Specimen Number46-2-019Alternate Number49-106-32CommentsStrongly foliated, very fine-grained dumortierite + quartz + muscovite schist. Several thin black layers that contain perfectly euhedral black crystals to 1 mm that need XRD to identify.In Teaching CollectionNoMineral(s)dumortieritequartzmuscoviteRock NameAl-B oreDistrictSacramentoMineChampion, NVExternal LinkMindatDeposit TypeVeinGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience