Detail Whole Slab
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Brazilian Slate

The close-up view of each stone type shows a relatively true image of the crystalline structure and the colouring. This is suitable for grained slabs to a limited extend only. In regard to the colour matching, please take an original sample of the stone from your furniture store as a basis.


This rock has an extremely fine grain and is a homogenous rock regarding colour. Also under the microscope can no single minerals be identified due to its minimal grain size. The constant and also the unusual evenness of the natural splitting face, which has not been machined any further is of interest to be used as decorative rock. 


Clay slate of this kind is clay-containing deposit, mostly deposited in sea basins far away from the coast, which has been compacted under relatively low pressure.

Hardness Soft Stone
Structure Type Homogeneous Structure
Synonyms Mustang, Black Panther, Ardosia Bambui
Group Sediment rock
Petrographic Assignment Clay slate
Age 600 million years (Algonkian)
Colouring Minerals Small amounts of carbon
Average Hardness 3 (according to Mohs's hardness scale 1-10) / Soft stone
Deposit near Belo Horizonte / Mias Gerais / Brazil