NWA 13309 LL3.15 Chondrite Meteorite - 62.5 g - (1)
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NWA 13309 LL3.15 chondrite meteorite from Timbuktu Mali, weighing 62.5 g, offers a highly characterized specimen with authentic certificate for collectors seeking scientifically informed display material.
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Description from the seller
NWA 13309
LL3.15 Chondrite meteorite
Found in September 2019 in Timbuktu Mali.
62.5 Grams.
GUARANTEED AUTHENTICITY.
You are buying 100% a guaranteed authentic meteorite combined with a signed authenticity certificate.
Free worldwide shipping.
First express class delivery and tracking will be provided.
Official classification data source:
Abbreviation: NWA 13309
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 5.6 kg
Classification
This is 1 of 10 approved meteorites classified as LL3.15.
Comments: Approved 13 Jun 2020
Writeuphelp
Writeup from MB 109:
Northwest Africa 13309 (NWA 13309)
(Northwest Africa)
Purchased: 2019 Sep
Classification: Ordinary chondrite (LL3.15).
Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed, fairly closely packed, relatively unequilibrated, glass-bearing chondrules (apparent diameter 900 ± 560 µm, N = 23) plus some isolated mineral clasts are set in a sparse opaque matrix rich in kamacite, taenite and troilite.
Geochemistry: Olivine (Fa16.2±8.3, range Fa0.6-26.9, N = 9; Cr2O3 in ferroan olivines 0.07-0.55 wt.%, mean 0.25±0.16 wt.%, N = 33), low-Ca pyroxene (Fs14.4±5.0Wo1.5±1.8, range Fs7.4-21.5Wo0.3-4.7, N = 5), subcalcic augite (Fs19.2Wo31.1), diopside (Fs1.2Wo44.5). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.51.
Classification: Ordinary chondrite (LL3.15). Chondrule sizes and magnetic susceptibility support an LL rather than L class. Subtype based on Cr2O3 contents of ferroan olivines per Figure 15 of Grossman and Brearley (2005).
Bibliography:
Grossman J.N. and Brearley A.J. (2005) The onset of metamorphism in ordinary and carbonaceous chondrites. Meteorit. Planet. Sci. 40, 87-122. (link)
Data from:
MB109
Table 0
Line 0:
Place of purchase: Timbuktu, Mali
Date: P 2019 Sep
Mass (g): 5602
Pieces: 6
Class: LL3.15
Shock stage: S2
Weathering grade: W1/2
Fayalite (mol%): 16.2±8.3
Ferrosilite (mol%): 14.4±5.0
Wollastonite (mol%): 1.5±1.8
Classifier: A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g): 38.2
Type spec location: UWB
NWA 13309
LL3.15 Chondrite meteorite
Found in September 2019 in Timbuktu Mali.
62.5 Grams.
GUARANTEED AUTHENTICITY.
You are buying 100% a guaranteed authentic meteorite combined with a signed authenticity certificate.
Free worldwide shipping.
First express class delivery and tracking will be provided.
Official classification data source:
Abbreviation: NWA 13309
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 5.6 kg
Classification
This is 1 of 10 approved meteorites classified as LL3.15.
Comments: Approved 13 Jun 2020
Writeuphelp
Writeup from MB 109:
Northwest Africa 13309 (NWA 13309)
(Northwest Africa)
Purchased: 2019 Sep
Classification: Ordinary chondrite (LL3.15).
Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed, fairly closely packed, relatively unequilibrated, glass-bearing chondrules (apparent diameter 900 ± 560 µm, N = 23) plus some isolated mineral clasts are set in a sparse opaque matrix rich in kamacite, taenite and troilite.
Geochemistry: Olivine (Fa16.2±8.3, range Fa0.6-26.9, N = 9; Cr2O3 in ferroan olivines 0.07-0.55 wt.%, mean 0.25±0.16 wt.%, N = 33), low-Ca pyroxene (Fs14.4±5.0Wo1.5±1.8, range Fs7.4-21.5Wo0.3-4.7, N = 5), subcalcic augite (Fs19.2Wo31.1), diopside (Fs1.2Wo44.5). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.51.
Classification: Ordinary chondrite (LL3.15). Chondrule sizes and magnetic susceptibility support an LL rather than L class. Subtype based on Cr2O3 contents of ferroan olivines per Figure 15 of Grossman and Brearley (2005).
Bibliography:
Grossman J.N. and Brearley A.J. (2005) The onset of metamorphism in ordinary and carbonaceous chondrites. Meteorit. Planet. Sci. 40, 87-122. (link)
Data from:
MB109
Table 0
Line 0:
Place of purchase: Timbuktu, Mali
Date: P 2019 Sep
Mass (g): 5602
Pieces: 6
Class: LL3.15
Shock stage: S2
Weathering grade: W1/2
Fayalite (mol%): 16.2±8.3
Ferrosilite (mol%): 14.4±5.0
Wollastonite (mol%): 1.5±1.8
Classifier: A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g): 38.2
Type spec location: UWB
Details
Number of items
1
Type of meteorite
NWA 13309 LL3.15 Chondrite Meteorite
Supplement
Extremely rare meteorite.
Weight
62.5 g
Origin (Region/ City)
Timbuktu
Country of Origin
Mali
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