mineral lode.A mineral bed of rock with definite boundaries in a general mass of a mountain;
any belt of mineralized rock lying within boundaries that clearly separate it from neighboring rock.
— Also termed lode.
“Typically, a lode is a concentration of valuable mineral with boundaries sufficiently distinct to import such a definite trend, continuity, and apartness to the formation that it can be traced through the enclosing mass of rock.” 1 American Law of Mining § 32.02(2), at 32-7 (2d ed. 1998).
[Blacks Law 8th]