非顯晶岩; 隱晶岩
Aphanite \Aph"a*nite\, n. [Gr. ? invisible; 'a priv. + ? to appear.] (Min.) A very compact, dark-colored ?ock, consisting of hornblende, or pyroxene, and feldspar, but neither of them in perceptible grains.
aphanite n : fine-grained homogeneous rock (such as basalt) containing minerals undetectable by the naked eye