Shist

Autres appellations / variétés

Slate schist or phyllite/'ottrelite’.

Zone d'extraction

The Ardennes region, Luxembourg province.

Composition minéralogique

Mixture of primarily clay minerals, but also siliceous, ferruginous and aluminous minerals.

Dimensions maximale des éléments bruts

Length 3 m; Width 2 m; Thickness 1 m

Epaisseur minimale d'application

1 cm; roofing slate 0.2 cm

Etats de surface

Rough, split, sawn, honed, polished, cut (Ottré stone).

Applications courantes extérieures

rubble stone, corner stones, voussoirs, window frames, window sills, sills, steps, wall copings, paving, furniture, slate roofing and cladding.

Applications courantes intérieures

worktops, tiles, decoration.