€17.67€18.03Regular price-2%offPrice
Siliceous Pierre: shale
Slate and phyllite / "ottrelite"
Ardenne, province of Luxembourg
Dominant clay mineral assemblage of ferruginous, siliceous and aluminous minerals
Length 3 m width 2 m thickness 1 m
1 cm - slate 0.2 cm
Gross, cleaved, sawn, honed, polished, carved for the variety of Ottré
Exterior: rubble, angle, head of mould, framing of Bay, shelf, threshold, market, covers-wall, slab, furniture, slate roofing and weatherboarding
Interior: countertop, tile, decoration