nägite

Nägite is a fictional mineral described in educational geology texts and speculative mineralogy to illustrate how mineral names are formed and how properties are reported. In these contexts, nägite is described as a hydrated sodium aluminum silicate with minor amounts of magnesium and calcium. It is said to crystallize in the monoclinic system and to occur as prismatic crystals and as coarse aggregates. The luster is typically vitreous, and the color ranges from colorless to pale yellow, with a Mohs hardness around 6 to 6.5 and a low to moderate specific gravity.

Formation and occurrence in the fictional narrative place nägite in metamorphic environments where siliceous rocks undergo low to medium-grade alteration, often in zoned hydrothermal settings. It is frequently paired with minerals such as quartz, chlorite, muscovite, and albite, and is described as forming in veins or as an alteration product within schists and gneisses.

Etymology and naming conventions for nägite reflect common mineral-naming practices. The name is constructed by combining a fictional root, nägi, from the imagined region Nägia, with the standard suffix -ite used for minerals. The type locality and regional context are entirely hypothetical, often designated as the Näg Quarry in the northern ranges of the fictional Nägian Alps.

Relevance and usage: because nägite is not a real mineral, it has no natural occurrence, commercial use, or scientific authority outside instructional examples. It serves to demonstrate how mineral descriptions are structured, how properties are stated, and how locality information is presented in a neutral, verifiable format.