Clay veins - Coal, Kentucky Geological Survey, University of KentuckyTypical clay-vein discontinuity. This example is in in the Herrin (W. Ky. No. 11) coal bed in western Kentucky. The vein is 1 to 4 feet wide and can be traced into.normal clay content on coal,KGS--Geological Log Analysis--Clastics and CoalMar 24, 2017 . The log responses match a typical expectation for a shale. .. porosity shows that the Chelsea Sandstone has a significant clay-mineral content.
normal clay content on coal