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.
The rock consists mainly of fine crystalline calcite. Varying quantities of carbon-containing substances are enclosed in the crystalline matrix causing the stepped grey shades. Also some yellow colouring limonite (an iron oxide) in layers is contained in it. Golden shining cords of fine crystalline pyrite can be seen in parallel to the bands- when mirroring the polished surface.
The metamorphosis converted bituminous lime sludge with bands under high pressure and temperature, whereby a crystalline structure was generated. The grey-black bands of the present marble depict the previous sedimentary layer structure.
|Structure Type||Slab with Irregular Pattern|
|Age||570 m. years (Pre-Cambrian)|
|Colouring Minerals||Black by carbon-containing substances imbedded in calcite, yellow stripes by limonite|
|Average Hardness||3 (according to Mohs's hardness scale 1-10)|