Northwich of a parish council and is now made up of five main districts of Leftwich, Northwich, Castle, Winnington and Witton. Vale Royal Borough Council was abolished on 1 April 2009, and Northwich now falls within the new unitary authority of Cheshire West and Chester. Between 1885 and 1983 Northwich gave its name to a parliamentary constituency. Northwich was also split between the Tatton and Eddisbury constituencies until the formation of Weaver Vale for the 1997 general election. The seat is currently held by Mike Amesbury (Labour). The town coat of arms features the Latin motto ""Sal est Vita"" meaning ""Salt
Blue John (mineral) Blue John (mineral) Blue John (also known as Derbyshire Spar) is a semi-precious mineral, a form of fluorite with bands of a purple-blue or yellowish colour. In the UK it is found only at Blue John Cavern and Treak Cliff Cavern at Castleton in Derbyshire. During the 19th century, it was mined for its ornamental value, and mining continues on a small scale. Deposits of fluorite have been recently found in China with colouring and banding similar to the classic Blue John stone. The most common explanation for the name is that it derives from the French "bleu-jaune", meaning 'blue-yellow'.