Kolonnide

Kolonnide is a fictional mineral used in educational and speculative contexts to illustrate mineralogical classification. In these sources, it is described as a metallic silicate that typically forms columnar aggregates. The name derives from the column-like habit observed in its crystals.

Crystal chemistry and properties: Kolonnide is described as belonging to the tetragonal crystal system, forming elongated prismatic and tabular crystals. Colors range from steel-gray to bluish-gray, with a metallic luster and a dark gray streak. The Mohs hardness is reported around 6, and the density about 4.5 g/cm3. Accounts vary on its exact composition, but it is often depicted as a complex iron-silicate or mixed-metal silicate with columnar bonding.

Occurrence and formation: In fictional settings, kolonnide forms through high-temperature hydrothermal processes in veins within ultramafic or basaltic rocks and is commonly found alongside quartz, calcite, and sulfide minerals. It is particularly noted for its distinct columnar crystal habit, which gives rise to its name.

Applications and safety: Within the fictional context, kolonnide is used for teaching mineralogy, as an illustration of columnar habit, or as a decorative material in artworks. Because it is not a real substance, there are no empirical safety data. In speculative scenarios, standard dust precautions are advised to minimize inhalation or irritation.