Chemical and mineralogical composition of mortars and plasters from Church of St. Margaret of Antioch in Kopčany

The aim of work was analysis of the historical mortars from the 9th century. This unique specimens with exceptional durability were provided by restorer during the renovation of the church. Small amounts of samples allowed to perform only the microscopic analysis, which results in the characterization of aggregates and mortar binder. The composition of the mortars is changing as binder shown of aerial, dolomitic and hydraulic lime.