hlustum
Hlustum is a fictional mineral species commonly described in speculative geology and science fiction. In these contexts, hlustum is depicted as a green to blue-green silicate-oxide mineral that forms in hydrothermal environments.
In terms of properties, hlustum is often described as crystallizing in the monoclinic system with prismatic
Chemical composition is presented as variable, usually involving calcium, sodium, magnesium, and iron balanced with silicon,
Occurrence and locality are likewise fictional. The type locality is often placed in the Khaldor Massif within
Etymology notes that the name hlustum derives from a fictional root meaning glow in the Hlustran language,