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NWA509

Name

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Structure Class

Ordinary chondrites

Chemical Class

L5

Country

Year found

2000

Mass

10.8 kg

[Museum Collection]

(1) 402.5g

This is 1 of 8638 approved meteorites (plus 4 unapproved names) classified as L5. Published in Meteoritical Bulletin, no. 85, MAPS 36, A293-A322 (2001)

NWA869

Name

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Structure Class

Ordinary chondrites

Chemical Class

L3-6  

Country

Year found

2000

Mass

2 t

[Museum Collection]

(1) 4.3kg   (2) 3.3kg   (3) 1.6kg   (4) 340g

(5) 225g   (6) 168g   (7) 121g   (8) 107g

(9) 97g   (10) 83g   (11) 25.4g

History: It is quite clear that meteorite collectors in Northwest Africa have discovered a large L chondrite strewn field at an undisclosed location. At least 2 metric tons of material comprising thousands of individuals has been sold under the name NWA 869 in the market places of Morocco and around the world. Individual masses are known to range from 20 kg. It is certain that NWA 869 is paired with other NWA meteorites, although no systematic survey has been done. It is also possible that some stones sold as NWA 869 are not part of the same fall, although dealers are confident that most of the known masses are sufficiently distinctive from other NWA meteorites in terms of surface and internal appearance that the error rate should be fairly low. Scientists are advised to confirm the classification of any specimens they obtain before publishing results under this name. Petrography and Geochemistry: (A. Rubin, UCLA) A fragmental breccia of type 4–6 material; one thin section dominated by an L5 lithology gave olivine (Fa24.2). Classification: Ordinary chondrite (L4–6); W 1, S3. Specimens: A 189.3 g type specimen is on deposit at UCLA.

NWA4036

Name

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Structure Class

Ordinary chondrites

Chemical Class

L6-melt rock

Country

Year found

2005

Mass

22 kg

[Museum Collection]

(1) 1193g

This is 1 of 2 approved meteorites classified as L6-melt rock. Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)

NWA7161

Name

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Structure Class

Ordinary chondrites

Chemical Class

L3

Country

Year found

2011

Mass

300 g

[Museum Collection]

(1) 6.25g

History: Purchased by Marcin Cimała in 2011 from a dealer in Erfoud, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Well-formed chondrules (1.4±0.9 mm) in a finer matrix. Geochemistry: Olivine (Fa0.9-48.7, Cr2O3 in ferroan olivine 0.09-0.57 wt.%, mean 0.19±0.19 wt.%, N = 8), orthopyroxene (Fs1.1-21.2Wo4.8-1.1, N = 3), augite (Fs9.0Wo45.1). Classification: Ordinary chondrite (L3). Specimens: 20.3 g including one polished thin section at PSF; main mass with Mr. M. Cimała.

NWA7170

Name

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Structure Class

Ordinary chondrites

Chemical Class

L3

Country

Year found

2011

Mass

250 g

[Museum Collection]

(1) 9.48g   (2) 5.39g

History: Purchased by Marcin Cimała in 2011 from a dealer in Erfoud, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Well-formed chondrules (1.8±0.9 mm) in a finer matrix. Geochemistry: Olivine (Fa0.4-39.2, Cr2O3 in ferroan olivine 0.06-0.11 wt.%, mean 0.09±0.02 wt.%, N = 8), orthopyroxene (Fs3.3-22.2Wo0.2-2.9, N = 3), subcalcic augite (Fs15.3Wo27.2), augite (Fs13.2Wo40.8). Classification: Ordinary chondrite (L3). Specimens: 20.3 g including one polished thin section at PSF; main mass with Mr. M. Cimała.

NWA7171

Name

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Structure Class

Ordinary chondrites

Chemical Class

L3

Country

Year found

2011

Mass

457 g

[Museum Collection]

(1) 14.37g   (2) 5.00g

This is 1 of 817 approved meteorites (plus 1 unapproved name) classified as L3. Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019)

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