09183 - NWA 12893 L6-S3-W2 Melt Breccia Chondrite 37.47 g Exclusive More than Half Part of The Main Mass
09183 - NWA 12893 L6-S3-W2 Melt Breccia Chondrite 37.47 g Exclusive More than Half Part of The Main Mass 09183 - NWA 12893 L6-S3-W2 Melt Breccia Chondrite 37.47 g Exclusive More than Half Part of The Main Mass 09183 - NWA 12893 L6-S3-W2 Melt Breccia Chondrite 37.47 g Exclusive More than Half Part of The Main Mass 09183 - NWA 12893 L6-S3-W2 Melt Breccia Chondrite 37.47 g Exclusive More than Half Part of The Main Mass 09183 - NWA 12893 L6-S3-W2 Melt Breccia Chondrite 37.47 g Exclusive More than Half Part of The Main Mass 09183 - NWA 12893 L6-S3-W2 Melt Breccia Chondrite 37.47 g Exclusive More than Half Part of The Main Mass

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09183 - NWA 12893 L6-S3-W2 Melt Breccia Chondrite 37.47 g Exclusive More than Half Part of The Main Mass

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Species
NWA 12893 L6-S3-W2 Melt Breccia Chondrite
Age
-
Location
Mauritania, Northwest Africa
Formation
L6-S3-W2 Melt Breccia Chondrite
Size
52.4 mm   •    in
Weight
37.47 g   •    oz
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Description

Beautiful example of 37.47g of this type of Melt Breccia Chondrite L6, named as NWA 12893

SPECIMEN PROVIDED BY THE ORIGINAL CLASSIFIER D. Sheikh, FSU

Only 56.1g Main mass. Exclusive specimen : More than Half Part of The Main Mass.

The authenticity of this specimen is guaranteed by the geologist Juan Avilés Poblador, member of International Meteorite Collectors Association (IMCA 5681). 

Northwest Africa 12893
Basic information Name: Northwest Africa 12893
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12893
Observed fall: No
Year found: 2018
Country: Mauritania
Mass:help 56.1 g
Classification
  history:
Recommended:   L6-melt breccia    [explanation]

This is 1 of 40 approved meteorites classified as L6-melt breccia.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 11 Oct 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12893 (NWA 12893)

Mauritania

Purchased: 2018

Classification: Ordinary chondrite (L6, melt breccia)

History: Purchased online in 2018 by Daniel Sheikh from Matthew Stream, who had purchased it in 2017 from a seller in Mauritania.

Physical characteristics: Single stone with dark-brown fusion crust. Interior slice reveals brecciated texture.

Petrography: (Daniel Sheikh, FSU) Sample is a breccia composed of angular clasts (up to 2.5 cm) set in a shock melted matrix. Major phases present include olivine, low-ca pyroxene, high-ca pyroxene, sodic plagioclase (Av. 60 μm), kamacite, taenite, and troilite. Accessory chromite is present as well. A few of the clasts contain relict chondrule (BO and RP) fragments.

Geochemistry: (Daniel Sheikh, FSU) Olivine (Fa24.8±0.6, n=87), low-Ca Pyroxene (Fs21.1±0.6Wo1.4±0.2, n=48), high-Ca Pyroxene (Fs8.5±0.7Wo43.7±0.7, n=11), Sodic Plagioclase (An11.3±0.6, n=43), Chromite (Cr/(Cr+Al)=85.5±0.2, n=4).

Classification: Ordinary chondrite (L6-melt breccia)

Specimens: 16.83 grams at UCLA; main mass with Daniel Sheikh.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase: Mauritania
Date: P 2018
Mass (g): 56.05
Pieces: 1
Class: L6-melt breccia
Shock stage: S3
Weathering grade: W2
Fayalite (mol%): 24.8±0.6
Ferrosilite (mol%): 21.1±0.6, 8.5±0.7
Wollastonite (mol%): 1.4±0.2, 43.7±0.7
Classifier: D. Sheikh, FSU
Type spec mass (g): 16.83
Type spec location: UCLA
Main mass: Daniel Sheikh
Comments: Submitted by Daniel Sheikh
Institutions
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
CERTIFICATE OF AUTHENTICITY
This is a unique item. A physical certificate of authenticity will be provided. The certificate, elaborated individually by an expert paleontologist, contains an accurate scientific description and the certificate validity can be verified online at all times. In addition, a 100% money back guarantee is provided. Learn more.

 

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