Oxides Minerals
Oxides form from the combination of a steel with oxygen. This group ranges from dull ores like bauxite to gem stones like rubies and sapphires. The magnetite pictured to the left is a member of this institution.
Uraninite
Uraninite is a mineral that is primarily composed of uranium oxide. It is a significant ore of uranium, which is an important element used...
Adamite
Adamite is a mineral that belongs to the arsenate class of minerals. Its chemical formula is usually written as Zn<sub>2</sub>(AsO<sub>4</sub>)(OH), indicating its composition of...
Goethite
Named after the German mineralogist Johann Wolfgang von Goethe in 1806, goethite is a common mineral. It can be brownish yellow, reddish brown, or dark brown in color, depending on the size of the crystal in the specimen—small crystals appear lighter, and larger ones darker.
Pink Star Sapphire
Pink star sapphires are a captivating variety of sapphire known for their stunning pink hues. Sapphires are a type of corundum mineral, with their...
Sapphire
Sapphire is a precious gemstone that is a variety of the mineral corundum, which is composed of aluminum oxide. It is typically blue in...
Diaspore (Zultanite)
Diaspore, also known as Zultanite or Csarite, is a unique and relatively rare mineral that belongs to the oxide mineral group. It is valued...
Wulfenite
Wulfenite is a lead molybdate mineral with the chemical formula PbMoO4. It is known for its striking crystal formations, which are typically square or...
Musgravite
Musgravite is a rare and precious gemstone that belongs to the oxide mineral family. It is a member of the taaffeite family, which also...
Spinel
Spinel is the name of both an individual mineral and of a group of metal-oxide minerals that share the same crystal structure. Minerals in this group include gahnite, franklinite, and chromite. Spinel is found as glassy, hard octahedra, or as grains or masses.
Gahnite
Gahnite is a mineral belonging to the spinel group, specifically a zinc aluminum oxide with the chemical formula ZnAl2O4ZnAl_2O_4ZnAl2O4. It is typically found in...
Psilomelane
Psilomelane is a barium manganese oxide mineral, typically presenting as black or dark gray with a submetallic to dull luster. It often forms botryoidal...
Corundum
Corundum is a mineral that is primarily composed of aluminum oxide (Al2O3) and is one of the naturally occurring crystalline forms of aluminum oxide....
