What rock forms from the metamorphism of sandstone? Quartzite Marble

Quartzite is the rock that forms from the metamorphism of sandstone. Here are the steps:

1. Sandstone is a sedimentary rock composed mainly of sand-sized minerals or rock grains, most commonly quartz and/or feldspar.

2. When sandstone is subjected to high heat and pressure, as occurs in the Earth's crust, it changes physically and chemically.

3. This process, known as metamorphism, causes the sand grains to compact and become tightly interlocked, increasing the hardness and density of the rock.

4. The quartz and feldspar in the sandstone recrystallize during metamorphism, forming a dense rock composed almost entirely of quartz. This rock is known as quartzite.

Marble, on the other hand, is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. It is composed primarily of the mineral calcite.