Effects of Calcination on the Crystallography and Nonbiogenic Aragonite Formation of Ark Clam Shell under Ambient Condition

<div>PXRD patterns of ACS after calcination at 400–1400°C for 3 hours and cooling down with −10°C min<sup>−1</sup>, which were kept under ambient condition for three months (C = calcite; A = aragonite; H = P-trigonal Ca(OH)<sub>2</sub>; and O = fcc CaO).</div>

Advances in Materials Science and Engineering

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Figure 4

Figure 4: Effects of Calcination on the Crystallography and Nonbiogenic Aragonite Formation of Ark Clam Shell under Ambient Condition 