What kind of rock is crazy horse memorial made of?

Answer 1

The Crazy Horse Memorial is being carved out of Thunderhead Mountain, a knob of granitic migmatite surrounded by schists and slates. It is geologically similar to nearby Mount Rushmore. These "mountains" stand above their surroundings because they are more resistant to erosion than the metamorphic rocks surrounding them.

Answer 2

Harney Peak granite. Crazy Horse Memorial and Mount Rushmore National Monument are both carved from the Harney Peak granite, which is named for the highest point in the Black Hills of South Dakota at 7,242 feet. The granite of the Harney Peak batholith was emplaced around 1.7 billion years ago at a depth of 3 to 6 miles. Some of the granite cooled quickly, forming finer mineral grains, and some cooled more slowly forming coarse-grained pegmatite. Both carvings exhibit a mixture of each rock texture.

Answer 3

Granite.