Abstract
Muscovite-biotite granite of Pan-African age outcrops at Jabal AI Hasawnah, west central Libya. Preliminary chemical data indicates that the suite has a peraluminous chemistry and high Rb, Y, and Nb trace elements. The corundum normative nature of the granite, the chemistry, and field observations suggest that it was formed by partial melting of pelitic sediments (S-type), probably in a "within plate" tectonic environment.