Hand speciments collected for investigating the fracture patterns in crystalline rocks (Rapakivi granites). Samples are spatially associated with faults, while most fractures are healed fractures, with a limited amount of open fractures present. Locations: Loviisa (Orrengrund) and Åland Islands. Same samples were also imaged with grinding tomography. Some of the data is included in: Jokiniemi, J, 2021, 3D-modelling of fault-induced small-scale secondary fracturing in crystalline rocks. Pro gradu thesis. https://urn.fi/URN:NBN:fi-fe2021080642375 . Preview dataset found at https://doi.org/10.23729/7a29aa89-59d5-4093-90ed-73e0e6147519 . To obtain data, please contact fairdata-pas@gtk.fi .

2021