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Matrix

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.

Petrography

The attractive rock consists mainly of a mixture of dark-grey sparkling biotite mica sand transparent quartz. This appears in different concentration and is enriched where the sparkling effect is only weak. Mica slate of this type is very popular as it stands out due to the unusual reflection appearances! 

Petrogenesis

Mica slate was originally clay-sand sediment rock, namely sandy clay! The effect of high pressure and temperature over millions of years shows especially in such original materials! The clay minerals were "upgraded? to intensively sparkling mica and give the new generated rock an attractive appearance.

Hardness Hard Stone
Structure Type Homogeneous Structure
Synonyms Silver Shadow, Anden Phyllit, Cosmic Black, Silver Phyllit, Black Graphite
Group Metamorphite
Petrographic Assignment Mica slate (gneiss)
Age 570 million years (Pre-Cambrian)
Colouring Minerals Dark-grey sparkling: Biotite-mica
Average Hardness Approximately 7 (according to Mohs's hardness scale 1-10)
Deposit Itaobim / Federal State Minas Gerais / Brazil