Rowlandite is a rare mineral that belongs to the phosphate group. It is named after Frank R. Rowland, an American mineralogist who first described this mineral. Rowlandite can be categorized as a hydrated lead calcium phosphate, with a chemical formula of (Pb,Ca)(UO2)3(PO4)2(OH)4·4H2O. This mineral usually occurs as a secondary mineral in oxidized uranium ore deposits.
Physically, rowlandite appears as thin, tabular crystals with a distinct yellow to yellow-green color. It has a vitreous to greasy luster and is often translucent. The crystal system is monoclinic, and the mineral may display perfect cleavage in one direction.
Rowlandite is primarily found in association with other uranium minerals such as uraniumite, autunite, and meta-autunite. It forms in the oxidized zone of uranium deposits, where it is formed through geochemical processes involving the alteration of primary uranium minerals.
Due to its scarcity and specific geological occurrence, rowlandite does not have any significant industrial uses. However, it holds immense value in the field of mineralogy and serves as an important indicator of the geological conditions under which it formed.
In summary, rowlandite is a rare phosphate mineral found in oxidized uranium ore deposits. It possesses distinct physical properties, including a yellow-green color and tabular crystal structure. While lacking practical applications, rowlandite contributes to our understanding of mineral formation and provides valuable insights into the processes of uranium deposition.
