Glauberite is a monoclinic sodium calcium sulfate mineral with the formula Na 2 Ca(S O 4) 2.. It was first described in 1808 for material from the El Castellar Mine, Villarrubia de Santiago, Toledo, Castile-La Mancha, Spain.It was named for the extracted Glauber's salts after the German alchemist Johann Rudolf Glauber (1604–1668).. Glauberite often forms in continental and marine evaporite ...
Many Glauberite specimens in collections are not truly Glauberite, but rather other minerals that formed a pseudomorph or epimorph over the Glauberite. Glauberite itself is in fact a rare and unstable mineral, but its remnants and castings are much more prevalent. This is evident by an abundance of empty casts and pseudomorphs found in localities where little or no Glauberite was ever found.
Glauberite definition is - a light-colored brittle sodium calcium sulfate Na2Ca(SO4)2 having a vitreous luster and saline taste.
Glauberite in its original state has not been found at the Fan-wood quarry. The Fanwood quarry: Somerset County New Jersey  studied AE properties of halite, glauberite , and gypsum during compression test with different loading styles and saturation conditions.
Glauberite definition, a mineral, sodium calcium sulfate, Na2Ca(SO4)2, often found as a deposit on the beds of salt lakes. See more.
Glauberite also becomes cast by several minerals. It is soluble in water and probably this is the reason for this tendency. After glauberite forms other minerals grow on top of the crystals. Later, the glauberite dissolves away, leaving a cast of itself as the only evidence of its past presence.
Glauberite has a Mohs hardness of 2.5-3.0, perfect cleavage in one direction, a vitreous luster that is often covered with an efflorescent coating, and a specific gravity of 2.7-2.8. It is transparent to translucent and colorless; crystals with efflorescent coatings are white.
Brongniart, A. (1808). Mémoire sur une nouvelle espèce de minéral de la classe des sels, nommée Glauberite. Journal des Mines, 23, 5-20. Calvo, M. (2011) William Maclure, glauberite and the Academy of Natural Sciences of Philadelphia. Mineral Up, 2 (5), 6-7. Calvo, M. (2014). Minerales y Minas de España. Vol VI.
PE Glauberite = 3.43 barns/electron U=PE Glauberite x rElectron Density= 9.47 barns/cc. Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units) Glauberite is Not Radioactive : Glauberite Classification: Dana Class: 28.04.02.01 Anhydrous Acid and Sulfates
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