8/5/68 6-7- Red Bed Transition Zone. On NW side of BAVINE Bleached BIOTITE 9 CARB Prob never iron Plenty of oxidizable Iron in DRAB as witnessed by limonite staining, MUCH CARB. MATTER. On DRAB Side. Sandstones with much Clay Matrix probably Altered in place Bronzy BIOTITE Sands seem more altered here than on Red side. 1 from each fac 1. CLAY MIN ANALYSIS sh from red All drab 2 BULK X RAY ANALYSIS of Sands. 3 Sep CLAYS from SAND fract 4 Analyze those 4 Reduce red color from red shales to find stab of pigment. ala Proc Vol 7th NATL Confon Clays Mehrer M.H. Jackson Proc for removing iron