A fluctuating solution to the dolomite problem.

Area of Science:

• Geochemistry
• Mineralogy
• Earth Science

Background:

• Carbonate minerals are ubiquitous in Earth's crust.
• Understanding their formation is crucial for geological and environmental studies.
• Previous research has focused on static conditions, overlooking dynamic processes.

Purpose of the Study:

• To investigate the role of dissolution and crystal growth cycles in carbonate mineral formation.
• To elucidate the mechanisms driving the development of common carbonate minerals.

Main Methods:

• Experimental simulations of dissolution and crystal growth.
• Microscopic and chemical analysis of mineral samples.
• Thermodynamic modeling of mineral precipitation.

Main Results:

• Observed cyclical patterns of mineral dissolution and subsequent regrowth.
• Identified specific environmental conditions favoring these cycles.
• Quantified the impact of these cycles on crystal morphology and purity.

Conclusions:

• Dynamic dissolution-crystal growth cycles are fundamental to the formation of common carbonate minerals.
• These processes influence mineral texture, purity, and overall abundance.
• The findings provide new insights into carbonate diagenesis and mineral evolution.