Describir: Layered PGE Paleoproterozoic (LIP) Intrusions in the N-E Part of the Fennoscandian Shield — Isotope Nd-Sr and 3He/4He Data, Summarizing U-Pb Ages (on Baddeleyite and Zircon), Sm-Nd Data (on Rock-Forming and Sulphide Minerals), Duration and Mineralizatio