这时，可采集半风化的标本观察，由于斜长石风化后颜色变浅，而与暗色矿物易于区别。
This observation can be collected semi weathered specimens, due to weathering of plagioclase pale, and can be easily distinguished from dark minerals.
这时，可采集半风化的标本观察，由于斜长石风化后颜色变浅，而与暗色矿物易于区别。
This observation can be collected semi weathered specimens, due to weathering of plagioclase pale, and can be easily distinguished from dark minerals.
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