Table of Contents
Crystals, Volume 9, Issue 2 (February 2019)
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Cover Story (view full-size image) Introducing pyruvic acid and UV radiation into the growing process of silica-carbonate biomorphs [...] Read more. Introducing pyruvic acid and UV radiation into the growing process of silica-carbonate biomorphs leads to variations in the morphogenesis of classical biomorph structures (helices, worms, and cardioid sheets). Photolysis of pyruvic acid (PA) (a presumably important reactant in primitive metabolic pathways) creates a source of carbonate ions that induces the precipitation of silica-carbonate biomorphs in the absence of environmental CO2. Under specific conditions, the precipitation of carbonates of alkaline earth metals forms non-usual crystalline habits, i. e., semi-spherical smoothed shapes sized between 10 and 70 µm; a homogeneous population of spheroids on a glass substrate, resembling monococci bacterias, can then be grown under purely inorganic chemistry. View this paper.