Cawk, a popular name for a massive variety of the mineral called Heavy Spar or Sulphate of Baryta. See BARYTA.
Cawk
Chambers's Encyclopaedia, Volume 3: Catarrh to Dion, p. 38
Source scan(s): p. 0047
Cawk, a popular name for a massive variety of the mineral called Heavy Spar or Sulphate of Baryta. See BARYTA.