Monthly Archives: April 2015

The Stonemason’s Gospel According to Ian Cramb

Lime Explained by Andrew deGruchy (pg. 143) Limestone, the material calcium carbonate, has never changed from its beginning up to and including now. There have always been two classifications, ‘pure’ and ‘impure.’ Today it is classified as pure (high calcium) and two levels of impure lime based on the magnesium content, Dolomitic and Magnesian. What […]