Keliber discovered the previously unknown Outovesi deposit in its regional exploration programme 2010.
Similar to other deposits in the area, the pegmatite in the Outovesi deposit is uniform albite-spodumene pegmatite. The maximum thickness of the vein is 10 metres. Smaller and thinner veins spodumene pegmatite do not occur in Outovesi. The length of the deposit is 300 metres.
The host rock is primarily uniform mica schist, although some levels of graphitic schist, metagreywacke and skarn also occur.
The ore reserve estimates have been prepared according to the guidelines of the JORC Code 2012 by Pöyry Finland Oy by competent persons under the supervision of Ville-Matti Seppä MSc (Geology), EurGeol acting as the qualified person. The mineral resource estimates for Outovesi have been prepared by Markku Meriläinen (MAusIMM) and Pekka Loven (MAusIMM). Estimates have been prepared and reported in accordance with the guidelines of the Australasian Code for the Reporting of Mineral Resources and Ore Reserves (JORC Code 2012).