The scientific study of minerals; their formation, occurrence, chemical composition, physical properties, and their classification. Oryctognosy and oryctology are obsolete terms.
See Alexandrite Tsarstone collectors guide, Definition of Mineralogy, http://w.alexandrite.com/viewpage.html?id=GG-098-00006 (The scientific study of minerals; their formation, occurrence, chemical composition, physical properties, and their classification. Oryctognosy and oryctology are obsolete terms.) (as of Jul. 19, 2026, 04:35 GMT).