1. Quartz (SiO2): A hard, glassy mineral that is often found in igneous and metamorphic rocks.
2. Feldspar (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8): A group of minerals that are the most abundant in Earth's crust. They are found in igneous, sedimentary, and metamorphic rocks.
3. Mica (KAl2(AlSi3O10)(OH)2): A group of minerals that are known for their perfect cleavage, making them easy to split into thin sheets. They are found in igneous, sedimentary, and metamorphic rocks.
4. Amphibole (Ca2(Mg,Fe)5Si8O22(OH)2): A group of minerals that are often found in metamorphic rocks. They are also found in igneous rocks.
5. Pyroxene (CaFeSi2O6): A group of minerals that are found in igneous and metamorphic rocks. They are also found in some sedimentary rocks.
6. Olivine ((Mg,Fe)2SiO4): A mineral that is found in mafic and ultramafic igneous rocks.
7. Calcite (CaCO3): A mineral that is found in sedimentary rocks, particularly limestone and marble.
8. Dolomite (CaMg(CO3)2): A mineral that is similar to calcite, but contains magnesium. It is found in sedimentary rocks, particularly dolostone.
These eight minerals make up a large majority of the rocks found on Earth's surface. Understanding their properties and how they interact with each other is essential for understanding geology.
