Sentences with word «anorthosite»

He said that Ian Lang, the Secretary of State for Scotland, has asked to see Redland Aggregates» application for the extraction, processing and transport by sea of anorthosite from land near Rodel on the Isle of Harris.

The study's authors speculate that exceptionally pure anorthosite may make up a global layer of the moon's crust from roughly three kilometers to 30 kilometers below the surface.

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

The Kaguya results show that anorthosite formation «is really a global process,» says John Longhi, a petrologist at the Lamont - Doherty Earth Observatory of Columbia University and currently a visiting scholar at Duke University, who did not contribute to the study.

Warren, who did not participate in the Kaguya study, says that the new anorthosite research «implies that you had an awfully efficient process for purifying that mineral.»

Most lunar terrains have spectral signatures that are consistent with known lunar anorthosite and basalt compositions.

According to this theory for lunar formation, a rock type called ferroan anorthosite, or FAN, is the oldest of the Moon's crustal rocks, but scientists have had difficulty dating FAN samples.

The extraction, processing and transport by sea of anorthosite — which is an extremely hard - wearing, weather - resistant igneous rock — does indeed justify a public inquiry.

When the «corundum» turned out to be anorthosite, they tried using that to make sandpaper, but that didn't work either.

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.

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.

However, the data have also revealed the presence of highly evolved, silica - rich lunar soils in kilometer - scale and larger exposures, expanded the compositional range of the anorthosites that dominate the lunar crust, and shown that pristine lunar mantle is not exposed at the lunar surface at the kilometer scale.