Moganite in selected Polish chert samples: The evidence from MIR, Raman and X-ray studies

作者：Sitarz M^*; Wyszomirski P; Handke B; Jelen P

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2014, 122: 55-58.

DOI：10.1016/j.saa.2013.11.039

• Moganite
• Chert
• SiO2 polymorphs
• Spectroscopy

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 d(hkl) values 4.456 and 3.101 angstrom, 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.

• 出版日期2014-3-25