VLS (Vapor-Liquid-Solid): Newly Discovered Growth Mechanism on the Lunar Surface?

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Science  31 Aug 1973:
Vol. 181, Issue 4102, pp. 841-842
DOI: 10.1126/science.181.4102.841


A probable vapor-liquid-solid (VLS) type of growth has been discovered for the first time in nature on the surface of lunar rock 15015. Scanning electron microprobe and energy dispersive x-ray data indicate that the growth occurs as metallic iron stalks from about 0.015 to 0.15 micrometer in diameter, with bulbous tips consisting of a mixture of iron and sulfur and measuring from about 0.03 to 0.2 micrometer in diameter. The stalk length is two to ten times the bulb diameter.

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