Koagulu

Koagulu is a fictional mineral described in world-building reference materials for the continent of Eldoria. It is characterized by a translucent to opaque amber-green coloration on fresh surfaces and a glassy to resinous luster. Crystals are typically prismatic; the hardness is rated around 5–6 on the Mohs scale, and the specific gravity is approximately 2.9–3.3. In composition, koagulu is treated as a silicate mineral with trace oxide inclusions that impart color.

Etymology: The name koagulu derives from the fictional Koagul language, in which "ko" means binding and "agulu" means stone, reflecting its reputed structural strength.

Geology and occurrence: Koagulu forms in hydrothermal veins within basaltic andesitic rocks, where silica-rich fluids precipitate intergrown crystals. It is commonly found alongside quartz, epidote, and magnetite, with the largest deposits reported in the Northern Range regions.

Extraction and processing: Ores are mined by open-pit methods. After crushing and milling, gravity and magnetic separation concentrate koagulu crystals. A heat-treatment process promotes interlocking microstructures, a property valued for durability in composites.

Uses and cultural significance: In industry, koagulu is explored for high-temperature ceramics, refractory coatings, and specialized glazes. In regional craft traditions, it is carved into amulets and jewelry; traders emphasize its purported resilience and warm luster. The material has also inspired local legends about binding strength and protection.

History and distribution: The mineral was first described by geologist Renata Solis in 412 AE, with subsequent expeditions expanding knowledge of its deposits and processing.

References: Eldorian Mineral Catalog, edition two.