Figure 3 | Scientific Reports

Figure 3

From: Hydrothermal calcite formation in Campi Flegrei caldera, Italy: unraveling carbon sink processes in alkaline volcanic systems

Figure 3

3D investigation of a lithic sample. (a–d) Example of lithic tuff (from Cigliano eruption). (a) 3D visualization of the digital rock. (b) Selected 2D slice extracted from the reconstructed 3D volumes. White scale bar 1 mm. (c) 3D rendering of the tomogram reported in the first panel after classification of the pixels into various phases (i.e., segmentation): violet = calcite (CC); light gray = feldspar. (d) Extracted single crystal of calcite.

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