Sentences with phrase «pyroxene mineral»

Not exact matches

Humayun's team analyzed rock pieces rich in pyroxene and feldspar — minerals that would have been among the first to settle out of a cooling magma chamber.

The huge Keck II telescope joined the Vesta patrol in 1999, producing spectra that showed Vesta's surface is covered with pyroxene and olivine, minerals common in terrestrial volcanoes.

The north - south variation in minerals indicates that the deep crust exposed in the southern Rheasilvia region is dominated by pyroxene - rich, diogenitic material while the equatorial region seems to retain the most ancient eucrite - rich mineralogy.

NASA's Curiosity rover gets its first taste of Mars and finds plagioclase feldspar, pyroxene, and olivine minerals.

To the naked eye, pyroxenes are black minerals and are very abundant in basalts, such as the volcanic rocks found in Hawaii.

The signatures of pyroxene, an iron - and magnesium - rich mineral, in these meteorites have been found to match those of rocks observed on Vesta's surface.