (%)
ABNT NBR

15845-2 It is the relationship between the volume of voids and the total volume of the rock expressed in percentage.

COMPRESSIVE STRENGTH (MPa)
ABNT NBR 15845-5

It is the tension that causes the rock to break when subjected to compressive stresses.

ABRASION RESISTANCE
(Hardness index) ASTM C241

Determines the wear index caused by friction of particles with the surface of a rock plate.

FLEXURAL STRENGTH (MPa)
ABNT NBR 15845-7

Determines the rupture by bending efforts in rock plates with commercial thickness, simulating the effect of the wind in plates fixed in facades with metallic anchors.

STAIN RESISTANCE
ABNT NBR ISO 10545-14

It establishes, from the aesthetic point of view, the depletory action of selected staining agents of daily domestic and/or commercial use, when accidentally in contact with the rock.

Bronzite quartzite is a 100% natural stone. Its properties reflect the conditions of the formation environment of millions of years ago. A successful specification depends on the knowledge of these properties combined with the performance that the application environment will require.

PETROGRAPHIC ANALYSIS
ABNT NBR 15845-1
Ferriferous Banded Formation

Microcrystalline and Crystalline Quartz (55 %), Magnetite (15 %), Goethite (15 %) Hematite (12 %) and Grunerite (3 %).

BULK DENSITY (kg/m³)
ABNT NBR 15845-2

3 2 8 7

WATER ABSORPTION ( % )
ABNT NBR 15845-2

0 , 1 4

APPARENT POROSITY (%)
ABNT NBR 15845-2

0 , 4 4

WATER ABSORPTION ( % )
ABNT NBR 15845-5

2 2 9 , 4 3

ABRASION RESISTANCE
(Hardness index) ASTM C241

1 4 9 , 4 9

FLEXURAL STRENGTH (MPa)
ABNT NBR 15845-7

4 5 , 7 0

STAIN RESISTANCE
ABNT NBR ISO 10545-14

HIGH

To maintain the liveliness and conservation of your natural stone it is necessary that some care be taken periodically to provide a useful life to its coating.

We recommend the following basic precautions:

PERIODIC APPLICATION OF IMPREGNATING SEALERS

Once every 12 months.

DAILY CLEANING

Only neutral or specific detergents for natural stones. Akemi's Basic Cleaner and Bellinzoni's Lem 3 are recommended.

ACCIDENT CONTACT WITH STAINING SUBSTANCES

Never leave staining substances for long periods on the surface of the stone. Absorb immediately with paper towels and clean the area with water and neutral detergent.

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