ureilite

ureilite

[yə′rē·ə‚līt]
(geology)
An achondritic stony meteorite consisting principally of olivine and clinobronzite, with some nickel-iron, troilite, diamond, and graphite.
References in periodicals archive ?
2008) 'In situ micro-Raman and X-ray diffraction study of diamonds and petrology of the new ureilite UAE 001 from the United Arab Emirates.
We have not yet identified any other parent asteroids with as much certainty, but we know from their composition that the Aubrites and the Ureilite meteorites are rocks from the mantles of two different asteroids that had violently explosive eruptions, which ejected what should have become their crustal rocks into space at escape velocity.
Recently a NASA scientist was asked by an American broker (not Haag) to analyze a rare ureilite stone of "unknown origin.
3]'s meteorites are largely ureilites, a weird set of rocks from a body that melted and was then blown to smithereens a few million years after it formed," says geochemist Ed Scott (University of Hawai'i).
It's plotting in a region of oxygen isotope space where we've never had meteorite data points before-except for a few ureilites, which also have oddball chemistry," he said.
Their analyses revealed that the fallen stones belong to a rare meteorite class known as ureilites, dark carbon-enriched rocks that were once at least partly molten.