reagendite

Reagendite is a fictional mineral created for educational purposes to illustrate mineral classification and nomenclature. It is not a recognized mineral species by the International Mineralogical Association and has no official property standards.

Composition and structure: In fictional sources, reagendite is described as a complex aluminosilicate with an open framework that can accommodate a variety of cations, typically including aluminum, silicon, oxygen, and trace elements such as calcium and rare-earth metals. Because it is not real, the exact chemical formula and crystallographic details vary between texts, but it is commonly depicted as forming a crystalline framework with possible hexagonal-prismatic habit in idealized specimens.

Physical properties: Descriptions commonly assign reagendite a color range from colorless to pale yellow, a vitreous luster, and a Mohs hardness around 6. It is described as transparent to translucent, with a specific gravity in the vicinity of 3.0 to 3.3 g/cm3. Cleavage is usually considered imperfect or absent in fictional accounts, and fracture is conchoidal or uneven depending on the source.

Formation and occurrence: In the fictional context, reagendite is said to form in late-stage hydrothermal systems within granitic or felsic rocks, often in or near quartz-rich veins. It is typically listed as associated with quartz, topaz, and beryl in illustrative mineral parageneses.

Etymology and naming: The name reagendite is a constructed to follow conventional mineral-naming patterns, illustrating the use of the -ite suffix. As a fictitious entry, it lacks a formal naming history.

See also: List of minerals; Silicate minerals; Aluminosilicate minerals; Hydrothermal mineralogy. Note: This article describes a fictional mineral for teaching purposes.