Question

An igneous rock has large red, black, and green crystals. How else can this rock be accurately described?

fine texture
cooled quickly
intrusive origin
created by lava

Answer 1

The presence of large crystals in an igneous rock indicates that it likely cooled slowly, allowing crystals to grow to a larger size. Therefore, this rock would not be described as having a fine texture or having cooled quickly. Since it contains large crystals, it would typically be classified as an intrusive rock rather than one created by lava (which would be extrusive).

So, the rock can accurately be described as having an **intrusive origin**.