The two main types of igneous rock are intrusive and extrusive. Intrusive rocks form underground and have larger crystals due to slower cooling. Extrusive rocks form on the Earth's surface and have smaller crystals due to rapid cooling.
The physical properties are different, especially the color.
Larger crystals are formed when the conditions for crystal growth remain constant for a longer period, allowing more molecules to arrange into a larger, more organized structure. In contrast, smaller crystals may form when conditions fluctuate or change rapidly, limiting the growth of individual crystals.
During metamorphism, crystals can grow larger through a process called recrystallization, where existing minerals rearrange their atoms to form larger crystals. This can happen due to changes in temperature, pressure, or the presence of fluids in the rock. So, yes, crystals can grow larger during metamorphism.
The size of the crystals depend on the time it took the rock to cool. Slow cooling rocks have larger crystals because they had a longer time to grow their crystals. For example Basalt is an volcanic extrusive igneous rock that forms from rapid cooling of the magma and are usually located near the surface or on the ocean floor, it has finer crystals not visible by the naked eye. Granite is an intrusive igneous rock that forms from slow cooling of the magma within the earth crust, it has larger crystals.
A crystal of course!
The two main types of igneous rock are intrusive and extrusive. Intrusive rocks form underground and have larger crystals due to slower cooling. Extrusive rocks form on the Earth's surface and have smaller crystals due to rapid cooling.
Granite with larger crystals, basalt with smaller crystals.
The physical properties are different, especially the color.
Larger crystals are formed when the conditions for crystal growth remain constant for a longer period, allowing more molecules to arrange into a larger, more organized structure. In contrast, smaller crystals may form when conditions fluctuate or change rapidly, limiting the growth of individual crystals.
During metamorphism, crystals can grow larger through a process called recrystallization, where existing minerals rearrange their atoms to form larger crystals. This can happen due to changes in temperature, pressure, or the presence of fluids in the rock. So, yes, crystals can grow larger during metamorphism.
It's because different colours of light traverse at different speeds, when they're all traversing at the same speed the light colour is, 'transparent' light traverses at different speeds through crystals / glass due to refraction.
No, crystals are chemical compounds that are not considered to be alive.
The size of the crystals depend on the time it took the rock to cool. Slow cooling rocks have larger crystals because they had a longer time to grow their crystals. For example Basalt is an volcanic extrusive igneous rock that forms from rapid cooling of the magma and are usually located near the surface or on the ocean floor, it has finer crystals not visible by the naked eye. Granite is an intrusive igneous rock that forms from slow cooling of the magma within the earth crust, it has larger crystals.
There are different minerals in different crystals which make them different colors. And "imperities"
The large crystals are known as phenocrysts.
Intrusive rocks form beneath the earth's surface, so they cool very slowly, which produces larger crystals.