The writer first notes some similarity in morphology of quenching crystals between terrestrial basalt and casting stone, and then descries more similarity in composition and morphology of quenching pyroxene between casting stone and some lunar basalt. The relationship between the composition and trend of crystallization of pyroxene in various basalt and its cooling history are discussed in turn. In basalt petrurgy, the morphology and high A12O3 content of pyroxene are controlled by definite degree of undercooling, say, under the cooling rate of about 30°-40℃/minute, in the non-equilibrium condition. Under theis condition, the plagioclase molecular can enter into the pyroxene structure in the form of Ca-tsch molecular+SiO2. Some lunar basalt is a pyroxene vitrophyre consisting primarily of accicular pyroxene phenocrysts and glass matrix. The pyroxene always shows zonal structure with high Al2O3 and TiO2 contents increasing to a maximum of 14.0 and 3.5wt.% respectively toward the rim. This fact argued that there is an analogy between the quenching augite of the casting stone and ihe pyroxene of some lunar basalt in their crystallization process. It is postulated that the zoning trend and the high A12O3 content of pyroxene in some lunar basalt may be attributed to the crystallization in the absence of co-crystallization plagioclase under much rapid cooling condition, which never occurs in the terrestrial circumstance.
. 1975, 从玄武岩铸石论月球玄武岩的冷却史. 地质科学, 10(2): 150-165.
. A DISCUSSION ON THE COOLING HISTORY OF SOME LUNAR BASALT FROM THE BASALT PETRURGY[J]. Chinese Journal of Geology, 1975, 10(2): 150-165.