Moon rocks

Moon rocks

(lunar rocks) Samples of the Moon returned by Apollo and Luna spacecraft. Lunar soils, or fines, consist of glasses, aggregates, and meteorite debris in addition to recognizable fragments of larger rock types. Hand specimens include mare basalts (low titanium content from the western maria, high titanium content from the eastern maria, and aluminous basalts from Mare Fecunditatis), non-mare basalt (also known as KREEP because of its high content of potassium (symbol K), rare earth elements, and phosphorus (symbol P)), and anorthositic rocks from the highlands. Rare lunar-rock types include granite, ultramafic green glass, pyroxenite, norite, troctolite, and dunite. Most highland rocks have been impact metamorphosed (to produce cataclastic, recrystallized, and impact melt textures), but cumulates are also observed and these date back to the formation of the first lunar crust.

Lunar rocks are depleted in volatile and siderophile elements. Strong correlations exist between elements that are geochemically similar to one another (e.g. iron and manganese) or that are both excluded by major minerals (e.g. potassium and lanthanum). The major lunar minerals are calcic plagioclase, clino- and ortho-pyroxene, olivine, and ilmenite. Minor phases include spinels, K-feldspar, troilite, metallic iron, quartz, tridymite, cristobalite, apatite, and whitlockite. Uniquely lunar minerals include armalcolite, tranquillityite, and pyroxferroite. No hydrated phases, highly oxidized minerals, diamonds, or mineralization have yet been found.

References in periodicals archive ?
This new vision of Earth's natural satellite comes from an improved analysis of gases trapped in the Moon rocks gathered during the Apollo mission, as well as detailed measurements of lunar features obtained by recent orbiter missions.
com/space-auction-nasa-space-bag-neil-armstrong-used-moon-rocks-be-auctioned-millions-2542297) Space Auction: NASA Space Bag Neil Armstrong Used For Moon Rocks To Be Auctioned For Millions In July By Sotheby's
Easily vaporized elements, called volatiles, are largely missing from moon rocks but might be sequestered in the lunar interior.
JAL has tied-up with luggage manufacturer Zero Halliburton, which is well-known for its aluminum cases, which were used on Apollo 11 in 1969 to carry moon rocks safely back to the Earth.
Woman saved from blazing bedroom, Moon rocks going on display, cockroach in the curry, and much more made the news 45 years ago this week Woman drags invalid from blazing room A young Cardiff mother fought her way into the blazing bedroom of a house today to rescue an elderly, bedridden neighbour.
Lunar rocks closely resemble Earth rocks in many respects, but Moon rocks are more depleted in volatile elements like potassium, sodium, and zinc, which tend to have lower boiling points and vaporize readily.
Washington, May 29 ( ANI ): A new review of hundreds of chemical analyses of Moon rocks indicates that the amount of water in the Moon's interior varies regionally - revealing clues about how water originated and was redistributed in the Moon.
They had to declare Moon rocks, Moon dust and other lunar samples and listed their flight route as starting at Cape Kennedy in Florida with a stopover on the Moon.
The reason for the tight security and restrictions on publicising the visit was that moon rocks are big business, with just a tiny amount valued at hundreds of thousands, if not millions of pounds.
At last the friendly moon allows Ben to weigh himself down with moon rocks and return - but then Ben's sister wants to fly ever higher on the balloon too
Around 270 moon rocks were scooped up by US astronauts between 1969 and 1972 and then given to countries and their representative governments around the world by the Nixon administration as an act of goodwill.
To them, space flight has given us little more than moon rocks.