Water and carbon in rusty lunar rock 66095

The reported study of the lunar rock 66095 included the determination of hydrogen, carbon, and oxygen isotope ratios. One group of experiments with rock 66095 and meteoritic rust involved the examination of the O-18 content of the oxygen in the ferric oxide found on the rock and the determination of the O-18 content in the oxygen of the adsorbed or hydration water. It is suggested that the enrichment of the rock 66095 in volatile materials is caused by volcanic or fumarolic activity. Water released by such activity may be juvenile lunar water.