Author Question: ________ has a large percentage of voids and is lightweight, so therefore has the ability to float ... (Read 47 times)

jwb375 · **on:** Jul 16, 2018

________ has a large percentage of voids and is lightweight, so therefore has the ability to float in water.

A) Basalt
B) Pegmatite
C) Pumice
D) Scoria

Question 2

Which of the following best describes a pegmatitic texture?

A) Large crystals that form in a fluid-rich environment late in crystallization
B) Porous texture resulting from escaping volatiles
C) Fine-grained texture composed of microscopic crystals
D) Several large crystals surrounded by a fine-grained matrix