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 Study Methods

Microscopy and X-ray difractionVitroclastic tuff with mechanical clastic structure consisting of fragments of angular crystals (crystalloclasts) caught in a fundamental ground finely crystallized. The ground consists of diagenetic minerals resulted by crystalliyation of volcanic glass. The texture of the rock is aleuritoplasmatic.Crystalloclasts: participate in a proportion of about 10% and are represented by quartz, plagioclase feldspar, biotite (opacified) and mucosovite.The background (90%) consists of an association of minerals of digenetic origin formed on the account of volcanic glass. Diagentice minerals are represented by zeolites, clay minerals, chlorite, which are present along with calcite and iron oxy-hydroxides (1%).CompozițieNr. crt.IndicatorsMethodReference standardDetermined valueMeasurement unit1Loss on ignitionP.S. CHS-150STAS 963/3/739.25%2SiO2P.S. CHS-151STAS 9163/4/7368.84%3Al2O3P.S. CHS-152STAS 9163/6/8913.86%Code of zeolitesNr. crt.Tested parameter/ResultValueRemarks1Natural zeolite sieved; measured fraction 0.6-1 mmTotal surface area15.82 m2/gTotal volume of pore0.030 cm3/gAverage pore radiusPore size distribution is very broad; material has pores withStudy MethodsTo determine the mineralogical and petrographic characteristics of rock samples the following investigations were carried out:microscopic study in polarized light on thin section. Thin sections were studied using a Nikon Eclipse 2000 microscopeX-ray diffraction on natural sample using a BRUKER NCE diffractometer. Mineralogical and petrographic description and characterization are achieved complying with SREN 932-3 / 1998 standard, completed with the requirements of the current documents regarding the nomenclature and classification of rocks.Study MethodsTo determine the mineralogical and petrographic characteristics of rock samples the following investigations were carried out:microscopic study in polarized light on thin section. Thin sections were studied using a Nikon Eclipse 2000 microscopeX-ray diffraction on natural sample using a BRUKER NCE diffractometer. Mineralogical and petrographic description and characterization are achieved complying with SREN 932-3 / 1998 standard, completed with the requirements of the current documents regarding the nomenclature and classification of rocks