Index No: NBM055730; Collected By: ; Sample Type: hand sample (missing); Notes: Rock chip samples for thin sections only, not for geochem. Alteration suite for Clarkdale-Yellow Gold area. 5573A - flow-banded Tyr with sparse quartz phenocrysts, from top and N margins. 5573B - kaolinite-alunite(?)-quartz/opal(?) altered porous Tgu with rounded cobbles and pebbles of dark chert, light quartzite, etc. from 2-3m below base of overlying Tyrt = top of alteration, about 10-15 m section of unwelded, phenocryst-poor highly opalized altered Tyrt between top of Tgu and base of Ttp/Tss