Mineral composition of sediment core PG2208

• Main Authors: Biskaborn, Boris K, Nazarova, Larisa B, Kröger, Tim, Pestryakova, Luidmila A, Syrykh, Ludmila S, Pfalz, Gregor, Herzschuh, Ulrike, Diekmann, Bernhard
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: AWI_Envi; AWI Arctic Land Expedition; Calcite (Intensity; 3.024Å); Chlorite (Intensity; 14Å); 7Å); COMPCORE; Composite Core; DEPTH; sediment/rock; diatoms; Dolomite (Intensity; 2.88Å); Hornblende (Intensity; 8.4Å); Illite (Intensity; 10Å); 5Å); Intensity; total; Kalifeldspar (Intensity; 3.24Å); Lake Bolshoe Toko; Yakutia; Russia; Lake sediment core; lake sediment proxies; Paleo Modelling; PalMod; PG2208; Plagioclase (Intensity; 3.19Å); Polar Terrestrial Environmental Systems @ AWI; Quartz (Intensity; 3.34Å); 4.26Å); RU-Land_2013_Yakutia; Siberia; Siberian Arctic; X-ray diffractometry (XRD) PHILIPS PW1820 goniometer; Yakutia2013; Arctic
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.942078; https://doi.org/10.1594/PANGAEA.942078

To analyze the mineralogical composition of sediments we freeze-dried and milled 19 samples for X-ray diffractometry (XRD) using a PHILIPS PW1820 goniometer (40 kV, 40 mA, from 3 to 100°, step-rate 0.05°, Co ka radiation). Data processing was performed using the free software MacDiff 4.0.7. To avoid influence of opal and organic matter in the samples (Voigt, 2009), we used the ratio of the peak area intensities of each mineral to the sum of the peak area intensities of all detected minerals, and used this value to estimate percentages.