Specimen Number33-1-016Alternate Number56-4-62CommentsBiotite-rich carbonatite, XRD reveals that the finer-grained matrix is composed of perovskite + phlogopite + magnetite (see pattern below).In Teaching CollectionNoMineral(s)biotitemagnetiteperovskitephlogopiteRock NamecarbonatiteDistrictPowderhornMineIron Hill, COExternal LinkMindatGeo-LocationWest fork C Gully.Deposit TypeCarbonatiteGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience
33-1-016: carbonatite - Powderhorn District - Iron Hill, CO Mine. Franklin College Collections, accessed 13/11/2026, https://digitalcollections.franklin.uga.edu/nodes/view/53851