These geochemical signatures can be compared with what are called "chondritic" meteorites: primitive meteorites that have fallen to Earth in modern times, but have never undergone any sort of metal segregation.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference

Until recently, researchers generally thought that the Earth and the other planets of the solar system were chondritic, meaning that the mantle's chemistry was thought to be similar to that of chondrites -- some of the oldest, most primitive objects in the solar system.    From Wordnik.com.  [Earth News, Earth Science, Energy Technology, Environment News] Reference

The problem is that all those bits of iron, and loose chondritic regolith that are attracted to the magnetic field will pull loose from the asteroid and clump to the magnet.    From Wordnik.com.  [Asteroid Capture into Earth Orbit] Reference

The basis many geologists use for dating the Earth rests on the assumption that chondritic meteorites are very representative of a “bulk Earth composition”, the composition of the early Earth.    From Wordnik.com.  [Luskin vs. Science (and Scientific American) - The Panda's Thumb] Reference

Circling Alpha Centauri A near the middle of those asteroids called the Serpent Swarm, it was originally a chondritic body with a sideritic component giving it more structural strength than is usual for that kind.    From Wordnik.com.  [Inconstant Star]

This resulted in geochemists realizing that the Earth, the Moon, and Mars all have lithic compositions that contain anywhere from five to eight percent more neodymium and samarium than the chondritic meteorites do.    From Wordnik.com.  [New Notions of Earth's Origins Needed, Says Geochemist] Reference

Given the fact that chondritic meteorites -- meteorites containing chondrules -- have a similar chemical make-up to that of our Sun, it has been taken as a given that we can figure out what the solar nebula was made of, as the Earth coalesced into being from out of it.    From Wordnik.com.  [New Notions of Earth's Origins Needed, Says Geochemist] Reference

Recovered objects were chondritic (rocky) meteorite.    From Wordnik.com.  [Signs of the Times] Reference

Spectrometer, show poor agreement with any class of chondritic meteorite.    From Wordnik.com.  [Space News From SpaceDaily.Com] Reference

"That's very strong evidence that Earth has a chondritic magnesium composition," Teng said.    From Wordnik.com.  [Newswise: Latest News] Reference

Assuming a chondritic model of the Earth, a piece of the primitive mantle would have certain isotope ratios of the chemical elements of helium, lead and neodymium.    From Wordnik.com.  [Earth News, Earth Science, Energy Technology, Environment News] Reference

The lack of a clear ET-PGE signature in this sample suite is inconsistent with the impact of a large chondritic projectile at the Bølling-Allerød/Younger Dryas transition.    From Wordnik.com.  [Anthropology.net] Reference

Teng's group analyzed different types of rocks from different depths of the Earth's mantle from a site in North China and compared the results to those of samples from chondritic meteorites.    From Wordnik.com.  [Newswise: Latest News] Reference

Many researchers have analyzed the chondritic meteorite for amino acids and other possible precursors to life, because some theories hold that life on Earth began with the delivery of prebiotic organic compounds from space via asteroids or comets.    From Wordnik.com.  [Scientific American] Reference

The model that the Earth was chondritic was called into question with a discovery five years ago by a team at the Carnegie Institution of Washington, which suggested the ratio of neodymium on Earth was higher than what would be expected if the Earth were indeed chondritic.    From Wordnik.com.  [Earth News, Earth Science, Energy Technology, Environment News] Reference

'large chondritic impact event' that had affected the ocean in the predicted manner.    From Wordnik.com.  [Anthropology.net] Reference

The sequential evolution of Earth's mineralogy from chondritic simplicity to Phanerozoic complexity introduces the dimension of geologic time to mineralogy and thus provides a dynamic alternate approach to framing, and to teaching, the mineral sciences. ".    From Wordnik.com.  [About.com Geology] Reference

(75) (covering a fluence of 30% of Earth's surface) (Fig. S1), and were not formed upon surface impact, a chondritic projectile of 1.2 km in diameter should produce an Ir fluence of.    From Wordnik.com.  [Anthropology.net] Reference