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首页> 外文期刊>Journal of geophysical research. Planets >Apollo sample 70051 and high- and low-Ti lunar soil simulants MLS-1A and JSC-1A: Implications for future lunar exploration
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Apollo sample 70051 and high- and low-Ti lunar soil simulants MLS-1A and JSC-1A: Implications for future lunar exploration

机译：阿波罗70051号样品以及高钛和低钛月球土壤模拟物MLS-1A和JSC-1A：对未来月球探测的意义

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Plans for establishment of a manned lunar base make it imperative that considerable research be performed on the use of lunar rocks and soil for in situ resource utilization (ISRU). Samples and simulants of lunar soil must be established for these studies. We present here the bulk and mineral chemistries of unusual Apollo 17 sample 70051, the <45-μm fraction of 70051, and the bulk and mineral chemistries of lunar soil simulants MLS-1A, JSC-1A, and JSC-1Af. Comparison to lunar soils collected during the Apollo missions shows that 70051 has bulk chemistry similar to that of soils from the North Massif bounding the Valley of Taurus-Littrow. Particle-size distribution reveals 70051 to differ significantly from bona fide lunar soils. It is a coarse, immature sample with >80 % of particles >50 μm, and a constrained range of particle sizes (～50% of particles are 50–100 μm in size) when compared to typical Apollo 17 soils (e.g., 71501,1 has ～20% of particles in the 50–100 μm range). Plagioclase, present in rock fragments and as mineral fragments (up to sizes ～1 mm), is the main phase present (50.5 vol%). Simulant JSC-1A has a chemistry that is atypical for most of the Moon and contains 49.3 vol% glass. Simulant MLS-1A resembles the FeO, TiO2 and Al2O3 contents of mare basalt soils. Both lunar soil simulants have specific properties for certain in situ resource utilization studies, however, neither fully matches both the physical and chemical characteristics of lunar soil. Sample 70051, as a 1.4-kg haphazard mixture of lunar soil particles, is probably the best of the Apollo “soil” samples to be allocated for various ISRU investigations, where the uniqueness of lunar soils is deemed a necessity for study.
机译：建立载人月球基地的计划使当务之急是对利用月球岩石和土壤进行原地资源利用（ISRU）进行大量研究。这些研究必须建立月球土壤的样品和模拟物。我们在这里介绍了不寻常的Apollo 17样本70051的散装和矿物化学，70051的<45-μm部分，以及月球土壤模拟物MLS-1A，JSC-1A和JSC-1Af​​的散装和矿物化学。与在阿波罗飞行任务期间收集的月球土壤进行的比较表明，70051的化学性质与北断层块以金牛座-利特罗山谷为界的土壤相似。粒度分布表明70051与真正的月球土壤有显着差异。与典型的Apollo 17土壤（例如71501）相比，它是粗略的，不成熟的样品，其中> 80％的颗粒> 50μm，并且粒径范围受限制（约50％的颗粒尺寸为50–100μm）。 1的50-100微米范围内有约20％的颗粒）。斜长石存在于岩石碎片中，并作为矿物碎片（最大尺寸约为1 mm）存在，是主要相（50.5体积％）。 Simulant JSC-1A的化学成分对于大多数月球而言都是非典型的，并且包含49.3％（体积）的玻璃。模拟MLS-1A与母马玄武岩土壤中的FeO，TiO2和Al2O3含量相似。两种月球土壤模拟物对于某些原地资源利用研究均具有特定的性质，但是，两者均不完全符合月球土壤的物理和化学特性。 70051样品是一种1.4千克的月球土壤杂物混合物，可能是分配给各种ISRU研究的阿波罗“土壤”样品中最好的一种，认为月球土壤的独特性是研究的必要条件。

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