This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term. Presumably from a person named Jim Thompson.
- (mineralogy) An inosilicate mineral containing iron and magnesium.
- jimthompsonite Barthelmy, David (accessed 29 August 2016) Webmineral Mineralogy Database
- jimthompsonite mindat.org, Hudson Institute of Mineralogy, accessed 29 August 2016