Martian meteorite (Shergottite, Olivine-Bearing). NEA 053 - 0.44 g - (1)
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Current bid
€ 59
No reserve price
Expert
Selected by Francesco Moser
Over 20 years collecting meteorites; former museum curator and experienced restorer.
Estimate € 110 - € 160
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 Bidder 3626 | €59 | |
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Martian meteorite NEA 053, a Shergottite with olivine-bearing texture, from Libya (NEA region).
AI-assisted summary
Description from the seller
Northeast Africa 053 (NEA 053)
Purchased: 2023
Classification: Martian meteorite (Shergottite)
History: Reportedly, this stone was found in Libya.
Petrography: (K. Metzler, IfP) Igneous rock, dominated by elongated pyroxene grains (low-Ca and Ca-rich pyroxene) up to 3 mm and isometric olivine grains up to 2.5 mm, with an interstitial mixture of lathy skeletal plagioclase and pyroxene grains. Olivine and pyroxene crystals show igneous chemical zoning. Point counting on thin section images revealed 33 vol% olivine, 40 vol% pyroxene, and 27 vol% plagioclase. The latter has been completely transformed to maskelynite. Accessories include an SiO2 polymorph, ilmenite, and titanomagnetite.
Geochemistry: Mineral compositions and geochemistry: Mean mineral compositions: Olivine Fa46.0±12.9 (Fa28.5-62.9); Fe/Mn (atomic): 52.9; n=11. Low-Ca pyroxene Fs31.4±9.5 Wo7.2±2.8 (Fs25.4-47.6 Wo4.7-12.6); Fe/Mn (atomic): 29.9; n=12. Ca-rich pyroxene Fs23.0±1.4 Wo30.5±3.7 (Fs21.5-25.9 Wo26.0-37.2); Fe/Mn (atomic): 32.4; n=14. Plagioclase (maskelynite) An46.3±2.3 Or2.4±0.5 (An43.0-49.8 Or1.7-3.1); n=12. Fusion crust composition (wt%): Na2O: 1.3; MgO: 14.5; Al2O3: 6.2; SiO2: 48.1; P2O5: 0.8; K2O: 0.1; CaO: 7.4; TiO2: 0.8; Cr2O3: 0.4; MnO: 0.5; FeO: 19.7.
Classification: Martian (Shergottite, olivine-bearing), based on texture and mineral chemistry.
Shock stage: M-S4
Weathering grade: low
Classifier: K. Metzler, IfP
This lot comes with a certificate of authenticity.
Thanks for your interest.
Northeast Africa 053 (NEA 053)
Purchased: 2023
Classification: Martian meteorite (Shergottite)
History: Reportedly, this stone was found in Libya.
Petrography: (K. Metzler, IfP) Igneous rock, dominated by elongated pyroxene grains (low-Ca and Ca-rich pyroxene) up to 3 mm and isometric olivine grains up to 2.5 mm, with an interstitial mixture of lathy skeletal plagioclase and pyroxene grains. Olivine and pyroxene crystals show igneous chemical zoning. Point counting on thin section images revealed 33 vol% olivine, 40 vol% pyroxene, and 27 vol% plagioclase. The latter has been completely transformed to maskelynite. Accessories include an SiO2 polymorph, ilmenite, and titanomagnetite.
Geochemistry: Mineral compositions and geochemistry: Mean mineral compositions: Olivine Fa46.0±12.9 (Fa28.5-62.9); Fe/Mn (atomic): 52.9; n=11. Low-Ca pyroxene Fs31.4±9.5 Wo7.2±2.8 (Fs25.4-47.6 Wo4.7-12.6); Fe/Mn (atomic): 29.9; n=12. Ca-rich pyroxene Fs23.0±1.4 Wo30.5±3.7 (Fs21.5-25.9 Wo26.0-37.2); Fe/Mn (atomic): 32.4; n=14. Plagioclase (maskelynite) An46.3±2.3 Or2.4±0.5 (An43.0-49.8 Or1.7-3.1); n=12. Fusion crust composition (wt%): Na2O: 1.3; MgO: 14.5; Al2O3: 6.2; SiO2: 48.1; P2O5: 0.8; K2O: 0.1; CaO: 7.4; TiO2: 0.8; Cr2O3: 0.4; MnO: 0.5; FeO: 19.7.
Classification: Martian (Shergottite, olivine-bearing), based on texture and mineral chemistry.
Shock stage: M-S4
Weathering grade: low
Classifier: K. Metzler, IfP
This lot comes with a certificate of authenticity.
Thanks for your interest.
Details
Number of items
1
Name of meteorite
Martian meteorite (Shergottite, Olivine-Bearing).
Type of meteorite
NEA 053
Supplement
Do not reserve price.
Weight
0.44 g
Origin (Region/ City)
NEA
Country of Origin
Libya
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