Hello up for sale is NWA 14900 clasified as a RARE LUNAR FRAGMENTAL BRECCIA. This gorgeous endcut weighs 34.038 grams with a mirrior polish to one side, more than 6 lithologies including Lunar Mare Basalt and Dunite clasts!!!! The Lithic clast lithologies include: anorthositic clasts, noritic clasts, troctolitic clasts, impact melt-rich clasts, basaltic clasts, and a ~2 mm dunite clast!!! Daniel Sheikh clasified this and is writing his abstract for the meteoritical society conference because of its diversity of clasts including possibly the most primitive Dunitic clasts found in Lunar ever!!! This meteorite is not only rare but absolutely gorgeous and with a low total known weight of only 277 grams available. Physical characteristics: Eight stones with slightly weathered fusion crust. I will include a COA card and display case with this lot. Thanks for your interest and take care.

This is 1 of 19 approved LUNAR FRAGMENTAL BRECCIA'S!!!

Name: Northwest Africa 14900

     This is an OFFICIAL meteorite name.

Abbreviation: NWA 14900

Observed fall: No

Year found: 2022

Country: (Northwest Africa)

Mass: 277 g

Classification

  history:

Recommended:  Lunar (frag. breccia)    [explanation]

This is 1 of 19 approved meteorites

Northwest Africa 14900 (NWA 14900)

(Northwest Africa)

Purchased: 13 March 2022

Classification: Lunar meteorite (frag. breccia)

History: Purchased on March 13, 2022, by Matthew Stream from Aliyen Faida’llah in Morocco.

Physical characteristics: Eight stones with slightly weathered fusion crust.

Petrography: (D. Sheikh, Cascadia) Sample represents a lunar polymict breccia composed of angular to sub-rounded mm-sized lithic and mineral clasts set within a glassy to fine-grained matrix containing regions of isolated melt pockets, shock melt veins, schlieren, and vesicles. Lithic clast lithologies include: anorthositic clasts, noritic clasts, troctolitic clasts, impact melt-rich clasts, basaltic clasts, and a ~2 mm dunite clast; mineral clasts include isolated grains of olivine (some displaying strong normal zoning), pyroxene (some displaying exsolution lamellae), and plagioclase (mix of fractured and smooth grains). Accessory phases include ilmenite, silica glass, Cr-rich spinel, troilite, and Fe-Ni metal.

Geochemistry: Olivine (Fa23.4±12.8, range Fa9.0-44.6, Fe/Mn=85±8, n=21), Low-Ca Pyroxene (Fs32.6±13.2Wo4.0±0.9, range Fs17.9-46.7Wo2.8-5.1, Fe/Mn=51±6, n=5), Pigeonite (Fs30.1±6.7Wo11.1±3.3, range Fs19.5-40.8Wo6.9-20.2, Fe/Mn=50±6, n=19), High-Ca Pyroxene (Fs19.3±4.9Wo38.0±3.7, range Fs8.6-25.0Wo33.3-43.2, Fe/Mn=45±4, n=9), Calcic Plagioclase (An95.5±1.6, range An90.2-97.1, n=22); Dunite clast [Olivine (Fa9.1±0.1, range Fa9.0-9.1, Mg#=91, Fe/Mn=80±10, n=8), Cr-rich spinel (Cr#=80.6±2.2, Mg#=53.8±4.5, n=3)].

Classification: Lunar (fragmental breccia) due to polymict nature of the sample.

Specimens: 20.2 g at Cascadia, main mass with Matthew Stream.

Data from:

  MB111

  Table 0

  Line 0:

Place of purchase:Morocco

Date:P 13 March 2022

Mass (g):277

Pieces:8

Class:Lunar (frag. breccia)

Shock stage:high

Weathering grade:low

Fayalite (mol%):23.4±12.8

Ferrosilite (mol%):32.6±13.2, 30.1±6.7, 19.3±4.9

Wollastonite (mol%):4.0±0.9, 11.1±3.3, 38.0±3.7

Classifier:D. Sheikh, Cascadia

Type spec mass (g):20.2

Type spec location:Cascadia

Main mass:Matthew Stream

Comments:CML 1500; submitted by Daniel Sheikh