Analyses of High-Calcium Chert-Free Beds in the Keokuk Limestone, Cherokee County, Kansas

Abstract

Chemical and physical examination of the chert-free portions of the Keokuk Limestone (Mississippian) in Cherokee County, Kansas, showed it to be a high purity (mean 98.31% CaCO₃), low silica (mean 0.24%), low iron (mean 0.12%) limestone of commercial quality. It is estimated that about 1 1/4 million tons of the high-calcium limestone are present. Analyses of the limestone are included. Loss on ignition rate was shown to increase when the samples were calcined under a nitrogen atmosphere.