Geothermal resources are sui generis, being neither a mineral resource nor a water resource, but they are closely related to and possibly affecting and affected by water resources in many instances.
Mont. Code Ann. § 77-4-104
Nature of geothermal resources
En. 81-2602 by Sec. 2, Ch. 111, L. 1974; R.C.M. 1947, 81-2602(part).
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.