A COMPARISON BETWEEN TERRESTRIAL IMPACT GLASSES AND LUNAR VOLCANIC GLASSES - THE CASE OF FLUORINE

The paper presents fluorine data for several telitites and impactites which surprisingly reveal low fluorine content. A possible connection with lunar volcanic glasses the discussed using models of lunar lava fountaining and volcanic glass production together with the composition of volatile exhalations as derived from thermodynamic calculations and volatile element surface enrichments on green and orange glasses. The remarkable difference between the fluorine content of tektites and lunar volcanic glasses points against a connection between these two classes of natural glasses.