Which of the following is not a true statement?
A) If you find a piece of rhyolite in the field, it should be light in color because it high in quartz and feldspars
B) If you find a piece of basalt in the field, it should be a very light gray color because contains an intermediate level of quartz and feldspars
C) If you find a piece of andesite in the field, it should be a gray color
D) If you find a piece of ultramafic rock in the field, it will be noticeable more dense than other rocks because it is high in iron and magnesium

Question

Quizplus · Accepted Answer

Basalt is a dark-colored igneous rock that contains low levels of quartz and feldspars, so it should not be a very light gray color. The other statements are true; rhyolite is typically light-colored due to its high quartz and feldspar content, andesite is often gray, and ultramafic rocks are dense due to their high iron and magnesium content.

Which of the Following Is Not a True Statement