alkeishiukkasia
Alkeishiukkasia is a proposed class of microscopic, spherical particles observed in alkaline geochemical environments. The term derives from Finnish, combining alkeis- meaning primitive or initial and hiukkasia meaning particles. It was introduced to describe small, mineral-rich vesicles found in some alkaline sedimentary rocks and hydrothermal deposits, typically ranging from 0.5 to 10 micrometers in diameter.
These particles are typically round to slightly elongated spheres with concentric lamination. They are composed mainly
Formation and distribution: They form in environments with high pH and elevated silica supersaturation, such as
Significance and research: Alkeishiukkasia are studied as potential indicators of past alkaline geochemical conditions and as