| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1230215 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2014 | 4 Pages |
•The X-ray powder diffraction measurements have shown that moganite most probably exists in the selected Polish cherts.•The MIR spectra have revealed the presence of an analytical band (characteristic of moganite).•Raman spectroscopic studies confirmed the presence of moganite in tested cherts.
The authors discuss the results of structural investigations (XRD, MIR, Raman) of Polish cherts from different geological formations. The X-ray diffraction analyses explicitly confirmed the presence of moganite, which was identified on the basis of satellite XRD peaks positioned/occurring close to the quartz reflections and the additional reflections with the dhkl values 4.456 and 3.101 Ǻ, and established its amounts as varying between about 1 and above 17 wt%. The mid-infrared and Raman spectroscopy also proved the presence of moganite, indicated by the 695 and 560–555 cm−1 bands, respectively. These analytical finds allow to identify moganite in samples containing various SiO2 polymorphs.
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