Specimen Number45-5-021Alternate Number49-37-I5CommentsSillimanite-bearing pegmatite, quartz + magnetite + feldspar rich, some sillimanite is fibrolitic. From hanging wall to ore.In Teaching CollectionNoMineral(s)quartzfeldsparmagnetitesillimaniteRock NamegangueDistrictAdirondacksMineBensonExternal LinkMIndatDeposit TypeMetamorphosed BIFGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience