STARKEYITE Meaning and
Definition
-
Starkeyite is a rare mineral that belongs to the carbonate group and has a chemical formula of Mg(HCO3)2·16H2O. It was first discovered in 1952 by R.W.G. Starkey, after whom it was named. Starkeyite is classified as a hydrous magnesium carbonate and is known for its distinct crystal structure and light blue to colorless appearance.
In terms of its physical properties, starkeyite typically occurs as transparent crystals that tend to be bladed or tabular, and it often exhibits a vitreous to pearly luster. It has a relatively low hardness, measuring around 2.5 on the Mohs scale, and its density ranges between 1.75 to 1.77 g/cm³. This mineral is also characterized by its effervescence in acid due to the presence of carbonate ions.
Starkeyite is primarily found in salt deposits, particularly in arid regions where evaporation concentrates salt solutions. It commonly occurs in association with other minerals such as mirabilite, epsomite, celestine, and gypsum. Due to its scarcity, small crystal specimens of starkeyite are highly sought after by mineral collectors.
While starkeyite does not possess significant practical applications, it remains an important mineral for scientific and research purposes. The study of starkeyite provides insights into geological processes and the formation of evaporite deposits. Its chemical composition and crystal structure contribute to a better understanding of carbonate minerals and their roles within the Earth's geological history.
