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Visit Loppi – Open Doors Event at the Geological Sample Archive on 11 September

Date: 11.09.2025Location: GTK Geological Sample Archive, Mustinsuontie 159, Loppi
Black-and-white archive photo of a building and cars combined with a colour photo of drill cores.
Research facilities at the Loppi Geological Sample Archive in the 1970s. Drill cores shown in colour photo

GTK has been operating in Loppi for over 50 years, and to mark this milestone we are hosting a special Open Doors event at the Geological Sample Archive.

Date and time: Thursday, 11 September, 16.00-18.00
Location: Mustinsuontie 159, Loppi

Event Highlights

  • Explore one of the world’s largest drill core archives.
  • See how rocks and minerals are identified using research instruments.
  • Discover Finland’s diverse rock types – including the rare orbicular rocks, protected as one of the very few rock types worldwide.

You’re warmly welcome to Loppi!

Additional information: events@gtk.fi

Did You Know?

Across decades, the Geological Sample Archive has steadily grown, now containing over 4 million metres of drill core samples from the Finnish bedrock.