This report is intended as a general reference document on Yukon’s critical mineral endowment and potential. It provides some background on critical minerals, and for clarity it includes a number of definitions, as the terms used to describe these commodities are somewhat fluid. The document also provides a snapshot of Canada’s (and Yukon’s) position as a supplier of critical minerals and highlights potential opportunities for Yukon. The bulk of the report, presented in Part 2, consists of a series of critical mineral data sheets, describing each of the critical minerals that are on Canada’s list. The data sheets provide some basic facts about each commodity, as well as information on Yukon’s endowment of each critical mineral.