Index No: NBM052480; Collected By: ; Sample Type: hand sample; Notes: Rock chip sample from N wall of cut about 1m deep, 5m long in altered Tma. Veins of chalcedonic silica and veins of hydrothermal breccia with silica cut argillically altered densely welded devitrified Tma; overlying Tma is leached. Abundant silica and hydrothermal breccia veins in medium gray, less leached Tma nearby. Prospect pit exposes brightly red-orange iron oxide-stained rock with veins.