Figure 2 | Scientific Reports

Figure 2

From: Microbial and diagenetic steps leading to the mineralisation of Great Salt Lake microbialites

Figure 2

(A) X-ray diffraction (XRD)-based composition of the mineral fractions from a lithifying mat (Curve 1a: fraction <100 μm; Curve 1b: fraction < 2 μm) and a microbialite (Curve 2; bulk). (B) Fourier Transform Infrared Spectrometry (FTIR) of a lithifying microbial mat (1). The absorption band at 3685 cm−1 indicates the presence of trioctahedral Mg3-OH groups. The others bands (red values) are typical of aragonite. Curves 2, 3 and 4 show the evolution of the 3685 cm−1, band at respectively 150 °C, 200 °C and 300 °C.

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