50 years
It doesn't. Granite is an igneous rock, not metamorphic. However, quartzite is metamorphic and is made from sandstone.
The minerals in sandstone recrystallize when granite first turns into sandstone a gritty sedimentary rock under weathering and erosion and then into the metamorphic rock quartzite under heat and pressure and then it goes all the way throughout the rock cycle and back into its original form of granite a igneous rock and is formed when magma recrystallizes.
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Quartzite is a metamorphic rock, that, in most cases, is 5,000 years old. Even thogh this rock is called Quartzite, it is not made from quartz. Instead, Quartzite is made from a form of limestone.
Quartzite is often referred to as "quartzite rock" or simply "quartzite." It is a metamorphic rock that is composed primarily of quartz grains.
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Quartzite is a metamorphic rock.
Quartzite is crystalline.
Quartzite is metamorphosed sandstone.
It doesn't. Granite is an igneous rock, not metamorphic. However, quartzite is metamorphic and is made from sandstone.
Quartzite can appear in many colors.
Quartzite
Quartzite
The minerals in the sandstones usually recrystallize when it changes into quartzite. Heat must be applied to sandstone to change it into quartzite.
The most common metamorphic rock associated with the regional, contact, or depth of burial metamorphosis of sandstone is quartzite.