plugbayonetit

Plugbayonetit is a fictional mineral introduced for illustrative purposes in discussions of mineral nomenclature and crystal-chemical description. The name is constructed as a compound noun combining 'plug' and 'bayonet' with the standard mineral suffix -it, to suggest a compact, blade-like crystal habit and a simple, illustrative formula. In the hypothetical description, plugbayonetit is classified as a sulfide-oxide mineral with a layered structure and a monoclinic crystal system. Crystal habit consists of short prismatic blades up to a few millimeters long, forming intergrown aggregates; luster is metallic; color steel-gray; streak dark gray. Mohs hardness is given as 5–6, with good cleavage in one direction. The illustrative chemical formula is represented as (Fe,Mn)2S2O2, reflecting common substitution patterns in sulfide-oxide minerals, and a theoretical density of about 4.8–5.2 g/cm3. Formation is described in fictional contexts as arising in high-temperature metasomatic zones in the Mekara region, involving metasomatic exchange between iron sulfides and oxides under reducing conditions. Occurrence is imagined as trace intergrowths in hydrothermal veins crossing sedimentary and volcanic rocks. Etymology notes that the name references the plug-bayonet concept to evoke a security-locking morphology. In education and simulations, plugbayonetit serves to demonstrate mineral naming conventions, crystal-structure descriptors, and the way petrological narratives are built; it has no confirmed natural occurrence or economic significance.