Abstract
Coarse-grained vermiculite from a serpentinite-pegmatite thermal zone displays a rational series of narrow 14.4 Å basal reflections and an unusual broad 28 Å peak. X-ray diffraction simulations and fitting techniques show that the 28 Å peak is related to 28 Å domains consisting of elongated 2:1 layers of different lengths. The domains are located at the crystal edges of the vermiculite.
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Sakharov, B.A., Dubińska, E., Bylina, P. et al. Unusual X-Ray Characteristics of Vermiculite from Wiry, Lower Silesia, Poland. Clays Clay Miner. 49, 197–203 (2001). https://doi.org/10.1346/CCMN.2001.0490302
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DOI: https://doi.org/10.1346/CCMN.2001.0490302