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Northwest Africa 13300
Basic information Name: Northwest Africa 13300
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13300
Observed fall: No
Year found: 2019
Country: Algeria
Mass:help 20.5 g
Recommended:  L5    [explanation]

This is 1 of 8489 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 2 May 2020
Writeup from MB 109:

Northwest Africa 13300 (NWA 13300)

Ouargla, Algeria

Purchased: 2019

Classification: Ordinary chondrite (L5)

History: The 20.5 g fragment was found by a Bedouin named Bobakar in Ouargla, Algeria, in February of 2018. Dave Lehman and his partner acquired the sample in 2019.

Physical characteristics: Sample is ovoid in shape and has a dark-brown, wind-ablated surface. The interior of the stone is crystalline and shows sparse weakly discernible chondrules and fragments.

Petrography: Classification and Description (A. Love, App): Sample has a recrystallized chondritic texture composed of indistinct chondrules and secondary plagioclase with an avg. crystal length of 39µm (n=18). Chondrules have an avg. apparent diameter 1028µm (n=12). Additional minerals are chromite, apatite, secondary calcite.

Geochemistry: (A. Love, App) Olivine (Fa25.2±1.3, Fe/Mn=46.4±2.4, n=3), low-Ca pyroxene (Fs21.6±0.3Wo1.4±0.1, n=3).

Classification: Ordinary chondrite (L5 C-S2 W3) Based on compositions of ferromagnesian minerals, sample is an L chondrite. Based on grainsize of secondary plagioclase this is an L5.

Specimens: Dave Lehman and his partner hold the main mass. A 4.37 g slice and polished mount are on deposit at App.

Data from:
  Table 0
  Line 0:
Date:P 2019
Mass (g):20.5
Shock stage:C-S2
Weathering grade:W3
Fayalite (mol%):25.2±1.3
Ferrosilite (mol%):21.6±0.3
Wollastonite (mol%):1.4±0.1
Magnetic suscept.:4.43
Classifier:A. Love, App
Type spec mass (g):4.37
Type spec location:App
Main mass:Dave Lehman
Comments:Submitted by Anthony Love
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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     This is 1 of 42 approved meteorites from Ouargla, Algeria (plus 1 unapproved name)
     This is 1 of 1236 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

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