The properties of four igneous rocks (a tholeiitic and an alkali-olivine basalt, an andesite, and a rhyolite) and a synthetic lunar sample have been determined at atmospheric pressure over a range of temperatures including their melting interval. Viscosity, density, electrical and thermal conductivity, ultrasonic wave velocities, surface tension, and vesiculation rates were measured directly; these data have been used to calculate values for thermal expansion, compressibility, ultrasonic wave attenuation, and activation-energy coefficients.

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