Granite stone monument Mount Rushmore National Memorial
Mount Rushmore, a stone monument in South Dakota, USA, is carved with the heads of four American presidents, including George Washington, Thomas Jefferson, Abraham Lincoln, and Theodore Roosevelt. , the statue is made of granite, a hard and strong stone ideal for the crafting of durable buildings and monuments. Granite is an igneous rock composed of minerals such as feldspar, quartz, and mica. It has a very high hardness and is very suitable for carving and sculpture. When making the Mount Rushmore statue, workers first blasted a large piece of granite on the mountain using blasting technology, and then used diamond cutters and other tools to process and carve it, and finally shaped the heads of the four presidents. It is worth mentioning that granite also has good weather resistance and corrosion resistance, so the statue of Mount Rushmore can not only withstand wind and rain but also resist the effects of natural erosion and man-made damage. These properties make granite ideal for durable monuments and buildings. In general, the material from which Mount Rushmore statues are made, granite, is a very hard, strong, durable, and corrosion-resistant stone material, which allows the statue to maintain its beauty and majesty for a long time in the wind and rain.