Popigai impact crater, Taymyrsky Dolgano-Nenetsky District, Krasnoyarsk Krai, Russia
Sample RM2538.
© Joan Rosell. RosellMinerals.com
Skalnoe deposit, Popigai impact crater, Taymyrsky Dolgano-Nenetsky District, Krasnoyarsk Krai, Russia
Mixture of diamond and a small amount of lonsdaleite
© Hiroaki Ohfuji et al.
Sample RM2538. Zircon (analysed).
Maskelynite is glass with the composition of a plagioclase that forms in meteorites and in meteorite impact craters. Ex Paolo Bosio collection Photo with Canon Eos 600 D + Bellows + Rodenstok Rodagon 50 mm 1:4,0 reversed Photo and collection Giovanni Scapin
© Giovanni Scapin 2023
Sample RM2538. Monazite-(Ce). Element w%;at% O K 25.35; 62.22 - P K 16.90; 21.43 - Ca K 1.26; 1.23 - La L 14.39; 4.07 - Ce L 26.90; 7.54 - Nd L 9.04; 2.46 - Th M 6.15; 1.04%.
Sample RM2538. Rutile (Analyzed).
Rounded grain of monazite-(Ce). SEM BSE image. EDS: Wt% O K 25.35%; P K 16.90%; Ca K 1.26%; La L 14.39%; Ce L 26.90%; Nd L 9.04%; Th M 6.15%.
Rounded zircon crystal, probably related to reidite. SEM BSE photo. Sample RM2538.
Rutile crystal included in maskelinite sample RM2538. SEM photo. Analyzed.
Satellite photo of crater (NASA, public domain). (From Wikipedia.)