Chondrite Morocco NWA 2850 - L5 (1) Meteorites Raw Minerals Stones Rocks Collecting

Description

Origin : South Morocco (Erfoud)

Geological era : Recent

Age : 2004

Size : 1 gr - mm 15 x 12 x 1

Fragment of meteoric origin 1 gr - mm 15 x 12 x 1 Meteorites Raw Minerals Stones Rocks for Collection, thin section in plexiglas box diam. cm 3, only a piece, as in photos.
Condrite NWA 2850 - L5 from individual Meteorite TKW (Thousand Kernel Weight) 651 gr, collected in 2004 in the Sahara desert near Erfoud (Errachidia province, Draâ-Tafilalet region).
Included to the Meteorite a geological tab dates paper.

Many of these Meteorites have been classified about 10 years ago and have just sold a few pieces here and there over the years. All listed in the meteoritical bulletin. These pieces are not sold by weight as they are carefully chisen specifically to be characteristics of a specific fall.

The chondrites are meteorites rocks with the same chemical composition of planetesimals, that those small cold bodies that formed in the solar system primordial. The major chemical elements present were hydrogen, helium, carbon, nitrogen, nickel and iron.
86% of the meteorites fallen on Earth are chondrites: they take their name from chondrules present in them. The chondrules are spherules of mafic minerals with small grain sizes, indicative of rapid cooling. The chondrites usually have an age of 4.6 billion years (thus dating the formation of the solar system) and is believed to have originated in the main belt of asteroids. How exactly are formed is still a topic hotly debated among scientists.
Inside them were also found presolar grains, and their isotopic composition is similar to that of the Sun. Is thought that the chondrites are unaltered material in the original solar nebula.