Michael > can any one tell me what this pigment was and if it is still produced. I thought Barium Sulphate (barytes or witherite) was a sort of filler in most paints. If it was the pigment itself then I would reckon it is white. Adrian -- Visit the following sites for references to all kinds of mining subjects British Mining Database http://www.ap.pwp.blueyonder.co.uk/bmd.htm Shropshire Mines Trust http://www.ap.pwp.blueyonder.co.uk/smt.htm Snailbeach Mine http://www.ap.pwp.blueyonder.co.uk/sbeach.htm Tankerville Mine http://www.ap.pwp.blueyonder.co.uk/tanker.htm Bersham Colliery Trust http://www.ap.pwp.blueyonder.co.uk/bct.htm