The Attu Carbonatite is an early-stage REE–Sr–Ba exploration target on Uperniviarsuk island, approximately 10 kilometres northeast of Attu village. Reported rock samples contain up to 12.4% TREO, 14.6% SrO and 12.4% BaO, together with primary rare-earth minerals including monazite, daqingshanite and burbankite.
These are individual specimen results and do not represent the average grade of a deposit. The carbonatite dyke is narrow and its size, continuity and internal grade distribution remain unknown. Although its primary mineralogy warrants further investigation, it does not demonstrate simple, economic or environmentally benign processing.
The project remains at grassroots exploration stage, with no drilling, metallurgical test work, Mineral Resource or Mineral Reserve. Mineral tenure also requires confirmation. Detailed mapping, channel sampling, mineralogical analysis and staged exploration are needed to determine whether the occurrence has meaningful scale and continuity.