Meteorite**NWA 14139, C3 Ungrouped**7.509 gram, Extremely Rare Carbonaceous!!!

Description

Hello up for sale is NWA 14139 classified as a C3 Ungrouped Carbonaceous chondrite. This extremely rare individual fragment weighs 7.509 gram, with fresh fusion crust, imaging reveal the presence of very small, glass-bearing chondrules (apparent diameter 270±130 µm, N = 20), mineral fragments and AOA set in an ultra fine-grained matrix (~50 vol.%, opaque in thin section) containing iron sulfide, pentlandite, low-Ti chromite and minor secondary calcite. No CAI were observed. The powder X-ray diffraction profile is dominated by intense reflections for olivine (dominated by magnesian compositions), clinoenstatite, pyrrhotite, pentlandite and calcite. These reflections sit on a medium intensity, broad scattering peak centered around 33° 2theta (Cu K alpha), indicative of amorphous material. Although distinct reflections for phyllosilicates are absent, there is a broad low-angle scattering centered around 13 Å. Carbonaceous chondrite (C3 ungrouped). This material resembles Telakoast 001 in many respects, including textures, mineralogy, mineral compositions and oxygen isotopes (plotting in the same region below the CCAM trend). The meteorite comes with 2 COA cards, Streaming meteorites and Mark Lyon and display case. Thanks for your interest and take care!
Name: Northwest Africa 14139
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14139
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 192 g
Northwest Africa 14139 (NWA 14139)
(Northwest Africa)
Purchased: 2021 Apr
Classification: Carbonaceous chondrite (C3, ungrouped)
History: Purchased by Ziyao Wang in April 2021 from a dealer in Ouargla, Algeria.
Physical characteristics: A batch of many fine grained, friable black stones (total weight 192 g).
Petrography: (A. Irving, UWS and P. Carpenter, WUSL; L. Garvie, ASU) Optical microscopy coupled with electron microprobe analyses and imaging reveal the presence of very small, glass-bearing chondrules (apparent diameter 270±130 µm, N = 20), mineral fragments and AOA set in an ultra fine-grained matrix (~50 vol.%, opaque in thin section) containing iron sulfide, pentlandite, low-Ti chromite and minor secondary calcite. No CAI were observed. The powder X-ray diffraction profile is dominated by intense reflections for olivine (dominated by magnesian compositions), clinoenstatite, pyrrhotite, pentlandite and calcite. These reflections sit on a medium intensity, broad scattering peak centered around 33° 2theta (Cu K alpha), indicative of amorphous material. Although distinct reflections for phyllosilicates are absent, there is a broad low-angle scattering centered around 13 Å.
Geochemistry: Olivine (Fa29.7±23.9, range Fa0.8-65.4, N = 6), low-Ca pyroxene (Fs2.2±2.5Wo2.5±1.9, range Fs0.7-6.6Wo1.0-4.7, N = 5), augite (Fs13.7±17.7Wo39.4±2.3, range Fs1.2-26.2Wo41.0-37.7, N = 2). Oxygen isotopes (K. Ziegler, UNM): analyses of acid-washed subsamples by laser fluorination gave, respectively, δ17O -4.933, -5.739, -1.985; δ18O 1.002, 0.221, 4.810; Δ17O -5.462, -5.856, -4.525 per mil (all data linearized).
Classification: Carbonaceous chondrite (C3 ungrouped). This material resembles Telakoast 001 in many respects, including textures, mineralogy, mineral compositions and oxygen isotopes (plotting in the same region below the CCAM trend).
Specimens: 24 g including one polished thin section at UWB; remainder with WangZ.
Data from:
MB110
Table 0
Line 0:
Place of purchase:Ouargla, Algeria
Date:P 2021 Apr
Mass (g):192
Pieces:many
Class:C3-ung
Shock stage:S1
Weathering grade:low
Fayalite (mol%):29.7±23.9
Ferrosilite (mol%):2.2±2.5
Wollastonite (mol%):2.5±1.9
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):24
Type spec location:UWB
Main mass:WangZ
Comments:Work name WZY-42; submitted by A. Irving