EGT-TWINN project code: 2.5.1.

Official title: The European Green Deal challenging advanced exploration and valorisation methods of critical raw materials

Date: 25. -29. August 2025

Location: Loppi drill-core shed

Person responsible @EGT: Lauri Joosu

Person responsible @GTK: Janne Hokka

Preliminary overview of the action (from the project Grant Agreement):

Action 2.5.1: Critical metals and minerals in Fennoscandia – advanced exploration methods (GTK); A three-day workshop (M33) will introduce the participants to modern data acquisition and integration methods utilised in mineral exploration and ore potential mapping. The course will be led by GTK’s leading experts and based on recent research on the Paleoproterozoic Metsämonttu Zn-Pb-Cu-Ag-Au deposit in southwest Finland. The lectures will be supported by demos and practical exercises from both drill cores and in the field and cover topics such as the use of handheld XRF instruments, hyperspectral scanning, and petrophysical measurements as well as traditional visual logging of the drill core and laboratory sampling. The course will include an introduction to the recognition of volcanic and sedimentary textures in the field and the integration of geochemistry to reconstruct stratigraphy. Methods and software used for data visualisation and interpretation will also be covered.