Figure 3. Histogram of pore data from sample Lott 19 #4, 4944.9’. A photomicrograph of the sample is located at top right. Scalebar = 100 mµ. Size is plotted on the x-axis, frequency on the y-axis, and shape per pore bin is also shown. Pore type is denoted by abbreviation; M = moldic, IM = incomplete moldic, and SEIG = solution enhanced intergranular.