Publisher: Bachudo Science Co. Ltd

Occurrence, Chemical Composition and Industrial Quality of Limestones In Guyuk, North Eastern Nigeria

Eyo E. Nteklm, Dlama K. Zira
KEYWORDS: Cretaceous, Guyuk, Magnesian Limestone, Nigeria.

ABSTRACT:

limestone deposits occur within the Cretaceous shale-limestone stratigraphic units in Guyuk area of nortl1-eastem Nigeria. Geologic investigations reveal three mappable lithofacies namely: <:rystalline iimet-1tone, bioclastic limestone and shelly limestones. These are interlayered with shales and mudstones and, in some places sandstones. Chemical analysis of the limestone AAS and Flame atomic emission techniques reveal a mean compositioJi of Ca0(45.39%), Mg0{2.28%l, Fe203(3.57%1, A'203(2.95%1, SiOzl6.(1%) and [Na20 + K20H0.17%1. Calculated limestone saturation factor (LSfl of ca '171 .53 and hydraulic: modulus of ca 3.4 were obtained. These parameters suggest a moderate purity limestone that is suitable for the manufocture of portland cement. The rich magnesia appropriates to a magnesian limestone deposit.


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