暗色矿物（dark mineral），是指橄榄石、辉石、角闪石、黑云母和不透明矿物等的总称，为镁铁质矿物（mafic mineral）的同义词。
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.
利用岩石薄片X衍射技术，在松辽盆地深层富碱酸性火山岩中识别出特征的碱性暗色矿物——钠铁闪石，从而确定其为碱流岩。
Using thin section X-ray diffraction techniques, his paper identified arfvedsonite in volcanic rocks from Songliao Basin, and thus confirmed that the volcanic rocks are composed of pantellerite.
用高倍荧光显微镜观察，在这些暗色泥岩的砂质碎屑矿物和自生矿物中，发现丰富的微石油包裹体群。
With high magnification of microscopy, a lot of petroleum inclusions were found, which occur in the fissures of sand grains and authigenic minerals in the source rock.
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