Request stone sample Description of natural stone

Roter Mainsandstein, Röttbach

red sandstone

honed

The “Roter Mainsandstein, Röttbach” is particularly valued for its uses in natural stonework thanks to its proven, frost-resistant quality and its distinctive colour and texture. Its monochrome red colour gives buildings or façades a stunning appearance. Numerous historical and modern buildings bear witness to this. It is a popular choice for interior and exterior applications owing to its good physical and technical properties. Its tested and certified resistance to weathering is another major plus.

The Röttbach quarry has been in operation for several centuries and is one of the most productive quarries for monochrome-red, fine-grained sandstone in Germany today.

Regional “Roter Mainsandstein” from Röttbach is a highly sustainable building material.

SURFACE FINISHES

honed

pneumatically-chiselled

machine-chiselled

hand-chiselled

point-chiselled

shot-blasted

machine split

Lines split 7 mm

Lines split 30 mm

Specifications

Further trading names

Roter Mainsandstein, Mainsandstein rot, Röttbacher Mainsandstein

Petrographic classification

Sandstone

Description

Red, fine-grained sandstone from the Upper Buntsandstein formation near Röttbach/Lower Franconia (Germany).

Mineralogical composition

Quartz (ca. 70%), quarzite (ca. 4%), biotite and muscovite (ca. 4%), alkalifeldspar (ca. 7%), iron mineral (ca. 2%), rock fragments (ca. 12%), accessory minerals (ca. 1%)

Structure

Red to red-violet, fine-grained sandstone, sediment layers with muscovite mica flakes, finely pored, with a uniformly-graded texture. Occasional small pores and dark-red or whitish inclusions.

Petrographic identification:

Red sandstone with rock fragments and ferritic, siliceous cementation.

Grain colours

Quartz:	pale-red
Cement:	pale-red
Accessory minerals:	grey-black

Additional information

Request stone sample
Description of natural stone

Proof and confirmation of suitability by EC declaration of conformity, as well as CE marking available. We will be happy to provide you project related with references, test reports and further information.

The displayed stone samples illustrate the kind of material extracted from the quarry in question. As a natural material, stone is subject to variations in colour, texture and grain structure. It can also have natural inclusions, markings or veining. A typical stone patina may develop due to material-related or environmental influences.