Sentences with word «plagioclase»

The spectral character of these spots is distinct from surrounding mare and highlands material and from regions composed of pure plagioclase feldspar.

Both Longhi and Warren harbor some skepticism about the extraordinary level of plagioclase purity in the anorthosites detected by Kaguya but maintain that the general implications remain relevant.

Thousands to millions of years later, these elements combined with silicates in the moon's mantle to form plagioclase feldspars, which eventually moved to the surface and formed the moon's crust, said Roy.

The Kaguya orbiter looked for anorthosite, a type of rock enriched in the relatively low - density mineral plagioclase.

The spacecraft's survey found that in fresh craters and basins across the lunar highlands, the terrain that constitutes the majority of the moon's crust, anorthosite was not only prevalent but was almost entirely pure — that is, the rock was nearly 100 percent plagioclase.

Much of this work has been on carbonation of an abundant type of lava, basalt, which contains minor amounts of olivine together with large proportions of alumino - silicate minerals such as plagioclase feldspar.

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

Mantis unusual pendant with labrador, garnet, pyrite nd plagioclase.

Because cesium's work function is so low, the photoionization of surface atoms of the not - so - rare element on plagioclase and orthoclase may figure disproportionately in nucleation processes.

Williamson BJ, Herrington RJ, Morris A (2016) Porphyry copper enrichment linked to excess aluminium in plagioclase.

Typically, the first to crystallize are two magnesium - and iron - rich minerals (olivine and pyroxene) that are both a little denser than the magma, and sink down through it, then a mineral (plagioclase feldspar), that is less dense and floats to the surface.

In that model, plagioclase - rich rock rose to the upper crust as a result of reheating after an ocean of magma had already crystallized.

since the most common mineral on the earth / the most probable mineral you might kick while walking are the plagioclase - feldspars (binary - join: albite to anorthite); silicates, this was hardly any news at all!!!