Fluid Components in Cordierite from the Rocks of Epidote-Amphibole Facies of the Muzkol Metamorphic Complex, Tajikistan: Pyrolysis-Free GC-MS Data

The composition of volatile components cordierite from the Muzkol metamorphic complex was studied using shock destruction with pyrolysis-free gas chromatography-mass spectrometry (GC-MS) simultaneous IR and Raman spectroscopy. Applying GC-MS procedure, component relative concentrations (rel.%) different zones crystals were determined. It found that substantially magnesian formed a predominantly aqueous-carbonic acid fluid (from 57.06 to 67.88 rel.% H2O, 24.29 32.95 CO2). From center towards crystal periphery, molar fraction carbon dioxide (CO2/(H2O + CO2)) decreases 0.36 0.26, whereas alkane/alkene ratio increases 0.80 0.88. At least 11 homologous series organic compounds among identified components, in addition water dioxide, determined, including oxygen-free aliphatic cyclic hydrocarbons (paraffins, olefins, alkanes alkenes, arenes, polycyclic aromatic (PAHs)), as well oxygen-containing (alcohols, esters, aldehydes, ketones, carboxylic acids) heterocyclic (furans, dioxanes) compounds.