Morphology and Related Chemistry of Small Lunar Particles from Tranquillity Base

Glass spherules show multiple high-velocity impact craters and are coated with small particles including glass, plagioclase, clinopyroxene, ilmenite, olivine, chromite, rock fragments, and frozen droplets of iron, nickel-iron, and troilite. These spherules passed through an impact cloud of hot fragm...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1970-01, Vol.167 (3918), p.654-656
Main Authors: McKay, David S., Greenwood, William R., Morrison, Donald A.
Format: Article
Language:English
Subjects:
Breccia
Chemical composition
Fine Particles, Glasses, and Shock Effects
Glass
Impact craters
Liquids
Magma
Olivine
Plagioclase
Rocks
Silicates
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Summary:Glass spherules show multiple high-velocity impact craters and are coated with small particles including glass, plagioclase, clinopyroxene, ilmenite, olivine, chromite, rock fragments, and frozen droplets of iron, nickel-iron, and troilite. These spherules passed through an impact cloud of hot fragmental material, condensing iron-rich vapor and high-velocity projectiles. Breccia contains concentric, accretionary lapilli units and appears to be a sintered deposit from a hot lunar base surge generated by impact.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.167.3918.654