Moon rocks on Earth come from three sources: those collected by the United States Apollo program crewed lunar landings from 1969 to 1972; samples returned by three Soviet Luna programme uncrewed probes in the 1970s; and rocks that were ejected naturally from the lunar surface before falling to Earth as lunar meteorites.
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The Apollo missions collected 2,200 samples weighing 382 kilograms (842 lb).[1] Three Luna spacecraft returned with 301 grams (10.6 oz) of samples.[2][3][4] More than 370 lunar meteorites have been collected on Earth,[5] representing more than 30 different meteorite finds (no falls), with a total mass of over 190 kilograms (420 lb).[6] Some were discovered by scientific teams (such as ANSMET) searching for meteorites in Antarctica, with most of the remainder discovered by collectors in the desert regions of northern Africa and Oman. A moon rock known as “NWA 12691” which weighs 13.5 kilograms (30 lb), was found in the Sahara Desert at the Algerian and Mauritanian borders in January 2017,[7] and later went on sale for $2.5 Million in 2020.[8]
Moon rocks fall into two main categories: those found in the lunar highlands (terrae), and those in the maria. The terrae consist dominantly of mafic plutonic rocks. Regolith breccias with similar protoliths are also common. Mare basalts come in three distinct series in direct relation to their titanium content: high-Ti basalts, low-Ti basalts, and Very Low-Ti (VLT) basalts.
Kurupt’s Moonrocks
Kurupt’s Moonrocks
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Almost all lunar rocks are depleted in volatiles and are completely lacking in hydrated minerals common in Earth rocks. In some regards, lunar rocks are closely related to Earth’s rocks in their isotopic composition of the element oxygen. The Apollo Moon rocks were collected using a variety of tools, including hammers, rakes, scoops, tongs, and core tubes. Most were photographed prior to collection to record the condition in which they were found. They were placed inside sample bags and then a Special Environmental Sample Container for return to the Earth to protect them from contamination. In contrast to the Earth, large portions of the lunar crust appear to be composed of rocks with high concentrations of the mineral anorthite. The mare basalts have relatively high iron values. Furthermore, some of the mare basalts have very high levels of titanium (in the form of ilmenite).[17]