Specimen Number46-5-013Alternate Number56-61-2CommentsReddish felsic layered tuff with minor Mn-oxide.In Teaching CollectionNoMineral(s)hematitequartzmn-oxideRock Namemineralized rhyolite tuffDistrictMexicoMineSan Francisco, MexicoExternal LinkMindatDeposit TypeVeinGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience