An igneous rock with no visible crystals ____.
A)has a phaneritic texture
B)cooled quickly in a magma chamber
C)slowly on Earth's surface
D)cooled quickly on Earth's surface
E)is granite

Question

Quizplus · Accepted Answer

A rock with no visible crystals indicates that it cooled quickly on Earth's surface, preventing the formation of large, recognizable crystals. This is known as an aphanitic texture, which is characteristic of volcanic rocks that solidify rapidly in contact with air or water. Phaneritic textures, on the other hand, indicate slower cooling and the presence of visible crystals. Granite is a specific type of igneous rock, not a general characteristic of all igneous rocks.

An Igneous Rock with No Visible Crystals ____