Calcite an overview ScienceDirect Topics
Aragonite and calcite are the two calcium carbonate polymorphs that give the shell of molluscan bivalves their strength and elasticity The photosynthesis process to provide carbonate in the occupancy of calcium ions is an autotrophic route/pathway Photosynthetic bacteria have two groups the oxygenic and anoxygenic As shown in Eq the oxygenic and anoxygenic photosynthesizing