hillityt
Hillityt is a fictional mineral introduced for educational and world-building purposes in geology and mineralogy. It is described as a phosphate-bearing silicate that forms under hydrothermal metamorphism of phosphate-rich rocks and is valued in fictional markets for its vivid blue-green color.
In most depictions, hillityt occurs in high-grade metamorphic terrains, especially alpine or subduction-zone complexes, where fluids
Physical properties commonly attributed to hillityt include a hardness of 5.5–6 on the Mohs scale, a blue
The name hillityt derives from the fictional Hill region where it was said to be first observed,
In educational contexts, hillityt is used to illustrate mineral identification, classification, and the interpretation of paragenetic