|Rock solid: a piece of the Blue John from Treak Cliff Cavern Dave Dunford/Creative Commons|
A vein of a legendary semi-precious mineral was discovered in Derbyshire, England, about 150 years after the last discovery.
The first new vein of the rare mineral Blue John to be discovered in 150 years has been found by accident. The mineral, also known as Derbyshire spar, was found in the Peak District by miner Gary Ridley while he was testing a new stone chainsaw.
Blue John, named after its distinctive colour, was the height of fashion in Regency times and graced the tables of Buckingham Palace and Chatsworth House. But it is only found in one place on earth – beneath Treak Cliff Hill near the village of Castleton, Derbyshire. And the last vein found was in the 19th century.
The new find, dubbed Ridley Vein after its discoverer, emerged at the Treak Cliff Cavern tourist attraction. “It was only because we were trying out a new method of mining using a stone chainsaw that we discovered it,” said Mr Ridley. “I decided to try the new saw in an area of the cavern we’ve never dug before ... just off the tourist route. I couldn’t believe my eyes when, within a few minutes, I had uncovered a substantial deposit.”
In 2013, miners rediscovered a “lost vein” of Blue John after more than 70 years.
|Vein of Blue John in Treak Cliff Cavern|
She said: “We have made some amazing discoveries in Treak Cliff Cavern over the years, but this is a major new chapter in the story of Blue John stone.”