Description: Hello up for sale is one of the rarest meteorite on the market and newly classified as NWA 14741. This gorgeous and unique slice weighs 2.247 grams, it has a perfect polish to one side consisting of several mare basalt clasts (exhibiting intergranular and microgabbroic textures) set within a fine grained matrix. The matrix is highly microvesicular (with pervasive calcite infillings) and has a quenched melt rock texture surrounding numerous small mineral clasts. The larger lithic clasts are composed of olivine, zoned clinopyroxene and calcic plagioclase (apparently crystalline) together with accessory ilmenite, baddeleyite, merrillite (rare earth element-bearing), medium-Ti chromite, troilite and rare kamacite. Some secondary barite is present in the matrix. This meteorite is classified as a LUNAR MARE BASALTIC BRECCIA MICROVESCULAR AND ONE OF THE ONLY FROM THE NEARSIDE OF THE MOON!!!!!! This is the only Lunar sample with Medium-Ti mare basalt and microvescular, besides samples from Apollo missions and is extremely significant and important to science!! It comes with a COA card and display case. Thank you for your interest and take care. EXTREMELY LOW TOTAL KNOWN WEIGHT OF ONLY 20 GRAMS!!! LAST SLICE!!EXTREMELY UNIQUE!! Most lunar meteorites are polymict breccias from the lunar highlands. In contrast the Apollo missions were all nearside where mare basalts are most abundant. Your meteorite is also most likely from the lunar nearside." Origin of the Mare Basalts Marebasaltsoriginate by partial melting, at temperatures of about 1200C, deep in thelunar interior(seeFig. 8), probably at depths between 200 and 400 km. The lunar volcanic glasses appear to come from greater depths, but still from a differentiated source. The basalts are derived from the zones and piles of cumulate minerals developed, at various depths, during crystallization of themagmaocean. The isotopic systematics of themare basaltsindicate that the source region had crystallized by 4.4 billion years. Partial melting occurred in these diverse mineral zones some hundreds of millions of years later due to the slow buildup of heat from the presence of theradioactive elementsK, U, and Th. The melting was not extensive. Over 25 distinct types of marebasaltwere erupted over an interval of more than 1 billion years, but the total amount of melt so generated amounted to only about 0.1% of the volume of the Moon. This forms a stark contrast to the state of the Moon at accretion, when it may have been entirely molten. Name: Northwest Africa 14741 This is an OFFICIAL meteorite name. Abbreviation: NWA 14741 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass: 19.1 g This is 1 of 18 approved meteorites classified as Lunar (bas. breccia). Northwest Africa 14741 (NWA 14741) (Northwest Africa) Purchased: 2021 Nov Classification: Lunar meteorite (basaltic breccia) History: Purchased by Matthew Stream in November 2021 from a dealer in Agadir, Morocco. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) The studied small endcut is a breccia consisting of several mare basalt clasts (exhibiting intergranular and microgabbroic textures) set within a fine grained matrix. The matrix is highly microvesicular (with pervasive calcite infillings) and has a quenched melt rock texture surrounding numerous small mineral clasts. The larger lithic clasts are composed of olivine, zoned clinopyroxene and calcic plagioclase (apparently crystalline) together with accessory ilmenite, baddeleyite, merrillite (rare earth element-bearing), medium-Ti chromite, troilite and rare kamacite. Some secondary barite is present in the matrix. Geochemistry: Olivine (Fa29.1-53.6, FeO/MnO = 95-106, N = 6), pigeonite (Fs24.3Wo13.9, FeO/MnO = 57), ferropigeonite (Fs68.9Wo21.2, FeO/MnO = 69), subcalcic augite (Fs16.9-22.8Wo35.8-34.9, FeO/MnO = 48-54, N = 2), plagioclase (An83.2-84.5Or0.5-0.3, N = 3). Classification: Lunar (basaltic breccia, microvesicular). Specimens: 3.82 g in the form of a polished endcut at UWB; remainder with Mr. M. Stream. Data from: MB111 Table 0 Line 0: Place of purchase:Agadir Date:P 2021 Nov Mass (g):19.1 Pieces:1 Class:Lunar (bas. breccia) Shock stage:moderate Weathering grade:low Fayalite (mol%):29.1-53.6 Ferrosilite (mol%):24.3; 68.9; 16.9-22.8 Wollastonite (mol%):13.9; 21.2; 35.8-34.9 Classifier:A. Irving, UWS, and P. Carpenter, WUSL Type spec mass (g):3.80 Type spec location:UWB Main mass:M. Stream Comments:Work name MS21-8; submitted by A. Irving
Price: 3999.99 USD
Location: Riverside, California
End Time: 2024-10-05T00:08:28.000Z
Shipping Cost: 15.99 USD
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All returns accepted: ReturnsNotAccepted
Featured Refinements: Lunar Meteorite
