Sentences with phrase «pure calcite»

These organisms appear to be particularly vulnerable to ocean acidification because their shells and skeletons are more vulnerable to dissolution than pure calcite and aragonite.

WAXS (wide angle x-ray scattering) analysis of the crystalline particles finally formed at ambient conditions shows that pure calcite (the stable polymorph of calcium carbonate) forms at pH - values corresponding to high binding strength in clusters and that predominantly vaterite (the least stable polymorph) and traces of calcite form at pH - values corresponding to low binding strength in clusters (fig.

Pure calcite crystals shatter easily, but the oyster shell is organised in thin layers that shift orientation when stressed, confining damage to shallow craters and stopping fractures spreading (Nature Materials, DOI: 10.1038 / nmat3920).