rock so closely grained that its individual crystals cannot be seen by the unaided eye
Origin of aphaniteClassical Greek aphan?s, invisible from a-, not + base of phainein, to appear (see fantasy) + -ite
A dense, homogeneous rock with constituents so fine that they cannot be seen by the naked eye.
Origin of aphaniteFrom Greek aphanēs unseen a- not ; see a- 1. phainesthai phan- to appear passive of phainein to show ; see phenomenon .
From Ancient Greek ἀφανής (aphanēs, “indistinct, unseen, obscure”).