Epidote is a calcium aluminium iron sorosilicate mineral.
Epidote crystals
Epidote from Alaska
Deformed epidote within greenschist rock from Itogon, Philippines
Sample of dollaseite (dark brown matrix at arrow points) from Sweden
Silicate minerals are rock-forming minerals made up of silicate groups. They are the largest and most important class of minerals and make up approximately 90 percent of Earth's crust.
Lithium aluminium silicate mineral spodumene
Diatomaceous earth, a biogenic form of silica as viewed under a microscope. The imaged region measures approximately 1.13 by 0.69 mm.
Nesosilicate specimens at the Museum of Geology in South Dakota
Kyanite crystals (unknown scale)