Specimen Number36-4-030Alternate Number52-33-6CommentsBanded gneiss.In Teaching CollectionNoMineral(s)quartzfeldsparbiotiteRock NamegneissDistrictIdaho SpringsExternal LinkMindatGeo-LocationSpecific mine within district unknown.Deposit TypeVeinDonated ByUniversity of Wisconsin-Madison Department of Geoscience
36-4-030: gneiss - Idaho Springs District - Unknown Mine. Franklin College Collections, accessed 09/11/2025, https://digitalcollections.franklin.uga.edu/nodes/view/55008