Geological classification:
  Sandstone, greyish-white, fine-
  grained
Bulk specific gravity ASTM C 97-94:
  2.2 kg/dm³
Absorption ASTM C 97-94:
  7.10%
Compressive strength ASTM C 170:
  73 N/mm²
Modulus of rupture ASTM C 99:
  5.0 N/mm²
Freeze-thaw cyclic test DIN 52104:
  yes