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 are 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 (at.): 52.9; n=11. Low-Ca pyroxene Fs31.4±9.5 Wo7.2±2.8 (Fs25.4-47.6Wo4.7-12.6); Fe/Mn (at.): 29.9; n=12. Ca-rich pyroxene Fs23.0±1.4Wo30.5±3.7 (Fs21.5-25.9Wo26.0-37.2); Fe/Mn (at.): 32.4; n=14. Plagioclase (maskelynite) An46.3±2.3Or2.4±0.5 (An43.0-49.8Or1.7-3.1); 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 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 are 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 (at.): 52.9; n=11. Low-Ca pyroxene Fs31.4±9.5 Wo7.2±2.8 (Fs25.4-47.6Wo4.7-12.6); Fe/Mn (at.): 29.9; n=12. Ca-rich pyroxene Fs23.0±1.4Wo30.5±3.7 (Fs21.5-25.9Wo26.0-37.2); Fe/Mn (at.): 32.4; n=14. Plagioclase (maskelynite) An46.3±2.3Or2.4±0.5 (An43.0-49.8Or1.7-3.1); 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 certificate of authenticity.
Thanks for your interest.

Αριθμός αντικειμένων
1
Κύριο ορυκτό/όνομα μετεωρίτη
Αρειανός μετεωρίτης (Shergottite, Olivine-Bearing).
Τύπος ορυκτού/τύπος μετεωρίτη
ΝΕΑ 053.
Βάρος
0.3 g
Προέλευση (Περιοχή / Πόλη)
ΝΕΑ
Χώρα
Λιβύη

388 αξιολογήσεις (207 τους τελευταίους 12 μήνες)
  1. 205
  2. 2
  3. 0

Another great piece arrived, quick posting, very good deal, happy with it! Have done several purchases and never any complaints! Recommended seller!

Προβολή μετάφρασης
user-070a28d

Je suis très satisfait du produit et à la vitesse qu'il m'a été livré. L'emballage était impeccable et le certificat d'authenticité était bien présent.

Προβολή μετάφρασης
user-7a98c1fceda9

Nice moon meteorite to add to the collection, at a really good price! Have bought several meteorites before from this person, never dissapointed...! ;)

Προβολή μετάφρασης
user-070a28d

4th time I bought from this person, a total of 6 meteorites. Has been a good experience, nice specimens at a good price. Maybe people hesitate as for the name (user...) but they shouldn't! Good stuff!

Προβολή μετάφρασης
user-070a28d
Δείτε όλες τις σχολίων

388 αξιολογήσεις (207 τους τελευταίους 12 μήνες)
  1. 205
  2. 2
  3. 0