Halloysite Mine in Dunino, Surface mine in Dunino, Poland

The Halloysite Mine in Dunino is an open-pit mine in a narrow valley of the Nysa Szalona river, near its confluence with the Kaczawa. It extracts a halloysite deposit formed by chemical weathering of basalts and basaltic breccias during the Neogene. The deposit is uniform in composition and contains mainly halloysite nanotubes (HNT) and nanoplatelets (HNP).

Open-pit extraction of halloysite at Dunino began in 1998. The deposit itself is a weathering cover: chemical weathering of basalts and basaltic breccias during the Neogene produced the clay, estimated at more than 10 million tonnes. The ore is uniform in composition and carries mainly halloysite nanotubes and nanoplates.

The mine lies in the Land of Extinct Volcanoes Geopark, which covers the Kaczawa Foothills around the former volcanic centres. Halloysite from Dunino occurs as nanotubes (HNT) and nanoplates (HNP), and the deposit is uniform in composition. The site is the only halloysite mine in Poland.

The site is located near Legnica city and operates under restricted access policies, though viewing points nearby allow distant observation of the extraction work. Visitors interested in geology can plan a trip to the geopark in this region.

The Dunino deposit is a weathering cover formed by chemical weathering of basalts and basaltic breccias during the Neogene, and it is uniform in composition. It contains mainly halloysite nanotubes (HNT) and nanoplatelets (HNP), with resources estimated at over 10 million tonnes.