Specimen Number46-1-024Alternate Number48-3-1CommentsSilicified rhyolite with accessory muscovite and abundant crosscutting veins/veinlets of fibrous red dumortierite. Dumortierite confirmed by XRD, see pattern below.In Teaching CollectionNoMineral(s)quartzdumortieritemuscoviteRock NameAl-B oreDistrictRochesterMineLincoln HillExternal LinkMindatDeposit TypeVeinGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience