chondrite

Hypervelocity collision and water-rock interaction in space preserved in the Chelyabinsk ordinary chondrite Eizo Nakamura, Tak Kunihiro, Tsutomu OTA, Chie SAKAGUCHI, Ryoji TANAKA, Hiroshi KITAGAWA, Katsura KOBAYASHI, Masahiro YAMANAKA, Yuri SHIMAKI, Gray E.

In these equations, N refers to chondrite values proposed by Anders and Grevesse (1989).

Compared to Cl chondrite (Sun & McDonough, 1989), LREE is more enriched than HREE in pyrites; high field strength elements are strongly depleted; the Hf/Sm, Nb/La, and Th/La ratios are almost smaller than 1.

Oxygen has a crucial advantage over other elements, as it is fairly abundant in these meteorites, comprising 10-20% of chondrite organics.

The ratio of La to Yb after chondrite standardization was expressed as [La.sub.N]/[Yb.sub.N].

As famous meteorite hunter Luc Labenne explains: "It's a chondrite type H5, with a very high metal content.

Scientists reconstructed a timeline of these collisions using a physics-based model, which reproduces the process through time, comparing its results with present-day information about chondrite meteorites.

A 27-pound stony meteorite (chondrite) from the fireball fell in Peekskill, New York, punching a hole in the rear end of an automobile parked in a driveway and coming to rest in a shallow depression beneath it." Any extraterrestrial object with the size of above 10 metres potentially has five times higher kinetic energy than the nuclear bombs dropped on Hiroshima.

8a) reveals two groupings: one group (n = 3) with significant light REE (LREE) enrichment (~ 90 to 200 times chondrite abundance), and another group (n = 3) with a much less pronounced LREE enrichment (~ 7 to 10 times chondrite abundance).

Companies are targeting carbonaceous chondrite asteroids because they contain plenty of water and metals.