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. 2021 Nov 22;22(22):12588. doi: 10.3390/ijms222212588

Figure 8.

Figure 8

Comparative Raman spectra of calcite standard (blue line) with that of nanocrystalline phases isolated from skeletal fibers of I. basta demosponges collected near Guam (USA) (red line) and in coastal waters of Australia (green line).