Prosedrene

Prosedrene is a fictional mineral species created for educational illustration in mineralogy and crystallography. It is described as a monoclinic silicate with a variable calcium-magnesium-iron borosilicate composition, reflecting substitutions among Ca, Mg, Fe, Si, and B and typical borosilicate behavior.

In terms of physical properties, Prosedrene forms prismatic to tabular crystals with a pale blue to green color and a vitreous luster. It has a Mohs hardness around 6 to 6.5 and a specific gravity near 3.2. Cleavage is imperfect in one direction with an uneven fracture, and the mineral yields a light, pale streak.

Optically, Prosedrene is biaxial in polarized light, with moderate birefringence and first-order interference colors under standard petrographic conditions. It is commonly associated with quartz, chlorite, plagioclase, and muscovite in illustrative assemblages.

Occurrence and formation: Prosedrene is described as forming in high-grade metamorphic rocks and at metamorphosed carbonate-silicic contacts, typically within the fictional Proserpine belt or Proserpine Formation. It is thought to crystallize from metamorphic fluids rich in boron and aluminum, under conditions that encourage complex silicate formation.

Etymology and status: The name Prosedrene is derived from the fictional Proserpine region and conventional mineral-naming practices. It is not an officially recognized mineral species and is used here for explanatory purposes. Uses: No industrial applications are associated with Prosedrene; it serves as an educational model for teaching crystal chemistry, mineral classification, and petrographic description.