Granitic rocks mainly consist of quartz, plagioclase and alkaline feldspar and hence have lower densities.
花岗质岩石主要由石英、斜长石和碱性长石组成，并因此具有较低的密度。
Major minerals of lunar granitic clasts are quartz, K-feldspar and calcic plagioclase with granophyric intergrowths.
月球花岗岩碎屑的主要矿物为石英、钾长石和钙质斜长石，具花斑状结构；
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