Kremin

Kremin is a fictional mineral that appears in speculative fiction, tabletop role-playing games, and some science fiction media. In these works, kremin is described as a rare, dense mineral with distinctive electrical and optical properties, sometimes proposed as a highly efficient energy storage medium or a novel superconductor at modest temperatures. Because kremin is a fictional construct, its properties vary by author.

Common descriptive traits include a blue-green to dark gray color, a Mohs hardness in the mid range (about 6–7), and a density around 3.5 to 4.5 g/cm3. Crystals are said to be monoclinic or hexagonal, and the mineral often displays faint luminescence under ultraviolet light.

In fiction, kremin is said to originate under extreme metamorphic conditions in the crust or mantle, typically in association with pegmatites or ultramafic rocks. The name is sometimes attributed to a fictional mineralogist or derived from a constructed language within the story world.

Applications within narratives include energy storage devices, compact power sources, and advanced optics. Because of its purported properties, kremin often figures in trade networks, geopolitics, and technological development plots within the stories where it appears.

In the real world, kremin has no verified occurrence or scientific basis. It is not listed in official mineral databases, and there are no peer-reviewed studies validating its existence. It remains a fictional concept used for worldbuilding and entertainment.