Lunar glass: interferometric evidence for low-temperature shock.

Glass objects in the fines from the Apollo 11 and Apollo 12 missions are shown, by two-beam reflection interferometry, to have been subject to shock at temperatures below the melting or softening point of the glass. Possible causes for the glass fragmentation are discussed.

lnterferometric Examination of Small (Glassy Spherules and Related Objects in a 5-Graml Lunar Dust Sample.

Over two hundred spherules and cylinders were extracted from the lunar dust sample. Sizes ranged from 0.7 to 0.

Abundance of Type II Diamonds.

More than 1300 natural microdiamonds, mostly averaging 0.0015 carat, were studied for transparency to ultraviolet radiation, lambda2537. Of most of them, of this size, 16 percent were completely transparent (presumably type II); 27 percent, completely absorbent (presumably type I).