Specimen Number38-7-036Alternate Number81-1-Jer-3CommentsSilicified rhyolite porphyry, Cleopatra member of Deception rhyolite.In Teaching CollectionNoMineral(s)quartzfeldsparsericiteRock Namealtered rhyoliteDistrictVerdeMineregional sampleDeposit TypeVMSDonated ByUniversity of Wisconsin-Madison Department of Geoscience