The Primary Sapphire Occurrence at French Bar Sill Along the Missouri River, Near Helena, Montana

Gems & Gemology 2026 Open access

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Authors: Robert E. Kane, Kory L. Pettman, Aaron C. Palke, Rachelle B. Turnier, Richard B. Berg, Nathan D. Renfro, Christopher P. Smith

DOI: 10.5741/gems.61.4.332

Cited by: 0

Fields of Study & Subjects

Mineralogy and Gemology Studies Geological and Geochemical Analysis Geochemistry and Elemental Analysis