Specimen Number32-10-025Alternate Number56-4-27CommentsContact between carbonate vein and pyroxene-bearing ijolite. XRD confirms nepheline + apatite + dolomite (see pattern below).In Teaching CollectionNoMineral(s)nephelinepyroxenedolomitepyriteapatiteRock NameijoliteDistrictPowderhornMineIron Hill, COExternal LinkMIndatGeo-LocationWNW of Beaver Creek - location uncertain.Deposit TypeCarbonatiteGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience
32-10-025: ijolite - Powderhorn District - Iron Hill, CO Mine. Franklin College Collections, accessed 06/11/2025, https://digitalcollections.franklin.uga.edu/nodes/view/53810