Question

choose the name of the rock sample shown below. rock3 group of answer choices granite rhyolite tuff basalt

Answer 1

The rock sample shown is most likely Rhyolite, which is a felsic, extrusive igneous rock with a finely crystalline texture.

Step-by-step explanation:

The rock sample shown in the question is most likely Rhyolite. Rhyolite is a felsic, extrusive igneous rock that has a finely crystalline texture due to the cooling of high-viscosity lava. It is often light gray to pinkish to somewhat reddish in color.

Characteristics:

1. Color: Light gray to pinkish to somewhat reddish
2. Texture: Aphanitic (finely crystalline; crystals <1 mm in size)
3. Mineral content: Same chemistry and mineralogy as granite (quartz, feldspar, and mica)