Rocaber S.A.U.
Anllares del Sil (León)

The slate belongs geologically to the "Dominio de Navia - Alto Sil of Pizarras de Luarca " (Mid-Ordovician). It also presents a sub vertical schistity from the first Hercinic phase.

It is a grey slate that comes in two variations: Dark-Grey slate of light-medium grain and the Plain Grey with a bigger grain. Both slates are very resistant.

Its main minerals are sericite, quartz and chlorite, and some quantity of rutile.

The slate is worked in pieces for roof finished with a natural cut. The sizes range from 22 x 16 cm to 60 x 40 cm. Its thickness can be 4 - 5 mm; to 8 mm. It is marketed by ROCABER has as RF-50.

Thanks to physical-chemical characteristics of this slate is very indicated as material for roofing.